WO1990006699A1 - Element rapporte pour chaussures d'athletisme - Google Patents

Element rapporte pour chaussures d'athletisme Download PDF

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Publication number
WO1990006699A1
WO1990006699A1 PCT/US1989/005583 US8905583W WO9006699A1 WO 1990006699 A1 WO1990006699 A1 WO 1990006699A1 US 8905583 W US8905583 W US 8905583W WO 9006699 A1 WO9006699 A1 WO 9006699A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert member
peaks
valleys
row
sheet
Prior art date
Application number
PCT/US1989/005583
Other languages
English (en)
Inventor
James K. Tong
David Cousin
Dan Richard
Original Assignee
Avia Group International, 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 Avia Group International, Inc. filed Critical Avia Group International, Inc.
Priority to DE68926964T priority Critical patent/DE68926964T2/de
Priority to EP90900582A priority patent/EP0483145B1/fr
Publication of WO1990006699A1 publication Critical patent/WO1990006699A1/fr

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
    • A43B13/181—Resiliency achieved by the structure of the sole

Definitions

  • This invention relates generally to athletic shoes, and more particularly to an apparatus and method for providing increased durability and rebound in athletic shoes.
  • the first broad category utilizes different materials and configurations of the midsole to improve cushioning as well as provide effective foot control.
  • materials of different hardnesses may be used to provide cushioning and foot control, or a variety of devices may be encapsulated in a midsole to increase cushioning.
  • This type of shoe has the disadvantage of a short life due to breakdown of the materials used to form the midsole. Since many shoes use only ethyl vinyl acetate (EVA) or polyurethane (PU) for cushioning, the cells of these foams have a tendency to break down and thus virtually eliminating the usefulness of the midsole. This in turn can cause serious injuries.
  • EVA ethyl vinyl acetate
  • PU polyurethane
  • the second category of device utilizes pneumatic devices within the midsole. An example of this is taught in U.S. Patent No.
  • the McDonald device is an elastic air filled cushioning device which is incor ⁇ porated into the heel of a shoe to provide cushioning.
  • a similar device is taught in U.S. Patent o. 1,498,838 to Harrison Jr. which uses a number of tubes which lie within the midsole. These tubes are inflated by a valve to maintain a pressure above ambient.
  • the tubes in the Harrison Jr. device are made of a flexible inelastic material.
  • the disadvantages of encapsulating gas within the midsole of a shoe are numerous. It is exceedingly difficult and costly to encapsulate gas in a material. It is much easier, for example, to cut a piece of conventional midsole material such as ethyl vinyl acetate (EVA) to a desired specification than to make a container which retains pressurized air or other gas.
  • EVA ethyl vinyl acetate
  • Stability is another problem with shoes which encapsulate gas within the midsole.
  • encapsulated gas midsoles are oftentimes too soft to give proper support.
  • the third broad category of devices which are intended to increase the cushioning of a shoe include outsole configura ⁇ tions.
  • An outsole is typically made of material such as rubber, polyurethane (PU), thermoplastic rubber (e.g., EVA) and the like. These materials are chosen for outsoles because they are wear resistant. Typically, these materials have fairly good memory characteristics. That is, if the outsole material is deformed either by compression or bending forces, it tends to return to its original shape.
  • an outsole which has a plurality of lugs or levers which extend from the periphery of the bottom of the outsole. These lugs are designed to redirect vertical forces on the outsole so that the forces have at least a horizontal component thereby reducing the stresses on a runner.
  • the Stubblefield patent provides a shoe which provides both cushioning and stability.
  • the present invention is an insert member for use in an athletic shoe.
  • the insert member is made of a sheet of material which tends to return to its original shape when bent and is substantially of uniform thickness, having undulations which form a plurality of parallel rows of peaks and valleys. Each row of peaks and valleys is out of phase from an adjacent row of peaks and valleys. In another aspect of the invention, each row of "valleys" is 180° out of phase from the adjacent row of peaks and valleys.
  • the sheet forming the insert member is made of a material such as a thermoplastic polymer.
  • the insert member comprises a plurality of substantially circular peaks and valleys.
  • Figure 1 is a bottom plan view of an athletic shoe which has the invention incorporated therein;
  • Figure 2 is a left elevational view of the sole of an athletic shoe which incorporates the invention
  • Figure 3 is a cross-sectional view of Figure 1 cut along line III-III;
  • Figure 4 is a cross-sectional view of Figure 1 cut along line IV-IV;
  • Figure 5 is an exploded view of the components of one embodiment of the invention.
  • Figure 6 is a perspective view of a piece of material from which the insert member of the invention is made.
  • Figure 7 is a schematic view of one embodiment of the invention showing the component elements superimposed.
  • Figure 1 depicts a sole for an athletic shoe, designated generally as 10, which includes a number of component parts.
  • the sole 10 includes a midsole 12, which, like most athletic shoes, provides cushioning to the foot of a wearer.
  • the midsole 12 may be made of a material such as ethyl vinyl acetate (EVA) or polyurethane (PU) and may be formed from materials of differing densities.
  • EVA ethyl vinyl acetate
  • PU polyurethane
  • the medial side of an athletic shoe it is sometimes desirable for the medial side of an athletic shoe to be formed of a material having a higher density than that of the lateral side of the shoe. This is done in order to correct for certain biomechanical problems such as pronation.
  • many other midsole configurations may be used in conjunction with the invention.
  • the outsole 14 may be made of an abrasive resistant material such as rubber and includes a heel portion 16 which has a central heel portion 18 of the outsole 14 which may be in spaced relationship with the ground.
  • This relationship of the central heel portion 18 and peripheral portion of the outsole 14 is known generally as a cantilever outsole, an outsole orientation which is described in detail in U.S. Patent No. 4,372,058 to Stubblefield.
  • the heel portion 16 has a plurality of lugs 20 around the periphery thereof. These lugs 20 deflect outward upon the application of pressure onto the sole 10 and help to reduce shock to a wearer's foot upon impact with the ground.
  • a PU wrap member 28 is provided which is attached adhesively to the remaining portions of the outsole 14.
  • the PU wrap member 28 has a lateral extension 30 which helps to provide stability to the wearer's foot.
  • a medial extension 32 which is best seen in Figures 4 and 5. This midsole wrap helps provide stability by providing surfaces which tend to prevent excessive pronation or supination.
  • a conventional toe bumper 33 is used in conjunction with the wrap member 28, the medial extension 32 and lateral extension 30 may wrap over the bumper 33.
  • flexure grooves 34 are provided in the PU wrap member 28 in the metatarsal area. These help to provide bending of the sole in the area of the shoe where such bending is necessary in many athletic sports.
  • midsole 12 is provided with a heel component 36 which is made of a cushion ⁇ ing material such as polyurethane (PU). Also provided in the midsole 12 is a forefoot component 38.
  • the forefoot component 38 may include a forefoot foam 40 such as Ethyl Vinyl Acetate (EVA) or PU and may have a Shore C durometer hardness of approximately 50 or 60.
  • EVA Ethyl Vinyl Acetate
  • Forefoot foam 40 provides cushioning to the forefoot of a wearer.
  • the invention is the use of a insert member 42 in conjunction with other component parts of an athletic shoe.
  • Figures 3-6 the insert member 42 used to practice the invention is illustrated; Figures 3-4 show the insert member 42 in cross-section in conjunction with other components of an athletic shoe; Figure 5 illustrates an exploded view of an athletic shoe embodying the invention; and Figure 6 depicts a sheet of material from which an insert member 42 may be formed. Even though Figure 6 is a sheet of material from which an insert member 42 is formed, it will be described below as if it were an insert member 42 since the only difference between the material shown in Figure 6 and an insert member is that Figure 6 shows material of arbitrary dimensions.
  • the geometric configuration of the insert member 42 gives the midsole of an athletic shoe increase life because much of the input energy is absorbed by the insert member rather than by midsole material. In addition, the midsole may be lighter because less midsole material is necessary. Further, the midsole will return quickly to its relaxed configuration.
  • the insert member 42 is an undulating sheet of material which has a uniform local thickness. This thickness (t) is typically about 1/32" but may be tailored to a particular use. Naturally, the thickness may be greater or less than 1/32" when used in the forefoot. For example, if the invention were to be used in a location other than the forefoot, it may need to have a greater or lesser thickness. Similarly, a non- uniform thickness may be used if different responses are desired for different portions of the insert member.
  • the overall shape of the insert member 42 may, but need not, be substantially rectangular in shape. In the embodiment of the invention shown in Figure 5, insert member 42 approximates a rectangle with two rounded and two hard corners.
  • insert member 42 The precise overall shape of insert member 42 is not critical and it should be understood that the shape of insert member 42 can be tailored as desired.
  • the material forming the insert member has undulations which form a plurality of rows of substan ⁇ tially circular peaks and valleys.
  • a first row, designated as 44 in Figure 6, has a cross-section which is substantially sinusoidal. In this configuration, the magnitude of the amplitude of the peaks 46 and valleys 48 is the same and the wavelength of the sinusoidal cross-section is constant. These two geometric characteristics (constant amplitude and constant wavelength) are not critical to the invention and it is anticipated that a number of geometries could be used to practice the invention.
  • the spacing between peaks 46 in row 44 is approximately 11/16 inch and the magnitude of the amplitude of each peak and valley is approximately 3/32 inch. In other words the thickness of the insert member measured from the maximum peak to the minimum valley is 3/16 inch. Naturally, these values can vary depending on whether the insert 42 is to be used in, for example, the heel of an athletic shoe instead of in the forefoot.
  • a second row, designated as 50 in Figure 6, is positioned so that the first row 44 and the second row 50 are juxtaposed at a distance of one-half the distance between adjacent peaks 46 of the first row 44.
  • the second row 50 similarly has peaks 52 and valleys 54.
  • the second row is identical to the first row 44 except that the second row 50 is 180° out of phase from the first row 44.
  • Every second row forming the insert member is in phase and all rows are 180° out of phase with its adjacent row.
  • Another way of describing the geometry of the insert member is to say that it is formed from a continuous quincunx arrangement. That is, the circular peaks of the insert member are arranged in a quincunx, the four sides of which are the sides of the adjacent quincunx arrangements. There are circular valleys formed between each of the circular peaks forming the corners of each quincunx arrangement.
  • a frame is provided for the insert member 42 by the forefoot foam 40.
  • a cutout is provided in which the insert 42 is positioned.
  • the insert member 42 can be made of many different materials as long as the material or combination of materials forming the insert 42 has good memory characteris ⁇ tics, is durable, and- provides cushioning.
  • good memory characteristics it is meant that the material forming the insert, when deflected tends to return to its original configuration. This return to its original configuration should take place in a time frame which is less than the average period between deflections. For example, in a running shoe, the insert member 42 will deflect each time the foot contacts the ground in the region of the insert member 42. Therefore, it is important that when pressure on the insert member 42 is no longer exerted, the insert return to its original configuration prior to the next time the foot contacts the ground in the region of the insert member 42.
  • the insert member 42 In addition to having good memory characteristics the insert member 42 must be durable. It must be able to constantly withstand the cycling from a mode in which a force is exerted on the insert to a mode in which the insert is relaxed. In addition, the insert 42 must be made of a material which resists cracking due to either impact forces or due to fatigue; and must not have varying properties as a function of change of ambient conditions such as temperature and pressure.
  • One commercially available material which had these characteristics is Hytrel which is the registered trademark of a material which is manufactured by E.I. DuPont de Nemours. Hytrel is a chemically stable, semi-crystalline, fully polymerized, high molecular weight, thermoplastic poly- ester elastomer having alternate amorphous and crystalline chains.
  • Hytrel is selected as a material because of its ability to store energy upon impact and return that energy to the source.
  • Hytrel 4056 having a Shore C durometer hardness of 40
  • Hytrel 4074 also having a Shore C durometer hardness of 40
  • Hytrel 8236 having a Shore C durometer hardness of 82, are three materials (all DuPont) which may be used to practice the invention. It should be noted however that many other materials may be used to practice the invention.
  • the insert member 42 is generally positioned in the forefoot of an athletic shoe to improve the cushioning characteristics of the midsole by providing good memory characteristics and by returning energy to the midsole.
  • the insert member 42 when used in conjunction with forefoot foam 40, is generally positioned within forefoot cavity 56 ( Figure 5). This forefoot cavity 56 may extend completely through the forefoot foam 40 or may only be an indentation in the forefoot foam 40.
  • a cover 57 may be placed above insert 42.
  • the insert member 42 is cemented in place with a thin film of cement which attaches the crests of the peaks to the other midsole components such as the forefoot foam 40 (see point A, Figure 3) or the outsole 14 (see point B, Figure 3).
  • Figure 5 is an exploded view of an athletic shoe embodying the present invention.
  • the sole 10 has an outsole 14.
  • Above outsole 14 is a midsole having a heel component 36 and a forefoot component 38.
  • the forefoot component is made up of a forefoot foam 40 having a forefoot cavity 56 in which an insert member 42 as previously described is inserted.
  • Figure 7 shows a superimposition of some of the component parts of an athletic shoe embodying the invention.
  • Line 62 shows the interface between heel component 36 and forefoot component 38 (in a preferred embodiment, the interface between the PU and EVA which makes up the midsole); lines 64a and 64b show the outline of the PU wrap member 28; l ne 66 is the perimeter of insert member 42; and line 68 shows the rearmost boundary of cover 57.
  • the insert member may be completely encapsulated within the midsole so that there are no air spaces between the insert and the midsole.
  • the insert member may be partially encapsulated.
  • one side of the insert member may have midsole material filling the valleys in that side.

Landscapes

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

Abstract

L'élément rapporté décrit (42), qui est conçu pour être utilisé dans une chaussure d'athlétisme (10), est fabriqué à partir d'un matériau qui comporte plusieurs rangées de bosses (52) et de creux (54) alternés.
PCT/US1989/005583 1988-12-14 1989-12-13 Element rapporte pour chaussures d'athletisme WO1990006699A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE68926964T DE68926964T2 (de) 1988-12-14 1989-12-13 Einlageglied zur verwendung bei athletikschuhen
EP90900582A EP0483145B1 (fr) 1988-12-14 1989-12-13 Element rapporte pour chaussures d'athletisme

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28434388A 1988-12-14 1988-12-14
US284,343 1988-12-14

Publications (1)

Publication Number Publication Date
WO1990006699A1 true WO1990006699A1 (fr) 1990-06-28

Family

ID=23089840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/005583 WO1990006699A1 (fr) 1988-12-14 1989-12-13 Element rapporte pour chaussures d'athletisme

Country Status (5)

Country Link
EP (1) EP0483145B1 (fr)
JP (1) JPH04503614A (fr)
CA (1) CA2005350A1 (fr)
DE (1) DE68926964T2 (fr)
WO (1) WO1990006699A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339103A1 (de) * 1993-11-16 1995-05-18 Engros Schuhhaus Ag Schuhsohle
EP0838170A3 (fr) * 1996-08-30 1999-01-20 Fila U.S.A., Inc. Système d'amortissement pour chaussure
WO2000074515A1 (fr) * 1999-06-08 2000-12-14 Ahrens Hans Joachim Chaussure et dispositif d'amortissement a lames pour chaussure
US6205681B1 (en) 1998-06-08 2001-03-27 Mizuno Corporation Athletic shoe midsole design and construction
US6219939B1 (en) * 1997-04-18 2001-04-24 Mizuno Corporation Athletic shoe midsole design and construction
US6219940B1 (en) 1998-05-22 2001-04-24 Mizuno Corporation Athletic shoe midsole design and construction
US6295741B1 (en) * 1999-04-16 2001-10-02 Mizuno Corporation Athletic shoe sole design and construction
US6311414B1 (en) 1998-06-25 2001-11-06 Mizuno Corporation Athletic shoe midsole design and construction
US6314664B1 (en) * 1997-04-18 2001-11-13 Mizuno Corporation Athletic shoe midsole design and construction
US6389713B1 (en) 1998-10-02 2002-05-21 Mizuno Corporation Athletic shoe midsole design and construction
WO2003056963A1 (fr) * 2002-01-04 2003-07-17 Shoe Spring, Inc. Chaussure résistante aux chocs
US6625905B2 (en) 2001-06-28 2003-09-30 Mizuno Corporation Midsole structure of athletic shoe
US6647645B2 (en) 2001-06-28 2003-11-18 Mizuno Corporation Midsole structure of athletic shoe
US6862821B2 (en) * 2001-06-11 2005-03-08 Calzaturificio S.C.A.R.P.A. S.P.A. Sports shoe sole
US7966751B2 (en) 2001-04-27 2011-06-28 Exten.S Sole with extensible structure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK174667B1 (da) * 2000-08-09 2003-08-18 Ecco Sko As Skomellemsål
JP3934039B2 (ja) * 2002-11-27 2007-06-20 美津濃株式会社 シューズのアウトソール構造
JP6708595B2 (ja) 2017-09-19 2020-06-10 美津濃株式会社 スポーツシューズのソール構造体

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Publication number Priority date Publication date Assignee Title
US1128220A (en) * 1907-05-01 1915-02-09 George R Stetson Heel-cushion or sock-sole for shoes.
DE416723C (de) * 1925-07-23 Rudolf Theel Zwischensohle mit abgedeckten Luftpolstern
US2090881A (en) * 1936-04-20 1937-08-24 Wilmer S Wilson Footwear
US4364188A (en) * 1980-10-06 1982-12-21 Wolverine World Wide, Inc. Running shoe with rear stabilization means
US4432099A (en) * 1982-07-09 1984-02-21 Gentex Corporation Individually fitted helmet liner
US4733483A (en) * 1987-02-20 1988-03-29 Autry Industries, Inc. Custom midsole
US4768295A (en) * 1986-04-11 1988-09-06 Asics Corporation Sole
US4774774A (en) * 1986-05-22 1988-10-04 Allen Jr Freddie T Disc spring sole structure
US4794707A (en) * 1986-06-30 1989-01-03 Converse Inc. Shoe with internal dynamic rocker element
US4815221A (en) * 1987-02-06 1989-03-28 Reebok International Ltd. Shoe with energy control system
US4864737A (en) * 1988-07-14 1989-09-12 Hugo Marrello Shock absorbing device

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DE2446107A1 (de) * 1974-09-26 1976-04-08 Bayer Ag Aliphatische polycarbonate
US4243775A (en) * 1978-11-13 1981-01-06 American Cyanamid Company Synthetic polyester surgical articles
US4665136A (en) * 1986-04-07 1987-05-12 Air Products And Chemicals, Inc. Process for producing novel block alkylene polycarbonate copolymers
ES2053833T3 (es) * 1988-03-24 1994-08-01 American Cyanamid Co Recubrimiento bioabsorbible para un articulo quirurgico.

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE416723C (de) * 1925-07-23 Rudolf Theel Zwischensohle mit abgedeckten Luftpolstern
US1128220A (en) * 1907-05-01 1915-02-09 George R Stetson Heel-cushion or sock-sole for shoes.
US2090881A (en) * 1936-04-20 1937-08-24 Wilmer S Wilson Footwear
US4364188A (en) * 1980-10-06 1982-12-21 Wolverine World Wide, Inc. Running shoe with rear stabilization means
US4432099A (en) * 1982-07-09 1984-02-21 Gentex Corporation Individually fitted helmet liner
US4768295A (en) * 1986-04-11 1988-09-06 Asics Corporation Sole
US4774774A (en) * 1986-05-22 1988-10-04 Allen Jr Freddie T Disc spring sole structure
US4794707A (en) * 1986-06-30 1989-01-03 Converse Inc. Shoe with internal dynamic rocker element
US4815221A (en) * 1987-02-06 1989-03-28 Reebok International Ltd. Shoe with energy control system
US4733483A (en) * 1987-02-20 1988-03-29 Autry Industries, Inc. Custom midsole
US4864737A (en) * 1988-07-14 1989-09-12 Hugo Marrello Shock absorbing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0483145A4 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995013717A1 (fr) * 1993-11-16 1995-05-26 Engros-Schuhhaus Ag Semelle de chaussure
DE4339103C2 (de) * 1993-11-16 1998-07-02 Engros Schuhhaus Ag Schuhsohle
DE4339103A1 (de) * 1993-11-16 1995-05-18 Engros Schuhhaus Ag Schuhsohle
EP0838170A3 (fr) * 1996-08-30 1999-01-20 Fila U.S.A., Inc. Système d'amortissement pour chaussure
US6401365B2 (en) * 1997-04-18 2002-06-11 Mizuno Corporation Athletic shoe midsole design and construction
US6219939B1 (en) * 1997-04-18 2001-04-24 Mizuno Corporation Athletic shoe midsole design and construction
US6314664B1 (en) * 1997-04-18 2001-11-13 Mizuno Corporation Athletic shoe midsole design and construction
US6219940B1 (en) 1998-05-22 2001-04-24 Mizuno Corporation Athletic shoe midsole design and construction
US6205681B1 (en) 1998-06-08 2001-03-27 Mizuno Corporation Athletic shoe midsole design and construction
US6311414B1 (en) 1998-06-25 2001-11-06 Mizuno Corporation Athletic shoe midsole design and construction
US6389713B1 (en) 1998-10-02 2002-05-21 Mizuno Corporation Athletic shoe midsole design and construction
US6295741B1 (en) * 1999-04-16 2001-10-02 Mizuno Corporation Athletic shoe sole design and construction
WO2000074515A1 (fr) * 1999-06-08 2000-12-14 Ahrens Hans Joachim Chaussure et dispositif d'amortissement a lames pour chaussure
US7966751B2 (en) 2001-04-27 2011-06-28 Exten.S Sole with extensible structure
US6862821B2 (en) * 2001-06-11 2005-03-08 Calzaturificio S.C.A.R.P.A. S.P.A. Sports shoe sole
US6625905B2 (en) 2001-06-28 2003-09-30 Mizuno Corporation Midsole structure of athletic shoe
US6647645B2 (en) 2001-06-28 2003-11-18 Mizuno Corporation Midsole structure of athletic shoe
WO2003056963A1 (fr) * 2002-01-04 2003-07-17 Shoe Spring, Inc. Chaussure résistante aux chocs

Also Published As

Publication number Publication date
EP0483145A1 (fr) 1992-05-06
DE68926964T2 (de) 1997-03-13
DE68926964D1 (de) 1996-09-19
JPH04503614A (ja) 1992-07-02
CA2005350A1 (fr) 1990-06-14
EP0483145B1 (fr) 1996-08-14
EP0483145A4 (en) 1992-07-08

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