EP2059142B1 - Structure de semelle pour chaussure - Google Patents

Structure de semelle pour chaussure Download PDF

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Publication number
EP2059142B1
EP2059142B1 EP06776935A EP06776935A EP2059142B1 EP 2059142 B1 EP2059142 B1 EP 2059142B1 EP 06776935 A EP06776935 A EP 06776935A EP 06776935 A EP06776935 A EP 06776935A EP 2059142 B1 EP2059142 B1 EP 2059142B1
Authority
EP
European Patent Office
Prior art keywords
cavity
sole
sole body
openings
structure according
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.)
Not-in-force
Application number
EP06776935A
Other languages
German (de)
English (en)
Other versions
EP2059142A1 (fr
Inventor
Armando Cietto
Wilhelm Möhlmann
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.)
Atmos Airwalk AG
Original Assignee
Atmos Airwalk AG
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 Atmos Airwalk AG filed Critical Atmos Airwalk AG
Publication of EP2059142A1 publication Critical patent/EP2059142A1/fr
Application granted granted Critical
Publication of EP2059142B1 publication Critical patent/EP2059142B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/06—Footwear with health or hygienic arrangements ventilated
    • A43B7/08—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures
    • 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/12—Special watertight footwear
    • A43B7/125—Special watertight footwear provided with a vapour permeable member, e.g. a membrane

Definitions

  • the present invention relates to a sole for footwear which allows air circulation in the shoe and thus directly to the foot at each step of the running movement.
  • shoes are known that are equipped in the sole with devices that promote air circulation in the shoe, which reduces the internal moisture and thus improves the user's foot comfort.
  • This known shoe type generally provides mechanical parts, such as hollow connections and valves, which are housed interconnected in the sole interior.
  • the main object of the present invention is to exchange fresh air in the sole without mechanical parts with each step, to supply and forward directly to the foot and the technical problems made clear It overcomes the drawbacks of the prior art technique and creates conditions that allow good air circulation inside the shoe without significantly changing the sole dimensions of shoes without air circulation.
  • Another important objective is that the present invention can be applied to shoes equipped in the industry standard production methods and with the conventional technique.
  • the last objective is to find a construction that is simple in construction and not too expensive to manufacture.
  • a sole construction for a shoe according to claim 1 which has a sole body, in which a cavity is inserted, which extends continuously along the sole body and by an elastically deformable cover which has openings , is closed, and in which the cavity communicates through the openings with the outside of the sole body facing the shoe and in which the cavity communicates with one or more first transverse passages opening in openings in the lateral and / or rear surface of the shoe Solder body open, so that the cavity is placed in communication with the exterior of the sole body.
  • the cover can hereby cover loosely cover the cavity or be firmly connected to the sole body.
  • the cavity holds a first (sub) cavity facing the heel region and a second (sub) cavity facing the toe region and at least one longitudinal channel, via which the first and the second cavity communicate with one another, wherein the first cavity and / or the second cavity and / or the longitudinal channel through the openings with the shoe facing Outside of the sole body communicate.
  • the cover Furthermore protrudes from said cover in the region above the longitudinal channel and in the direction of the bottom of a transverse partition, which temporarily when walking in a seat with a negative profile, which is embedded in the bottom of the longitudinal channel and the first of the second chamber is used.
  • the seat in the longitudinal section of the sole body may in this case have a substantially triangular shape.
  • openings in each case a plurality of inlets / outlets, in the heel area and both on the inside and outside in the ball area.
  • the heel region extends from the foot end to the hinge region, and that the ball region extends from the foot front side to the hinge region.
  • the openings of the cover can thus be located in particular above the first and / or the second cavity. Likewise, they may be located above the longitudinal channel. In particular, the cover may have openings over its entire surface. It may be preferred that the cover and / or the sole body are formed elastically deformable.
  • a sole construction which provides improved air circulation in a simple construction, solely by movement during walking, without the need for significant enlargement over conventional sole constructions without air circulation.
  • the openings in the cover allow for effective ventilation of the shoe interior above the cover. While the formation of a continuous cavity may be simpler, the refinement in which the cavity comprises the two cavities and the longitudinal channel is advantageous in controlling the flow of air from the heel to toe area and vice versa through the longitudinal channel.
  • the transversal passages have exits in the cavity.
  • the transverse passages, with which the cavity (or the first or the second cavity) is in communication, can open in particular in at least one opening in the ball area of the sole body and in at least one opening in the heel area of the sole body, so that the cavity communicates with the exterior of the sole body Sole body is contacted.
  • outside air can be sucked in depending on the walking phase in the heel area and in the ball area previously sucked in air are expelled and vice versa.
  • the sole construction of the invention thus constitutes a type of bellows system or puncture system in which, by utilizing the natural walking motion by pressure and suction outside air is sucked in and out again.
  • a pressure on the heel area of the cavity is exerted, whereby the existing air in the sole structure in the direction of the sole of the foot and the ball area is pressed.
  • outside air is sucked in the heel area.
  • the first cavity may have an elongated, in particular elliptical, shape in plan view, and according to a further embodiment it is connected to one or more first transverse passages which open into openings in the lateral or rear surface of the sole body, so that the first cavity communicates with the exterior of the sole body Sole body is contacted.
  • the second cavity may be elongate in plan, in particular lance-shaped, and in accordance with an example of the sole construction disclosed herein, communicate with one or more second transverse passages opening into openings in the side surface of the sole body, such that second cavity communicates with the exterior of the sole body is contacted.
  • the connecting transversal passages have exits in the first and / or the second cavity.
  • the cover may have the shape of an inverted “C” in a 90 ° clockwise rotated “C”, the wings of which rest on the inner side surface of the sole body, and these wings have first and second through holes at the first and second aisles , While such a solid support of the cover is achieved, this construction is somewhat more complicated than an alternative solution in which the entire cover is formed without the wings of the inverted "C".
  • a certain number of spacers be made of elastically deformable material, whereby the temporary approach of the cover is made possible to the ground.
  • the spacers are substantially cylindrical and in the middle region with an annular constriction, so that the spacers have the shape of an eight in longitudinal section, or with a plurality of annular constrictions.
  • Such trained spacers are slightly compressed and reach quickly relief their discharge initial shape.
  • the spacers are attached to the cover and protrude in the direction of the second cavity. Alternatively, they may be formed within the second cavity in the sole body.
  • spacers of elastically deformable material between the cover and the bottom of the first cavity there may be a certain number of spacers of elastically deformable material, thereby enabling the temporary closing of the cover to the ground.
  • these spacers at least one, may be substantially cylindrical and have an annular constriction in the central region, so that the spacers are formed in a longitudinal section in the shape of a figure eight.
  • These spacers can also be attached to the cover. Since a greater force is exerted on the user's foot on the first cavity during walking, it may be preferable to provide the spacers with two or more annular constrictions.
  • the cover of the sole construction on a plurality of nubs which protrude into the cavity.
  • at least two of the plurality of dimples may be different in size and / or diameter and / or their Shore hardness.
  • Groups of nubs, for example in the form of truncated cones, different size and / or circumference can be arranged to further improve the air circulation and also the comfort of wear, eg at an anatomical arrangement, ie, one of the anatomy of the foot adapted arrangement and shape of the knobs to increase.
  • the cover and / or the studs may in this case consist of elastic material, for example PU or latex.
  • the nubs may be arranged in groups of nubs of the same size and / or the same circumference.
  • the nubs within a group may be spaced apart from each other with a measure that is different from the degree of spacing of individual nubs of another group.
  • knobs may be arranged to form channels from the heel area towards the ball area and / or channels from the ball area towards the heel area.
  • these channels can extend in the direction of the openings of the transverse passage.
  • At least one support in particular a column-like support, is formed for the cover within the longitudinal channel in the sole body.
  • this reduces the passage of air through the longitudinal channel or increases the speed of the air flowing from one cavity into the other cavity, thereby achieving more efficient air circulation.
  • the sole construction of the present invention may, in all examples, preferably comprise a breathable, moisture-impermeable membrane layer below and / or above the cover.
  • the exits of the one or more transverse passages in the first and / or the second cavity may be covered with a breathable, moisture-impermeable membrane layer.
  • the membrane layer may be formed as a one-piece layer.
  • isolated membrane patches may each cover outlets of the transverse passageways in the first and / or second lumens (air supply openings).
  • the breathable membrane layer may be provided, in particular, on the sides and / or on the bottom of the first and second cavities and the longitudinal channel, thereby ensuring the prevention of the ingress of moisture from the outside,
  • the one or more transverse passage may have inlaid valves with air-permeable, water-impermeable membranes.
  • the above-mentioned examples of the sole construction disclosed herein may further comprise a nubbed insole, in particular air-cushioned, which can be found in FIG extending the cavity and below the cover and having air circulation openings. Comfort and efficient air circulation can be further improved.
  • the nubbed insole may comprise a PU foam with openings and / or channels.
  • the sole structure may include an air circulating liner or a sheet of air-permeable material extending within the cavity and below the cover.
  • the cavity and in particular the first and the second (lower) cavity can have elevations made of an elastic material, such as PU. This allows a more targeted guidance of the air within the cavity of the sole body.
  • These elastic elevations may be formed for example in the form of oblique sawtooth-like elevations or honeycomb-shaped or latticed or rectangular or oval or round or wavy elevations.
  • the elevations may be in the form of conically placed rhombuses, in one piece made of PU.
  • the combination of the selected shape of the bumps and the number and exact position of the transverse passageway connecting the outside of the soleplate can be optimized for air circulation. In particular, these elastic collection significantly increase the comfort.
  • the sole construction for mechanical stabilization can furthermore comprise an additional elastic plastic intermediate layer, a movable shaft, which has air channels and / or openings which are formed, for example, in a honeycomb pattern.
  • the number I designates a shoe sole comprising a sole body 2 in which on the upper surface 3 in the heel region there is a first cavity (a first cavity or recess) 4 which, open at the top, cheaper - but not necessarily elliptical in plan Form has.
  • the first cavity 4 communicates with one or more first transverse passages 5 which exit at the lateral or rear surface 6 of the sole body 2 and thus connect the first cavity 4 to the outside air.
  • the first cavity 4 also communicates with at least one longitudinal channel 7 located along the sole of the foot and open at the top with a second cavity 8 which is open at the midfoot area of the user and more conveniently but not necessarily approximately lance shaped is.
  • the second cavity 8 is connected to one or more second transverse passages 9, which emerge on the lateral surface 6 of the sole body 2 and thus connect the first cavity 8 with the outside air.
  • the first cavity 4, the longitudinal channel 7 and the second cavity 8 are enclosed at the top by a cover 10 which is elastically deformable, with a negative profile for the latter, in correspondence of the first cavity 4 and the second cavity 8 a first chamber 11 and a second chamber 12 defined, which are interconnected by the longitudinal channel 7.
  • the cover 10 in cross-section in the form of an inverted C, the wings 13 resting on the lateral inner surface on which they rest and to which they are connected.
  • first and second through holes 15 are drilled at the first passages 5 and at the second passages 9.
  • the cover 10 in the region above the second cavity 8, one or more through holes 16, which allow the passage of air.
  • the spacers 18 are substantially cylindrical and have an annular constriction in the middle region, so that the shape of an eight is formed for the spacers in the longitudinal cross section.
  • the operation is the following:
  • the sole construction I can attach to an upper are connected, which is not shown in the accompanying figures, resulting in a footwear, also not shown.
  • FIG. 5 During the first walking phase, the foot 19 only rests on the heel 20, which therefore compresses the area of the cover 10, which is located above the first cavity 4, towards the bottom of this cavity. The volume of the first cavity 11 is thereby reduced and the air previously contained therein forced to pass partly through the longitudinal channel 7 and flow into the second cavity 12, partially through the first through holes 14 and the first passages 15 from the outer surface 6 of the sole body 2 To penetrate the outside.
  • part of the air previously contained in the second chamber 11 flows into the longitudinal channel 7, while a part of this air passes through the openings 16 in the direction of the foot.
  • the foot 19 rests on the heel 20, which therefore does not push the cover 10, or to a very small extent, towards the bottom of the first cavity 4.
  • the elastically deformable cover 10 returns to its undeformed state in the region in which it covers the cavity 4, whereby the volume in the first chamber 11 is greater and the air contained therein through the first passages 5 and to a very small Part - also sucked through the longitudinal channel 7 becomes.
  • a sole construction has been developed for air-circulating shoes which, when connected to the upper of a shoe, allows, at each walking step, the expulsion of the air contained in the footwear and the inflow of new air from the environment into the shoe, which is the inner Reduces moisture, adds fresh air and calms and improves the foot comfort of the user.
  • the sole construction of this invention of considerable strength and permanently ensures good air circulation. Since the sole consists only of easily available as well as easily produced and joinable parts, the production costs are rather low. Of course, the invention is suitable for many changes and variants, all of which move within the same concept of invention.
  • a sole body 101 which includes a sole body 102, on the upper surface thereof, as in the previously described sole body I, a first 104 and second cavity 108 which are interconnected by a longitudinal channel 107 and which are enclosed by an elastically deformable cover 110 in which one or more passage openings are embedded in the second cavity 108.
  • the first and second chambers are connected to the exterior of the sole body 102 through the first 105 and second passageways 109 recessed in the side surface of the sole body 102.
  • first and second passageways 109 recessed in the side surface of the sole body 102.
  • cover 110 In the area above the longitudinal channel 107 and in the direction of the bottom of a transverse partition wall 123 protrudes out of the cover 110, which is temporarily used when walking in a negative profile seat 124, which is recessed on the bottom of the longitudinal channel 107, so the first chamber is separated from the second.
  • the dividing wall 123 and the seat 124 have a substantially triangular shape in a longitudinal section of the sole body 102. Also in this solution are located between the cover 110 and the bottom of the second cavity 108, a certain number of spacers 118 made of elastically deformable material.
  • This operation is similar to that described in connection with the previous embodiment and in the FIGS. 1 to 6 2, with the difference that during the second walking phase, when the heel and toe are supported on the ground and the cover 110 is therefore pressed simultaneously towards the bottom of the first cavity 104, the longitudinal channel 107 and the second cavity 108, the septum 123 With negative profile 124 is used, whereby the first chamber is separated from the second chamber.
  • the air contained in the second chamber can not flow back into the first chamber, it is therefore forced to run through the recessed into the cover 110 through openings towards the foot, to escape partially through the second channels 102 from the sole body 102 , This leads to an increase in efficiency in the process of air circulation in footwear.
  • the septum 123 in the seat 124 is also used at the beginning of the following walking phase, in which the foot touches the toe only on the ground; During this phase, the air contained in the second chamber can not flow back into the first chamber, but only one run towards the foot and on the other escape from the sole body 102, which causes a further increase in the air circulation.
  • a footwear positionable sole 222 which consists of a sole body 202, in the upper surface 203, similar to the previously described sole body I, a first cavity 204 and a second cavity 208, through a longitudinal channel 207 connected to each other, are embedded.
  • the first cavity 204, the longitudinal channel 207 and the second cavity 208 are enclosed by an elastically deformable cover 210 into which, at the second cavity, one or more passage openings 216 are embedded.
  • the cover 210 in correspondence with the first 204 and the second cavity 208, defines first and second chambers interconnected by the longitudinal channel 207.
  • the first and second chambers are connected to the outside of the sole body through the first 205 and second passageways 209 recessed into the side surface 206 of the sole 222.
  • a certain number of spacers located between the cover 210 and the bottom of the second cavity 208 a certain number of spacers, not shown in the accompanying figures, which consist of elastically deformable material.
  • spacers protrudes in the area above the longitudinal channel 207 and in the direction of the bottom, from the cover 210, not shown in the figures, transverse transverse partition, which when walking from a likewise not shown and recessed in the bottom of the longitudinal channel 207 seat negative profile, resulting in a separation of the first chamber from the second chamber.
  • the sole 222 may be used in a footwear of a conventional type, not shown in the accompanying figures.

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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)

Claims (13)

  1. Construction de semelle pour une chaussure, comportant un corps de semelle (2) dans lequel est agencée une cavité (4, 8) qui s'étend le long du corps de semelle et qui est fermée par un recouvrement élastique déformable (10) comportant des ouvertures (14, 15, 16), et dans laquelle la cavité est connectée à la face externe du corps de semelle faisant face à la chaussure via lesdites ouvertures, la cavité étant en connexion avec un ou plusieurs premiers passages transversaux (5) qui aboutissent dans des ouvertures des surfaces latérales et/ou arrières (6) du corps de semelle de telle sorte que la cavité est mise en connexion avec l'extérieur du corps de semelle,
    dans laquelle la cavité comporte une première cavité faisant face à la zone du talon (4) et une deuxième cavité faisant face à la zone des orteils (8), et au moins un canal longitudinal (7) via lequel les première et deuxième cavités sont connectées entre elles, dans laquelle la première cavité et/ou la deuxième cavité et/ou le canal longitudinal sont connectés à travers les ouvertures au côté extérieur du corps de semelle faisant face à la chaussure ;
    et caractérisée en ce qu'une paroi de séparation de passage transversal (123) dépasse dudit recouvrement dans la zone située au-dessus du canal longitudinal et en direction de sa partie inférieure, qui lors de la marche s'insère temporairement dans un siège (124) à profil négatif agencé dans la partie inférieure du canal longitudinal et séparant les première et deuxième chambres.
  2. Construction de semelle pour une chaussure selon la revendication 1, dans laquelle les passages transversaux aboutissent dans au moins une ouverture de la zone de l'avant-pied du corps de semelle et dans au moins une ouverture de la zone du talon du corps de semelle, de telle manière que la cavité est connectée avec l'extérieur du corps de semelle.
  3. Construction de semelle selon la revendication 1 ou 2,
    dans laquelle la première cavité est connectée à un ou plusieurs premiers passages transversaux qui aboutissent dans des ouvertures des surfaces latérales ou arrières du corps de semelle, de telle manière que la première cavité est mise en connexion avec l'extérieur du corps de semelle ; et/ou
    dans laquelle la deuxième cavité est connectée à un ou plusieurs deuxièmes passages transversaux qui aboutissent à des ouvertures dans les surfaces latérales du corps de semelle, de telle manière que la deuxième cavité est connectée avec l'extérieur du corps de semelle.
  4. Construction de semelle selon la revendication 3, dans laquelle le recouvrement présente en section transversale une forme de « C » inversé dont les branches sont posées sur la surface latérale interne du corps de semelle, dans laquelle ces branches comportent des premier et deuxième trous de passage dans les premier et deuxième passages transversaux.
  5. Construction de semelle selon la revendication 3 ou 4, dans laquelle des entretoises en nombre déterminé constituées en un matériau plastique déformable sont agencées entre le recouvrement et le fond de la première cavité.
  6. Construction de semelle selon la revendication 5, dans laquelle au moins une entretoise dudit nombre déterminé d'entretoises est essentiellement cylindrique et comporte un étranglement annulaire dans sa partie médiane, de telle sorte que les entretoises présentent une forme de huit en section longitudinale, ou plusieurs étranglements annulaires, en particulier deux étranglements annulaires, dans la partie médiane.
  7. Construction de semelle selon l'une des revendications précédentes, dans laquelle le recouvrement comporte une pluralité de protubérances qui font saillie dans la cavité.
  8. Construction de semelle selon la revendication 1, dans laquelle l'assise du corps de semelle présente une forme essentiellement triangulaire en section longitudinale.
  9. Construction de semelle selon l'une des revendications précédentes, dans laquelle les sorties desdits un ou plusieurs passages transversaux sont obturées par une membrane perméable à l'humidité à respiration active.
  10. Construction de semelle selon l'une des revendications précédentes, dans laquelle une valve à membrane imperméable est insérée dans ledit passage transversal ou lesdits passages transversaux.
  11. Construction de semelle selon l'une des revendications précédentes, comportant en outre une semelle interne à protubérances, en particulier à coussins d'air, qui s'étend dans la cavité et sous le recouvrement et comporte des orifices de circulation d'air.
  12. Construction de semelle selon l'une des revendications précédentes, dans laquelle des rehaussements en un matériau élastique sont constitués dans la cavité, en particulier des rehaussements obliques en forme de dents de scie ou des rehaussements en forme de nid d'abeilles, de grille, de rectangles, d'ovales, de ronds ou d'ondes, dans laquelle les rehaussements sont en particulier conformés de telle sorte que des canaux sont constitués sur au moins une partie de la cavité.
  13. Construction de semelle selon la revendication 12, dans laquelle les rehaussements sont conformés de telle sorte que des canaux sont constitués sur au moins une partie de la cavité et s'étendent en particulier depuis la zone du talon en direction de la zone des orteils, et en particulier en direction des ouvertures des passages transversaux.
EP06776935A 2006-08-17 2006-08-17 Structure de semelle pour chaussure Not-in-force EP2059142B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/008139 WO2008019703A1 (fr) 2006-08-17 2006-08-17 structure de semelle pour chaussure

Publications (2)

Publication Number Publication Date
EP2059142A1 EP2059142A1 (fr) 2009-05-20
EP2059142B1 true EP2059142B1 (fr) 2013-01-16

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EP06776935A Not-in-force EP2059142B1 (fr) 2006-08-17 2006-08-17 Structure de semelle pour chaussure

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EP (1) EP2059142B1 (fr)
WO (1) WO2008019703A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA108666C2 (uk) 2010-09-03 2015-05-25 Водонепроникний, дихаючий предмет взуття і спосіб виробництва предмета взуття (варіанти)
EP3133948A1 (fr) 2014-04-22 2017-03-01 SFI Brand - Comércio e Distribuição, Lda. Chaussure présentant un passage d'air transversal et son procédé de fabrication

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343639A (en) * 1991-08-02 1994-09-06 Nike, Inc. Shoe with an improved midsole
US6457261B1 (en) * 2001-01-22 2002-10-01 Ll International Shoe Company, Inc. Shock absorbing midsole for an athletic shoe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT251700Y1 (it) * 2000-01-21 2004-01-20 Lotto Sport Italia Spa Struttura di suola
WO2004037031A1 (fr) * 2002-10-11 2004-05-06 Jeffrey S. Brooks, Inc. Chaussure a semelle respirante
US6948260B2 (en) * 2003-12-24 2005-09-27 Hsi-Liang Lin 3D air-pumping shoe
US20050283996A1 (en) * 2004-06-24 2005-12-29 Calzaturificio F. Lli Soldini S.P.A. Sole and means for airing shoes
WO2006014046A1 (fr) * 2004-08-04 2006-02-09 Jong-Sik Kim Chaussure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343639A (en) * 1991-08-02 1994-09-06 Nike, Inc. Shoe with an improved midsole
US6457261B1 (en) * 2001-01-22 2002-10-01 Ll International Shoe Company, Inc. Shock absorbing midsole for an athletic shoe

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WO2008019703A1 (fr) 2008-02-21
EP2059142A1 (fr) 2009-05-20

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