WO2012166500A1 - Système de relâchement de pression pour chaussure - Google Patents

Système de relâchement de pression pour chaussure Download PDF

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Publication number
WO2012166500A1
WO2012166500A1 PCT/US2012/039294 US2012039294W WO2012166500A1 WO 2012166500 A1 WO2012166500 A1 WO 2012166500A1 US 2012039294 W US2012039294 W US 2012039294W WO 2012166500 A1 WO2012166500 A1 WO 2012166500A1
Authority
WO
WIPO (PCT)
Prior art keywords
sockliner
foot
shoe sole
sock liner
wearer
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.)
Ceased
Application number
PCT/US2012/039294
Other languages
English (en)
Inventor
David L. Vattes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caleres Inc
Original Assignee
Brown Shoe Co Inc
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 Brown Shoe Co Inc filed Critical Brown Shoe Co Inc
Publication of WO2012166500A1 publication Critical patent/WO2012166500A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/141—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form having an anatomical or curved form
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/142—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the medial arch, i.e. under the navicular or cuneiform bones
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/144—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the heel, i.e. the calcaneus bone

Definitions

  • the present invention relates to a pressure relief system for footwear that relieves plantar pressures via an anatomical sock liner which is engineered with a shape designed to achieve a high amount of deflection when compressed without becoming stiff.
  • This invention improves upon the comfort benefits delivered in footwear by focusing on a specific comfort dimension: plantar pressure relief.
  • a shoe is designed utilizing a last having a shape and volume that reflect the thickness of an internal sock liner, and a shoe interior made specifically for inclusion of this sock liner.
  • the sock liner itself contains an anatomically shaped foot bed surface with a cupped heel, contoured arch, radiused forepart and beveled toe area.
  • the sock liner material specifications and thicknesses are engineered or "tuned" to have a high amount of deflection when compressed without getting "stiff.”
  • the sock liner of the present invention includes a raised area in the midfoot region and a recessed area located in the hind foot or heel region.
  • the raised area is positioned to underlie the medial arch of the wearer's foot and the recessed area is positioned to underlie the heel of the wearer's foot.
  • the recessed area is defined by the peripheral edges formed around the hind foot region from the medial side to the lateral side of the heel.
  • the peripheral edge in the hind foot region forms a raised portion where it wraps around the heel of the wearer's foot.
  • the anatomically shaped and formed sock liner reflects the natural shapes of the human foot. The shaped plantar surface topography maximizes surface contact with the wearer's foot and increases comfort.
  • the sock liner material dimensions, design and specifications are engineered through an analysis of: 1) the desired deflection ranges, which are generally between 40-70% of the overall thickness of the sock liner; 2) the target loading ranges being designed for active wearing occasions, which are generally between 30-70 pounds, depending on gender and/or foot size; 3) the physical properties of the materials to be used (as specified below); 4) the desired pressure range targets for various plantar areas of the foot, which are generally below 40 pounds per square inch; and 5) anatomical shapes that create additional surface contact with the foot.
  • the deflection of the sock liner is preferably approximately 25% while standing and approximately 50% while running or walking.
  • the exterior of the shoe can be designed for any wearing occasion and/or end use.
  • the shoe may be designed with less midsole thickness than conventional shoes, in order to compensate for added thickness of the sock liner.
  • the system can be applied to any type of footwear category or end use as long as there is adequate sockliner thickness available.
  • Athletic shoes running, training, walking
  • sandals work shoes (duty/service industries), and casual shoes may all incorporate such sock liners.
  • Consideration is given for the exterior shoe sole design to complement the functionality designed for this system, such as: anatomically correct flex location; and material thicknesses and specifications that do not contribute to inflexibility, thus increasing pressure against the foot's plantar surface by the poor shoe design/materials.
  • materials may include polyurethane, SEBS foam, EVA, rubber sponge, latex, and/or co-polymer blended foams.
  • the materials preferably have a hardness of between IOC and 70C on the Asker C scale, with a material density of between 0.05 g/cc and 0.60 g/cc.
  • the thickness of the sock liner (measured at the center of the heel and center of the forefoot - not wall heights) varies by shoe design. However, the thickness generally ranges from 5mm to 50mm at the heel center, and from 3mm to 35mm in the forefoot center.
  • the overall design of a sock liner according to the present invention should increase contact between the foot and sock liner surface - especially during weight bearing - preferably at or above 75% rate of surface contact between the foot and sock liner.
  • the sock liner also improves pressure re-distribution from peak pressure areas, and spreads the pressure across the entire plantar surface area such that preferably no single location experiences a pressure above 40psi. In so doing, cushioning and shock absorption protection should prevent stresses above 10 Gs.
  • the sock liner surface yields and deflects under the foot without a significant increase of hardness and stiffness of the sock liner, which could create discomfort.
  • Such deflection can also increase foot stimulation through more utilization of bones, tendons, muscles during foot-strike.
  • the deflection can also promote a wearer's natural gait/foot-strike during walking, by straightening the wearer's center of force trajectory during foot-strike.
  • a flexibility improvement may be realized where less foot force is required to bend a shoe across the foot's flex area. Preferably below about 5 pounds of force is required to bend flex the shoe at such flex areas.
  • the sock liners may be removable, and as noted above, either polyurethane or EVA materials may be utilized (both as 100% standalone sock liners, i.e., not combined).
  • non-removable sock liner foot beds may be utilized in an open sandal or other type of shoe.
  • Alternative embodiments may utilize: "gel" as either a shock absorber or comfort element on the sock liner; the addition of flex grooves on the bottom of the sock liner; a visible sock liner, either through a window of the upper or midsole; multiple foam types in one sock liner unit; a sockliner made via injection molding, compression molding, open-pouring or die-cut/cementing; a closed shoe with a non-removable sock liner; additives to provide anti-microbial, anti-hydrolysis, and/or anti-UV enhancements and/or to strengthen the cell structure; a sock liner which can be combined with an insole layer (above or below) to reduce thickness/weight and/or can be designed as a "midsole” unit that is dropped into a unit sole or laminated with an outsole layer in a stitch-out construction.
  • FIG. 1 is a three dimensional perspective view of a last, the sock liner of the present invention, and an outsole designed with a recess to receive the sock liner's added thickness.
  • FIG. 2 is a typical material "Force/Compression” chart which illustrates a typical relationship between force (in pounds) and percent deflection of the material.
  • FIGS. 3A and 3B are a bottom plan view and side elevational view, respectively, of an exemplary sock liner.
  • FIGS. 4A, 4B and 4C are schematics of a right elevational view, a top plan view and a left elevational view, respectively, of a sock liner according to the present invention.
  • FIGS. 5 A, 5B and 5B are cross sectional schematic views, taken along the horizontal lines of FIGS. 4A-4C at the ball, arch and heel of the sock liner, respectively.
  • FIG. 6A is an exemplary pressure test-image of a sock liner according to the present invention.
  • FIG. 6B is an exemplary pressure test image of a prior art sock liner.
  • a sock liner which improves comfort and can be built into any type of shoe.
  • a shoe will include an upper or last 5, the sock liner 10 and the midsole/outsole 20 ("outsole").
  • Outsole 20 is positioned on the underside of the shoe for engagement with a walking surface such as the ground, sidewalk, floor or other supporting surface.
  • the top surface of the outsole is shaped to conform to the bottom surface of the sock liner 10.
  • the thickness of outsole 20 may be less than conventional shoes in order to compensate for the added thickness of the sock liner 10.
  • the outsole 20 may be constructed of any suitable material for example, leather, elastomer, polymer, a composite thereof or the like depending upon the type of shoe desired.
  • the sock liner 10 and outsole 20 may be secured to one another using any suitable attachment means including cement, adhesives, glue, welt and direct attachment constructions
  • the foot of a human may be considered to have three regions: the forefoot region (area adjacent the toes), the midfoot region (area adjacent the arch), and the hind foot region (area adjacent the heel).
  • the sock liner 10 similarly includes three regions substantially underlying the above-referenced corresponding three regions of the wearer's foot: the forefoot region 16 of the sock liner 10, the midfoot region 14 of the sock liner 10, and the hind foot region 12 of the sock liner 10.
  • the ball of the foot is generally the area of the foot at the juncture between the metatarsal bones and the phalange bones.
  • the midfoot region 14 of sock liner 10 is raised to underlie the medial arch of the wearer's foot, while the hind foot region 12 is cupped to underlie the heel of the wearer's foot.
  • the hind foot region 12 is defined by the peripheral edges 13 formed around the hind foot region 12 from the medial side to the lateral side of the heel.
  • the peripheral edge 13 in the hind foot region 12 forms a raised portion where it wraps around the heel of the wearer's foot.
  • the forefoot region 16 includes a radiused forepart and a beveled toe area.
  • the anatomically shaped and formed sock liner is thereby designed to reflect the natural shapes of the human foot.
  • the shaped plantar surface topography maximizes surface contact with the wearer's foot and increases comfort.
  • the sock liner material specifications and thicknesses are engineered or “tuned” to have a high amount of deflection when compressed without getting “stiff.”
  • the sock liner 10 material dimensions, design and specifications are engineered through an analysis of: a) the desired deflection ranges, which are generally between 40-70% of the overall thickness of the sock liner and preferably about 25% while standing and about 50% while running or walking; b) the target loading ranges being designed for active wearing occasions, which are generally between 30-70 pounds, depending on gender and/or foot size; c) the physical properties of the materials to be used (as specified below); d) the desired pressure range targets for various plantar areas of the foot, which are generally below 40 pounds per square inch; and e) anatomical shapes that create additional surface contact with the foot.
  • FIG. 2 An exemplary chart of the relationship between pressures exerted on the sock liner 10 as compared to the deflection of the sock liner 10 is shown in FIG. 2. As can be seen, as the force (in pounds per square inch) increases, so too does the deflection of the sock liner 10. At about 70 psi, which as noted above is at the high end of the target loading range for an active wearing occasion (e.g., running), the deflection is shown to be approximately 55% - close to the desired 50% deflection discussed above. Further, at about 25 psi, which is below the low end target loading range for an active wearing occasion (e.g., walking or standing), the deflection is close to 25% - approximately the desired deflection discussed above.
  • FIG. 2 illustrates the measured characteristics of an exemplary material of an exemplary thickness. Other materials would need to be “tuned” to determine the proper thicknesses for achieving improved pressure relief.
  • materials for the sock liner 10 may include polyurethane, SEBS foam, EVA, rubber sponge, latex, and/or co-polymer blended foams.
  • the materials preferably have a hardness of between IOC and 70C on the Asker C scale, with a material density of between 0.05 g/cc and 0.60 g/cc.
  • the thickness of the sock liner 10 (measured at the center of the heel 12 and center of the forefoot 16 - not wall heights) varies by shoe design. However, the thickness generally ranges from 5mm to 50mm at the heel center 12, and from 3mm to 35mm in the forefoot center 16.
  • the overall design of a sock liner 10 should increase contact between the foot and sock liner 10 - especially during weight bearing - preferably at or above 75% rate of surface contact between the foot and sock liner 10.
  • the sock liner 10 also improves pressure re-distribution from peak pressure areas, and spreads the pressure across the entire plantar surface area such that preferably no single location experiences a pressure above 40psi. In so doing, cushioning and shock absorption protection should prevent stresses above 10 Gs. This can be seen in FIG. 6A as compared to 6B.
  • FIG. 6A As compared to 6B.
  • FIG. 6 A illustrates an exemplary foot pressure diagram of a foot utilizing the sock liner 10 of the present invention, in which the hind foot portion 12 and forefoot portion 16 of the foot experience a pressure level below the target threshold of 40 psi (shown by the blue image color).
  • FIG. 6B which illustrates a prior art foot pressure diagram without an improved sock liner 10
  • the forefoot region 16, and the hind foot region 12 experience a pressure level well above (2-3 times) the target threshold of 40 psi (shown by the red image color).
  • the sock liners 10 may be removable, and as noted above, or they may be formed from polyurethane or EVA materials (both as 100% standalone sock liners, i.e., not combined). Alternatively, non-removable sock liner 10 foot beds may be utilized in an open sandal or other type of shoe.
  • Alternative embodiments may utilize: "gel" as either a shock absorber or comfort element on the sock liner 10; the addition of flex grooves on the bottom of the sock liner 10; a visible sock liner 10, either through a window of the upper or outsole 20; multiple foam types in one sock liner unit 10; a sock liner 10 made via injection molding, compression molding, open-pouring or die-cut/cementing; a closed shoe with a nonremovable sock liner 10; additives to provide anti-microbial, anti-hydrolysis, and/or anti-UV enhancements and/or to strengthen the cell structure; or a sock liner 10 which can be combined with an insole layer (above or below) to reduce thickness/weight and/or can be designed as a "midsole" unit that is dropped into a unit sole or laminated with an outsole layer in a stitch-out construction.
  • gel as either a shock absorber or comfort element on the sock liner 10
  • the overall dimensions of the present sockliner 10 and outsole 20 as well as the specific shape and configuration of the various sections thereof are also subject to wide variations and may be sized and shaped into a wide variety of different sizes and

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention porte sur une chaussure ayant une forme, qui comprend une forme et un volume qui reflètent l'épaisseur d'une doublure interne, et un intérieur de chaussure réalisé de façon spécifique pour l'inclusion de la doublure. La doublure elle-même comprend une surface de semelle de forme anatomique avec un talon en coupe, une voûte avec un contour, un avant avec un rayon et une zone d'orteils en biseau. Les spécifications et les épaisseurs du matériau de doublure sont conçues ou ajustées de façon à avoir une ampleur d'infléchissement élevée lorsqu'il est comprimé sans devenir rigide.
PCT/US2012/039294 2011-05-28 2012-05-24 Système de relâchement de pression pour chaussure Ceased WO2012166500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161491190P 2011-05-28 2011-05-28
US61/491,190 2011-05-28

Publications (1)

Publication Number Publication Date
WO2012166500A1 true WO2012166500A1 (fr) 2012-12-06

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PCT/US2012/039294 Ceased WO2012166500A1 (fr) 2011-05-28 2012-05-24 Système de relâchement de pression pour chaussure

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US (1) US20120317845A1 (fr)
WO (1) WO2012166500A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN108741410A (zh) * 2018-05-04 2018-11-06 东莞市顺风运动器材有限公司 一种袜子鞋垫二合一鞋垫
CN110818850A (zh) * 2019-12-06 2020-02-21 威海市华纳塑胶有限公司 一种相容剂及其合成方法以及含该相容剂的tpu鞋材底料及其合成方法

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WO2014066548A1 (fr) * 2012-10-23 2014-05-01 Joint Venture: Titan Industries, Inc.;Carol De Leon, And International Fashion Royalty Inc. Semelle composite et ensemble fond
DE102014107751A1 (de) * 2014-06-03 2015-12-03 Deeluxe Sportartikel Handels Gmbh Schuh, insbesondere Laufschuh
US10947371B2 (en) 2016-03-15 2021-03-16 Nike, Inc. Foam compositions and uses thereof
US10441028B2 (en) * 2016-06-20 2019-10-15 Fuerst Group, Inc. Variable-density soles for articles of footwear
CN109310181B (zh) * 2016-06-23 2022-02-01 达科国际股份有限公司 具有多密度包覆成型的医疗鞋
EP3474696B1 (fr) 2016-06-23 2020-11-18 Darco International Inc. Chaussure médicale ayant une pluralité de saillies de semelle d'usure
US11344080B2 (en) 2016-11-14 2022-05-31 Deckers Outdoor Corporation Footwear including a stabilizing sole
US10561199B2 (en) 2016-11-14 2020-02-18 Deckers Outdoor Corporation Footwear including a stabilizing sole
CN112533506B (zh) 2018-06-04 2023-03-28 耐克创新有限合伙公司 两部分鞋底结构及其用途
WO2020117829A1 (fr) 2018-12-03 2020-06-11 Nike Innovate C.V. Compositions de mousse ayant un retour d'énergie élevé ayant une résistance à l'abrasion améliorée et leurs utilisations
CN111838877B (zh) * 2020-05-20 2022-12-13 佛山市常乐鞋业有限公司 一种可缓解足部压力的折叠女跟鞋
US20220167709A1 (en) * 2020-08-05 2022-06-02 Oblique Shoes Corporation Footwear
CN118104899B (zh) * 2024-04-12 2025-11-18 安踏（中国）有限公司 一种鞋底和鞋及其鞋的制备方法

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US4155180A (en) * 1975-12-29 1979-05-22 American Fitness, Inc. Footwear for more efficient running
US4800657A (en) * 1981-11-25 1989-01-31 Brown Dennis N Variably adjustable shoe insert
US4597196A (en) * 1984-08-24 1986-07-01 Northwest Podiatric Laboratories, Inc. Orthotic insert and method or making of the same
US20020043005A1 (en) * 2000-10-17 2002-04-18 Blackburn Ron L. Protective, orthotic insert for footwear

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Publication number Priority date Publication date Assignee Title
CN108741410A (zh) * 2018-05-04 2018-11-06 东莞市顺风运动器材有限公司 一种袜子鞋垫二合一鞋垫
CN110818850A (zh) * 2019-12-06 2020-02-21 威海市华纳塑胶有限公司 一种相容剂及其合成方法以及含该相容剂的tpu鞋材底料及其合成方法

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