WO1991016831A1 - A shoe and a sole therefor - Google Patents

A shoe and a sole therefor Download PDF

Info

Publication number
WO1991016831A1
WO1991016831A1 PCT/GB1991/000740 GB9100740W WO9116831A1 WO 1991016831 A1 WO1991016831 A1 WO 1991016831A1 GB 9100740 W GB9100740 W GB 9100740W WO 9116831 A1 WO9116831 A1 WO 9116831A1
Authority
WO
WIPO (PCT)
Prior art keywords
sole
connecting means
containers
shoe
forefoot
Prior art date
Application number
PCT/GB1991/000740
Other languages
French (fr)
Inventor
Robert John Seymour
Original Assignee
Robert John Seymour
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
Application filed by Robert John Seymour filed Critical Robert John Seymour
Publication of WO1991016831A1 publication Critical patent/WO1991016831A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
    • A43B13/206—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with tubes or pipes or tubular shaped cushioning members
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/189—Resilient soles filled with a non-compressible fluid, e.g. gel, water
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
    • A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve

Definitions

  • This invention relates to soles for shoes more particularly, but not. exclusively to athletic and sports shoes.
  • a sole for a shoe comprising a first flexible container provided at a heel receiving region of the sole, a second flexible container provided at a forefoot receiving region of the sole, fluid disposed in the first and second containers and means for connecting the first and second containers together in fluid communication.
  • the embodiment of the invention described comprises a mid-sole of a sports shoe which incorporates compressable sacs moulded in an elastomeric material and filled with either a gas or liquid which provides a cushioning medium. These sacs are placed under the heel area and the forefoot and are embedded into the mid-sole just beneath the upper surface. The two sacs are interconnected via a capillary tube again formed from a compressable elastomeric material which follows the pressure path of the foot on the outside edge and provides a balancing pressure between the two sacs.
  • the embodiment of the invention also provides for a valve, means comprising two members formed from a stiff but bendable plastics polymer
  • SUBS each with raised integral ridges at intervals along its length. These are set into position in a pre ⁇ formed recess above and below the capillary tube, just touching the tube's surface.
  • the ridges face each other across the tube and act to seal the tube when the ridges are pushed together.
  • the embodiment functions by transferring the increase in gas or liquid pressure created on the initial heel impact along the capillary tube into the forefoot sac and trapping this increase in pressure by operation of the valve means by the rolling foot to give an extra platform of resistance under the forefoot for a better push-off and "kick" .
  • On push off the pressure created pushes the gas or liquid back along the capillary tube to the heel sac and the system pressure equalises throughout whilst the foot is off the ground ready for the next stride.
  • Fig. I. shows the imprint of a normal pronating foot and pressure path when the foot is in contact with the ground during running or walking.
  • Fig. II. shows an exploded view of an embodiment of the invention applied to the mid-sole of a sports shoe.
  • Fig. III shows the impact point of a foot when running or walking.
  • Fig. IV shows the' pressure points along the foot during the roll stage of running or walking.
  • Fig. V. shows the push-off point under the toes during running or walking.
  • Fig. VI. is a section through the mid-sole of a sports shoe incorporating an embodiment of the invention.
  • Fig. VII. is a section through the mid-sole of a sport shoe incorporating an embodiment of the invention through the dotted line III - III shown in
  • Fig. VIII. is a section as in Figure VII. with pressure applied.
  • Fig. IX a, b &. c illustrate different shapes of reservoir to compensate for walking abnormalities.
  • Fig. I shows the imprint of the foot during running or walking and indicates the load pressure path created during each stride.
  • the load pressure 10 starts at the outside of the edge of the heel 10 on impact then travels along the outside portion of the foot 11 then crosses over the forefoot area 12 and finally finishes behind the big toe 13 on push-off.
  • Fig. II. shows an exploded view of the components of an embodiment of the invention as applied to a sports shoe.
  • a mid-sole 14 which is made from a cellular
  • S UBS foam is provided with moulded recesses 15 which accept the components of the embodiment of the invention.
  • An injection moulded plastic strip 16a with integral raised ridges is placed into the base of a connecting channel 17 between two main recesses 15.
  • Two at least partially flexible sacs or reservoirs made from a plyable plastic blow moulded into containers 18a and 18b are provided. These two containers 18 are connected by a capillary tube 19 moulded in a plyable plastic.
  • the tube may be of circular cross-section or ellipsoidal cross section, in which case the major axis of the ellipse lies between the sides of the channel 17.
  • the complete unit being filled with a liquid or gas, for example, 750 CPS gel liquid and placed into the pre-formed recesses in the mid-sole approximately two to three millimetres below the mid-sole surface.
  • a further strip 16b is then bonded into the recesses 20 above the capillary tube 19, the strips 16 acting as a constricting means for the tube 19 to provide a valve to regulate flow of liquid or gas between the containers 18.
  • the mid-sole is bonded with a shoe upper, insole and outer rubber sole to form a complete shoe.
  • the containers 18 and connecting tube 19 provide cushioned support along the complete pressure path shown in Fig. I and by operation of the valve, fluid in the forefoot container 18 can be trapped during motion to provide a better "push-off" platform.
  • the operation of the described embodiment is shown in Figs. Ill - V.
  • Fig. III. shows the foot in the heel impact position, in which impact pressure 21 is generated in the rear heel reservoir 18a, which forces the gas or liquid through the capillary tube 19 to the forefoot reservoir 18b.
  • Fig. IV. shows the foot in the roll position in which pressure applied along the outside of the foot 25 activates the valve to constrict the tube 19 which traps the fluid in the forefoot reservoir.
  • Fig. V. shows the foot in the push-off position with the load 27 on the front reservoir 18b which then pushes the gas/liquid back along the capillary tube 19 to the rear reservoir 18b.
  • Fig. VI, VII and VIII. illustrate the valve of the embodiment of the invention in more detail.
  • Injection moulded strips 16 and 16b have projecting ribs 34 which trap the gas/liquid contained within the capillary tube 19.
  • the ribs 34 of the strip 16a below the tube 19 are in register with those of the strip 16b above the capillary tube 19.
  • the tube 19 and strips 16 may be . formed as one piece. The assembly is mounted within the mid-sole medium 14
  • Fig. VIII. is a section through the plane III - III in Fig. VI. and shows in addition to the construction in Fig. VI. a shoe upper 41 which is integral with the board last 32.
  • a foam layer 37 is provided which gives a firmer base for the capillary tube assembly 16, 19 to compress.
  • Fig. VIIT. shows a sectional view as in Fig. VII. but with a load applied as would happen during the roll stage of the foot shown in Fig. IV., compressing the capillary tube 19 and effectively sealing the tube so that the gas/liquid forced into the forefoot reservoir cannot return.
  • the size and shape of the reservoirs 18 may be chosen to compensate for over pronation and supination, as illustrated in fig. IXa, b and c in which fig. IXa shows the reservoir shape for a sole for a normally pronating person, fig. IXb for a sole for a person who over pronates and fig. IXc for a person who over supinates.
  • the described embodiment aims to provide a constant cushioning of the foot pressure during walking or running and allows transfer of the displaced pressure increase of the reservoir in the heel after impact via a capillary tube to the front reservoir, increasing the push-off platform for a better "kick" at each stride.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A sole for a shoe is disclosed which includes a resilient mid-sole (14) in which first and second flexible containers (18) are inset at the heel and forefoot regions of the sole. The containers are filled with a fluid which provides a cushioning medium and a connecting tube (19) provides a balancing of fluid pressure between the containers (19) as well as cushioning along the pressure path of the foot on the outside edge thereof. The embodiment of the invention also provides a valve formed by ribbed members (16) which constrict tube (19) when pressure is applied to them to trap increase in fluid pressure transferred into the forefoot container on initial heel impact to give an extra platform of resistance under the forefoot for a better push-off and 'kick'.

Description

A SHOE AND A SOLE THEREFOR.
This invention relates to soles for shoes more particularly, but not. exclusively to athletic and sports shoes.
When running or walking, the natural pressure path of the foot in a normal pronating person commences with impact on the outside rear edge of the heel, the weight is then transferred along the outside edge of the foot as it rolls forward and then moves across the ball of the foot to end under the big toe ready for the push-off forward.
It has been proposed to provide cushioning for the impact for the heel only and also a combination of heel and forefoot. These cushioning systems have used various mediums for the cushioning, ranging from air or gas filled compressable sacs to synthetic compressable "memory" plastics. Although such proposals provide a degree of cushioning for the impact they lack a continual cushioning throughout the whole foot plant, roll and push-off along the pressure path. Furthermore, these proposals cannot provide both cushioning and for a substantial base under the forefoot in order to get a better push-off platform and "kick" to improve performance.
It is an object of the invention to alleviate these drawbacks
According to the invention there is provided a sole for a shoe comprising a first flexible container provided at a heel receiving region of the sole, a second flexible container provided at a forefoot receiving region of the sole, fluid disposed in the first and second containers and means for connecting the first and second containers together in fluid communication.
Preferred features of the invention are provided in Claims 2 - 14.
The embodiment of the invention described comprises a mid-sole of a sports shoe which incorporates compressable sacs moulded in an elastomeric material and filled with either a gas or liquid which provides a cushioning medium. These sacs are placed under the heel area and the forefoot and are embedded into the mid-sole just beneath the upper surface. The two sacs are interconnected via a capillary tube again formed from a compressable elastomeric material which follows the pressure path of the foot on the outside edge and provides a balancing pressure between the two sacs. The embodiment of the invention also provides for a valve, means comprising two members formed from a stiff but bendable plastics polymer
SUBS each with raised integral ridges at intervals along its length. These are set into position in a pre¬ formed recess above and below the capillary tube, just touching the tube's surface. The ridges face each other across the tube and act to seal the tube when the ridges are pushed together. The embodiment functions by transferring the increase in gas or liquid pressure created on the initial heel impact along the capillary tube into the forefoot sac and trapping this increase in pressure by operation of the valve means by the rolling foot to give an extra platform of resistance under the forefoot for a better push-off and "kick" . On push off the pressure created pushes the gas or liquid back along the capillary tube to the heel sac and the system pressure equalises throughout whilst the foot is off the ground ready for the next stride.
An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings in which:
Fig. I. shows the imprint of a normal pronating foot and pressure path when the foot is in contact with the ground during running or walking.
Fig. II. shows an exploded view of an embodiment of the invention applied to the mid-sole of a sports shoe.
Fig. III. shows the impact point of a foot when running or walking.
Fig. IV. shows the' pressure points along the foot during the roll stage of running or walking.
Fig. V. shows the push-off point under the toes during running or walking.
Fig. VI. is a section through the mid-sole of a sports shoe incorporating an embodiment of the invention.
Fig. VII. is a section through the mid-sole of a sport shoe incorporating an embodiment of the invention through the dotted line III - III shown in
Figure VI.
Fig. VIII. is a section as in Figure VII. with pressure applied. Fig. IX a, b &. c illustrate different shapes of reservoir to compensate for walking abnormalities.
Fig. I. shows the imprint of the foot during running or walking and indicates the load pressure path created during each stride. The load pressure 10 starts at the outside of the edge of the heel 10 on impact then travels along the outside portion of the foot 11 then crosses over the forefoot area 12 and finally finishes behind the big toe 13 on push-off.
Fig. II. shows an exploded view of the components of an embodiment of the invention as applied to a sports shoe. A mid-sole 14 which is made from a cellular
SUBS foam is provided with moulded recesses 15 which accept the components of the embodiment of the invention. An injection moulded plastic strip 16a with integral raised ridges is placed into the base of a connecting channel 17 between two main recesses 15. Two at least partially flexible sacs or reservoirs made from a plyable plastic blow moulded into containers 18a and 18b are provided. These two containers 18 are connected by a capillary tube 19 moulded in a plyable plastic. The tube may be of circular cross-section or ellipsoidal cross section, in which case the major axis of the ellipse lies between the sides of the channel 17. The complete unit being filled with a liquid or gas, for example, 750 CPS gel liquid and placed into the pre-formed recesses in the mid-sole approximately two to three millimetres below the mid-sole surface. A further strip 16b is then bonded into the recesses 20 above the capillary tube 19, the strips 16 acting as a constricting means for the tube 19 to provide a valve to regulate flow of liquid or gas between the containers 18. The mid-sole is bonded with a shoe upper, insole and outer rubber sole to form a complete shoe.
The containers 18 and connecting tube 19 provide cushioned support along the complete pressure path shown in Fig. I and by operation of the valve, fluid in the forefoot container 18 can be trapped during motion to provide a better "push-off" platform. The operation of the described embodiment is shown in Figs. Ill - V.
Fig. III. shows the foot in the heel impact position, in which impact pressure 21 is generated in the rear heel reservoir 18a, which forces the gas or liquid through the capillary tube 19 to the forefoot reservoir 18b. Fig. IV. shows the foot in the roll position in which pressure applied along the outside of the foot 25 activates the valve to constrict the tube 19 which traps the fluid in the forefoot reservoir. Fig. V. shows the foot in the push-off position with the load 27 on the front reservoir 18b which then pushes the gas/liquid back along the capillary tube 19 to the rear reservoir 18b.
Fig. VI, VII and VIII. illustrate the valve of the embodiment of the invention in more detail.
Injection moulded strips 16 and 16b have projecting ribs 34 which trap the gas/liquid contained within the capillary tube 19. The ribs 34 of the strip 16a below the tube 19 are in register with those of the strip 16b above the capillary tube 19. The tube 19 and strips 16 may be. formed as one piece. The assembly is mounted within the mid-sole medium 14
SU which is made from a cellular foam onto which an outer rubber sole 38 is bonded. The sole also includes a synthetic sponge inner sole 31 which is inserted into a last board 32. Fig. VIII. is a section through the plane III - III in Fig. VI. and shows in addition to the construction in Fig. VI. a shoe upper 41 which is integral with the board last 32. At the base of the channel 17, a foam layer 37 is provided which gives a firmer base for the capillary tube assembly 16, 19 to compress. Fig. VIIT. shows a sectional view as in Fig. VII. but with a load applied as would happen during the roll stage of the foot shown in Fig. IV., compressing the capillary tube 19 and effectively sealing the tube so that the gas/liquid forced into the forefoot reservoir cannot return.
The size and shape of the reservoirs 18 may be chosen to compensate for over pronation and supination, as illustrated in fig. IXa, b and c in which fig. IXa shows the reservoir shape for a sole for a normally pronating person, fig. IXb for a sole for a person who over pronates and fig. IXc for a person who over supinates.
The described embodiment aims to provide a constant cushioning of the foot pressure during walking or running and allows transfer of the displaced pressure increase of the reservoir in the heel after impact via a capillary tube to the front reservoir, increasing the push-off platform for a better "kick" at each stride.
Numerous variations and modifications to the illustrated construction will readily occur to the reader who is skilled in the art within the scope of the present invention.
SUBSTIT

Claims

1. A sole for a shoe comprising: a first flexible container provided at a heel receiving region of the sole, a. second flexible container provided at a forefoot receiving region of the sole, fluid disposed in the first and second containers; and means for connecting the first and second containers together in fluid communication.
2. A sole as claimed in Claim 1 wherein the connecting means is flexible.
3. A sole as claimed in Claim 2 wherein the connecting means is formed from a resilient tube.
4. A sole as claimed in Claim 2 or Claim 3 wherein the connecting means is provided at a foot outer edge receiving region of the sole.
5. A sole as claimed in claim 1, further comprising valve means for regulating flow of fluid between the containers.
6. A sole as claimed in Claim 5 wherein the connecting means is flexible and the valve means comprises means for constricting the connecting means.
7. A sole as claimed in Claim 6 wherein the connecting means is provided at a foot outer edge receiving region of the sole.
8. A sole as claimed in Claim 7 wherein the constricting means comprises at least one ribbed member disposed adjacent the connecting means.
9. A sole as claimed in Claim 8 wherein the constricting means comprises a further said ribbed member, the ribbed members being disposed on opposed sides of the connecting means.
10. A sole as claimed in Claim 9 wherein the opposed ribs of the ribbed members are in register with one another.
11. A sole as claimed in any one of the preceding claims wherein the containers and connecting means are inset in a resilient mid-sole.
12. A sole as claimed in Claim 11 wherein the connecting means is disposed in a slot in the
SUBSTITUT mid-sole and a support of higher resilience than the mid-sole is provided at the base of the slot.
13. A sole as claimed in any one of the preceding claims wherein the second flexible container extends across the sole and tapers from one side of the sole to the other.
14. A shoe including a sole as claimed in any one of the preceding claims.
15. A shoe as claimed in Claim 13 being a sport's shoe.
PCT/GB1991/000740 1990-05-09 1991-05-09 A shoe and a sole therefor WO1991016831A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9010336.7 1990-05-09
GB909010336A GB9010336D0 (en) 1990-05-09 1990-05-09 A sports shoe

Publications (1)

Publication Number Publication Date
WO1991016831A1 true WO1991016831A1 (en) 1991-11-14

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ID=10675657

Family Applications (1)

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PCT/GB1991/000740 WO1991016831A1 (en) 1990-05-09 1991-05-09 A shoe and a sole therefor

Country Status (3)

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AU (1) AU7892391A (en)
GB (1) GB9010336D0 (en)
WO (1) WO1991016831A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5313717A (en) * 1991-12-20 1994-05-24 Converse Inc. Reactive energy fluid filled apparatus providing cushioning, support, stability and a custom fit in a shoe
US5406719A (en) * 1991-11-01 1995-04-18 Nike, Inc. Shoe having adjustable cushioning system
WO1995013718A1 (en) * 1993-11-16 1995-05-26 Engros-Schuhhaus Ag Shoe sole
WO1995020332A1 (en) * 1994-01-26 1995-08-03 Reebok International Ltd. Cushioning member for an article of footwear
US5706589A (en) * 1996-06-13 1998-01-13 Marc; Michel Energy managing shoe sole construction
WO1998014085A1 (en) * 1996-10-02 1998-04-09 Johann Neuner Metalltechnik-Apparatebau Shoe sole
US5771606A (en) * 1994-10-14 1998-06-30 Reebok International Ltd. Support and cushioning system for an article of footwear
US5894687A (en) * 1997-06-18 1999-04-20 Gnan-Jang Plastics Co., Ltd. Shoe pad having massaging effect
US5896681A (en) * 1997-02-03 1999-04-27 Chan Jang Plastics Co., Ltd. Sole pad with shock-absorbing and massaging effect
US5950332A (en) * 1997-08-28 1999-09-14 Lain; Cheng Kung Fluid circulating cushioned insole
US6354020B1 (en) 1999-09-16 2002-03-12 Reebok International Ltd. Support and cushioning system for an article of footwear
US6453577B1 (en) 1996-02-09 2002-09-24 Reebok International Ltd. Support and cushioning system for an article of footwear
US6505420B1 (en) 1996-02-09 2003-01-14 Reebok International Ltd. Cushioning member for an article of footwear
US6745499B2 (en) 2002-05-24 2004-06-08 Reebok International Ltd. Shoe sole having a resilient insert
US6854198B2 (en) * 1996-05-29 2005-02-15 Jeffrey S. Brooks, Inc. Footwear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2413893A1 (en) * 1978-01-05 1979-08-03 Will Peter Training or exercise shoe sole construction - has two linked cavities with resilient upper wall responding to foot movement
FR2452889A1 (en) * 1979-04-03 1980-10-31 Reber Walter DEVICE FOR FACILITATING THE LOCOMOTION OF A MAN MOVING ON FOOT ON THE GROUND
EP0062622A2 (en) * 1981-04-02 1982-10-13 Lars Gustaf Birger Peterson Shoe sole construction
GB2114425A (en) * 1982-02-05 1983-08-24 Clarks Ltd Sole units for footwear

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2413893A1 (en) * 1978-01-05 1979-08-03 Will Peter Training or exercise shoe sole construction - has two linked cavities with resilient upper wall responding to foot movement
FR2452889A1 (en) * 1979-04-03 1980-10-31 Reber Walter DEVICE FOR FACILITATING THE LOCOMOTION OF A MAN MOVING ON FOOT ON THE GROUND
EP0062622A2 (en) * 1981-04-02 1982-10-13 Lars Gustaf Birger Peterson Shoe sole construction
GB2114425A (en) * 1982-02-05 1983-08-24 Clarks Ltd Sole units for footwear

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406719A (en) * 1991-11-01 1995-04-18 Nike, Inc. Shoe having adjustable cushioning system
US5313717A (en) * 1991-12-20 1994-05-24 Converse Inc. Reactive energy fluid filled apparatus providing cushioning, support, stability and a custom fit in a shoe
WO1995013718A1 (en) * 1993-11-16 1995-05-26 Engros-Schuhhaus Ag Shoe sole
WO1995020332A1 (en) * 1994-01-26 1995-08-03 Reebok International Ltd. Cushioning member for an article of footwear
US5771606A (en) * 1994-10-14 1998-06-30 Reebok International Ltd. Support and cushioning system for an article of footwear
US6845573B2 (en) 1994-10-14 2005-01-25 Reebok International Ltd. Support and cushioning system for an article of footwear
US6453577B1 (en) 1996-02-09 2002-09-24 Reebok International Ltd. Support and cushioning system for an article of footwear
US6505420B1 (en) 1996-02-09 2003-01-14 Reebok International Ltd. Cushioning member for an article of footwear
US6854198B2 (en) * 1996-05-29 2005-02-15 Jeffrey S. Brooks, Inc. Footwear
US5706589A (en) * 1996-06-13 1998-01-13 Marc; Michel Energy managing shoe sole construction
WO1998014085A1 (en) * 1996-10-02 1998-04-09 Johann Neuner Metalltechnik-Apparatebau Shoe sole
US5896681A (en) * 1997-02-03 1999-04-27 Chan Jang Plastics Co., Ltd. Sole pad with shock-absorbing and massaging effect
US5894687A (en) * 1997-06-18 1999-04-20 Gnan-Jang Plastics Co., Ltd. Shoe pad having massaging effect
US5950332A (en) * 1997-08-28 1999-09-14 Lain; Cheng Kung Fluid circulating cushioned insole
US6354020B1 (en) 1999-09-16 2002-03-12 Reebok International Ltd. Support and cushioning system for an article of footwear
US6745499B2 (en) 2002-05-24 2004-06-08 Reebok International Ltd. Shoe sole having a resilient insert

Also Published As

Publication number Publication date
GB9010336D0 (en) 1990-06-27
AU7892391A (en) 1991-11-27

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