US20140310992A1 - Foldable footwear - Google Patents
Foldable footwear Download PDFInfo
- Publication number
- US20140310992A1 US20140310992A1 US14/320,417 US201414320417A US2014310992A1 US 20140310992 A1 US20140310992 A1 US 20140310992A1 US 201414320417 A US201414320417 A US 201414320417A US 2014310992 A1 US2014310992 A1 US 2014310992A1
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- United States
- Prior art keywords
- sole
- footwear
- foldable
- groove
- back portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/12—Sandals; Strap guides thereon
- A43B3/128—Sandals; Strap guides thereon characterised by the sole
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
- A43B3/108—Low shoes, e.g. comprising only a front strap; Slippers characterised by the sole
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/24—Collapsible or convertible
- A43B3/246—Collapsible or convertible characterised by the sole
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/24—Collapsible or convertible
- A43B3/248—Collapsible, e.g. foldable for travelling
Definitions
- the present invention relates to the field of footwear in general. More particularly, the invention relates to foldable shoes.
- a footwear such as a shoe includes a sole and an upper part that hold the footwear onto the foot.
- the sole includes a ground-side, which is the layer in contact with the ground when the footwear is worn, and a foot-side, which is the layer in contact with the foot of the user when the footwear is worn.
- a foldable footwear is a footwear which, upon not wearing allows folding thereof for carrying or packaging purposes.
- the present invention thus relates to a foldable footwear comprising:
- a. a sole fabricated using a single manufacturing casting, the sole having a ground side which touches the ground when the footwear is worn and a foot side which touches the user's foot when the footwear is worn, the sole comprising at least two portions, a front portion and a back portion;
- a connecting element (strap etc.) attached to the front portion in at least one location and attached to the back portion in at least two locations, one on the lateral side of the sole and the other on the medial side of the sole, wherein said connecting element is designed to hold the footside of the back portion of the sole against the wearer's foot;
- said footwear can be folded in one direction only where the ground side of the front portion is folded towards the ground side of the back portion such that the groove's front portion edge touches the groove's back portion edge.
- the groove is substantially cylindrical.
- the at least one groove's maximal height is 0.2 to 0.9 the thickness of the sole.
- the thickness of the groove is 2.3 or 2.4 or 2.5 cm.
- the sole has a minimum width of 0.5 cm and a maximum width of 2.5 cm. In some embodiments, the sole has a minimum width of 0.5 cm and a maximum width of 2.2 or 2.3 or 2.4 cm.
- the at least one groove is positioned substantially in the middle of the sole.
- the foldable footwear further comprises a strap attached on one side to the front portion and on the other side attached to the back portion, wherein the strap is stretched when the footwear is worn thus helping to keep the sole unfolded.
- the foldable footwear further comprises a plurality of notches on the foot side of the sole, substantially positioned above said at least one groove, said notches forming a plurality of adjacent bands, wherein the each band's width on the foot side (A2) is larger than the width of the bottom of its adjacent notches (A1) such that said bands are drawn away from each other upon folding said footwear in the direction where the ground side of the front portion is moved towards the ground side of the back portion, and said bands are drawn closer to each other when the footwear is unfolded, said bands effectively preventing the footwear from being folded in the direction where the foot side of the front portion is folded towards the foot side of the back portion since the bands will eventually touch each other.
- the footwear is a flip-flop sandal.
- the sole of said flip-flop sandal is made from a flexible material comprising rubber or polyurethane.
- FIG. 1 depicts a foldable footwear at the deployed state, according to one embodiment of the present invention.
- FIG. 2 depicts the foldable footwear of FIG. 1 at the folded state.
- FIG. 3 is a side view of the foldable footwear of FIG. 1 at the folded state, focusing at the foldable structure.
- FIG. 5 is a side view of the foldable structure of the foldable footwear of FIG. 1 at the deployed state.
- FIG. 6 is a side view of the foldable structure of a foldable footwear of FIG. 1 according to another embodiment.
- FIG. 7 is a side view of the foldable structure of a foldable footwear of FIG. 1 according to another embodiment.
- FIG. 8 is a side view of the foldable structure of a foldable footwear of FIG. 1 according to another embodiment.
- FIG. 9A is a side view of a foldable footwear in an open position according to another embodiment.
- FIG. 9B is enlargement of the groove 18 area of FIG. 9A .
- FIG. 10 is a side view of a foldable footwear in a folded position.
- FIG. 12 is a side view of a foldable footwear in a half folded position.
- FIG. 14 is a bottom view of a foldable footwear in an open position.
- FIG. 1 depicts a foldable footwear 10 at the deployed state, according to one embodiment of the present invention.
- the foldable footwear's 10 sole 26 comprises at least two portions, a relatively rigid front portion 12 A, a relatively rigid back portion 12 B. At least one relatively foldable structure 32 A comprising a groove 18 in the ground side of the sole 26 separates the front portion 12 A from the back portion 12 B and extends laterally from one side of the sole 26 to the other side of the sole 26 .
- the sole-portions 12 A and 12 B and also the foldable structure 32 A are all produced together as a single casting of a flexible material, such as hard rubber, polyurethane, or other similar materials.
- foot-side refers to the side of the sole 26 which is in contact with the foot of the user when a footwear 10 is worn.
- ground-side refers to the side of the sole 26 which is in contact with the ground when a footwear 10 is worn.
- Footwear 10 is foldable in one direction only, which is the direction depicted by arrows 44 . Namely, foldable footwear 10 is folded so that the ground side 34 A of the front portion 12 A is folded towards the ground side 34 B of the back portion 12 B. When the footwear 10 is folded over the groove 18 , the front portion edge of the groove 18 touches the back portion edge of the groove 18 .
- the weight of the user's foot on the groove 32 A prevents folding the footwear 10 in the direction of arrows 44 while being worn.
- Stretchable straps 14 may attach footwear 10 to the foot of the user, and are stretched upon folding footwear 10 . When the user wears the footwear 10 , the stretchable straps 14 help in keeping the footwear 10 unfolded.
- a stretchable strap 20 can be pivotally connected to sole-portions 12 A or 12 B, in order to retain the footwear 10 in a folded state. Strap 20 may be rotated by inserting a finger into a depression 22 . A person skilled in the art will easily be able to use many available alternatives in order to incorporate alternative solutions in order to maintain the footwear 10 in a folded state.
- the foldable footwear 10 further comprises a plurality of notches on the foot-side of the sole 26 , substantially positioned above the groove 18 , the notches forming a plurality of adjacent bands 16 .
- the bands 16 are drawn away from each other upon folding the footwear 10 in the direction of arrow 44 , and the bands 16 are drawn closer to each other when the footwear 10 is unfolded.
- the bands 16 help to prevent the footwear 10 from being folded in the direction contrary to arrow 44 since the bands 16 will eventually touch each other.
- FIG. 2 depicts the foldable footwear 10 of FIG. 1 at the folded state, wherein the back portion 12 B is shown on top of the front portion 12 A.
- Foldable structure 32 A may include a foldable layer 42 (shown in FIG. 3 ), which is connected to both sole-portions 12 A and 12 B.
- a plurality of transverse parallel adjacent bands 16 extend from the foldable layer 42 towards the foot-side of footwear 10 . Upon folding footwear 10 , bands 16 are drawn away one from the other; upon deploying footwear 10 , bands 16 approach one another.
- Pivots 24 connect the stretchable strap 20 to sole-portions 12 A or 12 B.
- FIG. 3 is a side view of the foldable footwear 10 of FIG. 1 at the folded state, focusing on the foldable structure 32 A.
- Each of the transverse bands 16 may widen along the extending direction, i.e., the width A2 at the end of band 16 is wider than the width A1 of band 16 touching the foldable layer 42 .
- a transverse depression (groove) 18 at the ground-side of foldable structure 32 A prevents rejection forces between sole-portions 12 A and 12 B upon the folding.
- the flexible (foldable) layer 42 can assist in preventing the footwear 10 from folding in the direction opposing the single folding direction 44 by designing widening (from A1 to A2) such that each of the bands 16 has a narrower base touching the flexible layer 42 and a wider upper part A2 thereby providing mutual pressure between the adjacent bands 16 upon deployment of the footwear 10 and preventing the footwear from folding in the direction contrary to arrow 44 .
- FIG. 4 is a side view of the foldable structure 32 A of the foldable footwear 10 of FIG. 1 at an intermediate state between the folded state of FIG. 3 and the deployed state.
- FIG. 5 is a side view of the foldable structure 32 A of the foldable footwear 10 of FIG. 1 at the deployed state.
- This pressure between sides 40 of adjacent bands 16 prevents folding footwear 10 to the direction opposite to arrows 44 .
- FIG. 6 is a side view of the foldable structure 32 A of a foldable footwear 10 according to another embodiment.
- Footwear 10 may include more than one foldable structure 32 A. According to the example of FIG. 6 , footwear 10 may be folded to three pieces, as footwear 10 includes two consequent sole-portions pairs.
- the first sole-portions pair includes sole-portion 12 A and sole-portion 12 B
- the second sole-portions pair includes sole-portion 12 B and sole-portion 12 C.
- the first sole-portions pair is foldable by foldable structure 32 A
- the second sole-portions pair is foldable by foldable structure 32 B.
- FIG. 7 is a side view of the foldable structure of a foldable footwear 10 according to another embodiment.
- footwear 10 may be folded to five pieces.
- Sole-portion 12 A and sole-portion 12 B are foldable by foldable structure 32 A in between them;
- sole-portion 12 B and sole-portion 12 C are foldable by foldable structure 32 C in between them;
- sole-portion 12 C and sole-portion 12 D are foldable by foldable structure 32 C in between them;
- sole-portion 12 D and sole-portion 12 E are foldable by foldable structure 32 D in between them;
- sole-portion 12 E and sole-portion 12 F are foldable by foldable structure 32 E in between them;
- sole-portion 12 F and sole-portion 12 G are foldable by foldable structure 32 F in between them.
- FIG. 8 is a side view of the foldable footwear of FIG. 1 at the folded state, according to another embodiment.
- each of transverse bands 16 is parallel along the extending direction, thus the width of each band 16 is of a constant value, giving the bands 16 a substantially rectangular form.
- the foldable sole 26 may comprise a series of sole-portions ( 32 A, 32 B, 32 C, etc.), each for providing a single-directional folding to consequent sole-portion pairs ( 32 A for 12 A and 12 B, 32 B for 12 B and 12 C, etc.).
- the present invention further relates to a foldable footwear comprising:
- a sole fabricated using a single manufacturing casting, the sole having a ground side which touches the ground when the footwear is worn and a foot side which touches the user's foot when the footwear is worn, the sole comprising at least two portions, a front portion and a back portion, the sole having a minimum width of 0.5 centimeters (cm) and a maximum width 2.5 cm; and
- a connecting element (strap etc.) attached to the front portion in at least one location and attached to the back portion in at least two locations, one on the lateral side of the sole and the other on the medial side of the sole, wherein said connecting element is designed to hold the footside of the back portion of the sole against the wearer's foot;
- said footwear can be folded in one direction only where the ground side of the front portion is folded towards the ground side of the back portion such that the groove's front portion edge touches the groove's back portion edge.
- the connecting element is designed to stretch when the footwear is worn, thus helping to keep the footwear unfolded.
- FIG. 9A shows an embodiment of such footwear, in the form of a flip-flop with a strap.
- SW denotes the sole thickness.
- the sole thickness should be between 0.5 cm and 2.2 cm, as to if the sole is too thin it will not be comfortable for the user and might also tear more easily.
- a sole that is thicker than 2.5 cm will not be very practical to use as it might be cumbersome to fold and store, and might not feel very comfortable to wear.
- FIG. 9B is enlargement of the groove 18 area of FIG. 9A and showing the groove width GW.
- the groove width should be no less than 0.9 cm and no more than 2.2 cm.
- a groove that is narrower than 0.9 cm will not fold easily to a completely flat position where the front portion 12 A and the back portion 12 B are parallel to each other and the groove's 18 front portion edge touches the groove's 18 back portion edge.
- a groove 18 that is larger than 2.2 cm will not comfortable for walking, because the user might feel the large groove 18 in the sole.
- FIG. 10 is a side view of the foldable footwear in a folded position, showing the front portion 12 A and the back portion 12 B essentially parallel to each other and the groove's 18 front portion edge touching the groove's 18 back portion edge.
- FIG. 11 is a closeup view of a foldable footwear in a folded position, showing the front portion 12 A and the back portion 12 B essentially parallel to each other and the groove's 18 front portion edge touching the groove's 18 back portion edge.
- FIG. 12 is a side view of a foldable footwear in a half folded position, showing how the flip-flop can only fold in one direction 44 .
- FIG. 13 is a top view of a foldable footwear in an open position.
- FIG. 14 is a bottom view of a foldable footwear in an open position showing the groove's 18 width GW.
- numeral 10 denotes a footwear or a shoe according to an embodiment of the present invention
- numerals 12 A, 12 B, 12 C, 12 D, 12 E and 12 F denote sole-portions of the footwear 10 ;
- numeral 14 denotes a stretchable strap, for attaching the user's foot to the footwear 10 ;
- numeral 16 denotes a band from a plurality of adjacent bands for preventing the footwear 10 from folding in the direction contrary to arrow 44 ;
- numeral 18 denotes a groove (depression), for allowing folding
- numeral 20 denotes a stretchable strap for retaining the folded state of the footwear 10 ;
- numeral 22 denotes a depression for inserting a finger in order to manipulate the stretchable strap 20 ;
- numeral 24 denotes a pivot for attaching the stretchable strap 20 to the footwear 10
- numeral 26 denotes a foldable sole
- numerals 32 A, 32 B, 32 C, 32 D, 32 E denote foldable structures, each allowing folding a pair of sole-portions;
- numerals 34 A and 34 B denote the sides of the sole 26 which touch the ground during wearing;
- numeral 38 denotes an edge of a band 16 ;
- numeral 40 denotes a side surface of a band 16 ;
- numeral 42 denotes a foldable layer which is attached to both sole-portions 12 A and 12 B; preferably the foldable layer 42 and the soles-portions 12 A and 12 B are inherent elements, fabricated in a single casting; and
- numeral 44 denotes the single folding direction enabled by the footwear 10 of the invention.
Abstract
A foldable footwear comprising a sole fabricated using a single manufacturing casting, the sole comprising at least two portions, a front portion and a back portion and a groove in the ground side of the sole extending laterally from one side of the sole to the other side of the sole. The footwear can be folded in one direction only where the ground side of the sole is folded into itself.
Description
- This application is a continuation-in-part of U.S. patent application Ser. No. 13/098,533 filed on May 2, 2011 and claims priority to Israeli Patent Application 205479 filed on May 2, 2010. The entire teachings of these applications are incorporated by reference herein.
- The present invention relates to the field of footwear in general. More particularly, the invention relates to foldable shoes.
- A footwear, such as a shoe includes a sole and an upper part that hold the footwear onto the foot. The sole includes a ground-side, which is the layer in contact with the ground when the footwear is worn, and a foot-side, which is the layer in contact with the foot of the user when the footwear is worn.
- A foldable footwear is a footwear which, upon not wearing allows folding thereof for carrying or packaging purposes.
- Many women wear high-heel shoes on many occasions in order to be fashionable, however many of these shoes are not comfortable to wear for many hours and as a result, women may wish to change to more comfortable shoes, for example, when going back home.
- There is thus a need to provide foldable shoes that can be carried in a compact package, for example, fitting in a woman's purse or bag so that a woman can easily change to more comfortable shoes when she is no longer obligated to wear uncomfortable shoes.
- It is an object of the present invention to provide foldable footwear.
- It is another object of the present invention to provide footwear that is foldable with the one part of the sole touching the other part of the sole so that when touching the folded footwear one does not have to touch the footwear's sole.
- It is a further object of the present invention to provide footwear that is foldable in one direction only with the one part of the sole touching the other part of the sole.
- It is yet another object of the present invention to provide foldable footwear with straps, wherein the straps help keep the footwear unfolded when the footwear is worn.
- The present invention thus relates to a foldable footwear comprising:
- a. a sole fabricated using a single manufacturing casting, the sole having a ground side which touches the ground when the footwear is worn and a foot side which touches the user's foot when the footwear is worn, the sole comprising at least two portions, a front portion and a back portion; and
- b. at least one groove in the ground side of the sole, separating the front portion from the back portion and extending laterally from one side of the sole to the other side of the sole, the groove having a front portion edge and a back portion edge, the groove having a minimal width of 0.9 centimeters (cm) and a maximum width of 2.2 cm;
- c. a connecting element (strap etc.) attached to the front portion in at least one location and attached to the back portion in at least two locations, one on the lateral side of the sole and the other on the medial side of the sole, wherein said connecting element is designed to hold the footside of the back portion of the sole against the wearer's foot;
- wherein said footwear can be folded in one direction only where the ground side of the front portion is folded towards the ground side of the back portion such that the groove's front portion edge touches the groove's back portion edge.
- In some embodiments, the groove is substantially cylindrical.
- In some embodiments, the at least one groove's maximal height is 0.2 to 0.9 the thickness of the sole.
- In some embodiments, the thickness of the groove is 2.3 or 2.4 or 2.5 cm.
- In some embodiments, the sole has a minimum width of 0.5 cm and a maximum width of 2.5 cm. In some embodiments, the sole has a minimum width of 0.5 cm and a maximum width of 2.2 or 2.3 or 2.4 cm.
- In some embodiments, the at least one groove is positioned substantially in the middle of the sole.
- In some embodiments, the foldable footwear further comprises a strap attached on one side to the front portion and on the other side attached to the back portion, wherein the strap is stretched when the footwear is worn thus helping to keep the sole unfolded.
- In some embodiments, the foldable footwear further comprises a plurality of notches on the foot side of the sole, substantially positioned above said at least one groove, said notches forming a plurality of adjacent bands, wherein the each band's width on the foot side (A2) is larger than the width of the bottom of its adjacent notches (A1) such that said bands are drawn away from each other upon folding said footwear in the direction where the ground side of the front portion is moved towards the ground side of the back portion, and said bands are drawn closer to each other when the footwear is unfolded, said bands effectively preventing the footwear from being folded in the direction where the foot side of the front portion is folded towards the foot side of the back portion since the bands will eventually touch each other.
- In some embodiments, the footwear is a flip-flop sandal.
- In some embodiments, the sole of said flip-flop sandal is made from a flexible material comprising rubber or polyurethane.
- Embodiments and features of the present invention are described herein in conjunction with the following drawings:
-
FIG. 1 depicts a foldable footwear at the deployed state, according to one embodiment of the present invention. -
FIG. 2 depicts the foldable footwear ofFIG. 1 at the folded state. -
FIG. 3 is a side view of the foldable footwear ofFIG. 1 at the folded state, focusing at the foldable structure. -
FIG. 4 is a side view of the foldable structure of the foldable footwear ofFIG. 1 at an intermediate state between the folded state ofFIG. 3 and the deployed state. -
FIG. 5 is a side view of the foldable structure of the foldable footwear ofFIG. 1 at the deployed state. -
FIG. 6 is a side view of the foldable structure of a foldable footwear ofFIG. 1 according to another embodiment. -
FIG. 7 is a side view of the foldable structure of a foldable footwear ofFIG. 1 according to another embodiment. -
FIG. 8 is a side view of the foldable structure of a foldable footwear ofFIG. 1 according to another embodiment. -
FIG. 9A is a side view of a foldable footwear in an open position according to another embodiment.FIG. 9B is enlargement of thegroove 18 area ofFIG. 9A . -
FIG. 10 is a side view of a foldable footwear in a folded position. -
FIG. 11 is a closeup view of a foldable footwear in a folded position. -
FIG. 12 is a side view of a foldable footwear in a half folded position. -
FIG. 13 is a top view of a foldable footwear in an open position. -
FIG. 14 is a bottom view of a foldable footwear in an open position. - It should be understood that the drawings are not necessarily drawn to scale.
- The present invention will be understood from the following detailed description of preferred embodiments, which are meant to be descriptive and not limiting. For the sake of brevity, some well-known features, methods, systems, procedures, components, circuits, and so on, are not described in detail.
-
FIG. 1 depicts afoldable footwear 10 at the deployed state, according to one embodiment of the present invention. - The foldable footwear's 10 sole 26 comprises at least two portions, a relatively
rigid front portion 12A, a relativelyrigid back portion 12B. At least one relativelyfoldable structure 32A comprising agroove 18 in the ground side of the sole 26 separates thefront portion 12A from theback portion 12B and extends laterally from one side of the sole 26 to the other side of the sole 26. - According to a preferred embodiment, the sole-
portions foldable structure 32A are all produced together as a single casting of a flexible material, such as hard rubber, polyurethane, or other similar materials. - The term “foot-side” as used herein refers to the side of the sole 26 which is in contact with the foot of the user when a
footwear 10 is worn. - The term “ground-side” as used herein refers to the side of the sole 26 which is in contact with the ground when a
footwear 10 is worn. -
Footwear 10 is foldable in one direction only, which is the direction depicted byarrows 44. Namely,foldable footwear 10 is folded so that theground side 34A of thefront portion 12A is folded towards theground side 34B of theback portion 12B. When thefootwear 10 is folded over thegroove 18, the front portion edge of thegroove 18 touches the back portion edge of thegroove 18. - In this way, since a footwear's 10 sole is usually dirty from contact with the ground, when a user holds the folded
footwear 10 of the invention, the user is holding the foot-side and not the ground-side, hence the user's hands will not get dirty. - The weight of the user's foot on the
groove 32A prevents folding thefootwear 10 in the direction ofarrows 44 while being worn. - Stretchable straps 14 may attach
footwear 10 to the foot of the user, and are stretched upon foldingfootwear 10. When the user wears thefootwear 10, thestretchable straps 14 help in keeping thefootwear 10 unfolded. - Optionally, a
stretchable strap 20 can be pivotally connected to sole-portions footwear 10 in a folded state.Strap 20 may be rotated by inserting a finger into adepression 22. A person skilled in the art will easily be able to use many available alternatives in order to incorporate alternative solutions in order to maintain thefootwear 10 in a folded state. - In some embodiments, the
foldable footwear 10 further comprises a plurality of notches on the foot-side of the sole 26, substantially positioned above thegroove 18, the notches forming a plurality ofadjacent bands 16. Thebands 16 are drawn away from each other upon folding thefootwear 10 in the direction ofarrow 44, and thebands 16 are drawn closer to each other when thefootwear 10 is unfolded. Thus thebands 16 help to prevent thefootwear 10 from being folded in the direction contrary toarrow 44 since thebands 16 will eventually touch each other. -
FIG. 2 depicts thefoldable footwear 10 ofFIG. 1 at the folded state, wherein theback portion 12B is shown on top of thefront portion 12A. -
Foldable structure 32A may include a foldable layer 42 (shown inFIG. 3 ), which is connected to both sole-portions adjacent bands 16 extend from the foldable layer 42 towards the foot-side offootwear 10. Upon foldingfootwear 10,bands 16 are drawn away one from the other; upon deployingfootwear 10,bands 16 approach one another. - Pivots 24 connect the
stretchable strap 20 to sole-portions -
FIG. 3 is a side view of thefoldable footwear 10 ofFIG. 1 at the folded state, focusing on thefoldable structure 32A. - Each of the
transverse bands 16 may widen along the extending direction, i.e., the width A2 at the end ofband 16 is wider than the width A1 ofband 16 touching the foldable layer 42. - Even at the folded state of
FIG. 3 , wherebands 16 are drawn away one from the other,external edges 38 ofadjacent bands 16 are disposed close or even touch one another. - A transverse depression (groove) 18 at the ground-side of
foldable structure 32A prevents rejection forces between sole-portions - In some embodiments, the flexible (foldable) layer 42 can assist in preventing the
footwear 10 from folding in the direction opposing thesingle folding direction 44 by designing widening (from A1 to A2) such that each of thebands 16 has a narrower base touching the flexible layer 42 and a wider upper part A2 thereby providing mutual pressure between theadjacent bands 16 upon deployment of thefootwear 10 and preventing the footwear from folding in the direction contrary toarrow 44. -
FIG. 4 is a side view of thefoldable structure 32A of thefoldable footwear 10 ofFIG. 1 at an intermediate state between the folded state ofFIG. 3 and the deployed state. - At such an intermediate state, not only
external edges 38 ofadjacent bands 16 may contact one another, but also side surfaces 40 ofadjacent bands 16 when extending mutually pressed against each other apply a force on each other as shown in the arrows insidebands 16. -
FIG. 5 is a side view of thefoldable structure 32A of thefoldable footwear 10 ofFIG. 1 at the deployed state. - Upon full deployment of
footwear 10, not onlyexternal surfaces 40 touch one another but also theentire surfaces 40 ofadjacent bands 16 are pressed one on the other, disallowing further pressure. - This pressure between
sides 40 ofadjacent bands 16 preventsfolding footwear 10 to the direction opposite toarrows 44. -
FIG. 6 is a side view of thefoldable structure 32A of afoldable footwear 10 according to another embodiment. -
Footwear 10 may include more than onefoldable structure 32A. According to the example ofFIG. 6 ,footwear 10 may be folded to three pieces, asfootwear 10 includes two consequent sole-portions pairs. The first sole-portions pair includes sole-portion 12A and sole-portion 12B, and the second sole-portions pair includes sole-portion 12B and sole-portion 12C. - According to some embodiments, the first sole-portions pair is foldable by
foldable structure 32A, and the second sole-portions pair is foldable by foldable structure 32B. - The folding of both sole-portions pairs is in the same direction.
-
FIG. 7 is a side view of the foldable structure of afoldable footwear 10 according to another embodiment. - According to the example of
FIG. 7 footwear 10 may be folded to five pieces. Sole-portion 12A and sole-portion 12B are foldable byfoldable structure 32A in between them; sole-portion 12B and sole-portion 12C are foldable byfoldable structure 32C in between them; sole-portion 12C and sole-portion 12D are foldable byfoldable structure 32C in between them; sole-portion 12D and sole-portion 12E are foldable by foldable structure 32D in between them; sole-portion 12E and sole-portion 12F are foldable byfoldable structure 32E in between them; and sole-portion 12F and sole-portion 12G are foldable by foldable structure 32F in between them. -
FIG. 8 is a side view of the foldable footwear ofFIG. 1 at the folded state, according to another embodiment. - According to this embodiment each of
transverse bands 16 is parallel along the extending direction, thus the width of eachband 16 is of a constant value, giving the bands 16 a substantially rectangular form. - The prevention from folding the flexible layer 42 to the direction opposing the
single folding direction 44 is obtained bybands 16. - In some embodiments, the foldable sole 26 may comprise a series of sole-portions (32A, 32B, 32C, etc.), each for providing a single-directional folding to consequent sole-portion pairs (32A for 12A and 12B, 32B for 12B and 12C, etc.).
- In another aspect, the present invention further relates to a foldable footwear comprising:
- a. a sole fabricated using a single manufacturing casting, the sole having a ground side which touches the ground when the footwear is worn and a foot side which touches the user's foot when the footwear is worn, the sole comprising at least two portions, a front portion and a back portion, the sole having a minimum width of 0.5 centimeters (cm) and a maximum width 2.5 cm; and
- b. at least one groove in the ground side of the sole, separating the front portion from the back portion and extending laterally from one side of the sole to the other side of the sole, the groove having a front portion edge and a back portion edge, the groove having a minimal width of 0.9 cm and a maximum width of 2.2 cm;
- c. a connecting element (strap etc.) attached to the front portion in at least one location and attached to the back portion in at least two locations, one on the lateral side of the sole and the other on the medial side of the sole, wherein said connecting element is designed to hold the footside of the back portion of the sole against the wearer's foot;
- wherein said footwear can be folded in one direction only where the ground side of the front portion is folded towards the ground side of the back portion such that the groove's front portion edge touches the groove's back portion edge.
- The connecting element (strap) is designed to stretch when the footwear is worn, thus helping to keep the footwear unfolded.
-
FIG. 9A shows an embodiment of such footwear, in the form of a flip-flop with a strap. SW denotes the sole thickness. The sole thickness should be between 0.5 cm and 2.2 cm, as to if the sole is too thin it will not be comfortable for the user and might also tear more easily. A sole that is thicker than 2.5 cm will not be very practical to use as it might be cumbersome to fold and store, and might not feel very comfortable to wear. -
FIG. 9B is enlargement of thegroove 18 area ofFIG. 9A and showing the groove width GW. The groove width should be no less than 0.9 cm and no more than 2.2 cm. A groove that is narrower than 0.9 cm will not fold easily to a completely flat position where thefront portion 12A and theback portion 12B are parallel to each other and the groove's 18 front portion edge touches the groove's 18 back portion edge. Agroove 18 that is larger than 2.2 cm will not comfortable for walking, because the user might feel thelarge groove 18 in the sole. -
FIG. 10 is a side view of the foldable footwear in a folded position, showing thefront portion 12A and theback portion 12B essentially parallel to each other and the groove's 18 front portion edge touching the groove's 18 back portion edge. -
FIG. 11 is a closeup view of a foldable footwear in a folded position, showing thefront portion 12A and theback portion 12B essentially parallel to each other and the groove's 18 front portion edge touching the groove's 18 back portion edge. -
FIG. 12 is a side view of a foldable footwear in a half folded position, showing how the flip-flop can only fold in onedirection 44. -
FIG. 13 is a top view of a foldable footwear in an open position. -
FIG. 14 is a bottom view of a foldable footwear in an open position showing the groove's 18 width GW. - In the figures and/or description herein, the following reference numerals have been mentioned:
- numeral 10 denotes a footwear or a shoe according to an embodiment of the present invention;
- numerals 12A, 12B, 12C, 12D, 12E and 12F denote sole-portions of the
footwear 10; - numeral 14 denotes a stretchable strap, for attaching the user's foot to the
footwear 10; - numeral 16 denotes a band from a plurality of adjacent bands for preventing the
footwear 10 from folding in the direction contrary toarrow 44; - numeral 18 denotes a groove (depression), for allowing folding;
- numeral 20 denotes a stretchable strap for retaining the folded state of the
footwear 10; - numeral 22 denotes a depression for inserting a finger in order to manipulate the
stretchable strap 20; - numeral 24 denotes a pivot for attaching the
stretchable strap 20 to thefootwear 10 - numeral 26 denotes a foldable sole;
- numerals 32A, 32B, 32C, 32D, 32E denote foldable structures, each allowing folding a pair of sole-portions;
-
numerals - numeral 38 denotes an edge of a
band 16; - numeral 40 denotes a side surface of a
band 16; - numeral 42 denotes a foldable layer which is attached to both sole-
portions portions - numeral 44 denotes the single folding direction enabled by the
footwear 10 of the invention. - Many alterations and modifications may be made by those having ordinary skill in the art without departing from the spirit and scope of the invention. Therefore, it must be understood that the illustrated embodiment has been set forth only for the purposes of example and that it should not be taken as limiting the invention as defined by the following invention and its various embodiments.
- Therefore, it must be understood that the illustrated embodiment has been set forth only for the purposes of example and that it should not be taken as limiting the invention as defined by the following claims. For example, notwithstanding the fact that the elements of a claim are set forth below in a certain combination, it must be expressly understood that the invention includes other combinations of fewer, more or different elements, which are disclosed in above even when not initially claimed in such combinations. A teaching that two elements are combined in a claimed combination is further to be understood as also allowing for a claimed combination in which the two elements are not combined with each other, but may be used alone or combined in other combinations. The excision of any disclosed element of the invention is explicitly contemplated as within the scope of the invention.
- The words used in this specification to describe the invention and its various embodiments are to be understood not only in the sense of their commonly defined meanings, but to include by special definition in this specification structure, material or acts beyond the scope of the commonly defined meanings. Thus if an element can be understood in the context of this specification as including more than one meaning, then its use in a claim must be understood as being generic to all possible meanings supported by the specification and by the word itself.
- The definitions of the words or elements of the following claims are, therefore, defined in this specification to include not only the combination of elements which are literally set forth, but all equivalent structure, material or acts for performing substantially the same function in substantially the same way to obtain substantially the same result. In this sense it is therefore contemplated that an equivalent substitution of two or more elements may be made for any one of the elements in the claims below or that a single element may be substituted for two or more elements in a claim. Although elements may be described above as acting in certain combinations and even initially claimed as such, it is to be expressly understood that one or more elements from a claimed combination can in some cases be excised from the combination and that the claimed combination may be directed to a sub-combination or variation of a sub-combination. Insubstantial changes from the claimed subject matter as viewed by a person with ordinary skill in the art, now known or later devised, are expressly contemplated as being equivalently within the scope of the claims. Therefore, obvious substitutions now or later known to one with ordinary skill in the art are defined to be within the scope of the defined elements.
- The claims are thus to be understood to include what is specifically illustrated and described above, what is conceptually equivalent, what can be obviously substituted and also what essentially incorporates the essential idea of the invention.
Claims (7)
1. A foldable footwear comprising:
a. a sole fabricated using a single manufacturing casting, said sole having a ground side which touches the ground when the footwear is worn and a foot side which touches the user's foot when the footwear is worn, said sole comprising at least two portions, a front portion and a back portion; and
b. at least one groove in the ground side of the sole, separating the front portion from the back portion and extending laterally from one side of the sole to the other side of the sole, said groove having a front portion edge and a back portion edge, said groove having a minimal width of 0.9 centimeters (cm) and a maximum width of 2.2 cm;
c. a connecting element attached to the front portion in at least one location and attached to the back portion in at least two locations, one on the lateral side of the sole and the other on the medial side of the sole, wherein said connecting element is designed to hold the footside of the back portion of the sole against the wearer's foot;
wherein said footwear can be folded in one direction only where the ground side of the front portion is folded towards the ground side of the back portion such that the groove's front portion edge touches the groove's back portion edge.
2. The foldable footwear according to claim 1 , wherein said groove is substantially cylindrical.
3. The foldable footwear according to claim 1 , wherein the at least one groove's maximal height is 0.2 to 0.9 the thickness of the sole.
4. The foldable footwear according to claim 1 , wherein said at least one groove is positioned substantially in the middle of the sole.
5. The foldable footwear according to claim 1 , wherein said sole has a minimum width of 0.5 cm and a maximum width of 2.5 cm
6. The foldable footwear according to claim 1 , wherein said footwear is a flip-flop sandal.
7. The foldable footwear according to claim 5 , wherein the sole of said flip-flop sandal is made from a flexible material comprising rubber or polyurethane.
Priority Applications (1)
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US14/320,417 US20140310992A1 (en) | 2010-05-02 | 2014-06-30 | Foldable footwear |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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IL205479A IL205479A (en) | 2010-05-02 | 2010-05-02 | Foldable footwear |
IL205479 | 2010-05-02 | ||
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US13/098,533 Continuation-In-Part US8763275B2 (en) | 2010-05-02 | 2011-05-02 | Foldable footwear |
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CN105708037A (en) * | 2016-03-30 | 2016-06-29 | 何雨鸣 | Slippers convenient for carrying |
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USD816962S1 (en) | 2017-06-30 | 2018-05-08 | Frampton E. Ellis | Footwear sole |
US10159310B2 (en) | 2017-05-25 | 2018-12-25 | Nike, Inc. | Rear closing upper for an article of footwear with front zipper to rear cord connection |
USD837497S1 (en) | 2017-07-14 | 2019-01-08 | Anatomic Research, Inc. | Footwear sole |
USD838088S1 (en) | 2017-12-06 | 2019-01-15 | Anatomic Research, Inc. | Athletic sandal |
USD838090S1 (en) | 2017-07-14 | 2019-01-15 | Anatomic Research, Inc. | Footwear sole |
USD840663S1 (en) | 2018-06-14 | 2019-02-19 | Nike, Inc. | Shoe |
USD840645S1 (en) | 2018-02-06 | 2019-02-19 | Anatomic Research, Inc. | Athletic sandal upper |
USD841953S1 (en) | 2018-02-06 | 2019-03-05 | Anatomic Research, Inc. | Footwear sole |
USD844304S1 (en) | 2018-02-06 | 2019-04-02 | Anatomic Research, Inc. | Athletic sandal upper |
USD845592S1 (en) | 2017-12-07 | 2019-04-16 | Anatomic Research, Inc. | Sandal |
US10342290B2 (en) | 2015-08-13 | 2019-07-09 | Kevin Brooks | Modified shoe permitting forefoot extension for natural supination and pronation |
USD853707S1 (en) | 2018-06-14 | 2019-07-16 | Nike, Inc. | Shoe |
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USD863739S1 (en) | 2018-08-21 | 2019-10-22 | Anatomic Research, Inc. | Athletic sandal sole |
US10512298B2 (en) | 2017-05-23 | 2019-12-24 | Nike, Inc. | Footwear upper with lace-engaged zipper system |
US10568385B2 (en) | 2016-10-26 | 2020-02-25 | Nike, Inc. | Footwear heel spring device |
US10568382B2 (en) | 2016-10-26 | 2020-02-25 | Nike, Inc. | Upper component for an article of footwear |
US10602802B2 (en) | 2016-10-26 | 2020-03-31 | Nike, Inc. | Hinged footwear sole structure for foot entry and method of manufacturing |
US10758010B2 (en) | 2017-04-17 | 2020-09-01 | Nike, Inc. | Increased access footwear |
US10827803B2 (en) | 2018-04-13 | 2020-11-10 | Nike, Inc. | Footwear fastening system |
USD921337S1 (en) | 2020-07-16 | 2021-06-08 | Anatomic Research, Inc. | Athletic sandal |
USD924547S1 (en) * | 2019-04-04 | 2021-07-13 | Birkenstock Sales GmbH | Sandal |
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USD935143S1 (en) * | 2020-01-31 | 2021-11-09 | Peter Charles Whittington | Foldable sandal |
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US11185125B2 (en) | 2018-12-28 | 2021-11-30 | Nike, Inc. | Footwear with jointed sole structure for ease of access |
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US11464287B2 (en) | 2018-12-28 | 2022-10-11 | Nike, Inc. | Footwear element with locating pegs and method of manufacturing an article of footwear |
US11484088B2 (en) | 2019-07-26 | 2022-11-01 | Kindred Label, LLC | Foldable shoe |
USD973314S1 (en) | 2021-08-04 | 2022-12-27 | Anatomic Research, Inc. | Athletic sandal |
US11564438B1 (en) * | 2022-04-18 | 2023-01-31 | Nir Daniel | Collapsible footwear and method of altering a configuration of a collapsible sole to a compact form |
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US20140373396A1 (en) * | 2013-06-25 | 2014-12-25 | Chin Yueh Chang | Foldable shoe sole |
US10342290B2 (en) | 2015-08-13 | 2019-07-09 | Kevin Brooks | Modified shoe permitting forefoot extension for natural supination and pronation |
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US10568385B2 (en) | 2016-10-26 | 2020-02-25 | Nike, Inc. | Footwear heel spring device |
US11304479B2 (en) | 2017-02-28 | 2022-04-19 | Nike, Inc. | Footwear with laceless fastening system |
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US11172727B2 (en) | 2017-05-23 | 2021-11-16 | Nike, Inc. | Rear access article of footwear with movable heel portion |
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USD816962S1 (en) | 2017-06-30 | 2018-05-08 | Frampton E. Ellis | Footwear sole |
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USD837497S1 (en) | 2017-07-14 | 2019-01-08 | Anatomic Research, Inc. | Footwear sole |
CN107334207A (en) * | 2017-08-04 | 2017-11-10 | 佛山市人和科技有限公司 | A kind of folding slippers |
USD844947S1 (en) | 2017-12-06 | 2019-04-09 | Anatomic Research, Inc. | Athletic sandal upper |
USD838088S1 (en) | 2017-12-06 | 2019-01-15 | Anatomic Research, Inc. | Athletic sandal |
USD845592S1 (en) | 2017-12-07 | 2019-04-16 | Anatomic Research, Inc. | Sandal |
USD844304S1 (en) | 2018-02-06 | 2019-04-02 | Anatomic Research, Inc. | Athletic sandal upper |
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USD869825S1 (en) | 2018-02-06 | 2019-12-17 | Anatomic Research, Inc. | Athletic sandal |
USD844945S1 (en) | 2018-02-06 | 2019-04-09 | Anatomic Research, Inc. | Athletic sandal |
USD844946S1 (en) | 2018-02-06 | 2019-04-09 | Anatomic Research, Inc. | Athletic sandal sole |
USD841953S1 (en) | 2018-02-06 | 2019-03-05 | Anatomic Research, Inc. | Footwear sole |
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USD863739S1 (en) | 2018-08-21 | 2019-10-22 | Anatomic Research, Inc. | Athletic sandal sole |
US11464287B2 (en) | 2018-12-28 | 2022-10-11 | Nike, Inc. | Footwear element with locating pegs and method of manufacturing an article of footwear |
US11185125B2 (en) | 2018-12-28 | 2021-11-30 | Nike, Inc. | Footwear with jointed sole structure for ease of access |
US11191320B2 (en) | 2018-12-28 | 2021-12-07 | Nike, Inc. | Footwear with vertically extended heel counter |
US11191321B2 (en) | 2019-02-13 | 2021-12-07 | Nike, Inc. | Footwear heel support device |
USD924547S1 (en) * | 2019-04-04 | 2021-07-13 | Birkenstock Sales GmbH | Sandal |
US11330859B2 (en) * | 2019-06-14 | 2022-05-17 | Cassidy Ray, LLC | Foldable shoe |
US11576458B2 (en) | 2019-07-26 | 2023-02-14 | Cassidy Ray, LLC | Foldable shoe |
US11484088B2 (en) | 2019-07-26 | 2022-11-01 | Kindred Label, LLC | Foldable shoe |
US11707113B2 (en) | 2019-10-18 | 2023-07-25 | Nike, Inc. | Easy-access article of footwear with cord lock |
US11589653B2 (en) | 2019-11-25 | 2023-02-28 | Nike, Inc. | Tension-retaining system for a wearable article |
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USD935143S1 (en) * | 2020-01-31 | 2021-11-09 | Peter Charles Whittington | Foldable sandal |
USD921337S1 (en) | 2020-07-16 | 2021-06-08 | Anatomic Research, Inc. | Athletic sandal |
US20220264988A1 (en) * | 2021-02-24 | 2022-08-25 | Jianqiu Dong | Foldable Slipper |
USD988660S1 (en) | 2021-07-27 | 2023-06-13 | Frampton E. Ellis | Lateral side extension for the midfoot of a shoe sole |
USD973314S1 (en) | 2021-08-04 | 2022-12-27 | Anatomic Research, Inc. | Athletic sandal |
USD1003012S1 (en) | 2022-02-04 | 2023-10-31 | Anatomic Research, Inc. | Athletic sandal |
US11910867B2 (en) | 2022-03-28 | 2024-02-27 | Nike, Inc. | Article of footwear with heel entry device |
US11564438B1 (en) * | 2022-04-18 | 2023-01-31 | Nir Daniel | Collapsible footwear and method of altering a configuration of a collapsible sole to a compact form |
US11950657B1 (en) * | 2023-06-17 | 2024-04-09 | Camilia Smith | Convertible footwear |
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