EP2138063A1 - Shoe with improved bottom assembly - Google Patents

Shoe with improved bottom assembly Download PDF

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Publication number
EP2138063A1
EP2138063A1 EP09005560A EP09005560A EP2138063A1 EP 2138063 A1 EP2138063 A1 EP 2138063A1 EP 09005560 A EP09005560 A EP 09005560A EP 09005560 A EP09005560 A EP 09005560A EP 2138063 A1 EP2138063 A1 EP 2138063A1
Authority
EP
European Patent Office
Prior art keywords
shoe
sole
layer
reinforcing layer
outsole
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
EP09005560A
Other languages
German (de)
French (fr)
Inventor
René Borel
Patrick Leick
Pascal Stryjak
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.)
Salomon SAS
Original Assignee
Salomon SAS
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 Salomon SAS filed Critical Salomon SAS
Publication of EP2138063A1 publication Critical patent/EP2138063A1/en
Ceased legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18Resilient soles
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/02Soles; Sole-and-heel integral units characterised by the material
    • A43B13/026Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/02Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12Soles with several layers of different materials
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/16Pieced soles
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18Resilient soles
    • A43B13/181Resiliency achieved by the structure of the sole

Definitions

  • the invention relates to a shoe, especially sports, and more particularly relates to a shoe for athletics or walking sports.
  • Such shoes can be used in areas such as walking or running on flat terrain or in the mountains, mountaineering, snowboarding, skiing, snowshoeing, rollerblading, snowboarding and snowboarding. wheels, cycling, a ball sport, or whatever.
  • a shoe may include a low or high shaft.
  • the shoe can also be relatively flexible or on the contrary more rigid. However it is in all cases desirable that the sole of the shoe provides a certain comfort, as well as a certain accuracy in the transmission of sensory information or impulses related to the supports.
  • the outer sole includes a walking sole and a reinforcing layer.
  • the outsole generally includes rubber, to facilitate the adhesion to the ground.
  • the reinforcing layer helps to connect the sole to the upper of the shoe. This layer is generally little or not extensible, which brings stability to the shape of the sole.
  • the shoes whose outer sole includes a tread and a reinforcing layer provide good accuracy in the transmission of information or pulses. However, it appears that their comfort is insufficient, in the sense that the impulses are not always sufficiently damped. In addition there is a rapid wear of certain locations of the outsole. It also appears that walking, or running, is a source of fatigue for the user.
  • the document FR 2,685,173 proposes an outer sole which comprises a footplate provided to contact the ground, a comfort layer disposed directly under the foot, and a reinforcing layer interposed between the outsole and the comfort layer.
  • the shoe according to the document FR 2,685,173 has an improved comfort compared to the prior art.
  • the accuracy in the transmission of information or pulses is sometimes insufficient, in the sense that this information and pulses are broadcast in the sole assembly. This is the case for punctual supports on rocks, for example.
  • the object of the invention is to further improve the soleing of a shoe and in particular to provide at the level of the sole a certain comfort, while offering a good accuracy in the transmission of sensory information or impulses related to the supports.
  • the invention aims to optimize the two antinomic characteristics of comfort and precision.
  • the invention also seeks to reduce the wear rate of the most stressed locations of the outsole.
  • the invention seeks to reduce the fatigue related to walking.
  • the invention proposes a shoe that includes an outer sole, the sole comprising a walking sole and a reinforcing layer.
  • the shoe according to the invention is characterized in that a cushioning layer takes place between the tread sole and the reinforcing layer, and in that at least one leg connects the tread sole to the tread layer. reinforcement.
  • the cushioning layer separates the outsole from the reinforcing layer.
  • a tab locally creates a direct connection between the outsole and the reinforcing layer.
  • the invention provides different portions or zones of the soleing with different properties. This means that some portions are relatively flexible: it is of course portions without legs. As a corollary, the portions provided with legs are more rigid. It is obvious that the notions of flexibility and rigidity are relative.
  • Another advantage is a reduction in the wear rate of the softer portions of the sole.
  • the outsole follows the deformations of the cushioning layer.
  • the damping layer gives a freedom of deformation to the outsole.
  • a consequence is a lower stress in shear, or friction, of the outsole. This is especially true when the latter is equipped with crampons.
  • Another advantage observed, for the sole assembly according to the invention, is the ability to store and then restore at least a portion of the energy supplied during the unwinding of the foot. Indeed, an unwinding puts the outsole in tension. It is the distance between the outsole and the reinforcing layer that allows the tensioning, which is even stronger than the thickness of the damping layer is large. At the end of the movement of unwinding of the foot, that is to say at the moment when the shoe leaves the ground, the energy created by the tension of the outsole tends to return the sole formation initial shape. This is a spring effect provided to the sole, in particular by the outsole. This effect propels the shoe in the direction of walking forward. A benefit that results is a reduction in user fatigue, as the user must provide less energy for an equivalent stride.
  • the first embodiment that will be described after more specifically relates to shoes for walking or running flat or on rough ground.
  • the invention applies to other fields such as those mentioned before.
  • a running shoe is provided to accommodate the user's foot.
  • the shoe 1 comprises an outer sole 2 and a rod 3 disposed on the sole.
  • the shoe 1 extends in length between a rear end or heel 4 and a front end or tip 5, and in width between a lateral side 6 and a medial side 7.
  • the rod 3 comprises a lower portion 10, provided to surround the foot, with the exception of an upper portion.
  • the stem also comprises an upper portion.
  • the shoe 1 is structured to allow a smooth running of the foot during walking, transmissions of sensory information, and impulses for support or receptions. This is why the outer sole 2 and the rod 3 are relatively flexible.
  • the shoe is more rigid to facilitate certain practices, such as climbing or cycling.
  • the rod 3 comprises in particular a lateral quarter 12, a medial quarter 13, and a tongue 14.
  • the latter 14 connects to each other the quarters 12, 13 to give the rod 3 its continuity.
  • the rod 3 is secured to the sole assembly 2, at the periphery of the sole assembly.
  • the joining is done by gluing.
  • other means such as sewing, or the combination of a collage and a seam, could be suitable.
  • a clamping device 20 is provided to clamp the rod 3 reversibly.
  • the clamping device 20 comprises for example loops 21 disposed on the lateral 12 and medial 13, and a lace 22.
  • the latter may comprise one or more strands.
  • the lace 22 follows a path that leads alternately from one quarter 12, 13 to the other, and can be reversibly clamped by any known means.
  • a blocking means can be used, or a simple node.
  • the outer soleing 2 is described in more detail using the perspective according to the figure 2 .
  • the sole 2 comprises a tread 30 provided to cooperate with the ground.
  • This sole 30 extends longitudinally from the rear end 4 to the front end 5, and transversely from the lateral side 6 to the medial side 7.
  • the outsole 30 comprises a wear face 31. This is of course this face 31 which presses on the ground.
  • the wear face 31 is provided with crampons 32, which form a relief to improve the adhesion to the ground.
  • the outsole 30 comprises a connecting face 35. This is intended to be associated with the other elements of the sole assembly 2, as will be seen later.
  • the outsole 30 is made from any suitable material.
  • the outsole 30 comprises rubber, or is made entirely of rubber. This promotes the resistance to wear, especially by friction. Rubber is also a material with very elastic properties.
  • the outer soleing 2 also comprises a reinforcing layer 40. This extends from the rear end 4 towards the front end 5, and transversely from the lateral side 6 to the medial side 7.
  • the reinforcing layer 40 comprises one face bottom 41 turned towards the outsole 30, and an upper face 45 facing the rod 3.
  • the reinforcing layer 40 comprises a rear portion 48 which extends under the heel of the user, and a portion before 49 which extends under the metatarsus or under the metatarsus and the toes.
  • the rear portions 48 and before 49 extend one another.
  • the front portion 49 comprises a lateral branch 50 and a medial branch 51, which form a fork oriented towards the front.
  • the reinforcing layer 40 may alternatively be provided.
  • the front portion 49 could extend continuously from the lateral side 6 to the medial side 7.
  • the reinforcing layer 40 comprises a substantially inextensible material or one or more plastics.
  • a substantially inextensible material for example polyurethane, or polyamide, is suitable. This makes the reinforcing layer 40 flexible and substantially inextensible.
  • the sole 2 has a certain structural stability, while allowing free movement of the foot.
  • a damping layer 60 takes place between the outsole 30 and the reinforcing layer 40, and at least one lug 61, 62, 64, 65 connects the outsole 30 to the reinforcing layer 40.
  • the damping is important in the soft areas, which have no legs. As a corollary, damping is reduced or absent in an area provided with a leg.
  • the invention provides a certain comfort where it is needed, as well as support stability where it is also necessary. In other words, a specific function is assigned to different parts of the soleing 2.
  • the cushioning layer 60 comprise a foam of damping material, such as an ethyl vinyl acetate (EVA), or a rubber foam, or any equivalent.
  • EVA ethyl vinyl acetate
  • the cells of the foam allow it to deform in a reversible manner, especially in compression. As a result, the layer 60 dampens pulses or shocks.
  • the shoe 1 comprises four legs 61, 62, 64, 65 located forward, that is to say at the height of the toes and metatarsal. More specifically, the shoe 1 comprises a first lateral lug 61, a second lateral lug 62, a first medial lug 64, and a second medial lug 65.
  • the first lateral lugs 61 and medial 64 are each located at the level of the toes. In a nonlimiting manner, these tabs 61, 64 are facing each other transversely.
  • the second side legs 62 and medial 65 are located at the metatarsal level. These tabs 62, 65 are also for example facing each other transversely. In fact the tabs 61, 62, 64, 65 are arranged in pairs oriented in a transverse direction of the shoe.
  • each tab 61, 62, 64, 65 is structured in the same way.
  • Each tab 61, 62, 64, 65 respectively comprises a first portion 71, 72, 74, 75 forming a tongue, and a second portion 81, 82, 84, 85 forming a base.
  • a tab and a base extend one another to give a tab 61, 62, 64, 65 an L shape.
  • the tab extends from the reinforcing layer 40.
  • the tab 71, 72, 74, 75 is perpendicular to the reinforcing layer 40, and the base 81, 82, 84, 85 is parallel to this same layer.
  • a tongue and a base form a single piece.
  • each lug 61, 62, 64, 65 forms with the front portion 49 a single piece.
  • the reinforcing layer 40, with the rear portions 48 and 49 before, and the tabs 61, 62, 64, 65 form a single piece. This facilitates the manufacture of the 2. This part is obtained by any process such as molding, injection, or other.
  • a construction in which the tabs are secured to the reinforcing layer, without forming with it a single piece, can also be considered.
  • These tabs are preferably made of the same material as the reinforcing layer.
  • each tab 71, 72, 74, 75 is flush with a lateral side 6 or medial 7, and that each base 81, 82, 84, 85 penetrates the interior of the sole assembly.
  • the damping layer 60 is structured to accommodate the tabs 61, 62, 64, 65.
  • the damping layer 60 has a series of notches 91, 92, 94, 95 each provided for housing a leg 61, 62, 64, 65.
  • the damping layer has a first lateral notch 91, a second lateral notch 92, a first medial notch 94, and a second medial notch 95.
  • the first lateral notch 91 accommodates the first side tab 61, and so on.
  • Each notch 91, 92, 94, 95 houses a tab 61, 62, 64, 65, that is to say a tongue and a base. As a result each tab is flush with the side 6, 7 of the shoe where it is located.
  • Each tongue 71, 72, 74, 75 borders the damping layer 60 transversely. This makes the tab visible but, above all, optimizes its action as we will see later.
  • Each base itself penetrates the sole in the cushioning layer 60, and in contact with the outsole 30. This is why each leg directly connects the reinforcing layer 40 to the outsole 30.
  • connection layer 100 can be provided in the outer soleplate, which layer takes place between the reinforcing layer 40 and the upper.
  • This layer 100 bonded to the reinforcing layer 40 and, between the branches 50, 51, the cushioning layer 60, is also used to increase the comfort of the shoe.
  • This layer 100 is not mandatory. It may also include a cushioning plastic foam, such as an ethyl vinyl acetate, or a foam of another material.
  • the sole assembly 2 comprises either three 30, 40, 60 or four 30, 40, 60, 100 layers. These numbers are not limiting: one or more layers could be added, being interposed or superimposed on the others.
  • Figures 3 and 4 visualize the location of the legs 61, 62, 64, 65 along the shoe.
  • the first lateral leg 61 and medial 64 are located at the toes, in front of the joints that link the toes to the metatarsal.
  • the second lateral legs 62 and medial 65 are located at the metatarsal level, behind the joints that link the toes to the metatarsal.
  • these joints are located in an area of the sole assembly 2 free of legs. In other words, these joints are located in an area of the assembly where the depreciation is important. This protects the joints from impulses that solicit the sole.
  • This arrangement is well suited to shoes intended for running, which generates significant dynamic impulses at the joints.
  • the pulses are born during the march.
  • the support of the shoe on the ground G varies.
  • the shoe 1 alternately passes from a situation where the heel and the metatarsal area are supported, as on the figure 3 , in a situation where only the area of the joints between the toes and the metatarsus is supported, as on the figure 4 .
  • the areas of the sole assembly 2 which are provided with tabs 61, 62, 64, 65 give stability to the supports. Indeed, as we understand it with the help of Figures 7 and 8 , the tabs 62, 65 of an area oppose the compression according to the thickness and widening according to the width of the sole.
  • Each tab 61, 62, 64, 65, with its tongue and its base, is opposed to a deformation of the damping layer 60. Of course this opposition is located longitudinally at the height of the legs, and located transversely at the level of branches 50, 51 of the reinforcing layer 40.
  • the sole assembly 2 brings comfort where it is needed, as well as a high precision in the transmission of driving impulses or in the passage of sensory information where it is also necessary.
  • the invention specializes different areas of the sole assembly 2 with respect to the functions it fulfills. Note that for the first embodiment, stability is sought at the metatarsal and toes, and that comfort is sought at the joints between the metatarsus and toes.
  • the invention also seeks to reduce the fatigue of the user, as understood by the diagrams according to the Figures 9 and 10 . These patterns are correlated respectively with Figures 3 and 4 . So we find the sole 2 in a movement of unfolding.
  • the walking sole 30 has a minimum length in its portion between the first lateral lug 61 and the second lateral lug 62. The sole length is also minimal between the first medial lug 64 and the second medial lug 65.
  • the outsole 30 extends longitudinally between two lugs situated on the same side 6, 7.
  • the sole 30 therefore extends between the lateral lugs 61, 62 and between the medial legs 64, 65.
  • the sole 30 extends reversibly. It behaves like a spring that is stretched and, as a result, accumulates energy. In practice a portion of the energy, provided by the user to support the front, is accumulated by the sole 30. This accumulation is possible because two legs on the same side, and therefore their bases, s 'move away from each other. As these bases are secured to the sole 30, it is found stretched when the convexity of the sole increases.
  • the second embodiment is presented using the figures 11 and 12 .
  • a shoe 101 which includes a sole 102 and a high shaft 103. The latter is said high because it covers the foot and the top of the ankle.
  • the shoe 101 has a heel 104, a point 105, a lateral side 106 and a medial side 107, as well as a clamping device 120.
  • the sole assembly 102 comprises a tread 130, a reinforcing layer 140, a diaper 160, and a bonding layer 200.
  • the boot 101 comprises six lugs located at the front, namely a first lateral lug 161, a second lateral lug 162, a third lateral lug 163, and a first medial lug 164, a second medial lug 165, and a third lug medial 166.
  • the first 161, 164, second 162, 165 and third 163, 166 tabs are respectively facing each other transversely.
  • the damping layer 160 has first 191, second 192 and third 193 side notches, and first 194, second 195 and third 196 medial notches.
  • the notches welcome the legs. Since the structures and functions of the elements of the second form are similar or identical to those of the first form, they are not described in more detail. It is simply noted that the front portion 149 of the reinforcing layer 140 carries a higher number of legs.
  • the sole 102 of the shoe 101 has, in its front part, an alternation of soft areas and rigid areas, including three rigid areas. These are delimited by the extent of the legs. We can also say that the legs follow one another in a relatively tight pace. This arrangement is well suited for walking in the mountains, during which the front of the shoe rests on protruding rocks.
  • the alternation of the flexible and rigid zones makes it easy for the sole to adapt to the unevenness of the ground. This improves the stability of the shoe.
  • the third embodiment is presented using the figures 13 and 14 . It is in fact an alternative embodiment of the outsole 30. It comprises several parts, namely a crown 210 and a heart 211.
  • the crown extends in length from the heel 4 to the tip 5 , and in width from the lateral side 6 to the medial side 7.
  • the crown comprises an extensible flexible material, such as rubber or any equivalent.
  • the core 211 in turn comprises a web core 212, which 212 carries crampons 32.
  • the core 212 is flexible but very little, if any, extensible. Thus the effect of accumulation and energy restoration is located at the sides 6, 7 of the shoe. Note also that the legs are in connection with the crown
  • crown 210 borders the heart 211. This gives a geometric continuity to the sole 30.
  • the number of legs may be different from four or six.
  • Legs can be arranged on one side of the shoe, whether lateral or medial. Legs may also be disposed toward the middle of the shoe, that is, midway between the side edge and the medial edge.
  • a tab does not necessarily form a one-piece piece with the reinforcing layer.
  • the leg is an assembled part of the sole.
  • the tab may have a C-shaped structure, or equivalent form that facilitates the connection between the outsole and the reinforcing layer.

Abstract

The footwear has an outer bottom assembly (2) comprising an outsole (30) and a reinforcement layer (40). A damping layer (60) is positioned between the outsole and the reinforcement layer, and flanges (61, 62, 64, 65) connect the outsole to the reinforcement layer, where the flanges are located in a front portion (49) of the reinforcement layer. The front portion of the reinforcement layer includes a lateral branch (50) and a medial branch (51). The damping layer has damping material i.e. ethyl-vinyl-acetate, and the reinforcement layer includes a substantially inextensible material.

Description

L'invention se rapporte à une chaussure, notamment de sport, et concerne plus particulièrement une chaussure destinée à l'athlétisme ou à la marche sportive.The invention relates to a shoe, especially sports, and more particularly relates to a shoe for athletics or walking sports.

De telles chaussures peuvent être utilisées dans des domaines tels que la marche ou la course sur terrain plat ou en montagne, l'alpinisme, ou encore le surf sur neige, le ski, la raquette à neige, le patin à roulettes, la planche à roues, le cyclisme, un sport de balle, ou autre.Such shoes can be used in areas such as walking or running on flat terrain or in the mountains, mountaineering, snowboarding, skiing, snowshoeing, rollerblading, snowboarding and snowboarding. wheels, cycling, a ball sport, or whatever.

Une chaussure peut comprendre une tige basse ou une tige haute. La chaussure peut aussi être relativement souple ou au contraire plus rigide. Cependant il est dans tous les cas souhaitable que la semelle de la chaussure apporte un certain confort, ainsi qu'une certaine précision dans la transmission des informations sensorielles ou des impulsions liées aux appuis.A shoe may include a low or high shaft. The shoe can also be relatively flexible or on the contrary more rigid. However it is in all cases desirable that the sole of the shoe provides a certain comfort, as well as a certain accuracy in the transmission of sensory information or impulses related to the supports.

Pour certaines chaussures de sport, le semelage externe comprend une semelle de marche et une couche de renfort. La semelle de marche comprend généralement du caoutchouc, pour faciliter l'adhérence au sol. La couche de renfort, quant à elle, contribue à relier le semelage à la tige de la chaussure. Cette couche est généralement peu ou pas extensible, ce qui apporte de la stabilité à la forme du semelage.For some sports shoes, the outer sole includes a walking sole and a reinforcing layer. The outsole generally includes rubber, to facilitate the adhesion to the ground. The reinforcing layer, in turn, helps to connect the sole to the upper of the shoe. This layer is generally little or not extensible, which brings stability to the shape of the sole.

Les chaussures dont le semelage externe comprend une semelle de marche et une couche de renfort offrent une bonne précision dans la transmission des informations ou des impulsions. Cependant il apparaît que leur confort est insuffisant, dans le sens où les impulsions ne sont pas toujours assez amorties. De plus on observe une usure rapide de certains emplacements de la semelle de marche. Il apparaît également que la marche, ou la course, est source d'une certaine fatigue pour l'utilisateur.The shoes whose outer sole includes a tread and a reinforcing layer provide good accuracy in the transmission of information or pulses. However, it appears that their comfort is insufficient, in the sense that the impulses are not always sufficiently damped. In addition there is a rapid wear of certain locations of the outsole. It also appears that walking, or running, is a source of fatigue for the user.

Bien entendu des évolutions de structure ont été proposées pour la réalisation d'un semelage, notamment pour améliorer le confort.Of course structural changes have been proposed for the realization of a sole, especially to improve comfort.

Par exemple le document FR 2 685 173 propose un semelage externe qui comprend une semelle de marche prévue pour contacter le sol, une couche de confort disposée directement sous le pied, ainsi qu'une couche de renfort intercalée entre la semelle de marche et la couche de confort.For example the document FR 2,685,173 proposes an outer sole which comprises a footplate provided to contact the ground, a comfort layer disposed directly under the foot, and a reinforcing layer interposed between the outsole and the comfort layer.

La chaussure selon le document FR 2 685 173 présente un confort amélioré par rapport à l'art antérieur. Cependant la précision dans la transmission des informations ou des impulsions est parfois insuffisante, dans le sens où ces informations et impulsions sont diffusées dans le semelage. C'est le cas pour des appuis ponctuels sur des rochers, par exemple. De plus on observe encore une usure rapide de certains emplacements de la semelle de marche. Il apparaît encore également que la marche est source de fatigue pour l'utilisateur.The shoe according to the document FR 2,685,173 has an improved comfort compared to the prior art. However, the accuracy in the transmission of information or pulses is sometimes insufficient, in the sense that this information and pulses are broadcast in the sole assembly. This is the case for punctual supports on rocks, for example. In addition, there is still a rapid wear of certain locations of the outsole. It also appears that walking is a source of fatigue for the user.

Par rapport à cela l'invention a pour but d'améliorer encore le semelage d'une chaussure et a notamment pour but d'apporter au niveau de la semelle un certain confort, tout en offrant une bonne précision dans la transmission des informations sensorielles ou des impulsions liées aux appuis. En d'autres termes l'invention vise une optimisation des deux caractéristiques antinomiques que sont le confort et la précision.In relation to this, the object of the invention is to further improve the soleing of a shoe and in particular to provide at the level of the sole a certain comfort, while offering a good accuracy in the transmission of sensory information or impulses related to the supports. In other words, the invention aims to optimize the two antinomic characteristics of comfort and precision.

L'invention cherche également à réduire la vitesse d'usure des emplacements les plus sollicités de la semelle de marche.The invention also seeks to reduce the wear rate of the most stressed locations of the outsole.

L'invention cherche encore à réduire la fatigue liée à la marche.The invention seeks to reduce the fatigue related to walking.

Pour ce faire l'invention propose une chaussure qui comprend un semelage externe, le semelage comprenant une semelle de marche et une couche de renfort.To do this, the invention proposes a shoe that includes an outer sole, the sole comprising a walking sole and a reinforcing layer.

La chaussure selon l'invention est caractérisée par le fait qu'une couche d'amortissement prend place entre la semelle de marche et la couche de renfort, et par le fait qu'au moins une patte relie la semelle de marche à la couche de renfort.The shoe according to the invention is characterized in that a cushioning layer takes place between the tread sole and the reinforcing layer, and in that at least one leg connects the tread sole to the tread layer. reinforcement.

Telle que disposée, la couche d'amortissement sépare la semelle de marche de la couche de renfort. Cependant, une patte crée localement une liaison directe entre la semelle de marche et la couche de renfort. En fait l'invention apporte à différentes portions ou zones du semelage des propriétés différentes. Cela signifie que certaines portions sont relativement souples : il s'agit bien entendu des portions dépourvues de pattes. Par corollaire, les portions munies de pattes sont plus rigides. Il est évident que les notions de souplesse et de rigidité sont relatives.As arranged, the cushioning layer separates the outsole from the reinforcing layer. However, a tab locally creates a direct connection between the outsole and the reinforcing layer. In fact, the invention provides different portions or zones of the soleing with different properties. This means that some portions are relatively flexible: it is of course portions without legs. As a corollary, the portions provided with legs are more rigid. It is obvious that the notions of flexibility and rigidity are relative.

Parmi les avantages qui découlent d'une telle structure, on peut citer l'optimisation des caractéristiques mécaniques du semelage. Les zones amorties et les zones rigidifiées sont réparties pour optimiser le comportement de la chaussure, comme on le verra mieux dans la partie descriptive.Among the advantages that result from such a structure, one can cite the optimization of the mechanical characteristics of the sole assembly. The damped areas and the stiffened areas are distributed to optimize the behavior of the shoe, as will be seen better in the descriptive part.

Un autre avantage est une réduction de la vitesse d'usure des portions plus souples du semelage. En effet, là où seule la couche d'amortissement relie la semelle de marche à la couche de renfort, la semelle de marche suit les déformations de la couche d'amortissement. Par exemple lors d'un appui marqué, ce sont à la fois la semelle de marche et la couche d'amortissement qui se déforment. En d'autres termes on peut dire que la couche d'amortissement donne une liberté de déformation à la semelle de marche. Une conséquence est une moindre sollicitation en cisaillement, ou en frottement, de la semelle de marche. Cela est particulièrement vrai quand cette dernière est munie de crampons.Another advantage is a reduction in the wear rate of the softer portions of the sole. Indeed, where only the cushioning layer connects the outsole to the reinforcing layer, the outsole follows the deformations of the cushioning layer. For example, during a marked support, it is both the outsole and the damping layer that deform. In other words it can be said that the damping layer gives a freedom of deformation to the outsole. A consequence is a lower stress in shear, or friction, of the outsole. This is especially true when the latter is equipped with crampons.

Un autre avantage observé, pour le semelage selon l'invention, est la capacité à stocker puis à restituer une partie au moins de l'énergie fournie lors du déroulement du pied. En effet, un déroulement met la semelle de marche en tension. C'est la distance entre la semelle de marche et la couche de renfort qui permet la mise en tension, laquelle est d'autant plus forte que l'épaisseur de la couche d'amortissement est grande. A la fin du mouvement de déroulement du pied, c'est-à-dire à l'instant où la chaussure quitte le sol, l'énergie créée par la tension de la semelle de marche tend à rendre au semelage sa forme initiale. Il s'agit d'un effet de ressort fourni au semelage notamment par la semelle de marche. Cet effet propulse la chaussure dans le sens de la marche, vers l'avant. Un avantage qui en découle est une réduction de la fatigue de l'utilisateur, car celui-ci doit fournir moins d'énergie pour une foulée équivalente.Another advantage observed, for the sole assembly according to the invention, is the ability to store and then restore at least a portion of the energy supplied during the unwinding of the foot. Indeed, an unwinding puts the outsole in tension. It is the distance between the outsole and the reinforcing layer that allows the tensioning, which is even stronger than the thickness of the damping layer is large. At the end of the movement of unwinding of the foot, that is to say at the moment when the shoe leaves the ground, the energy created by the tension of the outsole tends to return the sole formation initial shape. This is a spring effect provided to the sole, in particular by the outsole. This effect propels the shoe in the direction of walking forward. A benefit that results is a reduction in user fatigue, as the user must provide less energy for an equivalent stride.

D'autres caractéristiques et avantages de l'invention seront mieux compris à l'aide de la description qui va suivre, en regard du dessin annexé illustrant, selon des formes de réalisation non limitatives, comment l'invention peut être réalisée, et dans lequel :

  • la figure 1 est une vue en perspective avant d'une chaussure, selon une première forme de réalisation de l'invention,
  • la figure 2 est une vue en perspective éclatée d'un semelage de la chaussure selon la première forme,
  • la figure 3 est une vue de côté de la chaussure selon la première forme, dans un cas d'appui intégral sur le sol,
  • la figure 4 est similaire à la figure 3, pour un appui avant,
  • la figure 5 est une coupe partielle selon V-V de la figure 3,
  • la figure 6 est une coupe partielle selon VI-VI de la figure 4,
  • la figure 7 est une coupe selon VII-VII de la figure 3, dans un cas où le semelage est peu sollicité en appui,
  • la figure 8 est similaire à la figure 7, dans un cas où le semelage supporte une surcharge,
  • la figure 9 est une vue schématique partielle de la figure 3,
  • la figure 10 est une vue schématique partielle de la figure 4,
  • la figure 11 est une vue en perspective avant d'une chaussure, selon une deuxième forme de réalisation de l'invention,
  • la figure 12 est une vue en perspective éclatée d'un semelage de la chaussure selon la deuxième forme,
  • la figure 13 est une vue partielle en perspective éclatée d'un semelage pour une chaussure selon une troisième forme de réalisation de l'invention,
  • la figure 14 est une vue plus complète du semelage selon la troisième forme.
Other features and advantages of the invention will be better understood with the aid of the following description, with reference to the appended drawing illustrating, according to non-limiting embodiments, how the invention can be realized, and in which :
  • the figure 1 is a front perspective view of a shoe, according to a first embodiment of the invention,
  • the figure 2 is an exploded perspective view of a sole of the shoe according to the first form,
  • the figure 3 is a side view of the shoe according to the first form, in a case of integral support on the ground,
  • the figure 4 is similar to the figure 3 , for a front support,
  • the figure 5 is a partial section according to VV of the figure 3 ,
  • the figure 6 is a partial section along VI-VI of the figure 4 ,
  • the figure 7 is a section according to VII-VII of the figure 3 , in a case where the sole assembly is not very stressed in support,
  • the figure 8 is similar to the figure 7 , in a case where the soleing supports an overload,
  • the figure 9 is a partial schematic view of the figure 3 ,
  • the figure 10 is a partial schematic view of the figure 4 ,
  • the figure 11 is a front perspective view of a shoe, according to a second embodiment of the invention,
  • the figure 12 is an exploded perspective view of a sole of the shoe according to the second form,
  • the figure 13 is a fragmentary perspective exploded view of a sole assembly for a shoe according to a third embodiment of the invention,
  • the figure 14 is a more complete view of the sole according to the third form.

La première forme de réalisation qui va être décrite après concerne plus spécialement des chaussures pour la marche ou la course à plat ou en terrain mouvementé. Cependant l'invention s'applique à d'autres domaines tels que ceux évoqués avant.The first embodiment that will be described after more specifically relates to shoes for walking or running flat or on rough ground. However, the invention applies to other fields such as those mentioned before.

La première forme est décrite ci-après à l'aide des figures 1 à 10.The first form is described below using the Figures 1 to 10 .

Comme le montre la figure 1, une chaussure de course est prévue pour accueillir le pied de l'utilisateur.As shown in figure 1 , a running shoe is provided to accommodate the user's foot.

De manière connue, la chaussure 1 comprend un semelage externe 2 et une tige 3 disposée sur le semelage. La chaussure 1 s'étend en longueur entre une extrémité arrière ou talon 4 et une extrémité avant ou pointe 5, et en largeur entre un côté latéral 6 et un côté médial 7.In known manner, the shoe 1 comprises an outer sole 2 and a rod 3 disposed on the sole. The shoe 1 extends in length between a rear end or heel 4 and a front end or tip 5, and in width between a lateral side 6 and a medial side 7.

Telle que représentée la tige 3 comprend une portion basse 10, prévue pour entourer le pied, à l'exception d'une portion haute. Cependant, il pourrait être également prévu que la tige comprenne aussi une portion haute.As shown in the rod 3 comprises a lower portion 10, provided to surround the foot, with the exception of an upper portion. However, it could also be expected that the stem also comprises an upper portion.

La chaussure 1 est structurée pour permettre un bon déroulement du pied pendant la marche, des transmissions d'informations sensorielles, et des impulsions pour des appuis ou des réceptions. C'est pourquoi le semelage externe 2 et la tige 3 sont relativement souples.The shoe 1 is structured to allow a smooth running of the foot during walking, transmissions of sensory information, and impulses for support or receptions. This is why the outer sole 2 and the rod 3 are relatively flexible.

Cependant, il pourrait être également prévu que la chaussure soit plus rigide pour faciliter certaines pratiques, comme l'escalade ou le cyclisme.However, it could also be expected that the shoe is more rigid to facilitate certain practices, such as climbing or cycling.

La tige 3 comprend notamment un quartier latéral 12, un quartier médial 13, et une languette 14. Cette dernière 14 relie l'un à l'autre les quartiers 12, 13 pour donner à la tige 3 sa continuité. Cependant, il pourrait être prévu de ne pas utiliser de languette. Dans ce cas, les quartiers 12, 13 peuvent rester séparés ou se superposer.The rod 3 comprises in particular a lateral quarter 12, a medial quarter 13, and a tongue 14. The latter 14 connects to each other the quarters 12, 13 to give the rod 3 its continuity. However, it could be planned not to use a tab. In this case, the neighborhoods 12, 13 may remain separate or superimposed.

La tige 3 est solidarisée au semelage 2, au niveau de la périphérie du semelage. La solidarisation est faite par collage. Cependant un autre moyen tel qu'une couture, ou la combinaison d'un collage et d'une couture, pourrait convenir.The rod 3 is secured to the sole assembly 2, at the periphery of the sole assembly. The joining is done by gluing. However, other means such as sewing, or the combination of a collage and a seam, could be suitable.

Un dispositif de serrage 20 est prévu pour serrer la tige 3 de manière réversible. Le dispositif de serrage 20 comprend par exemple des passants 21 disposés sur les quartiers latéral 12 et médial 13, ainsi qu'un lacet 22. Ce dernier peut comprendre un ou plusieurs brins. Bien entendu, le lacet 22 suit un parcours qui le mène alternativement d'un quartier 12, 13 à l'autre, et peut être serré de manière réversible par tout moyen connu. Par exemple un moyen de blocage peut être utilisé, ou un simple noeud.A clamping device 20 is provided to clamp the rod 3 reversibly. The clamping device 20 comprises for example loops 21 disposed on the lateral 12 and medial 13, and a lace 22. The latter may comprise one or more strands. Of course, the lace 22 follows a path that leads alternately from one quarter 12, 13 to the other, and can be reversibly clamped by any known means. For example a blocking means can be used, or a simple node.

Le semelage externe 2 est décrit plus en détail à l'aide de la perspective selon la figure 2.The outer soleing 2 is described in more detail using the perspective according to the figure 2 .

De manière connue, le semelage 2 comprend une semelle de marche 30 prévue pour coopérer avec le sol. Cette semelle 30 s'étend longitudinalement de l'extrémité arrière 4 à l'extrémité avant 5, et transversalement du côté latéral 6 au côté médial 7. La semelle de marche 30 comprend une face d'usure 31. C'est bien sûr cette face 31 qui appuie sur le sol. De manière non limitative la face d'usure 31 est munie de crampons 32, lesquels forment un relief pour améliorer l'adhérence au sol. A l'opposé de la face d'usure 31, la semelle de marche 30 comprend une face de liaison 35. Celle-ci est destinée à être associée aux autres éléments du semelage 2, comme on le verra après.In known manner, the sole 2 comprises a tread 30 provided to cooperate with the ground. This sole 30 extends longitudinally from the rear end 4 to the front end 5, and transversely from the lateral side 6 to the medial side 7. The outsole 30 comprises a wear face 31. This is of course this face 31 which presses on the ground. In a nonlimiting manner the wear face 31 is provided with crampons 32, which form a relief to improve the adhesion to the ground. Opposite the wear face 31, the outsole 30 comprises a connecting face 35. This is intended to be associated with the other elements of the sole assembly 2, as will be seen later.

La semelle de marche 30 est réalisée à partir de tout matériau approprié. Par exemple la semelle de marche 30 comprend du caoutchouc, ou bien est fabriquée intégralement en caoutchouc. Cela favorise la résistance à l'usure, notamment par frottement. Le caoutchouc est également un matériau ayant des propriétés très élastiques.The outsole 30 is made from any suitable material. For example, the outsole 30 comprises rubber, or is made entirely of rubber. This promotes the resistance to wear, especially by friction. Rubber is also a material with very elastic properties.

Le semelage externe 2 comprend également une couche de renfort 40. Celle-ci s'étend depuis l'extrémité arrière 4 vers l'extrémité avant 5, et transversalement du côté latéral 6 au côté médial 7. La couche de renfort 40 comprend une face inférieure 41 tournée vers la semelle de marche 30, ainsi qu'une face supérieure 45 tournée vers la tige 3. La couche de renfort 40 comprend une partie arrière 48 qui s'étend sous le talon de l'utilisateur, ainsi qu'une partie avant 49 qui s'étend sous le métatarse ou sous le métatarse et les orteils. Les parties arrière 48 et avant 49 se prolongent l'une l'autre. De manière non limitative la partie avant 49 comprend une branche latérale 50 et une branche médiale 51, lesquelles forment une fourche orientée vers l'avant. Cette structure permet, comme on le verra mieux par la suite, une certaine indépendance de comportement des côtés latéral 6 et médial 7 de la chaussure. Cependant, on peut alternativement prévoir toute autre structure appropriée pour la couche de renfort 40. Par exemple, la partie avant 49 pourrait s'étendre de manière continue depuis le côté latéral 6 jusqu'au côté médial 7.The outer soleing 2 also comprises a reinforcing layer 40. This extends from the rear end 4 towards the front end 5, and transversely from the lateral side 6 to the medial side 7. The reinforcing layer 40 comprises one face bottom 41 turned towards the outsole 30, and an upper face 45 facing the rod 3. The reinforcing layer 40 comprises a rear portion 48 which extends under the heel of the user, and a portion before 49 which extends under the metatarsus or under the metatarsus and the toes. The rear portions 48 and before 49 extend one another. In a nonlimiting manner, the front portion 49 comprises a lateral branch 50 and a medial branch 51, which form a fork oriented towards the front. This structure allows, as will be seen later, a certain independence of behavior of the lateral 6 and medial sides 7 of the shoe. However, any other suitable structure for the reinforcing layer 40 may alternatively be provided. For example, the front portion 49 could extend continuously from the lateral side 6 to the medial side 7.

Pour sa construction, la couche de renfort 40 comprend un matériau sensiblement inextensible ou une ou plusieurs matières plastiques. Par exemple le polyuréthane, ou le polyamide, convient. Cela rend la couche de renfort 40 flexible et sensiblement inextensible. Ainsi le semelage 2 présente une certaine stabilité structurelle, tout en permettant un libre déroulement du pied.For its construction, the reinforcing layer 40 comprises a substantially inextensible material or one or more plastics. For example polyurethane, or polyamide, is suitable. This makes the reinforcing layer 40 flexible and substantially inextensible. Thus the sole 2 has a certain structural stability, while allowing free movement of the foot.

Selon l'invention une couche d'amortissement 60 prend place entre la semelle de marche 30 et la couche de renfort 40, et au moins une patte 61, 62, 64, 65 relie la semelle de marche 30 à la couche de renfort 40. Cela définit des zones souples et des zones plus rigides du semelage. Bien entendu l'amortissement est important dans les zones souples, lesquelles sont dépourvues de pattes. Par corollaire l'amortissement est réduit, voire absent, dans une zone munie d'une patte. L'invention apporte un certain confort là où c'est nécessaire, ainsi qu'une stabilité d'appui là où c'est également nécessaire. En d'autres termes une fonction spécifique est attribuée à différentes parties du semelage 2.According to the invention a damping layer 60 takes place between the outsole 30 and the reinforcing layer 40, and at least one lug 61, 62, 64, 65 connects the outsole 30 to the reinforcing layer 40. This defines soft areas and stiffer areas of the sole. Of course the damping is important in the soft areas, which have no legs. As a corollary, damping is reduced or absent in an area provided with a leg. The invention provides a certain comfort where it is needed, as well as support stability where it is also necessary. In other words, a specific function is assigned to different parts of the soleing 2.

Bien entendu c'est sa nature qui confère à la couche d'amortissement 60 ses propriétés mécaniques. Il est prévu que la couche d'amortissement 60 comprenne une mousse de matériau amortissant, tel qu'un éthyle-vinyle-acétate (EVA), ou encore une mousse de caoutchouc, ou tout équivalent. Les cellules de la mousse permettent à celle-ci de se déformer de manière réversible, notamment en compression. En conséquence la couche 60 amortit des impulsions ou des chocs.Of course it is its nature that gives the damping layer 60 its mechanical properties. It is intended that the cushioning layer 60 comprise a foam of damping material, such as an ethyl vinyl acetate (EVA), or a rubber foam, or any equivalent. The cells of the foam allow it to deform in a reversible manner, especially in compression. As a result, the layer 60 dampens pulses or shocks.

Selon la première forme de réalisation de l'invention la chaussure 1 comprend quatre pattes 61, 62, 64, 65 localisées vers l'avant, c'est-à-dire à hauteur des orteils et du métatarse. Plus précisément la chaussure 1 comprend une première patte latérale 61, une deuxième patte latérale 62, une première patte médiale 64, et une deuxième patte médiale 65. Les premières pattes latérale 61 et médiale 64 sont situées chacune au niveau des orteils. De manière non limitative, ces pattes 61, 64 sont en regard l'une de l'autre transversalement. Les deuxièmes pattes latérale 62 et médiale 65, quant à elles, sont situées au niveau du métatarse. Ces pattes 62, 65 sont elles aussi par exemple en regard l'une de l'autre transversalement. En fait les pattes 61, 62, 64, 65 sont disposées par paires orientées selon une direction transversale de la chaussure.According to the first embodiment of the invention the shoe 1 comprises four legs 61, 62, 64, 65 located forward, that is to say at the height of the toes and metatarsal. More specifically, the shoe 1 comprises a first lateral lug 61, a second lateral lug 62, a first medial lug 64, and a second medial lug 65. The first lateral lugs 61 and medial 64 are each located at the level of the toes. In a nonlimiting manner, these tabs 61, 64 are facing each other transversely. The second side legs 62 and medial 65, meanwhile, are located at the metatarsal level. These tabs 62, 65 are also for example facing each other transversely. In fact the tabs 61, 62, 64, 65 are arranged in pairs oriented in a transverse direction of the shoe.

Selon la première forme de réalisation, chaque patte 61, 62, 64, 65 est structurée de la même façon. Chaque patte 61, 62, 64, 65 comprend respectivement une première partie 71, 72, 74, 75 formant une languette, ainsi qu'une deuxième partie 81, 82, 84, 85 formant un socle. Une languette et un socle se prolongent l'une l'autre pour donner à une patte 61, 62, 64, 65 une forme de L. La languette s'étend depuis la couche de renfort 40. Par exemple la languette 71, 72, 74, 75 est perpendiculaire à la couche de renfort 40, et le socle 81, 82, 84, 85 est parallèle à cette même couche. Dans la forme de réalisation décrite, une languette et un socle forment une pièce monobloc. En fait chaque patte 61, 62, 64, 65 forme avec la partie avant 49 une pièce monobloc. Au total la couche de renfort 40, avec les parties arrière 48 et avant 49, ainsi que les pattes 61, 62, 64, 65 forment une pièce monobloc. Cela facilite la fabrication du semelage 2. Cette pièce est obtenue par tout procédé tel que le moulage, l'injection, ou autre. Une construction dans laquelle les pattes sont solidarisées à la couche de renfort, sans former avec celle-ci une pièce monobloc, peut également être envisagée. Ces pattes sont de préférence faites avec le même matériau que la couche de renfort.According to the first embodiment, each tab 61, 62, 64, 65 is structured in the same way. Each tab 61, 62, 64, 65 respectively comprises a first portion 71, 72, 74, 75 forming a tongue, and a second portion 81, 82, 84, 85 forming a base. A tab and a base extend one another to give a tab 61, 62, 64, 65 an L shape. The tab extends from the reinforcing layer 40. For example the tab 71, 72, 74, 75 is perpendicular to the reinforcing layer 40, and the base 81, 82, 84, 85 is parallel to this same layer. In the embodiment described, a tongue and a base form a single piece. In fact each lug 61, 62, 64, 65 forms with the front portion 49 a single piece. In total the reinforcing layer 40, with the rear portions 48 and 49 before, and the tabs 61, 62, 64, 65 form a single piece. This facilitates the manufacture of the 2. This part is obtained by any process such as molding, injection, or other. A construction in which the tabs are secured to the reinforcing layer, without forming with it a single piece, can also be considered. These tabs are preferably made of the same material as the reinforcing layer.

On remarque que chaque languette 71, 72, 74, 75 affleure un côté latéral 6 ou médial 7, et que chaque socle 81, 82, 84, 85 pénètre l'intérieur du semelage. En fait la couche d'amortissement 60 est structurée pour accueillir les pattes 61, 62, 64, 65. A cet effet la couche d'amortissement 60 présente une série d'encoches 91, 92, 94, 95 prévues chacune pour loger une patte 61, 62, 64, 65. Ainsi la couche d'amortissement présente une première encoche latérale 91, une deuxième encoche latérale 92, une première encoche médiale 94, et une deuxième encoche médiale 95. Bien entendu la première encoche latérale 91 accueille la première patte latérale 61, et ainsi de suite. Chaque encoche 91, 92, 94, 95 loge une patte 61, 62, 64, 65, c'est-à-dire une languette et un socle. En conséquence chaque languette affleure le côté 6, 7 de la chaussure où elle se trouve. Chaque languette 71, 72, 74, 75 borde la couche d'amortissement 60 transversalement. Cela rend la languette visible mais, surtout, optimise son action comme on le verra mieux après. Chaque socle quant à lui pénètre le semelage dans la couche d'amortissement 60, et au contact de la semelle de marche 30. C'est pourquoi chaque patte relie directement la couche de renfort 40 à la semelle de marche 30.Note that each tab 71, 72, 74, 75 is flush with a lateral side 6 or medial 7, and that each base 81, 82, 84, 85 penetrates the interior of the sole assembly. In fact the damping layer 60 is structured to accommodate the tabs 61, 62, 64, 65. For this purpose the damping layer 60 has a series of notches 91, 92, 94, 95 each provided for housing a leg 61, 62, 64, 65. Thus, the damping layer has a first lateral notch 91, a second lateral notch 92, a first medial notch 94, and a second medial notch 95. Naturally, the first lateral notch 91 accommodates the first side tab 61, and so on. Each notch 91, 92, 94, 95 houses a tab 61, 62, 64, 65, that is to say a tongue and a base. As a result each tab is flush with the side 6, 7 of the shoe where it is located. Each tongue 71, 72, 74, 75 borders the damping layer 60 transversely. This makes the tab visible but, above all, optimizes its action as we will see later. Each base itself penetrates the sole in the cushioning layer 60, and in contact with the outsole 30. This is why each leg directly connects the reinforcing layer 40 to the outsole 30.

La semelle de marche 30, la couche d'amortissement 60 et la couche de renfort 40 sont solidarisées les unes aux autres par tout moyen, comme un collage ou tout équivalent. De manière complémentaire il peut être prévu dans le semelage externe une couche de liaison 100, laquelle prend place entre la couche de renfort 40 et la tige. Cette couche 100, liée à la couche de renfort 40 et, entre les branches 50, 51, à la couche d'amortissement 60, sert elle aussi à accroître le confort de la chaussure. Cette couche 100 n'est pas obligatoire. Elle 100 peut également comprendre une mousse de matière plastique amortissante, telle qu'un éthyle-vinyle-acétate, ou une mousse d'une autre matière.The outsole 30, the damping layer 60 and the reinforcing layer 40 are secured to each other by any means, such as gluing or any equivalent. In a complementary manner, a connection layer 100 can be provided in the outer soleplate, which layer takes place between the reinforcing layer 40 and the upper. This layer 100, bonded to the reinforcing layer 40 and, between the branches 50, 51, the cushioning layer 60, is also used to increase the comfort of the shoe. This layer 100 is not mandatory. It may also include a cushioning plastic foam, such as an ethyl vinyl acetate, or a foam of another material.

Ainsi selon la première forme de réalisation de l'invention, le semelage 2 comprend soit trois 30, 40, 60, soit quatre 30, 40, 60, 100 couches. Ces nombres de sont pas limitatifs : une ou plusieurs couches pourraient être ajoutées, en étant intercalées ou superposées aux autres.Thus according to the first embodiment of the invention, the sole assembly 2 comprises either three 30, 40, 60 or four 30, 40, 60, 100 layers. These numbers are not limiting: one or more layers could be added, being interposed or superimposed on the others.

Le rôle des constituants du semelage 2 est explicité ci-après, notamment à l'aide des figures 3 à 10.The role of the constituents of the sole assembly 2 is explained below, in particular with the help of Figures 3 to 10 .

Tout d'abord les figures 3 et 4 visualisent bien l'emplacement des pattes 61, 62, 64, 65 le long de la chaussure. Les premières pattes latérale 61 et médiale 64 sont situées au niveau des orteils, en avant des articulations qui lient les orteils au métatarse. Les deuxièmes pattes latérale 62 et médiale 65, quant à elles, sont situées au niveau du métatarse, en arrière des articulations qui lient les orteils au métatarse. En conséquence ces articulations sont situées dans une zone du semelage 2 exempte de pattes. Autrement dit ces articulations sont situées dans une zone du semelage où l'amortissement est important. Cela protège les articulations des impulsions qui sollicitent le semelage. Cette disposition convient bien aux chaussures destinées à la course à pieds, laquelle génère des impulsions dynamiques importantes au niveau des articulations.First of all, Figures 3 and 4 visualize the location of the legs 61, 62, 64, 65 along the shoe. The first lateral leg 61 and medial 64 are located at the toes, in front of the joints that link the toes to the metatarsal. The second lateral legs 62 and medial 65, meanwhile, are located at the metatarsal level, behind the joints that link the toes to the metatarsal. As a result, these joints are located in an area of the sole assembly 2 free of legs. In other words, these joints are located in an area of the assembly where the depreciation is important. This protects the joints from impulses that solicit the sole. This arrangement is well suited to shoes intended for running, which generates significant dynamic impulses at the joints.

D'une manière générale les impulsions naissent pendant la marche. Lors du déroulement du pied, comme on le voit en passant de la figure 3 à la figure 4, l'appui de la chaussure sur le sol G varie. En fait la chaussure 1 passe alternativement d'une situation où le talon et la zone du métatarse sont en appui, comme sur la figure 3, à une situation où seule la zone des articulations entre les orteils et le métatarse est en appui, comme sur la figure 4.In a general way the pulses are born during the march. During the course of the foot, as seen from the figure 3 to the figure 4 , the support of the shoe on the ground G varies. In fact the shoe 1 alternately passes from a situation where the heel and the metatarsal area are supported, as on the figure 3 , in a situation where only the area of the joints between the toes and the metatarsus is supported, as on the figure 4 .

Une impulsion qui tend à écraser le semelage 2 au niveau des articulations, entre les orteils et le métatarse, est amortie comme on le comprend à l'aide des figures 5 et 6. En fait l'amortissement se fait dans le sens de l'épaisseur du semelage 2. A la figure 5 le semelage 2 est dans un état nominal : il ne subit pas d'impulsion, mais supporte une charge liée au poids de l'utilisateur. C'est pourquoi la couche d'amortissement 60 est faiblement, voire pas du tout, comprimée. Par contre la figure 6 schématise une compression selon la flèche D1. Cette compression résulte par exemple d'un appui lié à une impulsion. Cela signifie que la compression est brève. Dans ce cas la couche d'amortissement 60 s'aplatit dans le sens de D1, et s'élargit dans le sens des flèches W1, W2. Ces déformations sont synonymes d'absorption des chocs et donc de confort pour l'utilisateur.An impulse that tends to crush the sole 2 at the joints, between the toes and the metatarsal, is damped as we understand it with the help of Figures 5 and 6 . In fact the damping is in the direction of the thickness of the sole assembly 2. At the figure 5 the sole assembly 2 is in a nominal state: it does not undergo a pulse, but supports a load related to the weight of the user. This is why the damping layer 60 is weakly, if at all, compressed. By cons the figure 6 schematizes a compression according to the arrow D1. This compression results for example from a support related to a pulse. This means that the compression is brief. In this case the damping layer 60 flattens in the direction of D1, and widens in the direction of the arrows W1, W2. These deformations are synonymous with shock absorption and therefore comfort for the user.

Le corollaire est que les zones du semelage 2 qui sont munies de pattes 61, 62, 64, 65 donnent de la stabilité aux appuis. En effet, comme on le comprend à l'aide des figures 7 et 8, les pattes 62, 65 d'une zone s'opposent à la compression selon l'épaisseur et à l'élargissement selon la largeur du semelage. Chaque patte 61, 62, 64, 65, avec sa languette et son socle, s'oppose à une déformation de la couche d'amortissement 60. Bien sûr cette opposition est localisée longitudinalement à la hauteur des pattes, et localisée transversalement au niveau des branches 50, 51 de la couche de renfort 40.The corollary is that the areas of the sole assembly 2 which are provided with tabs 61, 62, 64, 65 give stability to the supports. Indeed, as we understand it with the help of Figures 7 and 8 , the tabs 62, 65 of an area oppose the compression according to the thickness and widening according to the width of the sole. Each tab 61, 62, 64, 65, with its tongue and its base, is opposed to a deformation of the damping layer 60. Of course this opposition is located longitudinally at the height of the legs, and located transversely at the level of branches 50, 51 of the reinforcing layer 40.

Il s'ensuit que le semelage 2 apporte du confort là où c'est nécessaire, ainsi qu'une grande précision dans la transmission des impulsions de conduite ou dans le passage des informations sensorielles là où c'est également nécessaire. L'invention spécialise différentes zones du semelage 2 en ce qui concerne les fonctions qu'il remplit. On remarque que pour la première forme de réalisation, la stabilité est recherchée au niveau du métatarse et des orteils, et que le confort est recherché au niveau des articulations entre le métatarse et les orteils.It follows that the sole assembly 2 brings comfort where it is needed, as well as a high precision in the transmission of driving impulses or in the passage of sensory information where it is also necessary. The invention specializes different areas of the sole assembly 2 with respect to the functions it fulfills. Note that for the first embodiment, stability is sought at the metatarsal and toes, and that comfort is sought at the joints between the metatarsus and toes.

L'invention cherche aussi à réduire la fatigue de l'utilisateur, comme on le comprend par les schémas selon les figures 9 et 10. Ces schémas sont corrélés respectivement aux figures 3 et 4. On retrouve donc le semelage 2 dans un mouvement de déroulement. Lorsque le semelage 2 est à plat sur le sol G, en rapport avec la figure 3, la semelle de marche 30 présente une longueur minimale dans sa portion comprise entre la première patte latérale 61 et la deuxième patte latérale 62. La longueur de semelle est également minimale entre la première patte médiale 64 et la deuxième patte médiale 65. Lorsque le semelage 2 est en appui sur l'avant, en rapport avec la figure 4, sa convexité s'accentue. En conséquence la semelle de marche 30 s'allonge longitudinalement entre deux pattes situées d'un même côté 6, 7. La semelle 30 s'allonge donc entre les pattes latérales 61, 62, ainsi qu'entre les pattes médiales 64, 65. Bien entendu la semelle 30 s'allonge de manière réversible. Elle 30 se comporte comme un ressort que l'on tend et, de ce fait, accumule de l'énergie. En pratique une partie de l'énergie, fournie par l'utilisateur pour prendre appui à l'avant, est accumulée par la semelle 30. Cette accumulation est possible parce que deux pattes situées d'un même côté, et donc leurs socles, s'éloignent l'une de l'autre. Comme ces socles sont solidarisés à la semelle 30, celle-ci se retrouve tendue quand la convexité du semelage augmente.The invention also seeks to reduce the fatigue of the user, as understood by the diagrams according to the Figures 9 and 10 . These patterns are correlated respectively with Figures 3 and 4 . So we find the sole 2 in a movement of unfolding. When the sole 2 is flat on the ground G, in connection with the figure 3 , the walking sole 30 has a minimum length in its portion between the first lateral lug 61 and the second lateral lug 62. The sole length is also minimal between the first medial lug 64 and the second medial lug 65. When the sole 2 is supported on the front, in connection with the figure 4 its convexity is accentuated. As a result, the outsole 30 extends longitudinally between two lugs situated on the same side 6, 7. The sole 30 therefore extends between the lateral lugs 61, 62 and between the medial legs 64, 65. Of course the sole 30 extends reversibly. It behaves like a spring that is stretched and, as a result, accumulates energy. In practice a portion of the energy, provided by the user to support the front, is accumulated by the sole 30. This accumulation is possible because two legs on the same side, and therefore their bases, s 'move away from each other. As these bases are secured to the sole 30, it is found stretched when the convexity of the sole increases.

Du fait de l'élasticité de la semelle de marche le semelage tend à retrouver sa forme naturelle à la fin du mouvement de déroulement. C'est l'action de la semelle de marche 30 qui réduit la convexité et qui, en même temps, propulse la chaussure 1 vers l'avant. L'élasticité de la semelle de marche 30, exploitée par la couche de renfort 40 et les pattes 61, 62, 64, 65, permet une réduction de fatigue pour une foulée équivalente. On remarque que ce phénomène est possible parce que la semelle 30 est élastique, parce que des pattes relient la couche de renfort 40 à la semelle 30, mais aussi parce qu'un écart est ménagé entre la semelle 30 et la couche de renfort 40. Bien entendu, cet écart dépend de l'épaisseur de la couche d'amortissement 60. Plus celle-ci est épaisse, plus la mise en tension de la semelle 30 est élevée.Due to the elasticity of the outsole the sole tends to return to its natural shape at the end of the unwinding movement. It is the action of the outsole 30 which reduces the convexity and which, at the same time, propels the shoe 1 forward. The elasticity of the outsole 30, exploited by the reinforcing layer 40 and the tabs 61, 62, 64, 65, allows a reduction of fatigue for an equivalent stride. Note that this phenomenon is possible because the sole 30 is elastic, because legs connect the reinforcing layer 40 to the sole 30, but also because a gap is formed between the sole 30 and the reinforcing layer 40. Of course, this difference depends on the thickness of the damping layer 60. The thicker the latter, the greater the tensioning of the sole 30 is high.

Les autres formes de réalisation de l'invention sont présentées ci-après à l'aide des figures 11 à 14. Pour des raisons de commodité, les éléments communs avec la première forme sont désignés par les mêmes références.The other embodiments of the invention are presented hereinafter with the aid of Figures 11 to 14 . For the sake of convenience, the elements common with the first form are designated by the same references.

La deuxième forme de réalisation est présentée à l'aide des figures 11 et 12. On retrouve une chaussure 101 qui comprend notamment un semelage 102 et une tige haute 103. Cette dernière est dite haute car elle couvre le pied et le dessus de la cheville. La chaussure 101 présente un talon 104, une pointe 105, un côté latéral 106 et un côté médial 107, ainsi qu'un dispositif de serrage 120. Le semelage 102 comprend une semelle de marche 130, une couche de renfort 140, une couche d'amortissement 160, et une couche de liaison 200.The second embodiment is presented using the figures 11 and 12 . There is a shoe 101 which includes a sole 102 and a high shaft 103. The latter is said high because it covers the foot and the top of the ankle. The shoe 101 has a heel 104, a point 105, a lateral side 106 and a medial side 107, as well as a clamping device 120. The sole assembly 102 comprises a tread 130, a reinforcing layer 140, a diaper 160, and a bonding layer 200.

Ce qui est spécifique à la deuxième forme de réalisation, c'est le nombre de pattes. Ainsi la chaussure 101 comprend six pattes localisées à l'avant, à savoir une première patte latérale 161, une deuxième patte latérale 162, une troisième patte latérale 163, et une première patte médiale 164, une deuxième patte médiale 165, et une troisième patte médiale 166. Les premières 161, 164, deuxièmes 162, 165 et troisièmes 163, 166 pattes sont respectivement en regard les unes des autres transversalement.What is specific to the second embodiment is the number of legs. Thus, the boot 101 comprises six lugs located at the front, namely a first lateral lug 161, a second lateral lug 162, a third lateral lug 163, and a first medial lug 164, a second medial lug 165, and a third lug medial 166. The first 161, 164, second 162, 165 and third 163, 166 tabs are respectively facing each other transversely.

Comme pour la première forme de réalisation, la couche d'amortissement 160 présente des première 191, deuxième 192 et troisième 193 encoches latérales, ainsi que des première 194, deuxième 195 et troisième 196 encoches médiales. Bien entendu les encoches accueillent les pattes. Etant donné que les structures et les fonctions des éléments de la deuxième forme sont similaires ou identiques à celles de la première forme, elles ne sont pas décrites plus en détail. On remarque simplement que la partie avant 149, de la couche de renfort 140, porte un nombre plus élevé de pattes. Ainsi le semelage 102 de la chaussure 101 présente, dans sa partie avant, une alternance de zones souples et de zones rigides, dont trois zones rigides. Ces dernières sont délimitées par l'étendue des pattes. On peut dire aussi que les pattes se succèdent selon un pas relativement serré. Cette disposition convient bien à la marche en montagne, au cours de laquelle l'avant de la chaussure appuie sur des rochers en saillie. L'alternance des zones souples et rigides permet au semelage de s'adapter facilement aux inégalités de relief du sol. Cela améliore la stabilité de la chaussure.As for the first embodiment, the damping layer 160 has first 191, second 192 and third 193 side notches, and first 194, second 195 and third 196 medial notches. Of course the notches welcome the legs. Since the structures and functions of the elements of the second form are similar or identical to those of the first form, they are not described in more detail. It is simply noted that the front portion 149 of the reinforcing layer 140 carries a higher number of legs. Thus the sole 102 of the shoe 101 has, in its front part, an alternation of soft areas and rigid areas, including three rigid areas. These are delimited by the extent of the legs. We can also say that the legs follow one another in a relatively tight pace. This arrangement is well suited for walking in the mountains, during which the front of the shoe rests on protruding rocks. The alternation of the flexible and rigid zones makes it easy for the sole to adapt to the unevenness of the ground. This improves the stability of the shoe.

La troisième forme de réalisation est présentée à l'aide des figures 13 et 14. Il s'agit en fait d'une variante de réalisation de la semelle de marche 30. Celle-ci comprend plusieurs parties, à savoir une couronne 210 et un coeur 211. La couronne s'étend en longueur du talon 4 à la pointe 5, et en largeur du côté latéral 6 au côté médial 7. La couronne comprend une matière souple extensible, tel que du caoutchouc ou tout équivalent. Le coeur 211 quant à lui comprend une âme 212 en toile, laquelle 212 porte des crampons 32. L'âme 212 est flexible mais très peu, voire pas du tout, extensible. Ainsi l'effet d'accumulation et de restitution d'énergie est localisé au niveau des côtés 6, 7 de la chaussure. On remarque d'ailleurs que les pattes sont en liaison avec la couronneThe third embodiment is presented using the figures 13 and 14 . It is in fact an alternative embodiment of the outsole 30. It comprises several parts, namely a crown 210 and a heart 211. The crown extends in length from the heel 4 to the tip 5 , and in width from the lateral side 6 to the medial side 7. The crown comprises an extensible flexible material, such as rubber or any equivalent. The core 211 in turn comprises a web core 212, which 212 carries crampons 32. The core 212 is flexible but very little, if any, extensible. Thus the effect of accumulation and energy restoration is located at the sides 6, 7 of the shoe. Note also that the legs are in connection with the crown

On remarque que la couronne 210 borde le coeur 211. Cela donne une continuité géométrique à la semelle 30.Note that the crown 210 borders the heart 211. This gives a geometric continuity to the sole 30.

Dans tous les cas l'invention est réalisée à partir de matériaux et selon des techniques de mise en oeuvre connus de l'homme du métier.In all cases the invention is made from materials and according to processing techniques known to those skilled in the art.

Bien entendu l'invention n'est pas limitée aux formes de réalisation ci-avant décrites, et comprend tous les équivalents techniques pouvant entrer dans la portée des revendications qui vont suivre.Naturally, the invention is not limited to the embodiments described above, and includes all technical equivalents that fall within the scope of the claims that follow.

En particulier, même si les pattes sont localisées au niveau de la partie avant 49 de la couche de renfort 40, 140, le nombre de pattes peut être différent de quatre ou de six. Des pattes peuvent être disposées d'un seul côté de la chaussure, qu'il soit latéral ou médial. Des pattes peuvent aussi être disposées vers le milieu de la chaussure, c'est-à-dire à mi-chemin entre le bord latéral et le bord médial.In particular, even if the tabs are located at the front portion 49 of the backing layer 40, 140, the number of legs may be different from four or six. Legs can be arranged on one side of the shoe, whether lateral or medial. Legs may also be disposed toward the middle of the shoe, that is, midway between the side edge and the medial edge.

Bien entendu, toute structure peut être prévue pour la fabrication des pattes. Par exemple, une patte ne forme pas nécessairement une pièce monobloc avec la couche de renfort. Dans ce cas la patte est une pièce assemblée du semelage. La patte peut présenter une structure en forme de C, ou tout équivalent de forme qui facilite la liaison entre la semelle de marche et la couche de renfort.Of course, any structure can be provided for the manufacture of the legs. For example, a tab does not necessarily form a one-piece piece with the reinforcing layer. In this case the leg is an assembled part of the sole. The tab may have a C-shaped structure, or equivalent form that facilitates the connection between the outsole and the reinforcing layer.

Claims (14)

Chaussure (1, 101) qui comprend un semelage externe (2, 102), le semelage (2, 102) comprenant une semelle de marche (30, 130) et une couche de renfort (40, 140),
caractérisée par le fait qu'une couche d'amortissement (60, 160) prend place entre la semelle de marche (30, 130) et la couche de renfort (40, 140), et par le fait qu'au moins une patte (61, 62, 64, 65, 161 à 166) relie la semelle de marche (30, 130) à la couche de renfort (40, 140).
Shoe (1, 101) which comprises an outer sole (2, 102), the sole (2, 102) comprising a tread sole (30, 130) and a reinforcing layer (40, 140),
characterized in that a damping layer (60, 160) is provided between the sole (30, 130) and the reinforcing layer (40, 140), and that at least one leg ( 61, 62, 64, 65, 161 to 166) connects the outsole (30, 130) to the reinforcing layer (40, 140).
Chaussure (1, 101) selon la revendication 1, caractérisée par le fait que la couche de renfort (40, 140) comprend une partie avant (49), et par le fait que les pattes (61, 62, 64, 65, 161 à 166) sont localisées au niveau de la partie avant (49).Shoe (1, 101) according to claim 1, characterized in that the reinforcing layer (40, 140) comprises a front part (49), and in that the legs (61, 62, 64, 65, 161 166) are located at the front portion (49). Chaussure (1, 101) selon la revendication 2, caractérisée par le fait que la partie avant (49) comprend une branche latérale (50) et une branche médiale (51), lesquelles forment une fourche orientée vers l'avant.Shoe (1, 101) according to claim 2, characterized in that the front portion (49) comprises a lateral branch (50) and a medial branch (51), which form a fork oriented towards the front. Chaussure (1, 101) selon l'une des revendications 1 à 3, caractérisée par le fait que chaque patte (61, 62, 64, 65, 161 à 166) comprend une première partie (71, 72, 74, 75) formant une languette, ainsi qu'une deuxième partie (81, 82, 84, 85) formant un socle.Shoe (1, 101) according to one of claims 1 to 3, characterized in that each lug (61, 62, 64, 65, 161 to 166) comprises a first portion (71, 72, 74, 75) forming a tongue and a second portion (81, 82, 84, 85) forming a base. Chaussure (1, 101) selon la revendication 4, caractérisée par le fait qu'une languette (71, 72, 74, 75) et un socle (81, 82, 84, 85) se prolongent l'une l'autre, la languette s'étendant depuis la couche de renfort (40, 140), et le socle étant parallèle à cette même couche (40, 140), le socle pénétrant le semelage (2, 102) dans la couche d'amortissement (60, 160) et au contact de la semelle de marche (30, 130).Shoe (1, 101) according to claim 4, characterized in that a tongue (71, 72, 74, 75) and a base (81, 82, 84, 85) extend one another, the tongue extending from the reinforcing layer (40, 140), and the base being parallel to the same layer (40, 140), the base penetrating the sole (2, 102) in the damping layer (60, 160). ) and in contact with the outsole (30, 130). Chaussure (1, 101) selon l'une des revendications 2 à 5, caractérisée par le fait que la couche de renfort (40, 140) comprend une partie arrière (48) et forme, avec les parties arrière (48) et avant (49), ainsi que les pattes (61, 62, 64, 65, 161 à 166), une pièce monobloc.Shoe (1, 101) according to one of claims 2 to 5, characterized in that the reinforcing layer (40, 140) comprises a rear portion (48) and forms, with the rear portions (48) and front ( 49), as well as the tabs (61, 62, 64, 65, 161 to 166), a single piece. Chaussure (1, 101) selon l'une des revendications 1 à 6, caractérisée par le fait que la couche d'amortissement (60, 160) présente une série d'encoches (61, 62, 64, 65, 191 à 196) prévues chacune pour loger une patte (61, 62, 64, 65, 161 à 166).Shoe (1, 101) according to one of claims 1 to 6, characterized in that the damping layer (60, 160) has a series of notches (61, 62, 64, 65, 191 to 196) each provided for housing a tab (61, 62, 64, 65, 161 to 166). Chaussure (1) selon l'une des revendications 1 à 7, caractérisée par le fait qu'elle comprend au moins quatre pattes (61, 62, 64, 65).Shoe (1) according to one of claims 1 to 7, characterized in that it comprises at least four tabs (61, 62, 64, 65). Chaussure (1) selon la revendication 8, caractérisée par le fait qu'une première patte latérale (61) et une première patte médiale (64) sont situées au niveau des orteils, et par le fait qu'une deuxième patte latérale (62) et une deuxième patte médiale (65) sont situées au niveau du métatarse.Shoe (1) according to claim 8, characterized in that a first lateral lug (61) and a first medial lug (64) are situated at the level of the toes, and in that a second lateral lug (62) and a second medial leg (65) are located at the metatarsal level. Chaussure (101) selon l'une des revendications 1 à 7, caractérisée par le fait qu'elle comprend au moins six pattes (161 à 166) localisées à l'avant.Shoe (101) according to one of claims 1 to 7, characterized in that it comprises at least six legs (161 to 166) located at the front. Chaussure (1, 101) selon l'une des revendications 1 à 10, caractérisée par le fait que les pattes sont disposées par paires orientées selon une direction transversale de la chaussure.Shoe (1, 101) according to one of claims 1 to 10, characterized in that the tabs are arranged in pairs oriented in a transverse direction of the shoe. Chaussure (1, 101) selon l'une des revendications 1 à 11, caractérisée par le fait que la couche d'amortissement (60, 160) comprend une mousse de matériau amortissant tel que de l'EVA, et par le fait que la couche de renfort (40, 140) comprend un matériau sensiblement inextensible.Shoe (1, 101) according to one of claims 1 to 11, characterized in that the damping layer (60, 160) comprises a foam of damping material such as the EVA, and in that the reinforcing layer (40, 140) comprises a substantially inextensible material. Chaussure (1, 101) selon l'une des revendications 1 à 12, caractérisée par le fait que le semelage (2, 102) et la tige (3, 103) sont relativement souples.Shoe (1, 101) according to one of claims 1 to 12, characterized in that the sole (2, 102) and the rod (3, 103) are relatively flexible. Chaussure (1, 101) selon l'une des revendications 1 à 13, caractérisée par le fait que le semelage (2, 102) comprend la semelle de marche (30, 130), la couche d'amortissement (60, 160), la couche de renfort (40, 140), et une couche de liaison (100, 200).Shoe (1, 101) according to one of claims 1 to 13, characterized in that the sole (2, 102) comprises the sole (30, 130), the damping layer (60, 160), the reinforcing layer (40, 140), and a tie layer (100, 200).
EP09005560A 2008-06-25 2009-04-21 Shoe with improved bottom assembly Ceased EP2138063A1 (en)

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US20090320330A1 (en) 2009-12-31

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