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GB1603646A - Footwear - Google Patents

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Publication number
GB1603646A
GB1603646A GB1710877A GB1710877A GB1603646A GB 1603646 A GB1603646 A GB 1603646A GB 1710877 A GB1710877 A GB 1710877A GB 1710877 A GB1710877 A GB 1710877A GB 1603646 A GB1603646 A GB 1603646A
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GB
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Prior art keywords
sole
structure
footwear
article
ground
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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.)
Expired
Application number
GB1710877A
Original Assignee
Johnson J
Priority date (The priority date 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 date listed.)
Filing date
Publication date

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Classifications

    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00Footwear characterised by the material
    • A43B1/0018Footwear made at least partially of flexible, bellow-like shaped material
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/14Soles; Sole and heel units characterised by the constructive form
    • A43B13/18Resilient soles
    • A43B13/20Pneumatic soles filled with a compressible fluid, e.g. air, gas
    • A43B13/203Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve

Description

(54) IMPROVEMENTS IN OR RELATING TO FOOTWEAR (71) I, JOSEPH WILLIAM JOHN SON, a British Subject, c/o Sr. Oliver, Matanzas 25, Barcelona, 16, Spain, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates in general to footwear.

According to the invention there is provided a sole structure for attachment to an article of footwear; said sole structure comprising a ground-engageable sole supporting a plurality of resiliently-compressible containers or capsules filled with liquid or gas and means for detachably fixing said sole to the footwear article with the containers or capsules disposed between the footwear article and said sole during use.

The ground-engageable sole may itself support a tray into which the containers or capsules are placed.

Preferably the aforementioned containers or capsules are in the form of individual sacs made from flexible plastics or rubber and these sacs are filled with fluid, such as a liquid or pressurized air or gas. During manufacture, a range of containers of different size and/or shape can be provided for different applications and effects in connection with footwear.

The sole structure may employ a pair of spaced walls which may be parallel and flat.

One of these walls forms the groundengaging sole and the other of which lies adjacent to a conventional ground-engaging sole or inner sole of the article of footwear.

The containers are then located between the pair of walls.

Overall, the aforementioned containers or capsules serve to provide a generally resilient cushion, especially advantageous to a user when worn in walking over rough terrain and for sports activities for example.

It is also possible to provide additional spring means or similar components within the sole structure to supplement or replace some of the containers or capsules. To control the pressure on the wearer's foot which is useful in the treatment of certain foot ailments, insert wedges or shaped blocks, which may be solid and rigid can be interspersed with the containers or capsules.

Other devices can be additionally provided in the sole structure as described hereinafter.

The ground-engaging sole of the structure made in accordance with the invention may also take the form of a curvilinear plate.

Alternatively, this sole may have one or more relatively inclined portions provided with pivot connection means for attachment to the article of footwear.

By utilizing sole structures described hereinafter, a wearer can increase his normal speed of walking or running and his jumping height and he can, moreover, perform the actions mentioned with less fatigue. In addition, sole structures can be specifically designed to assist patients with foot or leg problems.

A sole structure in accordance with the invention may have a ground-engaging false sole preformed, for example longitudinally arcuate, and made from flexible material with a good non-fatiguing memory - such as plastics or steel or a combination of materials. This sole has a plane configuration almost identical but proportionally enlarged to that of the conventional normal groundengaging sole of the article of foot-wear with which it is used. In some cases the false sole is arcuate transversally and/or attached transversally to the normal footwear sole.

Usually the attachment between the normal and false soles would be at the footwear sole arch area between the footwear sole fore region and the forward end of the heel. In this way two wedge like open air-spaces are formed one front and one rear between the false sole and footwear sole but only when the sole is free of body weight or other load.

A plenum in the form of a tray having a plane configuration slightly oversize to that of the footwear sole can then be attached planically and congruently against the false sole-usually exteriorly but sometimes interiorly. This tray is preferably adjustable longitudinally, laterally and inclinably before becoming fixedly attached to the sole.

Thus, when the tray is raised by body weight via the flattening of the false sole its walls will clear the footwear article and encompass the upper thereof to about the height of the vamp or toe cap without chafe. A protective coaming is thus formed against wet and dirt. The transverse wall at the rear end of the tray is almost completely abridged for clearance. Without loading the tray is inclined to the footwear sole thus forming a,wedge-like chamber or chambers into which a variety of attachments and devices can be received; extracted, manipulated or digitipulated to conform with the situation in question.

In another sole structure an elastic tube or sleeve, which may be reticulate, is stretched over the false sole fore part, whether fitted with a tray or not, and the open end of the tube is nipped into a flat closed state by a hinge or associated fixing bolts used to hinge the false sole to the footwear sole. Additional rubber bands can be fitted over the sheath or sleeve for a firmer grip. A similar configuration can be employed at the heel end of the false sole. Capsules, wedges and other attachments or devices can be introduced and immobilized by the sheath or sleeve. The false sole, preferably arched, can be impressed or pierced to enable the attachment units to be embedded therein.

Instead of individual capsules or units, a single resilient unit composed of interconnected capsules and analogous to blister sea-weed is adhesively bonded to the false sole and/or inside the sheath or sleeve.

In another construction two or more plastics or rubber covered wheels or a single long roller is attachable to an arcuate false sole in the region of the footwear arch.

As the sole angulates over the ground and the false sole heel end flattens the wheels or roller are engaged with the ground when the foot is horizontal and the body is effortlessly carried on the wheels or roller until the raising of the heel displaces all the body weight to the toe end. By keeping the foot horizontal for a little longer than normal and by swinging the arms and other leg the rolling motion can be enhanced.

In another construction the aforementioned wheels or rollers have special ground engaging profiles. With gravel or soft mud or marshy terrain a non-reversible rotatable body has long fin-form teeth arcuate in the opposite direction to the heel end of the false sole. Alternatively a fylfot body with blades can be employed. When the wearer engages with the heel or mud for example the contrary opposite force to the body weight applied to the ground by the blade or fin in contact gives an upward forward thrust to be rotatable body which rotates to bring the next fin or blade into contact. As the fins or blades revolve they tend to impart thrust to the wearer to ensure minimum resistance to extraction from the mud.

In further embodiment of the invention energy storage devices or electric generators can be operated by the motion of the false sole and/or plenum tray.

The invention may be understood more readily, and other features of the invention may become apparent from consideration of the following description.

Embodiments of the invention will now be described, way of examples only, with reference to the accompanying drawings wherein: - Figure l is a diagrammatic side view of an article of footwear, partly in section, showing a sole structure embodying the invention; Figure 2 is a diagrammatic side view of another sole structure embodying the invention; Figures 3 and 4 depict insert blocks usable with a sole structure made in accordance with the invention; Figure 5 is a diagrammatic side view of another sole structure constructed in accordance with the invention; Figure 6 is a diagrammatic plan view of a further sole structure constructed in accordance with the invention; Figure 7 is a side view of the structure shown in Figure 6; Figure 8 is a bead element for use with the structure of Figures 5, 6 and 7; ; Figures 9a and 9b are diagrammatic end and side view of another wedge insert for use with the structures embodying the invention; Figure 10 depicts further forms of inserts for use with the structures embodying the invention Figure 11 depicts one form of an inflatable capsule unit for use in the structures embodying the invention; Figure 12 depicts various devices usuable with the structures embodying the invention; and Figure 13 depicts one form of spring element usuable with structures embodying the invention As shown in Figure 1 of the drawings, a conventional article of footwear 10, such as a boot or shoe, has a sole structure 11 made in accordance with the invention attached thereto.This sole structure 11 employs upper and lower walls 12, 13 spaced apart and a plurality of flexible resilient individual containers or sacs 14 each made from rubber or plastics and filled with a liquid or gas.

The lower wall 12 forms a ground-engaging sole and this wall 12 can move through a distance as represented by the dotted line 12'.

In this embodiment, the sole structure 11 is separate from the article of footwear and is attached thereto by means of a wall or walls 15 engaging over the article, e.g., in the manner of an overshoe or otherwise.

The walls or walls 15 incorporate a flexible concertined skirt portion 16 which accommodates the movement of the sole 12. The wall 13 engages on the normal groundengaging sole of the article 10 but instead the wall 13 can lie adjacent the inner sole of the footwear article joined to the upper of the footwear article 10.

In the embodiment depicted in Figure 1, the ground-engaging lower sole 12 is flat. In other embodiments of the invention, however, the lower sole can be bowed or curvilinear or composed of one or more inclined portions. Thus, Figure 2 depicts a construction where the lower sole 12 takes the form of a resilient steel plate which is normally curvilinear when free of load and is attached, for example, to the normal sole of the article of footwear by one or more fixing bolts 18 or the like permitting easy detachment of the sole structure 11. The containers or sacs are disposed in chambers 19, 20 at end regions of the structure. It is convenient to provide a rubber or plastic bead 21 at the front and rear edges of the sole plate 12 and flexible skirts 40 prevent the ingress of dirt to the regions 19, 20.

Relief holes or slots can be provided in the plate 12 to control the degree of resilience thereof. It is also possible to use a resilient synthetic plastics material for the plate 12.

In a modified construction a plenum or tray is mounted above the plate 12 in one or both chambers 19, 20 and this tray has a side wall which forms a skirt closing off the chambers 19, 20 to the exterior. The side wall of the tray may be shaped to move to encompass the associated part of the normal sole of the article with clearance when the plate 12 deforms under load. The containers or sacs 14 can be arranged in the tray.

In other embodiments, the lower sole 12 may have rectilinear inclined front and rear portions (represented as chain-dotted lines 22 in Figure 2) which are separately or collectively pivotably connected to the normal sole of the article of footwear with pivot connection means in the form of one or more hinges.

Other attachments and devices can be employed with the sole structures as described. For example, one or more transverse resilient steel plates may be utilised to inhibit the tendency of side tilting of the wearer's ankle and this may be especially useful for patients with weak ankles. The pressure on selected parts of a wearer's foot can also be controlled by inserting wedges or shaped blocks between the sacs 14. Such blocks may be made from a solid hard material such as wood or from slightly resilient rubber or plastics. The blocks may take the form depicted in Figures 3 or 4 with respective concave and convex sides 30 for engaging with the sacs 14. Other components such as strips may be used to inhibit the action of selected sacs in desired regions.

It is possible also to utilise energy-storing and release devices, such as springs and ratchet mechanism, which release stored energy and impart such energy to the sole 12. One such device may be operated by the wearer repeatedly striking his heel on the ground to charge-up the energy storing device. The energy may then be released against the sole 12, for example, by the wearer striking the front part of this foot on the ground, to enable the wearer to lead or jump. Such devices can best be utilised in the embodiment depicted in Figure 2 where there is adequate space in the front and rear chambers 19, 20 of the sole structure 11.

The sole structure 11 may also incorporate a system with one or more end tubes interconnecting the sacs 14 and permitting fluid e.g. air or gas to be fed to the sacs 14 or evacuated therefrom to achieve a desired overall pressure and' resilience. Where air is used to inflate the sacs, it is possible to charge air into the sacs 14 by a system whereby the wearer repeatedly strikes part of his foot onto the ground or repeatedly jumps up and down.

Another device which may be incorporated with a sole structure as described and/or illustrated takes the form of a wheel or roller disposed at about the centre of the overall structure. This wheel or roller is preferably mounted for rotation on a movable spindle or the like which enables the wheel or roller to selectively retract inside the lower sole plate to adopt an inoperative position, or to extend partly from this plate to thereby adopt a ground-engaging working position.

As shown in Figure 5 a sole structure 11 employs an arcuate flexible resilient sole 12 which carries a detachable tray 21 for receiving the containers or sacs, flexible units and shaped blocks or wedges. The tray 21 has a bead 22 of flexible material around the upper edge of its side wall and encompasses the toe cap or vamp 23 of the article of footwear 10.

The sole 12 is fixed to the tray 21 with the aid of a fixing bolt and thumb nut 24 (shown proud of the plate 12 for the sake of clarity) and an oblique-faced washer 25 serves to orientate the tray on the swash plate principle. The sole 12 is fixed to the sole 15 of the footwear article 10 with one or more screws or bolts 26. A ribbed sleeve or bead 27 is provided at the forward edge of the sole 12 or enveloping the edge of the sole 12 as far as the arch of the article 10. The drawing depicts the tray 21 in the position free of body weight. The tray 21 can be sprung downwards away from the sole 15 and wedged open to permit the necessary units etc (not shown to be inserted and arranged therein. The rear heel portion of the sole structure 12 may incorporate a similar tray 21 as described.

Figures 6 and 7 depict a structure similar to Figure 5 but here the sole 12 is substantially planar.

Figure 8 shows a suitable bead element for the trays 21 which takes the form of a section of ribbed hose pipe with a longitudinal slit 27.

Figure 10 shows alternative form of wedge inserts or shaped blocks which have apertures 28 therein for receiving tapered pins or the like to expand the blocks to a desired shape and/or size.

Figure 11 depicts an inflatable unit composed of tubes which can be used as one of the inflatable sacs as mentioned previously.

Figures 9a and 9b depict a versatile wedge for use with the sole structures as described herein. The wedge takes the form of a resilient block 62 with a planar face 30, a side with concave depression of flute 32 and an opposite side with a projection or bulge 36. At one end the block 62 has a partspherical cavity 37 in which a capsule 38 is received and at the other end the block has a quadrate cavity 51. A tapered screw 52 or pin extends through the block and adjusts its overall shape. A slot 33 is provided to increase the flexibility of the block. As can be appreciated a series of such members can be shaped locked together. The block can be a one-piece component or composed of separate parts divided along the centre line or obliquely and moved relatively by adjustment of the screw or pin 52.

Figure 13 depicts a shaped spring element for use as discussed previously to prevent ankle disability. The element would be placed at the sides of the sole structure.

Various forms of interleaved spring sections possibly of aerofoil shape and made from rubber can be incorporated in the sole structures described.

The use of wheels or rollers has been mentioned previously and Figure 12 depicts in the same illustration alternative rotatable bodies which may be employed. A body 60 of fylfot shape can be used with flexible blades 61 to assist a user to walk on mud.

Such a body can be provided at the heel and/or toe of the sole structure. Other bodies with profiles 63-66 shown in four quadrants respectively, can be adapted to a particular terrain or surface. To ensure the rotatable body 60, 63-66 only rotates in one direction a detent mechanism 68 can be employed. In another construction, a ratchet and pawl or some other type of non reversing mechanism is incorporated in a wheel between two fylfots and all three bodies are fixed to a shaft rotatably supported by bearings mounted on a bracket fixed to the footwear heel base.

The use of an energy-storin mechanism is discussed above. A lever-operated electric generator can be arranged at the heel and/or toe of a sole structure and the electricity generated can charge a battery or the like used to power some equipment carried or used by the wearer. This specification conforms with the principle of three kinematic inversions, i.e. for every mechanism there exists three analogous kinematic inversions.

WHAT I CLAIM IS: 1. A sole structure for attachment to an article of footwear; said sole structure comprising a ground-engageable sole supporting a plurality of resiliently-compressible containers or capsules filled with liquid or gas and means for detachably fixing said sole to the footwear article with the containers or capsules disposed between the footwear article and said sole during use.

2. A sole structure according to claim 1 and having a pair of spaced walls one of which forms the ground-engaging sole and the other of which lies adjacent to a conventional ground-engaging sole or inner sole of said article of footwear.

3. A sole structure according to claim 2 wherein the walls are parallel and flat.

4. A sole structure according to claim 2 or 3, wherein said fixing means include a flexible concertined skirt portion for accommodating relative displacement between the walls.

5. A sole structure according to claim 1, wherein the ground-engaging sole takes the form of a curvilinear resilient plate.

6. A sole structure according to claim 1, wherein the ground-engaging sole has one or more relatively inclined portions.

7. A sole structure according to claim 6, wherein said one or more relatively inclined portions are provided with pivot connection means for attachment to the article of footwear.

8. A sole structure according to any one of the preceding claims, wherein one or more resilient spring elements are also supported by the ground-engaging sole.

9. A sole structure according to claim 10, wherein said resilient element or ele

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (18)

**WARNING** start of CLMS field may overlap end of DESC **. aid of a fixing bolt and thumb nut 24 (shown proud of the plate 12 for the sake of clarity) and an oblique-faced washer 25 serves to orientate the tray on the swash plate principle. The sole 12 is fixed to the sole 15 of the footwear article 10 with one or more screws or bolts 26. A ribbed sleeve or bead 27 is provided at the forward edge of the sole 12 or enveloping the edge of the sole 12 as far as the arch of the article 10. The drawing depicts the tray 21 in the position free of body weight. The tray 21 can be sprung downwards away from the sole 15 and wedged open to permit the necessary units etc (not shown to be inserted and arranged therein. The rear heel portion of the sole structure 12 may incorporate a similar tray 21 as described. Figures 6 and 7 depict a structure similar to Figure 5 but here the sole 12 is substantially planar. Figure 8 shows a suitable bead element for the trays 21 which takes the form of a section of ribbed hose pipe with a longitudinal slit 27. Figure 10 shows alternative form of wedge inserts or shaped blocks which have apertures 28 therein for receiving tapered pins or the like to expand the blocks to a desired shape and/or size. Figure 11 depicts an inflatable unit composed of tubes which can be used as one of the inflatable sacs as mentioned previously. Figures 9a and 9b depict a versatile wedge for use with the sole structures as described herein. The wedge takes the form of a resilient block 62 with a planar face 30, a side with concave depression of flute 32 and an opposite side with a projection or bulge 36. At one end the block 62 has a partspherical cavity 37 in which a capsule 38 is received and at the other end the block has a quadrate cavity 51. A tapered screw 52 or pin extends through the block and adjusts its overall shape. A slot 33 is provided to increase the flexibility of the block. As can be appreciated a series of such members can be shaped locked together. The block can be a one-piece component or composed of separate parts divided along the centre line or obliquely and moved relatively by adjustment of the screw or pin 52. Figure 13 depicts a shaped spring element for use as discussed previously to prevent ankle disability. The element would be placed at the sides of the sole structure. Various forms of interleaved spring sections possibly of aerofoil shape and made from rubber can be incorporated in the sole structures described. The use of wheels or rollers has been mentioned previously and Figure 12 depicts in the same illustration alternative rotatable bodies which may be employed. A body 60 of fylfot shape can be used with flexible blades 61 to assist a user to walk on mud. Such a body can be provided at the heel and/or toe of the sole structure. Other bodies with profiles 63-66 shown in four quadrants respectively, can be adapted to a particular terrain or surface. To ensure the rotatable body 60, 63-66 only rotates in one direction a detent mechanism 68 can be employed. In another construction, a ratchet and pawl or some other type of non reversing mechanism is incorporated in a wheel between two fylfots and all three bodies are fixed to a shaft rotatably supported by bearings mounted on a bracket fixed to the footwear heel base. The use of an energy-storin mechanism is discussed above. A lever-operated electric generator can be arranged at the heel and/or toe of a sole structure and the electricity generated can charge a battery or the like used to power some equipment carried or used by the wearer. This specification conforms with the principle of three kinematic inversions, i.e. for every mechanism there exists three analogous kinematic inversions. WHAT I CLAIM IS:
1. A sole structure for attachment to an article of footwear; said sole structure comprising a ground-engageable sole supporting a plurality of resiliently-compressible containers or capsules filled with liquid or gas and means for detachably fixing said sole to the footwear article with the containers or capsules disposed between the footwear article and said sole during use.
2. A sole structure according to claim 1 and having a pair of spaced walls one of which forms the ground-engaging sole and the other of which lies adjacent to a conventional ground-engaging sole or inner sole of said article of footwear.
3. A sole structure according to claim 2 wherein the walls are parallel and flat.
4. A sole structure according to claim 2 or 3, wherein said fixing means include a flexible concertined skirt portion for accommodating relative displacement between the walls.
5. A sole structure according to claim 1, wherein the ground-engaging sole takes the form of a curvilinear resilient plate.
6. A sole structure according to claim 1, wherein the ground-engaging sole has one or more relatively inclined portions.
7. A sole structure according to claim 6, wherein said one or more relatively inclined portions are provided with pivot connection means for attachment to the article of footwear.
8. A sole structure according to any one of the preceding claims, wherein one or more resilient spring elements are also supported by the ground-engaging sole.
9. A sole structure according to claim 10, wherein said resilient element or ele
ments consist of or include a transverse resilient plate.
10. A sole structure according to any one of preceding claims, wherein insert wedges or shaped blocks are interspersed with the containers or capsules.
11. A sole structure according to any one of the preceding claims and further comprising an energy-storage and release device adapted to store energy and to impart said energy to the ground-engaging sole.
12. A sole structure according to any one of the preceding claims and further comprising a system with one or more valves and tubes interconnecting the containers or capsules and permitting the containers or capsules to be selectively charged with pressure fluid to produce a desired pressure therein.
13. A sole structure according to any one of the preceding claims and further comprising a wheel or roller or bladed rotatable body supported by said sole.
14. A sole structure according to claim 13, wherein the wheel, roller or bladed rotatable body is displaceable in relation to the ground-engaging sole to adopt an operative or non-operative position.
15. A sole structure according to any one of the preceding claims and further comprising electric generator means supported by said sole.
16. A sole structure according to claim 1, wherein said ground-engageable sole itself supports a tray into which the containers or capsules are placed.
17. An article of footwear when provided with a sole structure according to any one of the preceding claims.
18. A sole structure substantially as described with reference to, and as illustrated in any one or more of the Figures of the accompanying drawings.
GB1710877A 1978-05-31 1978-05-31 Footwear Expired GB1603646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1710877A GB1603646A (en) 1978-05-31 1978-05-31 Footwear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1710877A GB1603646A (en) 1978-05-31 1978-05-31 Footwear

Publications (1)

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GB1603646A true true GB1603646A (en) 1981-11-25

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GB1710877A Expired GB1603646A (en) 1978-05-31 1978-05-31 Footwear

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536974A (en) * 1983-11-04 1985-08-27 Cohen Elie Shoe with deflective and compressionable mid-sole
GB2171288A (en) * 1985-02-22 1986-08-28 James Farrell Reid Dancing shoes
US4611412A (en) * 1983-11-04 1986-09-16 Cohen Elie Shoe sole with deflective mid-sole
US4774774A (en) * 1986-05-22 1988-10-04 Allen Jr Freddie T Disc spring sole structure
US4864738A (en) * 1988-07-19 1989-09-12 Zvi Horovitz Sole construction for footwear
US4887367A (en) * 1987-07-09 1989-12-19 Hi-Tec Sports Plc Shock absorbing shoe sole and shoe incorporating the same
USD315634S (en) 1988-08-25 1991-03-26 Autry Industries, Inc. Midsole with bottom projections
WO1991003961A1 (en) * 1989-09-22 1991-04-04 Avia Group International, Inc. Shoe sole construction
US5564202A (en) * 1990-05-24 1996-10-15 Hoppenstein; Reuben Hydropneumatic support system for footwear
US6026593A (en) * 1997-12-05 2000-02-22 New Balance Athletic Shoe, Inc. Shoe sole cushion
US6253466B1 (en) 1997-12-05 2001-07-03 New Balance Athletic Shoe, Inc. Shoe sloe cushion
US9125453B2 (en) 2010-05-28 2015-09-08 K-Swiss Inc. Shoe outsole having tubes

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536974A (en) * 1983-11-04 1985-08-27 Cohen Elie Shoe with deflective and compressionable mid-sole
US4611412A (en) * 1983-11-04 1986-09-16 Cohen Elie Shoe sole with deflective mid-sole
GB2171288A (en) * 1985-02-22 1986-08-28 James Farrell Reid Dancing shoes
US4774774A (en) * 1986-05-22 1988-10-04 Allen Jr Freddie T Disc spring sole structure
US4887367A (en) * 1987-07-09 1989-12-19 Hi-Tec Sports Plc Shock absorbing shoe sole and shoe incorporating the same
US4864738A (en) * 1988-07-19 1989-09-12 Zvi Horovitz Sole construction for footwear
USD315634S (en) 1988-08-25 1991-03-26 Autry Industries, Inc. Midsole with bottom projections
WO1991003961A1 (en) * 1989-09-22 1991-04-04 Avia Group International, Inc. Shoe sole construction
US5014449A (en) * 1989-09-22 1991-05-14 Avia Group International, Inc. Shoe sole construction
US5367792A (en) * 1989-09-22 1994-11-29 Avia Group International, Inc. Shoe sole construction
US5564202A (en) * 1990-05-24 1996-10-15 Hoppenstein; Reuben Hydropneumatic support system for footwear
US6026593A (en) * 1997-12-05 2000-02-22 New Balance Athletic Shoe, Inc. Shoe sole cushion
US6253466B1 (en) 1997-12-05 2001-07-03 New Balance Athletic Shoe, Inc. Shoe sloe cushion
US9125453B2 (en) 2010-05-28 2015-09-08 K-Swiss Inc. Shoe outsole having tubes

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