Patent Grant
12059052
The present invention relates to footwear, and more particularly to footwear including an entry system that eases donning and/or doffing of footwear.
Most footwear includes an upper and a sole. The sole forms a wear surface which provides a level of cushion, and in some cases energy return and shock absorption. The upper forms a void within which a wearer positions their foot. The upper typically is configured to close around a portion of the foot, to secure the upper and thus the footwear, to the foot. Some uppers include a closure, such as a lacing system, zipper or strap system, to secure the footwear to the foot. Typically, the wearer must loosen or adjust the closure to enlarge an opening for entry of the foot into the footwear, then don the footwear. Thereafter, the wearer tightens the closure to ensure the footwear will remain secured to the foot. Likewise, to doff the footwear, the wearer again loosens the closure to remove their foot from the void. Most closures require manual manipulation to don or doff the footwear. This can be tedious, and a challenge for wearers with compromised dexterity.
Some footwear manufacturers have attempted to address these issues with certain footwear constructions. In some constructions, the footwear includes an easily collapsible heel that springs back upward after a foot is inserted in the footwear. In other constructions, the footwear includes a heel that folds relative to a forefoot. A flexible band is included to snap the heel against the wearer's heel. The band can stretch to allow the heel to be removed from the wearer's heel. While these constructions can provide easy donning and doffing functionality, they can be overly complicated and sometimes prone to malfunction, alignment issues and premature failure.
Accordingly, there remains room for improvement in the construction of footwear that can be easily donned and doffed to save time and reduce frustration of the wearer.
A footwear construction is provided including an upper forefoot part, an upper heel part, an outsole including a forward part joined with the forefoot part and a rearward part joined with the heel part. The upper heel part can be selectively moveable in unison with the rearward part of the outsole from a closed mode in which the footwear is secured to a wearer's foot, to an open mode in which the footwear is open to don or doff the footwear.
In one embodiment, the footwear can include a first shank defining a recess and a second shank including an engagement rim. The second shank can be tilted away from a midsole and/or the first shank to the open mode, with the engagement rim registered in the recess to stabilize and/or hold the footwear in the open mode.
In another embodiment, the first shank can include a second recess rearward of the first recess. The second shank can include a projection extending upward therefrom and selectively registerable in the second recess when the footwear is in the closed mode. When the projection is in the second recess, this interlocking of the first and second shank can impair longitudinal sliding of the second shank relative to the first shank in the closed mode. Optionally, the recess and projection can be reversed in their formation relative to the respective first and second shanks.
In still another embodiment, the second shank can include a band or wall that extends upward along and directly engages a rear sidewall of the midsole in the closed mode. The outsole can include its own rear sidewall that is located adjacent and in a fixed relation relative to the band or wall in the closed mode and the open mode, and able to move with the band or wall of the second shank.
In yet another embodiment, the second shank can include a heel aperture rearward of the engagement rim, and forward of the optional upwardly extending band or wall of the second shank. The heel aperture can allow the midsole to move toward an upper surface of the rearward part of the outsole when the footwear is in the closed mode. The first shank optionally can include a corresponding heel aperture aligned with the one in the second shank.
In even another embodiment, the upper forefoot part can include one or more pockets, and the heel part can include wings that slidably fit therein. The wings can cooperate to secure the footwear in the closed mode and/or limit the opening of the footwear in the open mode to impair overextension of the heel part relative to the forefoot part.
In a further embodiment, the wings can include a first wing and a second wing disposed on opposite lateral and medial sides of the footwear. Each wing can curve inward toward one another over a portion of an instep of the upper to cooperatively secure the footwear in the closed mode.
In still a further embodiment, the pockets can include a first pocket having a first interior panel that faces toward a wearer's foot and a first exterior panel that is spaced from the first interior panel and joined with the first exterior panel. The first wing can be slidably disposed between the first interior panel and the first exterior panel. Further, the second pocket can include a second interior panel that faces toward a wearer's foot and a second exterior panel that is spaced from the second interior panel and joined with the second exterior panel. The second wing can be slidably disposed between the second interior panel and the second exterior panel.
In still yet a further embodiment, the first wing can project farther into the first pocket in the closed mode than in the open mode. Likewise, the second wing can project farther into the second pocket in the closed mode than in the open mode.
In even a further embodiment, the midsole can include a rear sidewall and a heel lock ridge that projects around a portion of the rear sidewall of the midsole. The second shank can include a rearward rim, band or wall that projects upward and includes a heel lock recess. The heel lock ridge snaps into the heel lock recess so as to attain the closed mode. In some cases, the interfitment of the ridge in the recess produces an audible sound to the wearer, thereby confirming to the wearer that the footwear is secured in the closed position and ready for normal activity and use.
In another embodiment, the first shank and the second shank are connected via an axle projecting through at least one of the first shank and the second shank. The axle can be in the form of a rod or one or more pins. Where the axle comprises a rod, it can extend through the first shank and the second shank so that the second shank pivots about a pivot axis relative to the first shank when the second shank tilts away from the midsole. Where the axle comprises one or more pins, it can include a first pin extending into a first aperture on a first side of a longitudinal axis of the footwear, and a second pin extending into a second aperture on a second side of the longitudinal axis.
In still another embodiment, the second shank can include an engagement rim. The first shank can include multiple ridges. The engagement rim can ride over the ridges in transitioning to the open mode, locking adjacent at least one of the ridges when the open mode is attained. The engagement rim can also or alternatively ride over the ridges in transitioning to the closed mode, locking adjacent at least one of the ridges when the open mode is attained.
In yet another embodiment, the first and second shanks can engage one another via a projection in a recess to lock the upper heel part in the open mode relative to the upper forefoot part so that the user can don or doff the footwear. In some cases, when the projection enters the recess, the interaction of the components produces an audible feedback to alert the user that the open mode is fully attained.
In even another embodiment, the first shank can be installed in a midsole recess, while the second shank can include a barn configured to extend around a part of the rear of the midsole when in the closed mode.
The present footwear construction provides benefits in easy donning and doffing of footwear that previously have not been achievable. Where the shank interlocks with first and second recesses, footwear can effectively stabilize in the open mode or closed mode. Where the footwear includes one or more wings that are captured by respective pockets, the footwear can be impaired from over-extending from the open shoe mode. In cases where the wings are inwardly disposed, the wings can further clamp or secure the heel part in place relative to the forefoot part of the footwear in the closed mode to better secure the heel part in that position. In applications where the heel lock is included, that lock can provide a rigid and secure locking for the footwear in the closed mode, yet still provide a durable and wear-resistant lock having an extended wear life. The heel lock also can provide an audible feedback to a wearer to confirm that the footwear is secured in a closed mode for further activity and use.
These and other objects, advantages, and features of the invention will be more fully understood and appreciated by reference to the description of the current embodiment and the drawings.
Before the embodiments of the invention are explained in detail, it is to be understood that the invention is not limited to the details of operation or to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings. The invention may be implemented in various other embodiments and of being practiced or being carried out in alternative ways not expressly disclosed herein. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. Further, enumeration may be used in the description of various embodiments. Unless otherwise expressly stated, the use of enumeration should not be construed as limiting the invention to any specific order or number of components. Nor should the use of enumeration be construed as excluding from the scope of the invention any additional steps or components that might be combined with or into the enumerated steps or components.
A current embodiment of the footwear is illustrated in
Although the current embodiment is illustrated in the context of an athletic shoe, the components, features and function thereof can be incorporated into any type or style of footwear, including performance shoes, trail shoes and boots, work boots, all-terrain shoes, hiking shoes, running shoes, sneakers, conventional tennis shoes, walking shoes, multisport footwear, casual shoes, dress shoes or any other type of footwear or footwear components. It also should be noted that directional terms, such as “vertical,” “horizontal,” “top,” “bottom,” “upper,” “lower,” “inner,” “inwardly,” “outer” and “outwardly,” are used to assist in describing the invention based on the orientation of the embodiments shown in the illustrations. Further, the terms “medial,” “lateral” and “longitudinal” are used in the manner commonly used in connection with footwear. For example, when used in referring to a side of the shoe, the term “medial” refers to the inward side (that is, the side facing the other shoe) and “lateral” refers to the outward side. When used in referring to a direction, the term “longitudinal direction” refers to a direction generally extending along the length of the shoe between toe and heel, and the term “lateral direction” refers to a direction generally extending across the width of the shoe between the medial and lateral sides of the shoe.
The use of directional terms should not be interpreted to limit the invention to any specific orientation. Further, as used herein, the term “arch region” (or arch or midfoot) refers generally to the portion of the footwear or sole assembly corresponding to the arch or midfoot of the wearer's foot; the term “forefoot region” (or forefoot) refers generally to the portion of the footwear forward of the arch region corresponding to the forefoot (for example, including the ball and the toes) of a wearer's foot; and the term “heel region” (or heel) refers generally to that portion of the footwear rearward of the arch region corresponding to the heel of the wearer's foot. The forefoot region 12, arch region or mid-foot region 14, and heel region 16 generally are identified in
The footwear 10 can include the upper 20 having the upper forefoot part 21, the upper heel part 30, a midsole 40 and/or outsole 50. The upper 20 can be formed from a variety of material elements joined together to cover at least a portion of the wearer's foot. The material elements can be selected based on the intended uses of the article of footwear 10, and can include synthetic textiles, mesh textiles, polymers or leather, for example. Although not shown, the upper 20 can include one or more closure elements, including for example, shoelaces, cords, lace locks and the like (not shown). These closure elements can be tightened a desired amount to conform to a wearer's foot, and left in that configuration indefinitely due to the closing functionality of the footwear via the forefoot part 17 and heel part 11. The upper 20 additionally includes an upper opening 19 for receiving the wearer's foot and a lower periphery for attachment to the sole assembly. This opening 19 can be enlarged from a smaller dimension D1 when the footwear 10 is in the closed mode shown in
A footbed (not shown) can be positioned within the void defined by the upper and can be non-stretchable and lightweight and joined to the upper to provide a void for receipt of the wearer's foot. The footbed can be constructed from a sheet of material, such as foam, EVA, PU, latex, gel or other materials, and by virtue of its compressibility, provide cushioning, and may also conform to the foot in order to provide comfort, support, and stability. The lower peripheral allowance or edge of the upper can be stitched, cemented, or otherwise fastened to the footbed around the perimeter of the footbed. The sole assembly including the midsole and outsole can be combined with any other type or style of upper construction capable of being suitably joined with it, for example, a Strobel construction. The joining of the sole assembly/outsole and the upper can be accomplished using adhesives, cement, injection molding, pour molding or any other technique used to join an upper and sole assembly.
With reference to
With reference to
The upper forefoot part 21 can be joined with the forward part 51 of the outsole, optionally with the midsole 40 being disposed there between or adjacent to at least one of these components. Generally, the upper forefoot part 21 does not move relative to the forward part 51 of the outsole 50. These components can remain stationary and fixed relative to one another in the open and close modes. Likewise, the upper forefoot part 21 and lower periphery 21P can be fixedly and securely joined to the midsole 40 throughout the forefoot portion 12 and at least a portion of the arch region 14 and in some cases the heel region 16. Optionally, the upper forefoot part 21 does not wrap around the rearmost extremity of the midsole and/or outsole in the heel region 16.
The upper 20 also can include the upper heel part 30 which extends within the heel region 16 and in some cases a portion of the arch region 14 and/or slightly into the forefoot region 12. The upper heel part 30 can include a heel part collar 33 that extends around the rearward portion of the heel region 16 of the footwear and the opening 19 in general, at least in the closed mode shown in
The rearward most portion 33R of the collar 33 also can move relative to the instep apex 22A of the collar 22. For example, as shown in
As shown in
Optionally, the wall 52RW can transition downward to an actuator ledge 55 of the outsole. This actuator ledge 55 can be sized and configured to project outwardly distance D3 from the rearward wall of the upper heel part 30 such that a user can engage the ledge with the force F1, optionally manually or with an opposing foot, to forcibly rotate the upper heel part 30 downward in direction R1 as shown in
As shown in
With further reference to
The first shank 60 optionally can include a first recess 61. This first recess 61 can be disposed above the portion of the rearward part 52 of the outsole 50 and generally above the second shank 70. The first recess 61 can extend laterally and transversely relative to the longitudinal axis LA of the first shank 60. The first recess 61 can be an indentation or rounded channel or groove that is reflected from the undersurface 60L through to the upper surface 60U of the first shank 60. The first recess 61 can be defined between opposing guide walls 65 that are disposed on opposite sides of longitudinal axis LA. The guide walls 65 can constrain movement of and guide there between a portion of the second shank 70 as it tilts, pivots or moves relative to the first shank as described below. The guide walls 65 can extend adjacent and forward of the heel opening 64. In some cases, the guide walls 65 can extend forward of the first recess 61 such that a depression or recess 66 is formed rearward of and forward of the first recess 61. This recess 66 optionally can include a forward part 66F within which a portion of the second shank, for example, an engagement rim 71, can be disposed when the footwear is in the closed mode as described below.
Optionally, the first shank 60 can extend rearward from the first recess 61 and the heel opening 64. A rearward part of the first shank can define a second recess 62 that extends laterally and transversely relative to the longitudinal axis LA. The second recess 62 can have a greater width W2 than the width W1 of the first recess 61. This recess 62 can be reflected upward and can be defined by a portion of the first shank 60 that extends upwardly above the upper surface 60U of the first shank 60. Of course, in cases where the first shank is a thicker piece of material or element, the first and second recesses 61 and 62 can be defined by the lower surface, without reflecting in the upper surface 60U of the first shank 60.
The first shank, as well as the second shank can be constructed from a rigid polymeric material and in some cases nylon, composites, metal and/or mixtures thereof. These components can be relatively stiff and can have a low elasticity.
Optionally, the midsole 40 can be configured to include a first shank recess 44 that accommodates the contours in shape of the first shank 60. As shown in
The second shank 70 can be disposed generally adjacent the first shank in the closed mode but can be configured to tilt, move, float, readjust or modify (all referred to as tilt) away from the first shank in transitioning from the closed mode to the open mode. The second shank 70 can include a forward extension 73 that transitions to an upwardly projecting wall or band 73 that can extend away from the forward extension 73 and then back toward it to connect to the forward extension at respective lateral first and second plates 75. The second shank 70 can include and define another heel opening 74 that can be aligned with the heel opening 64 of the first plate. In this manner, the heel button 42 of the midsole can project outwardly and move toward and/or through at least a portion of the opening 74 and the second shank when the footwear is in the closed mode.
The forward extension 73 can extend forwardly to an engagement rim 71. This engagement rim 71 can extend laterally across and transverse to the longitudinal axis LA. In some cases, the engagement rim 71 can be perpendicular to the longitudinal axis, as can be the first recess 61. Generally, the engagement rim and the first recess 61 can be aligned and parallel with one another in both the open mode and the closed mode. The engagement rim 71 can be configured to slide and move into and out from the first recess 61 in transitioning to or from the open mode. For example, as shown in
The second shank 70 also can be configured to tilt toward the first shank and transition to the closed mode. For example, as shown in
Optionally, as the heel part transitions to the closed mode, the engagement rim 71 can begin to decrease its depth or penetration into the first recess 61. In some cases, as shown in
As mentioned above, the first shank 60 can include a second recess 62 defined rearward of the first recess 61. The footwear can also include a wing chassis 80. The wing chassis can include a secondary projection or ridge 86. The projection or ridge can extend across the longitudinal axis LA. The projection can be selectively registrable in the second recess 62 of the first shank to impair longitudinal sliding of the second shank 70 relative to the first shank 60 in the closed mode, due to the second shank being secured to the wing chassis. In particular, the second shank can be impaired or prevented from sliding in a forward or rearward in directions F/R as indicated in
Optionally, the footwear 10 can be outfitted with a heel lock 82 to further lock or register the heel part 11 in a closed mode relative to the forefoot part 17. For example, as shown in
In some applications, the heel lock ridge 47 can be formed with the same material as the midsole 40, and can be a projection that is integral with the remainder of the midsole. Where the midsole 40 is constructed from a relatively low durometer material, the rear sidewall and/or the heel lock ridge can be covered or coated with a film or additional layer. For example, the heel lock ridge 47 can include a projection that extends outwardly from the body of the midsole, with a film or coating of TPU, PU, ESS or some other polymeric or composite material to make the heel lock ridge more rigid, durable and wear resistant. This material also can be of a greater durometer than the remainder of the midsole 40.
The heel lock ridge 47 can be configured to nest and fit into corresponding heel lock recess 77 that is defined by the second shank 70, and optionally the upstanding rearward wall or band 73 that extends around at least a portion of the heel of the footwear. As further shown in
The heel lock ridge and recess also can be configured to slide relative to one another. For example, as mentioned above, when a force F1 is applied to the ledge 55 or other component of the heel part 11, the sidewalls of the recess can slide relative to the surfaces of the ridge 47 until the ridge 47 exits the recess 77 to allow the rear of the footwear to transition to the open mode.
In some applications, the footwear can be configured to provide audible feedback indicating that the footwear is in a thoroughly locked closed mode, that is, the heel part and forefoot part are fully closed and engaged. In this closed mode, the footwear is ready for regular activity and use. To provide audible feedback, the heel lock ridge and heel lock recess can be configured to provide an audible snap, click, crack, pop or other sound (all referred to as an audible snap) when the ridge 47 adequately enters the recess 77. The audible snap also can be augmented optionally by contact between the lower surface 60L of the first shank and an upper surface 70U of the second shank slapping, contacting or engaging one another when the shanks are flattened and lay adjacent or against one another in the closed mode. It will be appreciated that the footwear 10 also can provide audible feedback, such as an audible snap, when the footwear is transitioned out of the closed mode to the open mode. The audible feedback indicating the closed mode or the open mode can be slightly different types or volumes of sound so that a user can distinguish between the respective modes.
As shown in the figures, the footwear 10 optionally can include a system of wings and pockets that provide functionality in the opened and/or closed modes of the footwear. For example, the upper heel part 30 can include wings 90, optionally including a first wing 91 on a lateral side L of the footwear and a second wing 92 on opposing medial side M of the footwear. These wings can be configured to fit within and move within the respective first 26 and second 27 pockets. The wings optionally can be configured to wrap toward and/or over a portion of the instep 13 of the footwear when it is in the closed mode. The wings generally assist in holding the heel part 11 in a fixed, close position relative to the forefoot part 17 of the footwear 10. The wings 91 and 92 can impair or prevent the overextension of the heel part 11 relative to the forefoot part 17 of the footwear 10 when the footwear is transitioned to the open mode shown in
Particularly, with reference to
Although mentioned as being included in the upper heel part 30, the wings 91 and 92 optionally can be formed as a portion of the outsole and/or a wing chassis 80 as shown in
The first and second wings can be similar in structure so only the first wing 91 will be described here. Generally, the first wing can extend upwardly and forwardly away from the rearward part 52 of the sole. The first wing 91 can extend and conform to a generally triangular shaped forward portion 91F that extends to a tip 91T. The tip can transition rearward toward the upper heel part along the edges 91A and 91B. These edges can form an angle A4. This angle A4 can be optionally an acute angle, further optionally between about 10° and about 89°, between about 20° and 70°, between about 30° and about 60°, or between about 30° and 45°, depending on the application. The wing 91 can be rigid and stiff and can be extended from the chassis 80 at a slightly outward extending offset angle A5 as shown in
The first 91 and second 92 wings can extend into and can be slidably received within the first pocket 26 and the second pocket 27 associated with the forefoot part 17. Each of the first and second wings optionally can project farther into the first and second pockets in the closed mode than in the open mode. For example, there can be more of the plate section 91P of the wing disposed in the pocket in the closed mode than in the open mode. In some cases, there can be optionally at least 10%, at least 20%, at least 30%, at least 40%, at least 50% or more of the plate 91P disposed pocket in the closed mode than in the open mode.
With reference to
The first pocket 26 can include an upper wall 26UW that generally extends toward the collar 23 of the upper forefoot part 21 as shown in
Optionally, the upper wall 26UW of the pocket 26 can transition to the forward wall 26FW that is forward of the rear wall and optionally parallel to the rearward wall 26RW. That forward wall 26FW can be positioned and oriented such that the wing 91 can engage the forward wall 26FW when the heel part 11 is adequately in the closed mode and the optional heel lock 82 is engaged. In some applications, the forward edge 91B of the wing plate 91P can engage that forward wall in the closed mode. In other cases, the tip 91T can engage that forward wall or a portion of the upper wall 26UW of the pocket in the closed mode. Of course, where the wing 91 is a different shape than that shown, the pocket can include walls that are oriented differently relative to one another and of different shapes and sizes.
As shown in
Each of the second ends of the first and second wings can curve inward toward one another, over a portion of the instep 13. Due to the extension or inward curving of these ends and the wings toward one another, the wings can cooperatively secure the footwear in the closed mode, clamping over and down on the instep in some cases. This closure function of the wings can supplement the heel lock features mentioned above. Of course, in other applications, the wings 91 and 92 can extend generally parallel to the upper surfaces of the upper without extending or curving inward toward the longitudinal axis LA thereof.
A second alternative embodiment is shown in
The footwear 10 shown in
The second subpart recess 144B can be configured to receive at least a part of the second shank 170, which as described below, can be movably, pivotally and/or hingedly joined with the first shank 160 in this embodiment. The midsole 140 optionally can include a midsole heel cup 146 extending around a rear of the midsole. The midsole heel cup 146 can extend around the rear of the heel region 16 of the midsole. The midsole heel cup 146 can be constructed from a plastic or polymeric material such as TPU, polyamide 6,6, polyethylene, polypropylene, or some other relatively rigid or sturdy polymer. The midsole heel cup in this construction can itself include the least one heel lock ridge 147 that projects outwardly from the remainder of the rear sidewall of the midsole heel cup 146. This heel lock ridge 147 can be of a variety of contours. For example as shown, the heel lock ridge can be optionally rounded, partially semicircular, angled, triangular, polygonal or of other shapes that extend outwardly from the rear sidewall. The heel lock ridge 147 can also project about the rear sidewall of the midsole at an angle that traverses the longitudinal axis, where that angle can be equal to the angle A2 described in the embodiment above. The heel lock ridge 147 can be configured to nest and fit into corresponding heel lock recess 177 that is defined by the second shank 170, and optionally the upstanding rearward wall 186RW that extends around at least a portion of the heel of the footwear as shown in
The heel lock ridge 147 and recess 177 can be configured to slide relative to one another, similar to the embodiment above. For example, as mentioned above, when a force Flt is applied to the ledge 155 or other component of the heel part 111, the sidewalls of the recess can slide relative to the surfaces of the ridge 147 until the ridge 147 exits the recess 177 to allow the rear of the footwear to transition to the open mode. As with the embodiment above, in some applications, the footwear can be configured to provide audible feedback indicating that the footwear is in a thoroughly locked closed mode, that is, the heel part and forefoot part are fully closed and engaged. In this closed mode, the footwear is ready for regular activity and use. To provide audible feedback, the heel lock ridge and heel lock recess can be configured to provide an audible snap as described in connection with the embodiment above.
Optionally, the midsole heel cup 146 can include one or more recesses 143 similar to the second recess noted in the embodiment above. This second recess 143 can receive a projection or ridge 173 of the second shank and its associated shank heel cup 176 to prevent relative forward and rearward movement or sliding of the second shank relative to the heel cup and/or midsole 140 when the footwear is in the closed mode. This construction, of course, can be reversed in some applications.
The footwear 10 shown in
The wing chassis 180 in this embodiment can be secured to the second shank 170. In particular, as shown in
As mentioned above, the second shank 170 can include an associated shank heel cup 176. The shank heel cup 176 can project rearwardly and can include a rearward wall 176RW extending around a rear portion of the shank 170. This rear wall can transition to a bottom wall 176B that extends underfoot and in particular, under the heel of a wearer when the footwear is worn. Although not shown, the bottom wall 176B optionally can include or define a hole or an aperture centered on a longitudinal axis LA of the footwear or components thereof. The bottom wall 176B can be in the form of a plate that extends under the heel and forwardly toward the arch region. The bottom wall 176B can transition to a connector plate 172 of the shank 170. The connector plate 172 can have a width CP that is less than a width HPW of the second shank 170 at the greatest dimension of the second shank. The connector plate 172 can extend forward to an engagement rim 171. This engagement rim 171 can be similar to the engagement rim 71 described in the embodiment above, and can interact and engage the first recess 161 of the first shank 160, similar to the embodiment above. The engagement rim 171 in this construction also includes a tip 171T which can be rounded, angled or of another contour. As shown in
In transitioning from the closed mode in
The first shank 160 and second shank 170 in this embodiment, shown in
As illustrated in
Further optionally, the arms 164 and 165 can include fingers 164F and 165F that include the respective projections 164P and 165P. These fingers can be resilient and slightly bendable such that the pins can be slid into the apertures via the slots associated with the same. For example, the first pin 174A can be slid into the entry of the slot 165S in direction R2. As it continues in that slot it can eventually be pressed past the projection 165P. In so doing, the finger 165F can bend or flex slightly to increase the width WS of the slot such that the pin 174A can move past the projection and slip into the aperture 164A. When this occurs, the finger 165F can return to its prior unbent position to effectively trap the pin in the respective aperture.
In operation, for example, when the footwear transitions from a closed mode to an open mode, the pins 174A and 174B can rotate about the axis PA within the respective apertures 165A and 164A. As they do so, the engagement rim 171 can engage and/or disengage certain portions of the first recess 161 of the first shank until the prescribed orientation and configuration of the footwear in the open or closed mode is attained.
Although not shown, the axle 174 can come in a different form. For example, the connector plate 172 can define a through hole from one side to the other. The arms 164, 165 can include simple apertures without any connecting slots. A rod, constructed from plastic, metal and/or a composite, can be placed through the apertures and the through hole, extending from one arm to the other. The through hole can be slightly larger than the dimension of the rod such that the second shank 170 can rotate relative to the rod or axle, similar to the action provided by the pins in the embodiment shown in
With reference to
Optionally, as also illustrated in
Further optionally, the outsole 150 can include a lateral and medial wings 156A and 156B. These wings can extend upwardly from the outsole near the flex or transition region 154 as shown in
As mentioned above, the embodiment illustrated in
The following additional statements about other current embodiments are provided, the lettering of which is not to be construed as designating levels of importance.
Statement A. Footwear is provided comprising an upper forefoot part, an upper heel part, an outsole including a forward part joined with the forefoot part and a rearward part joined with the heel part; wherein the rearward part is selectively moveable in unison with the heel part from a closed mode secured to a wearer's foot, to an open mode with the footwear open to don or doff the footwear.
Statement B. The footwear of statement A comprising: a first wing extending upward from the outsole on a medial side of the footwear and a second wing extending upward from the outsole on the lateral side of the footwear.
Statement C. The footwear of statement A or B, wherein the first wing and second wing register within respective first and second pockets joined with the upper forefoot part.
Statement D. The footwear of any preceding statement, wherein the first and second wings arch inwardly toward a longitudinal axis of the footwear in the closed mode, to assist in securing the footwear to a wearer's foot.
Statement E. The footwear of any preceding statement, wherein the first wing and second wing are rigidly secured to a rearward part of the outsole, and extend upward, and forward of the upper heel part, so that the first and second wings overlap respective first and second sides of the upper forefoot part.
Statement F. The footwear of any preceding statement, wherein the upper forefoot part includes a lateral pocket and a medial pocket, with the respective first wing and second wing slidably disposed in the lateral pocket and the medial pocket.
Statement G. The footwear of any preceding statement, wherein the first wing interferes with the first pocket in transitioning to the open mode to impair further opening of the upper heel part relative to the upper forefoot part.
Statement H. The footwear of any preceding statement, wherein the first wing includes an upper edge and the first pocket includes an inside upper perimeter, wherein the upper edge engages the inside upper perimeter to cease further opening of the upper heel part relative to the upper forefoot part.
Statement I. The footwear of any preceding statement, wherein the first wing and the second wing each curve inward toward one another over a portion of an instep of the upper to cooperatively secure the footwear in the closed mode.
Statement J. The footwear of any preceding statement, wherein the first wing includes a first end and a second end, the first end secured to the rearward heel part, the second end extending in the first pocket, wherein the second end extends inwardly toward a longitudinal axis of the upper, wherein the second end is closer to the longitudinal axis than the first end.
Statement K. The footwear of any preceding statement, wherein the second wing includes a first end and a second end, the first end of the second wing secured to the rearward heel part, the second end extending in the second pocket, wherein the second end of the second wing extends inwardly toward the longitudinal axis of the upper and toward the second end of the first wing, wherein the second end of the second wing is closer to the longitudinal axis than the first end of the second wing.
Statement L. The footwear of any preceding statement, comprising a wing chassis, wherein a first wing and a second wing project upwardly and away from the wing chassis on opposite sides of the longitudinal axis, wherein the wing chassis includes a base plate connecting the first and second wings.
Directional terms, such as “vertical,” “horizontal,” “top,” “bottom,” “upper,” “lower,” “inner,” “inwardly,” “outer” and “outwardly,” are used to assist in describing the invention based on the orientation of the embodiments shown in the illustrations. The use of directional terms should not be interpreted to limit the invention to any specific orientation(s).
In addition, when a component, part or layer is referred to as being “joined with,” “on,” “engaged with,” “adhered to,” “secured to,” or “coupled to” another component, part or layer, it may be directly joined with, on, engaged with, adhered to, secured to, or coupled to the other component, part or layer, or any number of intervening components, parts or layers may be present. In contrast, when an element is referred to as being “directly joined with,” “directly on,” “directly engaged with,” “directly adhered to,” “directly secured to,” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between components, layers and parts should be interpreted in a like manner, such as “adjacent” versus “directly adjacent” and similar words. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
The above description is that of current embodiments of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. This disclosure is presented for illustrative purposes and should not be interpreted as an exhaustive description of all embodiments of the invention or to limit the scope of the claims to the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any individual element(s) of the described invention may be replaced by alternative elements that provide substantially similar functionality or otherwise provide adequate operation. This includes, for example, presently known alternative elements, such as those that might be currently known to one skilled in the art, and alternative elements that may be developed in the future, such as those that one skilled in the art might, upon development, recognize as an alternative. Further, the disclosed embodiments include a plurality of features that are described in concert and that might cooperatively provide a collection of benefits. The present invention is not limited to only those embodiments that include all of these features or that provide all of the stated benefits, except to the extent otherwise expressly set forth in the issued claims. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular. Any reference to claim elements as “at least one of X, Y and Z” is meant to include any one of X, Y or Z individually, any combination of X, Y and Z, for example, X, Y, Z; X, Y; X, Z; Y, Z, and/or any other possible combination together or alone of those elements, noting that the same is open ended and can include other elements.
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| 63242567 | Sep 2021 | US |
