The present disclosure relates to sandals, also known as slides, and more specifically to sandals or slides with removable foot covers.
Shoes have been in use for thousands of years to protect the human foot from the ground, to keep the foot warm, dry, or otherwise protected from the elements. Shoe designers, including designers of sandals or slides, continually look for ways to enhance the appeal of shoes to consumers from a functional and/or aesthetic perspective. However, available sandals or slides, have significant shortcomings. First, most sandals have foot covers that are permanently attached to the base. Such permanent attachment prevents interchanging designs or images on the foot cover. Moreover, when the foot cover wears down, it cannot be replaced, and the whole sandal must be discarded. Most sandals that do include custom designs or images on the foot covers are expensive, preventing consumers from being able to purchase many different pair of sandals. Moreover, the available sandals or slides, that do include interchangeable foot covers are difficult to use, as they typically either contain many different components and are thus difficult to assemble or are susceptible to breaking.
Also, applying increased force to the foot cover of available sandals usually causes the connection between the foot cover and base to fail. Additionally, with other available interchangeable foot covers, achieving a comfortable fit is difficult, and the cover often is not sufficiently secure when assembled. Moreover, manufacturing available interchangeable foot covers is expensive and time consuming. Therefore, there is a need for a sandal or slide that allows interchangeable footcovers with unique designs or images that is inexpensive and easy to assemble, as well as having a comfortable fit and a strong connection between the foot cover and base.
Being able to interchange foot covers, and thus avoid the purchase of multiple pairs of slides, provides the consumer with many different unique designs at much less expense than if he needed to buy slides without interchangeable foot covers. Additional expense is saved by being able to replace only the foot covers. Foot covers are typically the first portion of the sandal to wear down. Therefore, by replacing the foot cover, the base can still be used.
Moreover, the present disclosure provides an easy-to-use assembly method. The present sandal features a base with laterally projecting pins that engage, and are secured within, receptacles proximate terminal edges of the corresponding foot covers. By placing the pins within an inlet of the receptacles, sliding the pins downward to a bottom of the receptacle and sliding the pins toward an end of a protrusion within the bottom of the receptacle, the sandal is completely assembled. The present disclosure provides an interchangeable foot cover that is easy to assemble and has a strong connection. When the pin is engaged with the end of the protrusion, at least half of the pin is in contact with the receptacle. Further, both the top and bottom portions of the pin contact the receptacle.
One issue with available interchangeable foot covers is that the piece of the foot cover connector which receives the pin does not have sufficient contact with the pin when the sandal is assembled. As a result, when the sandal strikes the ground with each step, the pin slides upward and become disengaged with the receiving portion, causing the sandal to disassemble while being worn.
Moreover, with available interchangeable foot covers, the only portion of the pin which contacts the receiving portion is the head of the pin. In other words, the shaft does not contact the receiving portion since it is difficult to ensure that the width of the receiving portion precisely matches the width of the shaft. Therefore, the width of the receiving portion of available interchangeable foot covers typically is larger than the diameter of the shaft. This results in a less secure connection.
The present method also facilitates a secure connection by having the pin press against the end of the protrusion. Since the top and bottom portions of the pin contact the receptacle, a downward force applied to the base does not disengage the pin from the receptacle. Moreover, the foot of the wearer applies a force to the present interchangeable cover in an opposite direction to the direction which the pin slides within the protrusion. In other words, the protrusion extends from the front of the sandal toward the back of the sandal; whereas, the foot of the wearer applies a force to the foot cover toward the front of the sandal. Therefore, the only surface where there is no engagement between the pin and the receptacle is the direction where no force is exerted on the pin when the sandal is assembled. Accordingly, as the pin presses against the end of the protrusion, the connection is made more secure, facilitating a more reliable connection, while preventing the connection from breaking and potentially injuring the wearer.
Further, since the pin is engaged with the end of the protrusion, the dimension of the protrusion does not need to be as precise as with available interchangeable foot covers while still achieving a secure connection.
Furthermore, the present sandal or slide requires few components, so it is relatively simple and inexpensive to manufacture. Additionally, finding a comfortable fit is facilitated by being able to use different foot covers. The consumer optionally tries different size foot covers until he or she finds the size that best matches his or her feet, improving wearer comfort.
These, as well as other aspects, advantages, and alternatives, will become apparent to those of ordinary skill in the art by reading the following detailed description, with reference, where appropriate, to the accompanying drawings.
The present disclosure includes a sandal or slide with a base. The base includes a top surface upon which a human foot rests, and first and second opposed side surfaces, the first and second opposed side surfaces each having at least one pin. The sandal also has a foot cover, which is selectively detachable from the base, that includes a planar surface with a first terminal edge and a second terminal edge, and at least one receptacle defined proximate the first and second terminal edges. Each of the at least one receptacle includes an inlet, a neck connected to the inlet, and a bottom connected to the neck, such that the bottom has a protrusion, and the at least one pin engages with an end of the protrusion when the sandal is assembled.
In a preferred embodiment, the at least one pin includes a head, a shaft with a diameter smaller than a diameter of the head, and a neck connecting the shaft to the head, wherein the neck is chamfered at an angle δ with respect to the first or second opposed side surfaces.
In another preferred embodiment, the first and second opposed side surfaces each have a base connector piece, where the base connector piece includes a plate, and a pair of the pins which are attached to, or integral with, the plate. Preferably, an interface between the shaft and the plate includes a fillet.
In yet another preferred embodiment, a width of the inlet is greater than a width of the neck but less than a width of the bottom. Preferably, the inlet, the neck, and the bottom form an L-shape such that the protrusion extends in one direction beyond the neck. Preferably, the protrusion extends perpendicularly to an inlet direction of the at least one pin, and a length of the protrusion is greater than a diameter of the head.
In another preferred embodiment, the receptacle forms a cavity for receiving the corresponding pin, where the cavity includes a top wall, angled side walls connected to the top wall, and an edge surface. Preferably, the angled side walls form an angle λ with respect to the edge surface. In another preferred embodiment, the angle λ is equal to the angle δ, such that the neck is flush with the angled side walls when the sandal is assembled. Preferably, the angled side walls include a vertical segment that is perpendicular to the edge surface. Preferably still, the edge surface engages a surface of the plate with the pair of one pins.
In yet another preferred embodiment, the at least one receptacle is located on a cover connector piece, where the cover connector piece includes a top half which includes the top wall; and a bottom half which includes the angled side walls and the edge surface, such that the top half and the bottom half are permanently affixed to one another.
In another preferred embodiment, the at least one receptacle is located on a cover connector piece, where the cover connector piece includes a pair of the receptacles for receiving a corresponding pair of the pins of the base. Preferably, the pair of receptacles are spaced an equivalent distance from either the first terminal edge or the second terminal edge. Preferably still, the cover connector piece also includes a recessed portion between the pair of receptacles, such that the recessed surface is recessed in relation to the edge surface.
Another embodiment of the present disclosure includes a selectively detachable foot cover for sandals. The selectively detachable foot cover includes a planar surface with a first terminal edge and a second terminal edge, and at least one receptacle defined proximate each of the first and second terminal edges. The at least one receptacle includes an inlet, a neck connected to the inlet, and a bottom connected to the neck. Preferably, the bottom has a protrusion, such that a corresponding pin engages with an end of the protrusion.
In a preferred embodiment, a width of the inlet is greater than a width of the neck but less than a width of the bottom, such that the inlet, the neck, and the bottom form an L-shape where the protrusion extends in one direction beyond the neck. Preferably, the protrusion extends perpendicularly to an inlet direction of the corresponding pin, and a length of the protrusion is greater than a diameter of a head of the corresponding pin.
In another preferred embodiment, the corresponding pin includes, a head, a shaft with a smaller diameter than the head, and a neck connecting the shaft to the head, such that the neck is chamfered at an angle δ with respect to a top surface of the head.
In yet another preferred embodiment, the receptacle forms a cavity for receiving the corresponding pin, such that the cavity includes a top wall, angled side walls connected to the top wall, and an edge surface. Preferably, the angled side walls form an angle λ with respect to the edge surface. Preferably still, the angle λ is equal to the angle δ, such that the neck is flush with the angled side walls when the selectively detachable foot cover is assembled on a sandal. Preferably, the angled side walls include a vertical segment that is perpendicular to the edge surface.
In yet another preferred embodiment, the at least one receptacle is located on a cover connector piece, and the cover connector piece includes a top half which with the top wall, and a bottom half which includes the angled side walls and the edge surface. Preferably, the top half and the bottom half are permanently affixed to one another.
In another preferred embodiment, the at least one receptacle is located on a cover connector piece, and the cover connector piece includes a pair of the receptacles for receiving a corresponding pair of the pins. Preferably, the pair of receptacles are spaced an equivalent distance from either the first terminal edge or the second terminal edge. Preferably still, the cover connector piece includes a recessed portion between the pair of receptacles, such that the recessed surface is recessed in relation to the edge surface.
Referring to
As displayed in
Additionally, the first and second opposed side surfaces 18, 20 each include at least one pin 32, and in a particular embodiment, a pair of pins 32.
Referring to
As shown in
Referring to
Referring to
In a preferred embodiment, the recessed surface 49 includes a label which includes letters indicating the location of the cover connector piece 36, 38. For example, if the cover connector piece 36, 38 is located on the outside of the left cover 14, the recessed surface 49 optionally includes letters “L” and “O” for left and outside. These labels are optionally stickers applied to the recessed surface 49. Alternatively, the labels are formed by indentations in the recessed surface 49. However, alternate labels are contemplated as is known in the art.
Further, the cover connector piece 38 optionally includes a lip 50 which is secured to the second terminal edge 26. The optional lip 50 provides an additional surface for securing the cover connector piece 38 to the cover 14. Referring to
Referring now to
In a preferred embodiment, the angle λ is equal to the angle δ, such that the neck 58 is flush with the angled side walls 48 when the sandal 10 is assembled. Further, in a preferred embodiment, the length L of the protrusion 47 is greater than the diameter of the head 54. Preferably, the interface between the shaft 56 and the plate 52 includes a fillet, and the top edge of the head 54 is rounded.
Moreover, a height of the pin 32 above the plate 52 is preferably less than a distance between the edge surface 41 and the top wall 51, such that there is a space between the top of the head 54 and the top wall.
Referring to
Preferably, the cover 14 includes a cushioning layer and/or an image layer, such that the cushioning layer includes the lower planar surface 23, and the image layer includes the upper planar surface 22. The cover connector pieces 36, 38, and the base connector pieces 28, 30 are preferably made of hard plastic, epoxy resin, or other suitable material known to those in the art. Further, the cushioning layer is preferably made of a durable, flexible material. Finally, the image layer is made of a material, such as but not limited to, synthetic paper with laser printing or sublimation on sublimation compatible materials, to allow unique designs and logos to be transferred onto the top of the foot cover 14. Contemplated are other materials and methods for creating the foot cover 14 as are known in the art. Also contemplated is a transparent foot cover which has no image layer and has only a transparent cushioning layer.
In an example embodiment, the cover connector pieces 36, 38 which are proximate the terminal edges 24, 26, are attached to the lower planar surface 23. Various forms of attachment, such as use of adhesive, are contemplated as are known in the art.
It should be understood that variations on the illustrated sandal 10 are possible. For example, the sandal 10 may take on various sizes and/or shapes, and be constructed from various materials, depending upon the implementation. The sandal is configured for wear on a left foot, and is part of a pair that includes a sandal (not shown) that is a mirror image of sandal 10 and is configured for wear on a right foot.
Numerous modifications will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use what is herein disclosed and to teach the best mode of carrying out same. The exclusive rights to all modifications which come within the scope of this disclosure are reserved.