METHODS AND SYSTEMS FOR ADJUSTABLE SHOES

Abstract

Methods and systems for adjustable footwear are described. The present disclosure describes footwear systems that include a midsole assembly and an axially adjustable shell. The midsole assembly includes an upper midsole component and a lower midsole component. The upper midsole component is configured to engage with one or more connection locations to interlock the upper midsole component and the lower midsole component at a variety of relative locations. Accordingly, a length of the midsole assembly is formed by the interlocking of the upper midsole component to the lower midsole component based on the relative interlock locations. The footwear system further includes an outer shell having a concertinaed pattern, where the midsole assembly is configured to expand or contract the outer shell axially to accommodate a size of the midsole assembly (e.g., where the outer shell is configured to expand or contract around a shape of the midsole assembly).

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to footwear, and more specifically to methods and systems for adjustable footwear (e.g., adjustable shoes including a midsole assembly and an axially adjustable shell).

2. Discussion of the Related Art

Various systems and processes are known in the art for footwear.

Footwear may generally refer to a range of coverings (e.g., or garments) worn on the feet. In some aspects, footwear may be designed to offer protection against environmental conditions, such as rough or sharp surfaces, uneven or slippery surfaces, hot or cold surface temperatures, etc. As such, footwear, often referred to as shoes, may be crafted to safeguard and provide comfort to feet (e.g., human feet or animal feet) across various conditions. In some aspects, the form of shoes may be directly connected to their functional requirements. Additionally or alternatively, shoes may be designed or formed based at least in part on various fashion elements.

Shoes may be formed (e.g., designed, configured, etc.) into sneakers, sandals, boots, high-fashion shoes, etc., depending on the intended application or use case. Shoes may be made of various materials such as leather, wood, canvas, rubber, plastics, petrochemicals, etc. As such, shoes may provide comfort, support, and various functionalities, while also serving aesthetic purposes.

However, due to the dynamic nature of human feet, conventional footwear systems (e.g., shoes with relatively fixed shape and size) may not provide optimal comfort or adaptability. For example, human foot shape and size can vary due to factors such as natural human growth, aging, health conditions, injuries, physiological changes, etc. Therefore, there is a need in the art for shoes that can adjust based on individual requirements (e.g., thereby reducing the number of shoes required over time, enhancing user comfort, lessening the environmental footprint associated with footwear production/consumption, etc.).

SUMMARY

Methods and systems for adjustable footwear are described. More specifically, footwear systems (e.g., adjustable shoes) that include a midsole assembly and an axially adjustable shell are described. Methods of making such footwear systems and methods for using such footwear systems are also described.

An adjustable shoe including a midsole assembly and a shell is described. One or more aspects of the midsole assembly include: a first piece including at least one first piece connection component; and a second piece including a second piece connection component having at least one connection location, wherein the first piece is removably connected to the second piece by disengageably locking each of the at least one first piece connection component to the second piece at one of the at least one connection location. One or more aspects of the shell include a sole, wherein the sole is axially adjustable along a length of the sole, and wherein when the midsole assembly is placed inside the shell, the shell is axially adjustable to fit a length of the midsole assembly.

An adjustable shoe system including a first midsole component, a second midsole component, and an outer shell is described. One or more aspects of the first midsole component comprise a first connecting portion. One or more aspects of the a second midsole component comprise a second connecting portion, wherein the first connecting portion and the second connecting portion are configured to engage to interlock the first midsole component and the second midsole component at a variety of relative locations, and whereby a midsole assembly having a length is formed by the interlocking of the first midsole component to the second midsole component. In some aspects, the outer shell has a concertinaed pattern, wherein the midsole assembly is configured to expand or contract the outer shell axially to accommodate a size of the midsole assembly, and wherein the outer shell is configured to expand or contract around a shape of the midsole assembly.

A method of making an adjustable shoe is described. One or more aspects of the method include: providing a midsole assembly, comprising a first piece including at least one first piece connection component and a second piece including a second piece connection component having at least one connection location, wherein each of the at least one connection location is disengageably lockable with one of the at least one first piece connection component; connecting the first piece to the second piece by one of the at least one first piece connection component locking with that second piece connection component at one of the at least one connection location; providing a shell including a sole, wherein the sole is axially adjustable along a length of the sole; and placing the midsole assembly inside the shell, wherein the shell is axially adjustable to fit a length of the midsole assembly.

A method of making an adjustable shoe system is described. One or more aspects of the method include: providing a first midsole component comprising a first connecting portion; providing a second midsole component comprising a second connecting portion; configuring the first connecting portion and the second connecting portion to engage to interlock the first midsole component and the second midsole component at a variety of defined relative locations, whereby a midsole assembly having a length is formed by the interlocking of the first midsole component to the second midsole component; providing an outer shell having a concertinaed pattern; configuring the midsole assembly to expand or contract the outer shell axially to accommodate a size of the midsole assembly; and configuring the outer shell to expand or contract around a shape of the midsole assembly.

A method of using an adjustable shoe is described. One or more aspects of the method include: providing a midsole assembly, comprising a first piece including at least one first piece connection component and a second piece including a second piece connection component having at least one connection location, wherein each of the at least one connection location is disengageably lockable with one of the at least one first piece connection component; connecting the first piece to the second piece by locking one of the at least one first piece connection component with the second piece connection component at one of the at least one connection location; providing a shell including a sole, wherein the sole is axially adjustable along a length of the sole; placing the midsole assembly inside the shell; and axially adjusting the shell to fit the length of the midsole assembly.

A method of using an adjustable shoe system is described. One or more aspects of the method include: providing a first midsole component comprising a first connecting portion and a second midsole component comprising a second connecting portion; engaging the first connecting portion and the second connecting portion to interlock the first midsole component and the second midsole component, thereby forming a midsole assembly having a length; providing an outer shell having a concertinaed pattern; and expanding or contracting the outer shell axially around a shape of the midsole assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the midsole components constructed in accordance with the invention, illustrating the upper midsole structure with an elastic section FIG. 1A, the lower midsole forefoot structure FIG. 1B, and the lower midsole heel structure FIG. 1C.

FIG. 2 is a perspective view of the midsole constructed in accordance with the invention, showing the midsole locked into the smallest size.

FIG. 3 is a perspective view of the midsole constructed in accordance with the invention, showing the midsole locked into the largest size.

FIG. 4 is a side view of the midsole constructed in accordance with the invention, showing the snap hook dislodged from the cutout location.

FIG. 5 is a perspective view of an example shell 1001 component constructed in accordance with the invention.

FIG. 6 is a perspective bottom view of an example shell 1001 constructed in accordance with the invention, showing the shell in its base state.

FIG. 7 is a perspective section view of the midsole component inserted into the example shell 1001 constructed in accordance with the invention.

FIG. 8 is a perspective section view of the midsole component inserted into the example shell 1001 at the smallest size with the user's foot inside, constructed in accordance with the invention.

FIG. 9 is a perspective section view of the midsole component inserted into the example shell 1001 at the largest size with the user's foot inside, constructed in accordance with the invention.

FIG. 10 is a perspective view of an example shell 1002 constructed in accordance with the invention illustrating a side view of said constructed shell FIG. 10A and a bottom view of said constructed shell FIG. 10B.

FIG. 11 is a perspective view of an example shell 1003 constructed in accordance with the invention illustrating a side view of said constructed shell FIG. 11A and a bottom view of said constructed shell FIG. 11B.

FIG. 12 is a perspective view of an example shell 1004 constructed in accordance with the invention illustrating a side view of said constructed shell FIG. 12A and a bottom view of said constructed shell FIG. 12B.

FIG. 13 is a perspective view of a midsole embodiment constructed in accordance showing extrusions on the lower midsole forefoot base section and lower midsole extruded heel section.

FIG. 14 is a top section view of an example shell 1005 embodiment constructed in accordance, showing cavities in the shell sole.

FIG. 15 is a perspective section view of an example shell 1006 embodiment constructed in accordance, showing sweep locations in the shell component.

FIG. 16 shows perspective views of an example shell 1007 constructed in accordance. Shown in FIG. 16A is an isometric perspective view. Shown in FIG. 16B is a top view. Shown in FIG. 16C is a bottom view. Shown in FIG. 16D is a front view. Shown in FIG. 16E is a back view. Shown in FIG. 16F is a right side view. Shown in FIG. 16G is a left side view.

FIG. 17 shows perspective views of an example shell 1008 constructed in accordance. Shown in FIG. 17A is an isometric perspective view. Shown in FIG. 17B is a top view. Shown in FIG. 17C is a bottom view. Shown in FIG. 17D is a front view. Shown in FIG. 17E is a back view. Shown in FIG. 17F is a right side view. Shown in FIG. 17G is a left side view.

FIG. 18 shows perspective views of an example shell 1009 constructed in accordance. Shown in FIG. 18A is an isometric perspective view. Shown in FIG. 18B is a top view. Shown in FIG. 18C is a bottom view. Shown in FIG. 18D is a front view. Shown in FIG. 18E is a back view. Shown in FIG. 18F is a right side view. Shown in FIG. 18G is a left side view.

FIG. 19 shows perspective views of an example shell 1010 constructed in accordance. Shown in FIG. 19A is an isometric perspective view. Shown in FIG. 19B is a top view. Shown in FIG. 19C is a bottom view. Shown in FIG. 19D is a front view. Shown in FIG. 19E is a back view. Shown in FIG. 19F is a right side view. Shown in FIG. 19G is a left side view.

FIG. 20 shows perspective views of an example shell 1011 constructed in accordance. Shown in FIG. 20A is an isometric perspective view. Shown in FIG. 20B is a top view. Shown in FIG. 20C is a bottom view. Shown in FIG. 20D is a front view. Shown in FIG. 20E is a back view. Shown in FIG. 20F is a right side view. Shown in FIG. 20G is a left side view.

FIG. 21 shows a perspective view of the midsole components constructed in accordance with the invention, illustrating the forefoot structure with expanding section FIG. 21A, and hindfoot structure FIG. 21B.

FIG. 22 shows views of the midsole constructed in accordance with the invention, showing the midsole locked into the smallest size. FIG. 22A and FIG. 22B show perspective views of the midsole locked into the smallest size. FIG. 22C shows a side view of the midsole locked into the smallest size.

FIG. 23 shows a perspective view of the midsole constructed in accordance with the invention, illustrating flexible flaps moved to promote expansion.

FIG. 24 shows a perspective view of the midsole constructed in accordance with the invention, illustrating the midsole in the second smallest size after expansion.

FIG. 25 shows views of the midsole constructed in accordance with the invention, showing the midsole locked into the largest size. FIG. 25A and FIG. 25B show perspective views of the midsole locked into the largest size. FIG. 25C shows a size view of the midsole locked into the largest size.

FIG. 26 shows a perspective view of the midsole constructed in accordance with the invention, illustrating the midsole wherein the forefoot structure includes a flap.

FIG. 27 shows a perspective view of the midsole constructed in accordance, illustrating the midsole and flap location wherein the midsole is locked into the smallest size.

FIG. 28 shows a perspective view of the midsole constructed in accordance, illustrating the midsole and flap location wherein the midsole is locked into the largest size.

FIG. 29 shows perspective views of the midsole components inserted into the example shell 1012 constructed in accordance with the invention. FIG. 29A and FIG. 29B show perspective views of the midsole components inserted into the example shell 1012.

FIG. 30 shows perspective views of the expanding shoe components constructed in accordance with the invention. FIG. 30A and FIG. 30B show perspective views of the forefoot structure with forefoot straps attached. FIG. 30C and FIG. 30D shows perspective views of the hindfoot structure with hindfoot straps attached. FIG. 30E and FIG. 30F show perspective views of example shell 1013.

FIG. 31 shows perspective views of the midsole components inserted into the example shell 1013 constructed in accordance with the invention. FIG. 31A and FIG. 31B show perspective views of the midsole components inserted into the example shell 1013.

FIG. 32 shows perspective views of the upper midsole and lower midsole components, constructed in accordance with the invention. FIG. 32A shows an exploded view wherein the forefoot and hindfoot straps have connecting pieces corresponding to the connection locations on the upper midsole and lower midsole components. FIG. 32B shows a perspective view wherein the connecting pieces on the shoe upper have been connected to connection locations on the midsole.

FIG. 33 shows an example of a method of making an adjustable shoe according to aspects of the present disclosure.

FIG. 34 shows an example of a method of making an adjustable shoe system according to aspects of the present disclosure.

FIG. 35 shows an example of a method of using an adjustable shoe according to aspects of the present disclosure.

FIG. 36 shows an example of a method of using an adjustable shoe system according to aspects of the present disclosure.

DETAILED DESCRIPTION

The following description is not to be taken in a limiting sense, but is made merely for the purpose of describing the general principles of exemplary embodiments. The scope of the invention should be determined with reference to the claims.

Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

Furthermore, the described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. One skilled in the relevant art will recognize, however, that the invention can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Shoes (e.g., and in general any footwear) may be designed to protect, comfort, and/or style feet. The present disclosure describes systems and methods that effectively accommodate the dynamic nature of human feet. For instance, adjustable shoes, methods for making adjustable shoes, and methods for wearing adjustable shoes are described. The adjustable shoes described herein include a midsole assembly and an axially adjustable shell that effectively enable length adjustments. Various embodiments described herein include shoe systems that dynamically adapt to individual size requirements. As such, the systems and methods described herein may allow a user to use the adjustable shoe during foot growth or other foot shape/size change (e.g., which may enhance comfort/shoe performance throughout such foot evolutions). Moreover, the systems and methods described herein may reduce a user's need for multiple pairs of shoes, which may reduce economic/material costs to a user, lessen the environmental impact associated with footwear production and consumption, etc. Various embodiments of the adjustable shoe systems and methods are described in more detail below, with reference to FIGS. 1-36.

FIG. 1 shows a perspective view of the removable midsole components of the adjustable shoe system constructed in accordance with alternative embodiments. FIG. 1A shows the upper midsole component consisting of stationary sections 10 and an elastic section 20FIG. 1B shows the lower midsole forefoot structure consisting of a forefoot component 30 and connection locations 40. FIG. 1C shows the lower midsole heel structure consisting of a plate 50, extruded heel 60, and interlocking piece (e.g., connecting piece 70).

The upper midsole component in FIG. 1A is generally foot shaped and consists of stationary sections 10 and an elastic section 20. The stationary sections 10 and elastic section 20 may be located anywhere on the upper midsole component. For example, referring to FIG. 1, there is a stationary section 10 located on the forefoot, a stationary section 10 located on the hindfoot, and an elastic section 20 in the midfoot between the stationary sections 10. The stationary sections 10 may be flat such as to attach to the lower midsole structures, textured such as to support a foot or insole on top, or a combination of flat and textured surfaces. The elastic section 20 may take the shape of bellows (“U” shaped, half circle, trapezoid, corrugated, polygonal, rectangular, hexagonal, round, etc.). The elastic section may also consist of an elastic material (neoprene, spandex, stretch knit etc.). In some cases, the upper midsole component may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC, silicone, etc. The upper midsole may also be composed or partly composed of an elastic material (neoprene, spandex, stretch knit, etc.). This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

The lower midsole forefoot component in FIG. 1B consists of a forefoot component 30 and connection locations 40. The forefoot component 30 is generally shaped like a forefoot, and is attached (e.g., glued, thermally bonded, stitched, adhesive, heat welded, or any other common method of connection) partly to the upper midsole stationary section 10. The connection locations 40 may be a cutout in a shape (chevron, rectangle, circle, trapezoid, etc.) meant to connect and lock a snap hook in place. Additionally or alternatively, the connection locations 40 may consist of a connection mechanism (e.g., Velcro, magnet, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fastener, pressure snap, zipper, laces, interlocking tab, or any other common connection mechanism). In some cases, the lower forefoot structure of the midsole may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC etc. In some cases, the lower forefoot structure may be manufactured with a more rigid material (PET, PE, etc.), or multi-material, such to increase the rigidity or durability of the component. This component may be manufactured using a variety of techniques (compression mold, injection mold, 3D print, etc.).

The lower midsole hindfoot component in FIG. 1C consists of a plate 50, extruded heel 60, and connecting piece 70. The plate 50 may be shaped like a hindfoot and may rest under the upper midsole component. The plate 50 is attached (glued, thermally bonded, stitched, etc.) partly to the upper midsole stationary section 10. The extruded heel 60 may be hindfoot shaped and extrudes to a length such as to be level with the bottom of the lower midsole forefoot component 30. The connecting piece 70 may take the form of many shapes and materials, to ensure alignment with the connection locations 40. For instance, the connecting piece 70 may be a snap hook with a shape (e.g., chevron, rectangle, circle, trapezoid, etc.) to fit and lock in a cutout connection location 40. The connecting piece 70 may attach to the connection locations 40 via some other mechanism (e.g., Velcro, magnet, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fastener, pressure snap, zipper, laces, interlocking tab, or any other common connection mechanism). In some cases, the lower midsole heel structure may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, etc. In some cases, this structure may be manufactured with a more rigid material (PET, PE, carbon fiber, PP, PBT, etc.), or multi-material, such to increase the rigidity or durability of the component. This component may be manufactured using a variety of techniques (compression mold, injection mold, 3D print, etc.).

The midsole is created by assembling the elements in FIG. 1 (i.e., 1A, 1B, 1C). In operation, the user, or someone knowledgeable in the art, wants to align the connecting piece 70 with a connection location 40 in accordance with the user's foot size. The connecting piece 70 is then pressed onto or through the connection location 40. Once completed, this mechanism interlocks the lower midsole hindfoot component and the lower midsole forefoot component, preventing movement. The upper midsole elastic section 20 then expands or contracts axially to accommodate the midsole component sizing. To change the midsole size, the user, or someone knowledgeable in the art starts by disengaging (push through, pull through, twist, etc.) the connecting piece 70 from the connection location 40. This action may dislodge (i.e. disconnect) the lower midsole hindfoot component and the lower midsole forefoot component, providing for the upper midsole elastic section 20 to expand or contract axially. The user, or someone knowledgeable in the art then repeats the steps described herein to adjust the midsole sizing in accordance with the user's foot size. For example, the user may reconnect the first piece (e.g. the lower midsole hindfoot component) to the second piece (e.g. the lower midsole forefoot component) by locking the one of at least one first piece connection component to a different one of the plurality of connection locations, whereby the length of the midsole assembly is changed.

Additionally or alternatively, the connecting piece 70 may be located on the lower midsole forefoot structure whilst the connection locations 40 may be located on the lower midsole hindfoot section.

Additionally or alternatively, the elements in FIG. 1 (1A, 1B, 1C) may be manufactured with a process such as 3D printing, injection molding, etc.

FIG. 2 shows a perspective view of the midsole constructed in accordance with embodiments, showing the midsole locked into the smallest size. FIG. 2 shows the upper midsole stationary sections 10, upper midsole elastic section 20 lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, and interlocking piece (e.g., connecting piece 70).

The assembled midsole in FIG. 2 consists of an upper midsole 10, 20 that is generally foot shaped, with stationary section 10 attached partly to the lower midsole forefoot component 30 and stationary section 10 attached partly to the plate 50 of the lower midsole hindfoot component 50, 60, 70. Since the midsole has been adjusted to the smallest size, the upper midsole elastic section 20 may be in the maximum condensed state. The interlocking piece (e.g., connecting piece 70) may be engaged with the connecting piece 40 (e.g., closest to the forefoot of the midsole), locking the shoe in the smallest size.

In operation, one may first line up the interlocking piece (e.g., connecting piece 70) with the connection location 40 closest to the forefoot to lock the midsole in the smallest size for the user. The connecting piece 70 is then pressed onto or through the connection location 40. Once completed, the mechanism interlocks the lower midsole heel component 50, 60, 70, and the lower midsole forefoot component 30, 40, preventing movement. The upper midsole elastic section 20 contracts axially to accommodate the midsole component sizing.

FIG. 3 shows a perspective view of the midsole constructed in accordance with embodiments, showing the midsole locked into the largest size. FIG. 3 shows the upper midsole stationary sections 10, upper midsole elastic section 20 lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, and interlocking piece (e.g., connecting piece 70).

The assembled midsole in FIG. 3 consists of an upper midsole 10, 20 that is generally foot shaped, with stationary section 10 attached partly to the lower midsole forefoot component 30 and stationary section 10 attached partly to the plate 50 of the lower midsole hindfoot component 50, 60, 70. In some cases, the upper midsole elastic section 20 may be in the maximum expanded state since the midsole may be adjusted to the maximum size. The interlocking piece (e.g., connecting piece 70) may be engaged with the connecting piece 40 closest to the hindfoot of the midsole, locking the shoe in the maximum size.

In operation, the user may first line up the interlocking piece (e.g., connecting piece 70) with the connection location 40 closest to the hindfoot to lock the midsole in the largest size for the user. The connecting piece 70 may then be pressed onto or through the connection location 40. Once completed, the mechanism interlocks the lower midsole heel structure and the lower midsole forefoot structure, preventing movement. The upper midsole movable section 20 expands to accommodate the midsole component sizing.

FIG. 4 is a side view of the midsole constructed in accordance with alternative embodiments, showing the connecting piece dislodged from the connection locations. FIG. 4 shows the upper midsole stationary sections 10, upper midsole elastic section 20 lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, and interlocking piece (e.g., connecting piece 70).

The assembled midsole in FIG. 4 consists of an upper midsole 10, 20 that is generally foot shaped, with stationary section 10 attached partly to the lower midsole forefoot component 30 and stationary section 10 attached partly to the plate 50 of the lower midsole hindfoot component 50, 60, 70. Since the connecting piece 70 has been dislodged from the connection location 40, the elastic section on the upper midsole 20 may be expanded or contracted axially to adjust.

In operation, the connecting piece 70 may then be aligned with a new connection location 40 in accordance with the user's size when the connecting piece 70 may be dislodged from the connection location 40. The elastic section on the upper midsole 20 may be expanded or contracted axially to adjust to the size change.

Methods and systems for adjustable shoes are described. For instance, an adjustable shoe may include a first piece (e.g., an upper midsole component) including at least one first piece connection component (e.g., connecting piece 70). An adjustable shoe may further include a second piece (e.g., a lower midsole component) including a second piece connection component having at least one connection location (e.g., connection location 40).

In some aspects, the first piece (e.g., an upper midsole component) and the second piece (e.g., a lower midsole component) may be referred to as a midsole assembly. In some aspects, the first piece connection component (e.g., connecting piece 70) and the second connecting portion (e.g., connection location 40) are configured to engage to interlock the upper midsole component and the lower midsole component at a variety of relative locations, such that a length of the midsole assembly is formed by the interlocking of the upper midsole component to the lower midsole component.

In some aspects, an upper midsole component may include, or refer to an upper midsole stationary section 10 (e.g., a forefoot upper midsole stationary section 10 and/or a heel upper midsole stationary section 10), an upper midsole elastic section 20 or a combination thereof. In some aspects, a lower midsole component may include, or refer to a lower midsole forefoot component 30, a connection location 40 portion of a lower midsole component, an extruded heel 60, or some combination thereof.

As described in more detail herein, the upper midsole component may be removably connected to the lower midsole component by disengageably locking each of the at least one first piece connection component to the second piece at one of the at least one connection location. For example, upper midsole stationary section 10 may be removably connected to lower midsole forefoot component 30 by disengageably locking connecting piece 70 to connection location 40.

In some aspects, the upper midsole component includes an elastic section (e.g., an upper midsole elastic section 20). In some aspects, the upper midsole elastic section 20 is located between two upper midsole stationary sections 10. In some aspects, the lower midsole component includes a forefoot component (e.g., lower midsole forefoot component 30) and a heel component (e.g., extruded heel 60).

In some aspects, the at least one first piece connection component is a connecting piece 70, the at least one connection location 40 is a plurality of connection locations 40, and the forefoot component 30 and the heel component 60 are connected by the connecting piece 70 locking with one of the plurality of connection locations 40.

In some aspects, a thickness of the upper midsole component is tapered from a forefoot of the shoe to a hindfoot of the shoe. For example, a thickness of the upper midsole stationary section 10 may be tapered from a forefoot of the shoe to a hindfoot of the shoe.

In some aspects, a thickness of the lower midsole component is tapered from the hindfoot of the shoe to the forefoot of the shoe. For example, a thickness of the lower midsole component may be tapered from the extruded heel 60 of the shoe to the lower midsole forefoot component 30 of the shoe.

In some aspects, the lower midsole component subducts under the upper midsole component. In some aspects, the at least one upper midsole component connection component comprises a plurality of pairs of transverse flexible flaps. In some aspects, each pair of transverse flexible flaps comprises a medial side flap and a lateral side flap, wherein the plurality of pairs of transverse flexible flaps are spaced along a longitudinal axis of the upper midsole component so as to form a plurality of pairs of transverse slots. In some aspects, the lower midsole component connection component comprises two holes at one connection location.

Some embodiments may include a string for disengageably locking the upper midsole component to the lower midsole component via the holes and one pair of transverse slots. Some embodiments may include a flexible line, where the disengageably locking each of the at least one first piece connection component to the second piece at one of the at least one connection location further comprises the flexible line engaged with each of the at least one first piece connection component and the at least one connection location. In some aspects, each of the at least one connection location and the at least one connection location comprises a feature configured to engage the line.

In some aspects, the connecting piece 70 is one or more snap hooks and the connection location 40 is a plurality of connection locations 40, and each connection location 40 is a cutout.

In some aspects, the at least one first piece connection component is a connecting piece 70, wherein the at least one connection location 40 comprises a plurality of connection locations 40, wherein the first piece is removably connected to the second piece by disengageably locking the connecting piece 70 to the second piece at one of the plurality of connection locations 40.

In some aspects, one or more of the first piece connection component and the second piece connection component may include, or refer to snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

FIG. 5 is a perspective view of an example shell 1001 component constructed in accordance with embodiments, illustrating the concertinaed pattern on the upper portion of example shell 1001. FIG. 5 shows the example shell upper section 80 and sole section 90.

The example shell 1001 may be shaped like a sneaker consisting of upper section 80 and sole section 90 (obstructed from view). The example shell 1001 components 80, 90 may be constructed such that a concertinaed pattern may be included on the upper 80 and sole 90 of the example shell 1001. For example, FIG. 5 illustrates said concertinaed patterns on the upper 80 of example shell 1001. In said FIG. 5, there are three vertical cuts on the lateral side of the shoe starting from the sole section 90 continuing until expanding parameters are met. However, embodiments may not be limited thereto and the number of cuts may vary.

In some cases, expanding parameters may refer to an example shell that may be able to expand and contract axially to a target range of sizes indicated with the midsole assembly. As shown in FIG. 5, there are three cuts on the medial side of the shoe starting from the sole section 90 continuing vertically until expanding parameters are met. A shell may include anywhere from 1-10,000 vertical cuts. The cuts may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. Additionally there may be two cuts in the example shell 1001 upper 80 starting from the center of the midfoot, continuing down until expanding parameters are met. However, embodiments are not limited thereto and there may be 1-10,000 midfoot cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. In some cases, the upper section 80 may be manufactured with flexible and durable materials that provide for improved (e.g., optimal) expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The upper section 80 may also be composed, or partly composed of an elastic material such as neoprene, spandex, stretch knit, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

FIG. 6 is a perspective bottom view of an example shell 1001 constructed in accordance with alternative embodiments, illustrating the concertinaed pattern on the example shell 1001 sole. FIG. 6 shows the example shell upper section 80 and sole section 90.

The example shell 1001 upper section 80 (obstructed from view) and sole section 9 may be constructed such that there is a concertinaed pattern on the upper 80 and sole 90 of the example shell 1001. For example, FIG. 6 illustrates said concertinaed patterns on the sole 90 of example shell 1001. In said FIG. 6, there are two octo-lateral cuts in the middle of the example shell 1001 going from the medial to lateral side of the example shell 1001. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. There are also 3 “V” shaped cuts on the lateral as well as 3 “V” shaped cuts on the medial side of the sole on example shell 1001. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. In some cases, the sole section 90 may be manufactured with flexible and durable materials that provide for expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The sole section 90 may also be composed, or partly composed of an elastic material such as neoprene, spandex, etc. This component may be manufactured using variety of techniques such as compression mold, injection mold, 3D print, etc.

In operation, the shell may be made such that the concertinaed pattern provides for the upper 80 and sole 90 of the shell to expand and contract axially in conjunction with one another. To expand the shell, the forefoot and hindfoot sections of the shell may be pulled apart. This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the shell may be pushed towards one another to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 7 illustrates a side section view of the midsole component inserted into the example shell 1001 constructed in accordance with alternative embodiments, with the midsole in the smallest size. FIG. 7 shows the upper midsole stationary sections 10, upper midsole elastic section 20, lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, connecting piece 70, example shell 1001 upper section 80, example shell sole section 90.

In the section view illustrated in FIG. 7, the connecting piece 70 on the lower midsole hindfoot structure may be interlocked with a connection location 40 of the smallest size. The upper midsole elastic section 20 may be adjusted to the size indicated with the connecting features 40, 70. The example shell 100180, 90, may be expanded to fit around the midsole assembly. The lower midsole forefoot component 30 and extruded heel 60 interface with the example shell 1001 sole 90. The example shell 1001 upper 80 may be expanded to provide an interface with the edges of the midsole assembly.

In operation, the connecting piece 70 may be aligned with the connection location 40 of the smallest size. The connecting piece 70 may then be pushed onto or through said connection location 40. The midsole assembly may now be locked into the smallest size. Next, the midsole assembly may be inserted into the shell assembly. In some cases, the shell may be pulled from the forefoot and hindfoot sections to fit around the midsole assembly, providing for the concertinaed pattern on the shell to expand and contract around the shape of the midsole assembly.

Methods and systems for adjustable shoes are described. For instance, an adjustable shoe may include a midsole assembly and an axially adjustable shell. A first midsole component (e.g., an upper midsole component) may include a first connecting portion (e.g., a connecting piece 70), and a second midsole component (e.g., a lower midsole component) may include a second connecting portion (e.g., connection location 40). For example, the first connecting portion and the second connecting portion may be configured to engage to interlock the first midsole component and the second midsole component at a variety of relative locations, where a midsole assembly having a length is formed by the interlocking of the first midsole component to the second midsole component.

In some aspects, an adjustable shoe may further include an outer shell having a concertinaed pattern. In some aspects, the midsole assembly is configured to expand or contract the outer shell axially to accommodate a size of the midsole assembly, and wherein the outer shell is configured to expand or contract around a shape of the midsole assembly.

For instance, an adjustable shoe may include a shell (e.g., shell upper section 80 and shell sole section 90, where the sole 90 is axially adjustable along a length of the sole 90), where when the midsole assembly is placed inside the shell and the shell is axially adjustable to fit a length of the midsole assembly.

In some aspects, the shell includes an upper section 80 that is axially adjustable along a length of the upper section. In some aspects, the upper section 80 includes a concertinaed pattern. In some aspects, the sole includes a concertinaed pattern.

In some aspects, the first connecting portion and the second connecting portion are configured to engage via a snap hook and cutout mechanism. In some aspects, the first midsole component comprises an elastic section configured to expand or contract axially to accommodate the size of the midsole assembly.

In some aspects, the outer shell comprises an upper section and a sole section, both having the concertinaed pattern. In some aspects, the outer shell comprises an upper section and a sole section, wherein the outer shell is configured to expand or contract axially via a plurality of cuts in the upper section and in the sole section. In some aspects, the outer shell comprises an upper section and a sole section, wherein the outer shell is configured to expand or contract axially via an elastic material in the upper section and in the sole section. In some aspects, the outer shell further comprises a plurality of straps configured to adjust a fit of the shoe system to a user's foot.

In some aspects, the first midsole component and the second midsole component are removably insertable into the outer shell. In some aspects, the first midsole component and the second midsole component are attached to the outer shell via glue, stitching, welding, or other common attachment methods.

In some aspects, the first midsole component and the second midsole component are manufactured using compression molding, injection molding, or 3D printing. In some aspects, the outer shell is shaped like a sneaker, sandal, or other common shoe types. In some aspects, a thickness of the first midsole component is tapered from a forefoot of the shoe to a hindfoot of the shoe. In some aspects, a thickness of the second midsole component is tapered from the hindfoot of the shoe to the forefoot of the shoe. In some aspects, the second midsole component subducts under the first midsole component.

In some aspects, the first connecting portion and the second connecting portion are selected from the group consisting of snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

FIG. 8 is a side section view of the midsole component inserted into the example shell 1001 at the smallest size with the user's foot inside, constructed in accordance with alternative embodiments. FIG. 8 shows the upper midsole stationary sections 10, upper midsole elastic section 20, lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, connecting piece 70, example shell 1001 upper section 80, example shell sole section 90, and example foot 100.

In the section view illustrated in FIG. 8, the connecting piece 70 on the lower midsole hindfoot structure may be interlocked with connection location 40 closest to the forefoot. The upper midsole elastic section 20 may be adjusted to the size indicated with the connecting features 40, 70. The example shell 100180, 90, may be expanded to fit around the midsole assembly. The lower midsole forefoot component 30 and extruded heel 60 interface with the example shell 1001 sole 90. The example shell 1001 upper 80 may be expanded to provide an interface with the edges of the midsole assembly.

In operation, the connecting piece 70 may be aligned with the connection location 40 of the smallest size. The connecting piece 70 may be then pushed onto or through connection location 40 closest to the forefoot. The midsole assembly may now be locked into the smallest size. The midsole assembly is then inserted into the shell assembly. To fit around the midsole assembly, the shell may be pulled from the forefoot and hindfoot sections, providing for the concertinaed pattern on the shell to expand and contract around the shape of the midsole assembly. In some cases, the user is then able to put the foot 100 into the shoe and wear the shoe once the midsole assembly may be successfully inserted into the shell assembly.

FIG. 9 is a side section view of the midsole component inserted into the example shell 1001 at the largest size with the user's foot inside, constructed in accordance with alternative embodiments. FIG. 9 shows the upper midsole stationary sections 10, upper midsole elastic section 20, lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, connecting piece 70, example shell 1001 upper section 80, example shell 1001 sole section 90, and example foot 110.

In the section view illustrated in FIG. 9, the connecting piece 70 on the lower midsole hindfoot structure may be interlocked with connection location 40 closest to the hindfoot. The upper midsole elastic section 20 may be adjusted to the size indicated with the connecting features 40, 70. The example shell 100180, 90, may be expanded to fit around the midsole assembly. The lower midsole forefoot component 30 and extruded heel 60 interface with the example shell 1001 sole 90. The example shell 1001 upper 80 may be expanded to provide an interface with the edges of the midsole assembly.

In operation, the connecting piece 70 may be aligned with the connection location 40 of the largest size. The connecting piece 70 may be then pushed onto or through connection location 40 closest to the hindfoot. The midsole assembly may be now locked into the largest size. The midsole assembly is then inserted into the shell assembly. In some cases, the shell may be pulled from the forefoot and hindfoot sections to fit around the midsole assembly, providing for the concertinaed pattern on the shell to expand and contract around the shape of the midsole assembly. Once the midsole assembly has been successfully inserted into the shell assembly, the user may then be able to put the foot 110 into the shoe and wear the shoe.

FIG. 10 shows views of an example shell 1002 constructed in accordance with alternative embodiments, illustrating a side view of said constructed shell FIG. 10A and a bottom view of said constructed shell FIG. 10B. FIG. 10 shows an example shell 1002 heel cup sections 120 non-elastic sections 130 elastic section 140, toe cap section 150, velcro section 160, velcro strap section 170, tongue 180, finger loop 190, sole section 200 and strobel section 210.

The example shell 1002 illustrated in FIG. 10 may be generally shaped like a sneaker and constructed such that the shell upper contains a combination of non-elastic sections 130 elastic sections 140, and affordances. The shell profile elements may be constructed around a shoe last, and attached (glued, stitched, bonded, etc.) to a formed shoe sole. For example, the example shell 1002 is constructed such that non-elastic sections 130 are attached around an elastic material (spandex, neoprene, stretch knit, etc.) 140 with affordances attached around this such as a heel cup 120 toe cap 150, velcro 160, velcro straps 170, tongue 180, and finger loop 190. Said upper components may be then attached to a strobel 210. The completed shoe upper may be then attached (glued, stitched, bonded, etc.) to a sole with a concertinaed pattern 200.

In some cases, said sole 200 illustrates 3 “U” shaped cuts on the lateral side and 2 “U” shaped cuts on the medial side providing for a concertinaed zig-zag pattern that enables the sole 200 to expand and contract axially with the shoe upper components. However, embodiments are not limited thereto and a shell sole may include anywhere from 1-10,000 medial or lateral cuts. The cuts may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as optimal expanding parameters are met. A shell sole may feature another concertinaed pattern providing for the sole to expand and contract axially (chevron, herringbone, waves, ripple, honeycomb, diamond, or other common expanding and contracting pattern). Further affordances may be added to the sole 200 such as extra material for added durability 220.

In operation, the requirements to make a shell are such that the concertinaed pattern and/or elastic components provides for the upper and sole components of the shell to expand and contract axially in conjunction with one another. To expand the shell, the forefoot and hindfoot sections of the shell may be pulled apart. This provides for the concertinaed pattern and/or elastic components to adjust and expand accordingly. To contract the shell, the forefoot and hindfoot sections of the shell may be pushed towards one another. This provides for the concertinaed pattern to adjust and contract accordingly. The midsole assembly is then inserted into the shell assembly, providing for the shell to contract around the size indicated with the midsole assembly.

Additionally or alternatively, stated affordances may or may not be included and affordances not included may be included. For example, laces, magnets, elastic bands, snaps, padding, breathable mesh, reflective accents, non-slip sole, reinforced toe, adjustable straps, waterproofing, etc.

Additionally or alternatively, a lasting method may be used (e.g., sip lasting, strobel lasting, combination lasting, board lasting, or any other common lasting method).

Additionally or alternatively, a construction method may be used (e.g., blake, blake/rapid, goodyear welt, Norwegian storm welt, stitch down veldtschoen welt, bologna, or any other common construction method).

FIG. 11 shows views of an example shell 1003 constructed in accordance with alternative embodiments, illustrating a side view of said constructed shell FIG. 11A and a bottom view of said constructed shell FIG. 11B. FIG. 11 shows example shell 1003 elastic upper section 230 heel counter section 240, and sole sections 250.

The example shell 1003 illustrated in FIG. 11 may be generally shaped like a sneaker and constructed such that the shell upper 230 is elastic (stretch knit, spandex, neoprene, etc.). The elastic upper is then attached (direct injection, glued, stitched, bonded, etc.) to sole sections 250. For example, the example shell 1003 sole 250 consists of 5 sections close in proximity, not connected to each other but connected to the elastic upper 230. However, embodiments are not limited thereto and there may be anywhere from 2-10,000 sole sections that take the form of any shape (e.g., triangle, rectangle, diamond, chevron, hexagon, circle or any other common shape) so long as expanding parameters are met. This spacing provides for the example shell 1003 upper 230 and sole 250 to expand and contract in accordance with one another. Affordances may be included on a shell, such as a heel counter 240 attached to example shell 1003.

In operation, example shell 1003 expands and contracts with the construction of an elastic upper 230 and sole with separated sections 250. To expand the shell, the forefoot and hindfoot sections of the shell may be pulled apart, providing for the elastic upper and separated sole sections to expand and contract. The midsole assembly may be then inserted into the shell assembly, providing for the shell to contract around the size indicated with the midsole assembly.

FIG. 12 shows views of an example shell 1004 constructed in accordance with alternative embodiments, illustrating a side view of said constructed shell FIG. 12A and a bottom view of said constructed shell FIG. 12B. Shown is an example shell 1004 upper section 260 and sole section 270.

The example shell illustrated in FIG. 12 may be generally shaped like a sandal slide and constructed such that the shell upper 260 and sole 270 include concertinaed patterns providing for expansion and contraction. For example, FIG. 12A illustrates the sandal having 3 diamond cutouts in the upper 260, giving the sandal upper a concertinaed pattern. FIG. 12B shows 3 diamond cutouts running the length of the sole 270 starting from near the edge of the medial side continuing to the lateral side. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. Said sole 270 has 4 “V” cuts on the lateral and 4 “V” cuts on the medial side of the sole 270, giving the sole a concertinaed pattern. There may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. In some cases, the upper section 260 and sole section 270 are meant to be manufactured with flexible and durable materials that provide for improved (e.g., optimal) expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, etc. The upper section 260 may also be composed of or partly composed of an elastic material such as neoprene, spandex, stretch knit, etc. This may also be manufactured using a variety of techniques such as injection mold, compression mold, etc. 3D print, etc.

In operation, the requirements to make a shell are such that the concertinaed pattern provides for the upper 260 and sole 270 of the shell to expand and contract axially in conjunction with one another (i.e., together or simultaneously). To expand the shell, the forefoot and hindfoot sections of the upper 260 and the sole 270 of the shell may be pulled apart (or may be allowed to relax back apart). This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the upper 260 and the sole 270 of the shell may be pushed towards one another (or may be allowed to relax back together) to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 13 is a perspective view of a midsole embodiment constructed in accordance showing locating extrusions on the lower midsole forefoot base section and lower midsole extruded heel section. FIG. 13 shows upper midsole stationary sections 10, elastic section 20 lower midsole forefoot component 30 connection locations 40, plate 50, extruded heel 60, connecting piece 70, and locating feature 280.

The assembled midsole in FIG. 13 consists of an upper midsole 10, 20 that may be generally foot shaped, with stationary section 10 attached partly to the lower midsole forefoot component 30 and stationary section 1 attached partly to the plate 50 of the lower midsole hindfoot component 5, 60, 70. The lower midsole forefoot component 30 may be generally forefoot shaped, and contains connection locations 40 may be a cutout in a shape (chevron, rectangle, circle, trapezoid, etc.) meant to connect and lock a snap hook in place. Additionally or alternatively, the connection locations 40 may consist of a connection mechanism (e.g., Velcro, magnet, screws, pins, adhesives, buttons, buckles, etc.). The locating feature 280 has extrusions from the bottom of the lower midsole forefoot component 30 and extruded heel 60. Said locating features 280 may take a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) and said shapes may contain draft angles. There may be anywhere from 1-10,000 locating extrusion embodiments. In some cases, the locating features may take a form (e.g., Velcro, magnet, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fastener, pressure snap, zipper, laces, interlocking tab, or any other common connection mechanism).

FIG. 14 is a top section view of an example shell 1005 embodiment constructed in accordance with present disclosure, showing locating cavities in the shell sole. FIG. 14 shows an example shell 1005 sole 290 and embodiment locating features 300.

The example shell 1005 sole 290 in FIG. 14 may be generally foot shaped and may consist of a concertinaed pattern providing for expansion and contraction of said sole. For example, FIG. 14 illustrates said concertinaed patterns on the sole 290 of example shell 1001. In said FIG. 14, there are two octo-lateral cuts in the middle of the example shell 1005 sole 290 going from the medial to lateral side of the example shell 1005 sole 29. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. As shown in FIG. 14, there are also 3 “V” shaped cuts on the lateral as well as 3 “V” shaped cuts on the medial side of the sole on example shell 1005 sole 290. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. There are also locating features 300 on the forefoot and hindfoot sections of the sole 290. Said locating features 300 may be a cavity and take a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) and said shapes may contain draft angles. However, embodiments are not limited thereto and there may be anywhere from 1-10,000 locating feature embodiments. The locating cavities may also take another form (e.g., Velcro, magnet, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fastener, pressure snap, zipper, laces, interlocking tab, or any other common connection mechanism).

In operation, the locating extrusion 280 and locating cavity 300 embodiments function such that when a midsole assembly is inserted into a shell assembly, the locating extrusions 280 align and interface with the locating cavities 300.

FIG. 15 is a perspective section view of an example shell 1006 embodiment constructed in accordance, showing sweep locations in the shell component. FIG. 15 shows a midsole assembly 10, 20, 30, 40, 50, 60, 70, inside an example shell 1006 upper 310, and sweep locations 330 on example shell 1006 sole 320.

The example shell 1006 may be generally shaped like a sneaker (obstructed from view) and consists of upper section 310 and sole section 320. Said example shell 1006 also features a sweep 330 generally shaped like an extruded rectangle, sweeping around the top perimeter of the sole 320. Said sweep may take another shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) and may sweep around the whole or a part of the top perimeter of the sole 320. The example shell 1006 components 310, 320, 330 are constructed such that there is a concertinaed pattern embedded throughout the upper r 310, sole 320 and subsequently sweep 330 of the example shell 1006. The lower midsole forefoot component 30 and extruded heel 60 interface with the example shell 1006 sole 320. The example shell 1006 upper 310 may have expanded to provide an interface with the edges of the midsole assembly. The upper midsole stationary sections 10 and/or elastic section 20 interface with the sweep embodiment 330.

In operation, the midsole assembly may be then inserted into the shell assembly. To fit around the midsole assembly, the shell may be pulled from the forefoot and hindfoot sections, providing for the concertinaed pattern on the shell to expand and contract around the shape of the midsole assembly. The sweep embodiments 330 may function such as to keep the midsole assembly contained in the shell sole 320.

FIG. 16 shows perspective views of an example shell 1007 constructed in accordance with alternative embodiments. FIG. 16 shows example shell 1007 upper 340, example shell 1007 sole 350, and example shell 1007 snap adjustment locations 360. FIG. 16A is an isometric perspective view. FIG. 16B is a top view. FIG. 16C is a bottom view. FIG. 16D is a front view. FIG. 16E is a back view. FIG. 16F is a right side view. FIG. 16G is a left side view.

The example shell 1007 may generally be shaped like a sneaker consisting of upper section 340, sole section 350, and snap adjustment locations 360. The example shell 1007 components 340, 350, 360, are constructed such that there is a concertinaed pattern on the upper 340 and sole 350 of the example shell 1007. For example, FIG. 16 illustrates said concertinaed patterns on the upper 340 of example shell 1007. In said FIG. 16, there is one octo-lateral cut in the midfoot of the upper 340. There are 2 “V” shaped cuts on the lateral and 2 “V” shaped cuts on the medial sides of the upper 340 midfoot. However, embodiments are not limited thereto and a shell may include anywhere from 1-10,000 cuts. The cuts may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped, triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common cut shape) so long as expanding parameters are met. The upper has three snap adjustment locations 360 on the medial side of the shoe, and three snap adjustment locations 360 on the lateral side of the shoe. The snap adjustment locations 360 are holes in the shape of a circle, and an extrusion located on the upper 340 near the hindfoot. However, embodiments are not limited thereto and there may be anywhere from 1-200 snap adjustment locations 360 which may be any shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common cut shape) that may aid in adjusting the fit of said shell. The snap adjustment locations 360 connect the forefoot and hindfoot upper 340 sections. In some cases, the upper section 340 and snap adjustment locations 360 may be manufactured with flexible and durable materials that provide for improved (e.g., optimal) expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The upper section 340 and snap adjustment locations 360 may also be composed, or partly composed of an elastic material such as neoprene, spandex, stretch knit, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

Additionally FIG. 16 illustrates said concertinaed patterns on the sole 350 of example shell 1007. In said FIG. 16, there are two octo-lateral cuts in the middle of the example shell 1007 going from the medial to lateral side of the example shell 1007. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. There are also 3 “V” shaped cuts on the lateral as well as 3 “V” shaped cuts on the medial side of the sole on example shell 1007. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. Generally, the sole section 350 is to be manufactured with flexible and durable materials that provide for expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The sole section 350 may also be composed, or partly composed of an elastic material such as neoprene, spandex, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

In operation, the shell may be made such that the concertinaed pattern provides for the upper 340 and sole 350 of the shell to expand and contract axially in conjunction with one another. To expand the shell, the forefoot and hindfoot sections of the shell may be pulled apart. This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the shell may be pushed towards one another to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 17 shows perspective views of an example shell 1008 constructed in accordance with alternative embodiments. FIG. 17 shows example shell 1008 upper 370, and example shell 1008 sole 380. FIG. 17A is an isometric perspective view. FIG. 17B is a top view. FIG. 17C is a bottom view. FIG. 17D is a front view. FIG. 17E is a back view. FIG. 17F is a right side view. FIG. 17G is a left side view.

The example shell 1008 may generally be shaped like a sneaker consisting of upper section 370, and sole section 380. The example shell 1008 components 370, 380, are constructed such that there is a concertinaed pattern on the upper 370 and sole 380 of the example shell 1008. For example, FIG. 17 illustrates said concertinaed patterns on the upper 370 of example shell 1008. In said FIG. 17, there are 3 oblong shaped cuts in the midfoot of the upper 370. There are 3 “U” shaped cuts on the lateral and 3 “U” shaped cuts on the medial sides of the upper 370 midfoot. However, embodiments are not limited thereto and a shell may include anywhere from 1-10,000 cuts. The cuts may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped, triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common cut shape) so long as expanding parameters are met. Generally, the upper section 370 is to be manufactured with flexible and durable materials that provide for improved (e.g., optimal) expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc.

The upper section 370 may also be composed, or partly composed of an elastic material such as neoprene, spandex, stretch knit, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

FIG. 17 also illustrates said concertinaed patterns on the sole 380 of example shell 1008. In said FIG. 17, there are two octo-lateral cuts in the middle of the example shell 1008 going from the medial to lateral side of the example shell 1008. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. There are also 3 “V” shaped cuts on the lateral as well as 3 “V” shaped cuts on the medial side of the sole on example shell 1008. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. Generally, the sole section 380 is to be manufactured with flexible and durable materials that provide for expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The sole section 380 may also be composed, or partly composed of an elastic material such as neoprene, spandex, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

In operation, the requirements to make a shell are such that the concertinaed pattern provides for the upper 370 and sole 380 of the shell to expand and contract axially in conjunction with one another. In some cases, the forefoot and hindfoot sections of the shell may be pulled apart to expand the shell. This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the shell may be pushed towards one another to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 18 shows perspective views of an example shell 1009 constructed in accordance with alternative embodiments. FIG. 18 shows example shell 1009 upper 390, example shell 1009 heel cup 400, example shell 1009 sole 410, and example shell 1009 strap locations 420FIG. 18A is an isometric perspective view. FIG. 18B is a top view. FIG. 18C is a bottom view. FIG. 18D is a front view. FIG. 18E is a back view. S FIG. 18F is a right side view. FIG. 18G is a left side view.

The example shell 1009 components 390, 400, 410, 420, are constructed such that there is a concertinaed pattern sole 410 of the example shell 1009. For example, FIG. 18 the upper 390 of example shell 1009. In said FIG. 18, there is a toe box on the forefoot of the upper 390 and a tongue running through the midfoot of the upper 390. The upper also has two strap locations 420 extruding from the lateral side sole 410, wrapping around the upper 390 tongue, and down to the medial side sole 410. However, embodiments are not limited thereto and there may be anywhere from 1-100 strap locations (straps may be velcro, elastic, buckle, or any other common strapping method for shoes). Generally, the upper section 390 is to be manufactured with flexible and durable materials that provide for improved (e.g., optimal) expansion and contraction such as TPU, EVA, PU, silicone, etc. The upper section 390 and straps may also be composed, or partly composed of an elastic material such as neoprene, spandex, stretch knit, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

Additionally FIG. 18 illustrates said concertinaed patterns on the sole 410 of example shell 1009. In said FIG. 18, there are two octo-lateral cuts in the middle of the example shell 1009 going from the medial to lateral side of the example shell 1009. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. There are also 3 “V” shaped cuts on the lateral as well as 3 “V” shaped cuts on the medial side of the sole on example shell 1009. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. Generally, the sole section 410 may be manufactured with flexible and durable materials that provide for expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The sole section 410 may also be composed, or partly composed of an elastic material such as neoprene, spandex, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

In operation, the shell may be made such that the upper 390 and sole 410 of the shell expand and contract axially in conjunction with one another. In some cases, the forefoot and hindfoot sections of the shell may be pulled apart to expand the shell. This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the shell may be pushed towards one another to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 19 shows perspective views of an example shell 1010 constructed in accordance with alternative embodiments. FIG. 19 shows example shell 1010 upper 430, example shell 1010 heel cup 440, example shell 1010 strobel 450, and sole 460. FIG. 19A is an isometric perspective view. FIG. 19B is a top view. FIG. 19C is a bottom view. FIG. 19D is a front view. FIG. 19E is a back view. FIG. 19F is a right side view. FIG. 19G is a left side view.

The example shell 1010 components 430, 440, 450, 460, may be constructed such that there is an elastic material on the upper 430 and spaced out sole blocks 460 of the example shell 1010. For example, FIG. 19 illustrates an upper 430 made of an elastic material (e.g., spandex, neoprene, stretch knit, or any other common elastic material). In some cases, there may be an affordance in the heel cup 440 placed on the hindfoot upper portion. The elastic upper 430 with heel up 440 is attached to a strobel 450 which may be made out of an elastic material (e.g., spandex, neoprene, stretch knit, or any other common elastic material).

Additionally FIG. 19 illustrates spaced out blocks on the sole 460 of example shell 1010. In said FIG. 19, there are 5 separate sole blocks with some spacing in between each block. There is a block generally shaped like a hindfoot, three “hourglass” shaped blocks in the midfoot of the shoe, and a block generally shaped like a forefoot. In some embodiments, the blocks are evenly-spaced, i.e. the distance from centerline of one space between adjacent blocks to the centerline of the adjacent space is substantially equal.

Said blocks on the sole 460 may be made out of foam, rubber, or any other common sole material, that may include spacing in between and provide for expansion and contraction of the shell. However, embodiments are not limited thereto and there may be 1-100,000 blocks in the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. Generally, the sole section 460 is to be manufactured with flexible and durable materials that provide for expansion and contraction of such as TPU, EVA, PU, silicone, etc. The sole section 460 may also be composed, or partly composed of an elastic material such as neoprene, spandex, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, direct injection mold, cold cementing, 3D print, etc.

In operation, the requirements to make a shell are such that the upper 430 strobel 450, and sole 460 of the shell expand and contract axially in conjunction with one another. In some cases, the forefoot and hindfoot sections of the shell may be pulled apart to expand the shell. This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the shell may be pushed towards one another to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 20 shows perspective views of an example shell 1011 constructed in accordance with alternative embodiments. FIG. 20 shows example shell 1011 upper 470, example shell 1011 strap locations 480, and example shell 1011 sole 490. FIG. 20A is an isometric perspective view. FIG. 20B is a top view. FIG. 20C is a bottom view. FIG. 20D is a front view. FIG. 20E is a back view. FIG. 20F is a right side view. FIG. 20G is a left side view.

The example shell 1011 components 470, 480, 490, are constructed such that there is a concertinaed pattern on the upper 470 and sole 490 of the example shell 1011. For example, in FIG. 20 there are two “U” shaped cuts on the lateral side of the midfoot and two “U” shaped cuts on the medial side of the midfoot upper 470. Additionally there may be a rectangular cut in the midfoot upper 470 going through the entirety of the upper from the lateral to medial side. There is also a “U” shaped cut in the middle of the upper 470 between the medial and lateral sides of the upper 470. The upper also has one strap location 480 extruding from the lateral side sole 490, wrapping around the upper 470, and down to the medial side sole 490. However, embodiments are not limited thereto and there may be anywhere from 1-100 strap locations (e.g., straps may be velcro, elastic, buckle, or any other common strapping method for shoes). Generally, the upper section 470 is to be manufactured with flexible and durable materials that provide for improved (e.g., optimal) expansion and contraction such as TPU, EVA, PU, silicone, etc. The upper section 470 and strap 480 may also be composed, or partly composed of an elastic material such as neoprene, spandex, stretch knit, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

Additionally FIG. 20 illustrates said concertinaed patterns on the sole 490 of example shell 1011. In said FIG. 20 there are two octo-lateral shaped cuts in the middle of the example shell 1011 going from the medial to lateral side of the example shell 1011. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, octo-lateral, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. There are also 3 “V” shaped cuts on the lateral as well as 3 “V” shaped cuts on the medial side of the sole 490 on example shell 1011. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. Generally, the sole section 490 may be manufactured with flexible and durable materials that provide for expansion and contraction of the concertinaed pattern such as TPU, EVA, PU, silicone, etc. The sole section 490 may also be composed, or partly composed of an elastic material such as neoprene, spandex, etc. This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

In operation, the requirements to make a shell are such that the upper 470 and sole 490 of the shell expand and contract axially in conjunction with one another. In some cases, the forefoot and hindfoot sections of the shell may be pulled apart to expand the shell. This provides for the concertinaed pattern to adjust and expand accordingly. In some cases, the forefoot and hindfoot sections of the shell may be pushed towards one another to contract the shell. This provides for the concertinaed pattern to adjust and contract accordingly.

FIG. 21 shows perspective views of the midsole components of the adjustable shoe system constructed in accordance with alternative embodiments. FIG. 21A shows the upper midsole component consisting of upper midsole angled sections 500, upper midsole stationary section 510, and upper midsole expanding sections 520FIG. 21B shows the lower midsole angled section 530 and lower midsole hole locations 540.

The upper midsole component in FIG. 21A may be generally foot shaped and may consist of angled sections 500, stationary section 510, and expanding sections 520. The upper midsole angled sections 500, upper midsole stationary section 510, and upper midsole expanding sections 520 may be located anywhere on the upper midsole component. For example, referring to FIG. 21A, there is a stationary section 510 located on the forefoot, angled sections 500 ranging from the forefoot to the hindfoot, and expanding sections on the midfoot of the upper midsole. The angled sections 500 are constructed such that the upper midsole component is thickest at the forefoot, and is angled to gradually taper off and become thinnest when close to the hindfoot. The stationary section 510 may be flat such as to attach to a shoe shell, textured such as to support a foot or insole on top, or a combination of flat and textured surfaces. The upper midsole expanding sections 520 consist of flaps on both the lateral and medial side of the upper midsole component. For example, in FIG. 21A, there are five “U” shaped flaps on the lateral side of the upper midsole component, and five “U” shaped flaps on the medial side of the upper midsole component. The space in between the flap locations of the upper midsole expanding section 520 represents a shoe size, and thus the example in FIG. 21A represents six shoe sizes. Generally, the upper midsole component may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC, silicone, etc. The upper midsole may also be composed or partly composed of an elastic material (neoprene, spandex, stretch knit, etc.). This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

The lower midsole component in FIG. 21B may be generally ovoid shaped and may consist of angled sections 530 and has hole locations 540. The angled sections 530 range from the midfoot to the hindfoot. The hole locations 540 are located in the midfoot of the lower midsole component. The angled sections 530 and hole locations 540 may be placed anywhere on the lower midsole component. The lower midsole angled sections are constructed to ensure a maximum thickness near the hindfoot, and may be angled to gradually taper off and include a minimum thickness when close to the forefoot. The hole locations 540 are extruded through the lower midsole component, such as to weave a string 550 (not shown) through said hole locations. Generally, the lower midsole component may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC, silicone, etc. The upper midsole may also be composed or partly composed of an elastic material (neoprene, spandex, stretch knit, etc.). This component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

The midsole may be created by assembling the elements in FIG. 21 (21A, 21B). In operation, the upper midsole angled section 500 generally aligns with the lower midsole angled section 530. The upper midsole expanding section 520 generally aligns with the lower midsole hole locations 540. When in use, the lower midsole subducts underneath the upper midsole, creating a generally foot shaped midsole. The user, or someone knowledgeable in the art, may want to align the string 550 (not shown) in between the flaps of the upper midsole expanding section 520 and through the lower midsole hole locations 540. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. Once the string has been maneuvered, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 22 shows two perspective views and a side view of the assembled midsole components of the adjustable shoe system in the smallest size, constructed in accordance with alternative embodiments. FIG. 22 shows the assembled midsole component consisting of upper midsole stationary section 510, upper midsole expanding section 520 upper midsole footbed section 521, lower midsole stationary section 531, lower midsole hole locations 540, and string 550. Also included but not shown are the upper midsole angled sections 500 and lower midsole angled sections 530.

The midsole assembly in FIG. 22 consists of an upper midsole 500, 510, 520, 521, that may generally be foot shaped, with a stationary section 510 that may be attached partly to an example shell. In some cases, the midsole assembly may consist of a lower midsole that may generally be ovoid shaped 530, 531, 540, with a stationary section 531 that may be attached partly to an example shell. The upper midsole component and lower midsole component are then attached by a string 550. Said string 550 should be made of a thin, flexible, and durable material (ex. Nylon line, monofilament line, braided line, dacron line, etc.). Said string wraps over the top of the upper midsole footbed section, in between flaps of the upper midsole expanding region 520 and through the lower midsole hole locations 540. Once wrapped through the hole locations 540, the string may then be tied into a knot, or welted together. FIG. 22 illustrates the midsole in the smallest size, wherein the string 550 is placed in between the flaps of the upper midsole expanding region 520 closest to the forefoot of the midsole.

In operation, the user may first line up the string 550 in between the flaps on the upper midsole expanding section 520 that is closest to the forefoot to lock the midsole into the smallest size for the user. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. In some cases, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section once the string may have been maneuvered. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 23 shows a perspective view of the midsole assembly, with the flaps from the expanding section 520 being bent to promote a size change, constructed in accordance with alternative embodiments. FIG. 23 shows the upper midsole expanding sections 520 upper midsole footbed section 521, and string 550.

The midsole assembly in FIG. 23 consists of an upper midsole 500 (not shown), 510 (not shown), 520, 521, that may generally be foot shaped, and a footbed 521 that may be designed to support healthy foot development. For example, in FIG. 23, the footbed 521 is a flat surface, which provides an ease for the user to begin walking. In some cases, features such as arch support, heel support, custom fit, etc. may be included. In FIG. 23, the flaps on the lateral and medial sides of the shoe closest to the forefoot may be bent to promote a size expansion since the upper midsole component is made of a flexible material. The string 550 may still be in a position closest to the forefoot of the midsole assembly. In the bent position, the flaps on the upper midsole component 520 may be in a position where the string 550 may be maneuvered around the flaps.

In operation, the user may first line up the string 550 in between the flaps on the upper midsole expanding section 520 that is closest to the forefoot to lock the midsole into the second smallest size for the user. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string is maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. In some cases, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section once the string may have been maneuvered. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 24 shows a perspective view of the midsole assembly, that has been adjusted to the second smallest size. FIG. 24 shows the upper midsole expanding sections 520 upper midsole footbed sections 521, lower midsole angled section 530 and string location 550.

The midsole assembly represented in FIG. 24 may be generally foot shaped and may be adjusted to the second smallest size. The string 550 may be placed in between the flaps of the upper midsole expanding region 520 second closest to the forefoot of the midsole. In some cases, part of the lower midsole angled section 530 closest to the hindfoot of the shoe is revealed when looking at a top view of the midsole assembly when the size of the shoe is adjusted. In some cases, the upper midsole is thinnest towards the hindfoot due to the upper midsole angled sections (not shown) 500. Concurrently, the lower midsole is thickest toward the hindfoot due to the lower midsole angled sections 530. In some cases, the midsole structure that is present as a result of a size change may be an improved (e.g., optimal) footbed surface due to the angled profile elements.

In operation, the user may first line up the string 550 in between the flaps on the upper midsole expanding section 520 that is closest to the forefoot to lock the midsole into the second smallest size for the user. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. In some cases, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section once the string may have been maneuvered. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 25 shows two perspective views and a side view of the assembled midsole components of the adjustable shoe system in the largest size, constructed in accordance with alternative embodiments. FIG. 25 shows the assembled midsole components consisting of upper midsole angled sections 500, upper midsole stationary sections 510, upper midsole expanding sections 520 upper midsole footbed section 521, lower midsole angled section 530 lower midsole stationary section 531, lower midsole hole locations 540, and string location 550.

The midsole assembly in FIG. 25 consists of an upper midsole 500, 510, 520, 521, that may be generally foot shaped, with a stationary section 510 that is to be attached partly to an example shell. The midsole assembly may consist of a lower midsole that is generally ovoid shaped 530, 531, 540, with a stationary section 531 that is to be attached partly to an example shell. The upper midsole component and lower midsole component are then attached by a string 550. FIG. 25 illustrates the midsole in the largest size, wherein the string 550 is placed in between the flaps of the upper midsole expanding region 520 closest to the hindfoot of the hindfoot of the midsole. As shown in FIG. 25A, when the size of the midsole assembly is increased, the lower midsole angled section 530 may be exposed. As shown in FIG. 25B, when the size of the midsole assembly is increased, the upper midsole angled section 500 may be exposed. In some cases, the upper midsole may be thinnest towards the hindfoot due to the upper midsole angled sections 500. Concurrently, the lower midsole is thickest toward the hindfoot due to the lower midsole angled sections 530. As shown in FIG. 25C, the midsole structure that is present as a result of a size change is an optimal footbed surface due to the angled profile elements.

In operation, the user may line up the string 550 in between the flaps on the upper midsole expanding section 520 that is closest to the hindfoot to lock the midsole into the largest size for the user. In some cases, a flap location is bent on both the lateral and medial side of the upper midsole to lock the midsole into the largest size or to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. In some cases, the shoe size is locked in between the next set of flaps on the upper midsole expanding section once the string may have been maneuvered. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 26 shows a midsole assembly embodiment that includes an upper midsole hindfoot flap 560. FIG. 26 shows the upper midsole expanding section 520 upper midsole footbed section 521, string location 550, and upper midsole hindfoot flap 560.

The midsole assembly in FIG. 26 consists of a midsole 500, 510, 520, 521, 530 (not shown), 531 (not shown), 541 (not shown), 550, 560, that is generally foot shaped. This midsole embodiment includes an upper midsole hindfoot flap 560, which is part of the upper midsole structure. This upper midsole flap 560 embodiment is a thin extrusion towards the hindfoot, in the shape of a pentagon, with the two parallel sides having a longer length than the other sides. In some cases, the upper midsole hindfoot flap 560 may wrap under the lower midsole structure. Said embodiment may ensure that the upper midsole structure is more secure by keeping the thin portion of the upper midsole footbed 521 from folding or moving.

In operation, the upper midsole hindfoot flap 560 may be wrapped underneath the lower midsole structure when putting together the midsole assembly. Accordingly, the hindfoot portion of the upper midsole structure may be more securely fastened to the midsole assembly. When the size of the midsole assembly is increased, the upper midsole hindfoot flap may move closer to the hindfoot of the midsole assembly to adapt to the size change.

FIG. 27 shows a midsole assembly embodiment in the smallest size that includes an upper midsole hindfoot flap 560 wrapped under the lower midsole structure. FIG. 27 shows the upper midsole stationary section 510, upper midsole expanding sections 520 lower midsole stationary section 531, lower midsole hole locations 540, string location 550, and upper midsole hindfoot flap 560.

The midsole assembly in FIG. 27 consists of a midsole 500 (not shown), 510, 520, 521 (not shown), 530 (not shown), 531, 540, 550, 560, that may be generally foot shaped. The midsole embodiment includes an upper midsole hindfoot flap 560, which is part of the upper midsole structure. The upper midsole hindfoot flap may be wrapped under the lower midsole stationary section 531. Generally, the upper midsole hindfoot flap 560 may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC, silicone, etc. The upper midsole hindfoot flap 560 may also be composed or partly composed of an elastic material (neoprene, spandex, stretch knit, etc.). The upper midsole hindfoot flap 560 may be constructed with the same material as the rest of the upper midsole component. The component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc. In some cases, the lower midsole stationary section 531 may include a connecting piece with a subsequent connection location on the lower midsole stationary section 531 or a subsequent connection location on an example shell.

In operation, the upper midsole hindfoot flap 560 may be wrapped under the lower midsole stationary section 531. In some cases, the end of the upper midsole hindfoot flap 560 may regress towards the hindfoot of the midsole assembly to accommodate said size change in case of a large shoe size. In some cases, the end of the upper midsole hindfoot flap 560 may progress towards the forefoot of the midsole assembly to accommodate said size change in case of a small shoe size.

FIG. 28 shows a midsole assembly embodiment in the largest size that includes an upper midsole hindfoot flap 560 wrapped under the lower midsole structure. FIG. 28 shows the upper midsole angled section 500, upper midsole stationary section 510, upper midsole expanding section 520 lower midsole stationary section 531, lower midsole hole locations 540, string location 550, and upper midsole hindfoot fap 560.

The midsole assembly in FIG. 28 consists of a midsole 500, 510, 520, 521 (not shown), 530 (not shown), 531, 540, 550, 560, that may generally be foot shaped. The midsole embodiment includes an upper midsole hindfoot flap 560, which is part of the upper midsole structure. The upper midsole hindfoot flap may be wrapped under the lower midsole stationary section 531.

In operation, the upper midsole hindfoot flap 560 may be wrapped under the lower midsole stationary section 531. In some cases, the end of the upper midsole hindfoot flap 560 may regress towards the hindfoot of the midsole assembly to accommodate said size change since the midsole may be the largest size.

FIG. 29 shows perspective views of the midsole components inserted into the example shell 1012 at the smallest shoe size constructed in accordance with the present disclosure. FIG. 29 shows a sweep embodiment 330, upper midsole expanding sections 520 upper midsole footbed location 521, string location 550, example shell 1012, forefoot strap location 580, and hindfoot strap location 590.

The example shell 1012 may generally be shaped like the outsole of a sneaker. The example shell 1012 has a concertinaed pattern located on the midfoot sole of example shell 1012. FIG. 29B illustrates said concertinaed patterns on the sole of example shell 1012. In said FIG. 29B, there are four oval shaped cuts that run from the lateral to medial side of the shell. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. Spaced in between said oval shaped cuts, there are three smaller oval shaped cuts located near the midfoot of said example shell, with three “U” shaped cuts on the adjacent lateral side of the shell and three “U” shaped cuts on the adjacent medial side of the shell. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met.

In some cases, a traction pattern may be debossed into the outsole of said example shell 1012 on the sections of the example shell 1012 that do not include concertinaed patterns. Said example shell may include an embossed or debossed traction pattern depending on the manufacturing method. Said example shell 1012 may include walls extruded upwards around the midsole assembly, with a sweep embodiment. The midsole assembly may be inserted into an example shell, and be removable such as to clean, recycle, etc. The midsole assembly may also be attached or partly attached to an example shell by the stationary sections 510, 531 (e.g. glue, stitching, welding, location features, ultrasonic bonding, velcro, magnets, mechanical fasteners, etc.). The expandable shoe illustrated in FIG. 29 represents a sandal, however, the midsole assembly may also be used with other types of shells.

FIG. 29A illustrates forefoot strap locations 580 and hindfoot strap locations 590. One forefoot strap 580 may be attached (e.g. glue, stitching, welding, location features, ultrasonic bonding, velcro, magnets, mechanical fasteners, etc.) to the lateral side of the upper midsole structure while the other forefoot strap 580 may be attached to the medial side of the upper midsole structure. The hindfoot strap locations 590 are attached to the lower midsole structure, wrapping around the ankle of the user. The forefoot straps 580 and hindfoot straps 590 may include a connecting feature and connection location (e.g. velcro, mechanical fasteners, elastic band, etc.) providing adjustability to the user.

In operation, the user may first line up the string 550 in between the flaps on the upper midsole expanding section 520 that is closest to the forefoot to lock the midsole into the smallest size for the user. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. Once the string has been maneuvered, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section. The user, or someone knowledgeable in the art then repeats the steps illustrated to adjust the midsole sizing in accordance with the user's foot size. Concurrently, the concertinaed pattern on the shell has adapted to the size adjustment indicated with the midsole assembly. Once the optimal shoe size has been adjusted for and the concertinaed pattern has expanded or contracted around the midsole assembly, the user may be able to wear the shoe.

Additionally or alternatively, the midsole assembly may be used with another example shell. Additionally or alternatively, the forefoot and hindfoot straps may be attached to the shell.

FIG. 30 shows perspective views of the expanding shoe components constructed in accordance with the present disclosure. FIG. 30A and FIG. 30B illustrate perspective views of the upper midsole structure with forefoot straps attached. FIG. 30 shows upper midsole angled sections 500, upper midsole stationary section 510, upper midsole expanding sections 520 upper midsole footbed section 521, upper midsole hindfoot flap 560, upper midsole strap locations 580, upper midsole strap connecting piece 600, upper midsole strap connection location 610, and upper midsole connecting pieces 620FIG. 30C and FIG. 30D show perspective views of the lower midsole structure with hindfoot straps attached. FIG. 30C and FIG. 30D show the lower midsole angled section 530 lower midsole stationary section 531, lower midsole hole locations 540, hindfoot strap locations 590, hindfoot strap connecting piece 630, hindfoot strap connection location, and lower midsole connecting pieces 650. FIG. 30E and FIG. 30F show perspective views of example shell 1013. FIG. 30E and FIG. 30F show a sweep embodiment 330, example shell 1013, and example shell 1013 connection locations 670.

The upper midsole structure with forefoot straps attached in FIG. 30A and FIG. 30B may generally be foot shaped, with straps extruded by the forefoot on both the lateral and medial side of the structure. The forefoot strap 580 extruding to the lateral side of the upper midsole structure may include a connecting piece 600, which for example in FIG. 30A and FIG. 30B may be a cantilever snap hook. The forefoot strap 580 extruding to the medial side of the upper midsole has connection locations 610, which are oval shaped cuts to where the connecting piece 600 can securely attach through. The connecting piece 600 and connection location 610 may be attached by another mechanism (e.g. velcro, mechanical fasteners, elastic band, etc.). The upper midsole connecting pieces 620 may include five cantilever snap hooks, extruded on the outer perimeter of the upper midsole. Two connecting pieces 620 are on the lateral side of the upper midsole, two connecting pieces 620 may be on the medial side of the upper midsole, and one connecting piece 620 may be on the perimeter of the upper midsole structure closest to the toe box area. In some cases, the upper midsole connecting pieces 620 may include a circular hole through the center of the snap hook. Accordingly, a tool (e.g. string, pliers, tweezers, lacing needle, suction cup tool, etc.) to weave the connecting piece 620 through the connection location 670 (not shown) may be used easily. Other affordances may be included on the connecting pieces 620 (e.g. extended tabs, textured surface, guide channels, built in loop, rounded edges, color coding. etc.) which enable one knowledgeable in the art to easily weave the connecting pieces 620 through the connection locations 670 (not shown).

In some cases, the upper midsole in FIG. 30A and FIG. 30B may include an upper midsole hindfoot flap 560, wherein there is an oval shaped cutout in the middle of the flap. The cutout may be included to wrap around a lower midsole structure connecting piece 650. In some cases, the upper midsole component may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC, silicone, etc. The upper midsole may be composed or partly composed of an elastic material (neoprene, spandex, stretch knit, etc.). The component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

The lower midsole structure with hindfoot straps attached in FIG. 30C and FIG. 30D may be ovoid shaped with straps extruded by the hindfoot on both the lateral and medial sides of the structure. The hindfoot strap 590 extruding to the lateral side of the lower midsole structure has two connecting pieces 630 which for example in FIG. 30C and FIG. 30D are cantilever snap hooks. The hindfoot strap 590 extruding to the medial side of the upper midsole may include connection locations 640, which are oval shaped cuts through which the connecting pieces 630 can securely attach. The connecting piece 630 and connection location 640 may be attached by a mechanism (e.g., velcro, mechanical fasteners, elastic band, etc.). The lower midsole structure connecting pieces 650 includes three cantilever snap hooks, extruded on the outer perimeter of the lower midsole structure. One connecting piece 650 may be on the lateral side of the lower midsole structure, one connecting piece 650 may be on the medial side of the lower midsole structure, and one connecting piece 650 may be on the perimeter of the lower midsole structure closest to the heel. In some cases, the lower midsole connecting pieces 650 may include a circular hole through the center of the snap hook. Accordingly, a tool (e.g. string, pliers, tweezers, lacing needle, suction cup tool, etc.) to weave the connecting piece 650 through the connection location 670 (not shown) may be easily used. Other affordances may be included on the connecting pieces 650 (e.g. extended tabs, textured surface, guide channels, built in loop, rounded edges, color coding. etc.) that enable one knowledgeable in the art to easily weave the connecting pieces 650 through the connection locations 670 (not shown). In some cases, the upper midsole component may be manufactured with flexible and durable material(s) such as TPU, EVA, PU, PVC, silicone, etc. The upper midsole may be composed or partly composed of an elastic material (neoprene, spandex, stretch knit, etc.). The component may be manufactured using a variety of techniques such as compression mold, injection mold, 3D print, etc.

The example shell 1013 shown in FIG. 30E and FIG. 30F has a construction similar to that of the example shell 1012. In example shell 1013, the walls extruded upwards around the midsole assembly include connection locations 670. For example, in FIG. 30E, there are five connection locations 670 on the forefoot shell walls and three connection locations 670 on the hindfoot shell walls. Said connection locations may be rectangular cuts, and may align with the upper midsole structure connecting pieces 620 and lower missile structure connecting pieces 650. In some examples, there may be between 1-1,000 connecting pieces 620, 650, and between 1-1,000 connection locations 670.

In some cases, the forefoot strap 580 with connecting piece 600 may be maneuvered above the upper midsole footbed section 521 since the upper midsole structure may be made with flexible and durable materials. The forefoot strap 580 with connection locations 610 may be maneuvered above the upper midsole footbed section 521. The forefoot strap connecting piece 600 may be connected to a forefoot strap connection location 610 that suits the user. The hindfoot strap 590 with connecting pieces 630 may be maneuvered above the upper midsole footbed section 521. The hindfoot strap 590 with connection locations 640 may be maneuvered above the upper midsole footbed section 521. The hindfoot strap connecting pieces 630 may be connected with the hindfoot strap connection locations 640 that suit the user. The user, or someone knowledgeable in the art, may want to align the string 550 in between the flaps of the upper midsole expanding section 520 and through the lower midsole hole locations 540. The upper midsole connecting pieces 620 may be aligned with the corresponding example shell 1013 connection locations 670 to connect the upper midsole structure to said example shell 1013. The lower midsole connecting pieces 650 may be aligned with the corresponding example shell 1013 connection locations 670 to connect the lower midsole structure to said example shell 1013. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. Once the string has been maneuvered, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 31 shows perspective views of the midsole components inserted into the example shell 1013, constructed in accordance with alternative embodiments. FIG. 31A shows sweep embodiment 330, upper midsole expanding sections 520 upper midsole stationary section 521, string location 550, forefoot strap locations 580, hindfoot strap locations 590, forefoot strap connecting piece 600, forefoot strap connection locations 610, upper midsole connecting pieces 620 hindfoot strap connecting pieces 630 hindfoot strap connection locations 640, lower midsole structure connecting pieces 650, example shell 1013, and example shell 1013 connection locations 670. FIG. 31B shows upper midsole expanding section 520 hindfoot strap location 590, upper midsole structure connecting pieces 620 hindfoot strap connecting piece 630 hindfoot strap connection locations 640, lower midsole structure connecting pieces 650, example shell 1013, and example shell 1013 connection locations 670.

The assembled shoe in FIG. 31 may generally be foot shaped, and may include a forefoot strap 580 with a connecting piece 600 connected to a connection location 610 on forefoot strap 580. The hindfoot strap 590 with connecting pieces 630 may be connected to a connection location 640 on the hindfoot strap 590. The upper midsole connecting pieces 620 may be connected to example shell 1013 connection locations 670. The lower midsole connecting pieces 650 may be connected to example shell 1013 connection locations 670. For example, in FIG. 31 the connecting pieces 600, 620, 630, 650, may be cantilever snap hooks, and connection locations 610, 640, 670, may be rectangular cutouts. The example shell 1013 may generally be shaped like the outsole of a sneaker. The example shell 1013 may include a concertinaed pattern located on the midfoot sole of example shell 1013.

Referring to FIG. 31B, there are four oval shaped cuts that run from the lateral to medial side of the shell. However, embodiments are not limited thereto and there may be 1-10,000 cuts in the middle of the shell sole which may consist of a shape (e.g., triangular, rectangular, diamond, trapezoid, hexagonal, oblong, or any other common shape) so long as expanding parameters are met. Spaced in between said oval shaped cuts, there are three smaller oval shaped cuts located near the midfoot of said example shell, with three “U” shaped cuts on the adjacent lateral side of the shell and three “U” shaped cuts on the adjacent medial side of the shell. However, embodiments are not limited thereto and there may be 1-10,000 medial or lateral cuts which may be any shape (e.g. “U” shaped, “V” shaped “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped or any other common cut shape) so long as expanding parameters are met. In some cases, a traction pattern may be debossed into the outsole of said example shell 1013 on the sections of the example shell 1013 that may not include concertinaed patterns. Said example shell may include an embossed or debossed traction pattern depending on the manufacturing method. Said example shell 1013 includes walls extruded upwards around the midsole assembly, with a sweep embodiment. The example shell 1013 connection locations 670 may be located on the walls extruded upwards around the midsole assembly. The midsole assembly may be inserted into an example shell, and be removable such as to clean, recycle, etc. The midsole assembly may also be attached or partly attached to an example shell by the stationary sections 510, 531 (e.g. glue, stitching, welding, location features, ultrasonic bonding, velcro, magnets, mechanical fasteners, etc.). The expandable shoe illustrated in FIG. 31 represents a sandal, however, the midsole assembly may also be used with other types of shells.

In some cases, the forefoot strap 580 with connecting piece 600 may be maneuvered above the upper midsole footbed section 521 since the upper midsole structure may be made with flexible and durable materials. The forefoot strap 580 with connection locations 610 may be maneuvered above the upper midsole footbed section 521. The forefoot strap connecting piece 600 may be connected to a forefoot strap connection location 610 that suits the user. The hindfoot strap 590 with connecting pieces 630 may be maneuvered above the upper midsole footbed section 521. The hindfoot strap 590 with connection locations 640 may be maneuvered above the upper midsole footbed section 521. The hindfoot strap connecting pieces 630 may be connected with the hindfoot strap connection locations 640 that suit the user. The upper midsole connecting pieces 620 may be pressed onto or through example shell 1013 connection locations 670. The lower midsole connecting pieces 650 may be pressed onto or through example shell 1013 connection locations 670.

The user, or someone knowledgeable in the art, may want to align the string 550 in between the flaps of the upper midsole expanding section 520 and through the lower midsole hole locations 540. The upper midsole connecting pieces 620 may be aligned with the corresponding example shell 1013 connection locations 670 to connect the upper midsole structure to said example shell 1013. The lower midsole connecting pieces 650 may be aligned with the corresponding example shell 1013 connection locations 670 to connect the lower midsole structure to said example shell 1013. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole since the upper midsole structure is made with flexible and durable materials. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. In some cases, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section after the string has been maneuvered. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 32 shows an exploded view and a perspective view of the midsole and upper components constructed in accordance with alternative embodiments. FIG. 32A shows upper midsole expanding sections 520 upper midsole stationary section 521, string location 550, forefoot strap locations 580, hindfoot strap locations 590, forefoot strap connecting piece 600, forefoot strap connection locations 610, upper midsole connecting pieces 620 hindfoot strap connecting pieces 630 hindfoot strap connection locations 640, lower midsole structure connecting pieces 650, upper midsole connection locations 680, and lower midsole connection locations 690. FIG. 32B shows upper midsole stationary section 510, upper midsole expanding section 520 lower midsole stationary section 531, lower midsole hole locations 540, string location 550, hindfoot strap location 590, upper midsole connecting pieces 620 hindfoot strap connecting piece 630 hindfoot strap connection locations 640, lower midsole structure connecting pieces 650, upper midsole connection locations 680, and lower midsole connection locations 690.

The midsole and upper components in FIG. 32 may generally be foot shaped. The forefoot strap 580 on the lateral side of the shoe may include a connecting piece 600 on both ends of the strap. The forefoot strap 580 on the medial side of the shoe may include a connecting piece 600 on one end of the strap, and a set of connection locations 610 on the other side of the forefoot strap. One of the connecting pieces 600 on the lateral side forefoot strap 580 may align with one of the connection locations 610 on the medial side forefoot strap 580. The upper midsole structure may include two connection locations 680 to form a connection with the connecting pieces 600. The hindfoot strap 590 on the lateral side of the shoe may include three connecting pieces 630 on the ends of the strap. The hindfoot strap 590 on the medial side of the shoe may include connection locations 640 on two of the straps ends, and one connecting piece 630 on the other end of the strap. Two of the connecting pieces on the lateral side strap 590 may align with a connection location 640 on the medial side strap 590. A connecting piece 630 on both the lateral and medial side straps 590 may align with a lower midsole connection location 690, thus completing the upper of the shoe. For example, in FIG. 32, the connecting pieces 600, 630 may be cantilever snap hooks whilst the connection locations 610, 640, 680, 690 may be rectangular cutouts. Additionally the midsole components may include an upper midsole expanding section 520 consisting of five flaps on the medial side of the midsole, and five flaps on the lateral side of the midsole. For example, the midsole may be of the smallest size, where the string 550 may be weaved between the lower midsole hole locations 540, and between the flaps on the upper midsole expanding region 520 closest to the forefoot. The upper midsole may include five connecting pieces 620 that may align with a connection location on an example shell. The lower midsole may include three connecting pieces 650 which may align with a connection location on an example shell. For example, as shown in FIG. 32, said connecting pieces 620, 650 may be cantilever snap hooks which may align with a cutout on an example shell.

In some examples, two of the forefoot strap connecting pieces 600 may be attached to the upper midsole connection locations 680. The forefoot strap connecting piece 600 may be connected to a forefoot strap connection location 610 that suits the user. In some examples, two of the hindfoot strap connection locations 630 may be connected to lower midsole connection locations 690. The two hindfoot strap connecting pieces 630 may then be connected to the hindfoot strap connection locations 640. The rest of the operation may be similar to that of FIG. 31 wherein the user, or someone knowledgeable in the art, may want to align the string 550 in between the flaps of the upper midsole expanding section 520 and through the lower midsole hole locations 540. The upper midsole connecting pieces 620 may be aligned with the corresponding example shell connection location to connect the upper midsole structure to said example shell. The lower midsole connecting pieces 650 may be aligned with the corresponding example shell connection locations to connect the lower midsole structure to said example shell. In some cases, a flap location may be bent on both the lateral and medial side of the upper midsole to change the shoe size. Then, the string may be maneuvered around the flap of the upper midsole expanding section 520 on both the lateral and medial side. In some cases, the shoe size may be locked in between the next set of flaps on the upper midsole expanding section once the string has been maneuvered. The user, or someone knowledgeable in the art may then repeat the steps illustrated to adjust the midsole sizing in accordance with the user's foot size.

FIG. 33 shows an example of a method 3300 A method of making an adjustable shoe according to aspects of the present disclosure. In some examples, these operations are performed by a system including a processor executing a set of codes to control functional elements of an apparatus. Additionally or alternatively, certain processes are performed using special-purpose hardware. Generally, these operations are performed according to the methods and processes described in accordance with aspects of the present disclosure. In some cases, the operations described herein are composed of various substeps, or are performed in conjunction with other operations.

At operation 3305, the system provides a midsole assembly, including a first piece including at least one first piece connection component and a second piece including a second piece connection component having at least one connection location, where each of the at least one connection location is disengageably lockable with one of the at least one first piece connection component. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32. In some cases, the operations of this step refer to or may be performed by, a connecting piece as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32. In some cases, the operations of this step refer to or may be performed by, a connection location as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3310, the system connects the first piece to the second piece by one of the at least one first piece connection component locking with that second piece connection component at one of the at least one connection location. In some cases, the operations of this step refer to or may be performed by, a connecting piece as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32. In some cases, the operations of this step refer to or may be performed by, a connection location as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3315, the system provides a shell including a sole, where the sole is axially adjustable along a length of the sole. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20. In some cases, the operations of this step refer to or may be performed by, a sole as described with reference to FIGS. 5-12, and 14-20.

At operation 3320 the system places the midsole assembly inside the shell, where the shell is axially adjustable to fit a length of the midsole assembly. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20.

In some aspects, the first piece is an upper midsole component and the second piece is a lower midsole component. In some aspects, a thickness of the upper midsole component is tapered from a forefoot of the shoe to a hindfoot of the shoe. In some aspects, a thickness of the lower midsole component is tapered from the hindfoot of the shoe to the forefoot of the shoe.

In some aspects, prior to connecting the first piece to the second piece, the lower midsole component is placed so that it subducts under the upper midsole component. In some aspects, the at least one upper midsole component connection component comprises a plurality of pairs of transverse flexible flaps. In some aspects, each pair of transverse flexible flaps comprises a medial side flap and a lateral side flap, wherein the plurality of pairs of transverse flexible flaps are spaced along a longitudinal axis of the upper midsole component so as to form a plurality of pairs of transverse slots. In some aspects, the lower midsole component connection component comprises two holes at one connection location.

Some examples of method 3300 further include disengageably locking the upper midsole component to the lower midsole component via a string, the holes, and one pair of transverse slots. Some examples of method 3300 further include disengageably locking each of the at least one first piece connection component to the second piece at one of the at least one connection location by engaging a flexible line with each of the at least one first piece connection component and the at least one connection location.

In some aspects, each of the at least one connection location and the at least one connection location comprises a feature configured to engage the line. In some aspects, the at least one first piece connection component is a snap hook. In some aspects, the at least one connection location is a plurality of connection locations, wherein each connection location is a cutout in the second piece.

In some aspects, the shell includes an upper section that is axially adjustable along a length of the upper section. In some aspects, the shell includes a concertinaed pattern on the sole. In some aspects, the shell includes a concertinaed pattern on an upper section of the sole. In some aspects, the shell is shaped like a sneaker. In some aspects, the shell is shaped like a sandal. In some aspects, the shell includes a sweep embodiment. In some aspects, the shell includes strap locations. In some aspects, the at least one first piece connection component is a connecting piece and wherein the at least one connection location comprises a plurality of connection locations. In some aspects, each of the at least one first piece connection component and the second piece connection component are selected from the group consisting of snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

FIG. 34 shows an example of a method 3400 A method of making an adjustable shoe system according to aspects of the present disclosure. In some examples, these operations are performed by a system including a processor executing a set of codes to control functional elements of an apparatus. Additionally or alternatively, certain processes are performed using special-purpose hardware. Generally, these operations are performed according to the methods and processes described in accordance with aspects of the present disclosure. In some cases, the operations described herein are composed of various substeps, or are performed in conjunction with other operations.

At operation 3405, the system provides a first midsole component including a first connecting portion. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32. In some cases, the operations of this step refer to or may be performed by, a connecting piece as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3410, the system provides a second midsole component including a second connecting portion. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32. In some cases, the operations of this step refer to or may be performed by, a connection location as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3415, the system configures the first connecting portion and the second connecting portion to engage to interlock the first midsole component and the second midsole component at a variety of defined relative locations, whereby a midsole assembly having a length is formed by the interlocking of the first midsole component to the second midsole component. In some cases, the operations of this step refer to or may be performed by, a connecting piece as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32. In some cases, the operations of this step refer to or may be performed by, a connection location as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3420 the system provides an outer shell having a concertinaed pattern. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20.

At operation 3425, the system configures the midsole assembly to expand or contract the outer shell axially to accommodate a size of the midsole assembly. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32.

At operation 3430 the system configures the outer shell to expand or contract around a shape of the midsole assembly. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32.

In some aspects, the first connecting portion and the second connecting portion are configured to engage via a snap hook and cutout mechanism. In some aspects, the first connecting portion and the second connecting portion are configured to engage via a Velcro mechanism.

In some aspects, the first midsole component comprises an elastic section. In some aspects, the outer shell comprises an upper section and a sole section. In some aspects, the outer shell is shaped like a sneaker. In some aspects, the outer shell is shaped like a sandal. In some aspects, the outer shell is shaped like a boot. In some aspects, the outer shell is shaped like a slipper. In some aspects, the outer shell is shaped like a high heel. In some aspects, the outer shell is shaped like a ballet flat.

In some aspects, the first connecting portion and the second connecting portion are selected from the group consisting of snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

FIG. 35 shows an example of a method 3500 A method of using an adjustable shoe according to aspects of the present disclosure. In some examples, these operations are performed by a system including a processor executing a set of codes to control functional elements of an apparatus. Additionally or alternatively, certain processes are performed using special-purpose hardware. Generally, these operations are performed according to the methods and processes described in accordance with aspects of the present disclosure. In some cases, the operations described herein are composed of various substeps, or are performed in conjunction with other operations.

At operation 3505, the system provides a midsole assembly, including a first piece including at least one first piece connection component and a second piece including a second piece connection component having at least one connection location, where each of the at least one connection location is disengageably lockable with one of the at least one first piece connection component. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32.

At operation 3510, the system connects the first piece to the second piece by locking one of the at least one first piece connection component with the second piece connection component at one of the at least one connection location. In some cases, the operations of this step refer to or may be performed by, a connecting piece as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32. In some cases, the operations of this step refer to or may be performed by, a connection location as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3515, the system provides a shell including a sole, where the sole is axially adjustable along a length of the sole. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20.

At operation 3520, the system places the midsole assembly inside the shell. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20.

At operation 3525, the system axially adjusts the shell to fit the length of the midsole assembly. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32.

In some aspects, the first piece of the midsole assembly comprises an upper midsole component and the second piece of the midsole assembly comprises a lower midsole component. In some aspects, a thickness of the upper midsole component is tapered from a forefoot of the shoe to a hindfoot of the shoe. In some aspects, a thickness of the lower midsole component is tapered from the hindfoot of the shoe to the forefoot of the shoe.

Some examples of the method 3500 further include, prior to connecting the first piece to the second piece, placing the lower midsole component such that it subducts under the upper midsole component.

In some aspects, the at least one upper midsole component connection component comprises a plurality of pairs of transverse flexible flaps. In some aspects, each pair of transverse flexible flaps comprises a medial side flap and a lateral side flap, wherein the plurality of pairs of transverse flexible flaps are spaced along a longitudinal axis of the upper midsole component so as to form a plurality of pairs of transverse slots.

In some aspects, the lower midsole component connection component comprises two holes at one connection location.

Some examples of the method 3500 further include disengageably locking the upper midsole component to the lower midsole component via a string, the holes, and one pair of transverse slots. Some examples of the method 3500 further include disengageably locking each of the at least one first piece connection component to the second piece at one of the at least one connection location by engaging a flexible line with each of the at least one first piece connection component and the at least one connection location.

In some aspects, each of the at least one connection location and the at least one connection location comprises a feature configured to engage the line. In some aspects, the at least one first piece connection component is a snap hook. In some aspects, the second piece of the midsole assembly comprises a lower midsole component, wherein the at least one connection location is a plurality of connection locations, wherein each of the plurality of the connection locations is a cutout in the lower midsole component. In some aspects, the shell comprises an upper section and a sole section. In some aspects, the sole of the shell comprises a concertinaed pattern. In some aspects, the shell is shaped like a sneaker. In some aspects, the shell is shaped like a sandal. In some aspects, the midsole assembly is removable from the shell. In some aspects, the shell comprises a forefoot section and a hindfoot section, wherein the shell is axially adjustable by pulling apart the forefoot and hindfoot sections of the shell.

In some aspects, the at least one first piece connection component is a connecting piece and wherein the at least one connection location comprises a plurality of connection locations. In some aspects, each of the at least one first piece connection component and the second piece connection component are selected from the group consisting of snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

FIG. 36 shows an example of a method 3600 A method of using an adjustable shoe system according to aspects of the present disclosure. In some examples, these operations are performed by a system including a processor executing a set of codes to control functional elements of an apparatus. Additionally or alternatively, certain processes are performed using special-purpose hardware. Generally, these operations are performed according to the methods and processes described in accordance with aspects of the present disclosure. In some cases, the operations described herein are composed of various substeps, or are performed in conjunction with other operations.

At operation 3605, the system provides a first midsole component including a first connecting portion and a second midsole component including a second connecting portion. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32.

At operation 3610, the system engages the first connecting portion and the second connecting portion to interlock the first midsole component and the second midsole component, thereby forming a midsole assembly having a length. In some cases, the operations of this step refer to or may be performed by, a connecting piece as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32. In some cases, the operations of this step refer to, or may be performed by, a connection location as described with reference to FIGS. 1-4, 7-9, 13, 15, and 30-32.

At operation 3615, the system provides an outer shell having a concertinaed pattern. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20.

At operation 3620 the system expands or contracts the outer shell axially around a shape of the midsole assembly. In some cases, the operations of this step refer to or may be performed by, a shell as described with reference to FIGS. 5-12, and 14-20. In some cases, the operations of this step refer to or may be performed by, a midsole assembly as described with reference to FIGS. 1-4, 7-9, 13, 15, and 21-32.

In some aspects, the first connecting portion and the second connecting portion are selected from the group consisting of snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

In some aspects, the first midsole component and the second midsole component are manufactured using a technique selected from the group consisting of compression molding, injection molding, and 3D printing. In some aspects, the first midsole component and the second midsole component are composed of a material selected from the group consisting of TPU, EVA, PU, PVC, silicone, neoprene, spandex, and stretch knit. In some aspects, the outer shell is composed of a material selected from the group consisting of TPU, EVA, PU, silicone, neoprene, spandex, and stretch knit. In some aspects, the concertinaed pattern on the outer shell is selected from the group consisting of “U” shaped, “V” shaped, “W” shaped, “J” shaped, “X” shaped, “O” shaped, “T” shaped, triangular, rectangular, diamond, trapezoid, hexagonal, and oblong.

Some examples of the method 3600 further include inserting a user's foot into the outer shell after expanding or contracting the outer shell axially around the shape of the midsole assembly. Some examples of the method 3600 further include providing a footbed on the first midsole component. Some examples of the method 3600 further include providing a sweep embodiment on the outer shell.

While the invention herein disclosed has been described by means of specific embodiments, examples and applications thereof, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope of the invention set forth in the claims.

Claims

1. An adjustable shoe, comprising: a midsole assembly, comprising: a first piece including at least one first piece connection component; anda second piece including a second piece connection component having at least one connection location, wherein the first piece is removably connected to the second piece by disengageably locking each of the at least one first piece connection component to the second piece at one of the at least one connection location; anda shell including a sole, wherein the sole is axially adjustable along a length of the sole, wherein when the midsole assembly is placed inside the shell, the shell is axially adjustable to fit a length of the midsole assembly.

2. The adjustable shoe of claim 1, wherein the first piece is an upper midsole component and the second piece is a lower midsole component.

3. The adjustable shoe of claim 2, wherein the upper midsole component includes an elastic section.

4. The adjustable shoe of claim 3, wherein the elastic section is located between two stationary sections of the upper midsole component.

5. The adjustable shoe of claim 2, wherein the lower midsole component includes a forefoot component and a heel component.

6. The adjustable shoe of claim 5, wherein the at least one first piece connection component is a connecting piece, and wherein the at least one connection location is a plurality of connection locations, and wherein the forefoot component and the heel component are connected by the connecting piece locking with one of the plurality of connection locations.

7. The adjustable shoe of claim 2, further comprising: wherein a thickness of the upper midsole component is tapered from a forefoot of the shoe to a hindfoot of the shoe, and wherein a thickness of the lower midsole component is tapered from the hindfoot of the shoe to the forefoot of the shoe and the lower midsole component subducts under the upper midsole component.

8. The adjustable shoe of claim 7, further comprising: wherein the at least one upper midsole component connection component comprises a plurality of pairs of transverse flexible flaps, wherein each pair of transverse flexible flaps comprises a medial side flap and a lateral side flap, and wherein the plurality of pairs of transverse flexible flaps are spaced along a longitudinal axis of the upper midsole component so as to form a plurality of pairs of transverse slots.

9. The adjustable shoe of claim 7, wherein the lower midsole component connection component comprises two holes at one connection location.

10. The adjustable shoe of claim 7, further comprising a string for disengageably locking the upper midsole component to the lower midsole component via the holes and one pair of transverse slots.

11. The adjustable shoe of claim 1, wherein the shell includes an upper section that is axially adjustable along a length of the upper section.

12. The adjustable shoe of claim 11, wherein the upper section includes a concertinaed pattern.

13. The adjustable shoe of claim 1, wherein the at least one first piece connection component is a snap hook and the at least one connection location is a plurality of connection locations, wherein each connection location is a cutout.

14. The adjustable shoe of claim 1, wherein each of the at least one first piece connection component and the second piece connection component are selected from the group consisting of snap hooks, Velcro, magnets, screws, pins, clasps, buckles, adhesive, button snaps, hook and loop fasteners, pressure snaps, zippers, laces, string, and interlocking tabs.

15. An adjustable shoe system comprising: a first midsole component comprising a first connecting portion;a second midsole component comprising a second connecting portion;wherein the first connecting portion and the second connecting portion are configured to engage to interlock the first midsole component and the second midsole component at a variety of relative locations, whereby a midsole assembly having a length is formed by the interlocking of the first midsole component to the second midsole component; andan outer shell having a concertinaed pattern, wherein the midsole assembly is configured to expand or contract the outer shell axially to accommodate a size of the midsole assembly, and wherein the outer shell is configured to expand or contract around a shape of the midsole assembly.

16. The adjustable shoe system of claim 15, wherein the outer shell comprises an upper section and a sole section, both having the concertinaed pattern.

17. The adjustable shoe system of claim 15, wherein the outer shell comprises an upper section and a sole section, wherein the outer shell is configured to expand or contract axially via a plurality of cuts in the upper section and in the sole section.

18. The adjustable shoe system of claim 15, wherein the outer shell comprises an upper section and a sole section, wherein the outer shell is configured to expand or contract axially via an elastic material in the upper section and in the sole section.

19. The adjustable shoe system of claim 18, wherein the sole section further comprises a plurality of evenly-spaced blocks connected to the elastic material.

20. The adjustable shoe system of claim 15, wherein the outer shell further comprises a plurality of straps configured to adjust a fit of the shoe system to a user's foot.

21. The adjustable shoe system of claim 15, wherein the first midsole component and the second midsole component are removably insertable into the outer shell.

22. The adjustable shoe system of claim 15, wherein the first midsole component and the second midsole component are attached to the outer shell via glue, stitching, welding, or other common attachment methods.

23. The adjustable shoe system of claim 15, wherein the first midsole component and the second midsole component are manufactured using compression molding, injection molding, or 3D printing.

24. The adjustable shoe system of claim 15, wherein the outer shell is shaped like a sneaker, sandal, or other common shoe types.

25. A method of making an adjustable shoe system: providing a first midsole component comprising a first connecting portion;providing a second midsole component comprising a second connecting portion;configuring the first connecting portion and the second connecting portion to engage to interlock the first midsole component and the second midsole component at a variety of defined relative locations, whereby a midsole assembly having a length is formed by the interlocking of the first midsole component to the second midsole component;providing an outer shell having a concertinaed pattern;configuring the midsole assembly to expand or contract the outer shell axially to accommodate a size of the midsole assembly; andconfiguring the outer shell to expand or contract around a shape of the midsole assembly.

26. A method of using an adjustable shoe, comprising the steps of: providing a midsole assembly, comprising a first piece including at least one first piece connection component and a second piece including a second piece connection component having at least one connection location, wherein each of the at least one connection location is disengageably lockable with one of the at least one first piece connection component;connecting the first piece to the second piece by locking one of the at least one first piece connection component with the second piece connection component at one of the at least one connection location;providing a shell including a sole, wherein the sole is axially adjustable along a length of the sole;placing the midsole assembly inside the shell; andaxially adjusting the shell to fit the length of the midsole assembly.

27. The method of claim 26, wherein the at least one connection location comprises a plurality of connection locations, further comprising the steps of: unlocking the one of the at least one first piece connection component from the one of the plurality of connection locations;disconnecting the first piece from the second piece; andreconnecting the first piece to the second piece by locking the one of the at least one first piece connection component a different one of the plurality of connection locations, whereby the length of the midsole assembly is changed.

28. The method of claim 26, wherein the at least one first piece connection component comprises a plurality of pairs of transverse flexible flaps, wherein each pair of transverse flexible flaps comprises a medial side flap and a lateral side flap, wherein the plurality of pairs of transverse flexible flaps are spaced along a longitudinal axis of the first piece so as to form a plurality of pairs of transverse slots, wherein the adjustable shoe further comprises a flexible line; wherein the step of connecting the first piece to the second piece by locking one of the at least one first piece connection component with the second piece connection component at one of the at least one connection location further comprises the flexible line disengageably locking the one of the at least one connection location with one of the plurality of pairs of transverse slots, wherein the method further comprises the step of:maneuvering the flexible line from the one of the plurality of pairs transverse slots, around at least one pair of transverse flexible flaps, and to a difference pair of the plurality of pairs of transverse slots, whereby a length of the midsole assembly is adjusted.