Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
  • A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
  • A43B13/12—Soles with several layers of different materials
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B21/00—Heels; Top-pieces or top-lifts
  • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
  • A43B21/26—Resilient heels

Definitions

• Running shoes are generally designed with cushioning means, in particular at the heel, to cushion the repetitive shocks occurring during the stride or in the places which are the most stressed by the shocks, and avoid micro- trauma to the user's joints.
• the object of the present invention is to remedy these drawbacks and to provide a shoe, in particular a running shoe, comprising a suitable sole assembly making it possible to improve the grip of the shoe on uneven terrain, on slopes, on slopes and also making it possible to cushion the accidents and uneven ground.
• Another object of the present invention is also to avoid the problems due to excessive pronation or supination of the foot of the user.
• the sole assembly will react to any effort exerted essentially in a vertical direction either on the medial side or on the lateral side of said sole assembly, and will adapt perfectly to a configuration on the slope on the ground, or to any roughness of the latter in a direction transverse to the direction of travel.
• each elastic element has a pin shape extending in the transverse direction of the shoe between the upper plate and the lower plate.
• the two pins have a common branch, which improves the homogeneity and the stability of the sole assembly.
• the external sole assembly comprises in the heel area an elastic element in the form of a Z (or inverted Z) extending transversely to the longitudinal direction of the shoe and capable of responding to the stresses exerted either on an edial side, either on a lateral side of the shoe.
• FIG. 1 is a rear perspective view of a sole portion according to the invention incorporated in a shoe
• FIG. 2 is a side view of the sole portion of FIG. 1,
• FIG. 3 is a cross-sectional view of a sole assembly according to the prior art on a slope surface
• FIG. 4 is a cross-sectional view of a sole assembly in accordance with FIGS. 1 and 2,
• This plate 10 is made of a substantially rigid and elastic material such as a composite based on woven or nonwoven fibers such as glass fiber, carbon, poly-paraphenylene-terephthalamide (KEVLAR®), metallic fibers, etc. , and the matrix of which is a thinner or thermoplastic polymer resin.
• a substantially rigid and elastic material such as a composite based on woven or nonwoven fibers such as glass fiber, carbon, poly-paraphenylene-terephthalamide (KEVLAR®), metallic fibers, etc.
• KEVLAR® poly-paraphenylene-terephthalamide
• metallic fibers etc.
• the matrix of which is a thinner or thermoplastic polymer resin.
• fibers that can be used in these composites, mention may be made of those given in the table below which mentions the type of weaving plies and the mechanical characteristics of these networks or fibrous plies.
• the outer sole assembly comprises in the heel area an elastic element 50, 60 in the form of an Z or an inverted Z extending transversely to the longitudinal direction L of the shoe and capable of responding to the stresses exerted either on a medial side, or on a lateral side of the shoe.
• each upper 20 and lower 30 plate respectively is filled with a damping element or material 75, 76 of foam type or the like and for example of foam, EN A, polyethylene, polyurethane ... etc.
• the density of the foam may be different on the medial side and lateral side depending on the desired effect.
• 75 will be called the damping element associated with the side pin 50, and 76 the damping element associated with the medial pin 60.
• the damping element 76 located on the lateral side will be rather shock absorbing while the damping element 75 situated on the medial side will be more elastic since it is the damping element 76 situated on the lateral side which will be compressed by the deformation of the medial pin 60 during this impact.
• FIG. 3 illustrates the behavior of a traditional sole assembly consisting of an intermediate sole 100 and an external sole 101 in the event of a slope.
• the midsole 100 being of a homogeneous, relatively rigid material, no adaptation to the slope is possible and the support of the foot materialized in the figure by the upper surface 102 of the sole is found perpendicular to the slope of the ground T and therefore not horizontal, hence the risk of injury, sprains, etc.
• the double pin 50, 60 in the transverse direction according to the invention therefore makes it possible to compensate for the asymmetrical forces occurring in the transverse direction of the sole assembly during use.
• the behavior of the sole assembly according to the invention is similar in the event of roughness (pebbles, etc.) being situated more lateral or medial side as illustrated by FIGS. 7 and 8.
• the pins 50, 60 make it possible to compensate for the unevenness of the ground and to guarantee a substantially horizontal support for the foot.
• the damping element 76 can be chosen to be more damping than the element 75 and the associated pin 60 will possibly be less stiff than the pin 50 to allow maximum shock absorption to be obtained during the impact of sowing with the soil, which generally occurs on the lateral side.
• Such a construction also makes it possible to avoid the phenomenon of hyper pronation on impact of the heel.
• the damping elements 75, 76 can also be chosen in the form of interchangeable blocks according to the weight of the user, running speed, shape of the terrain, etc.
• FIG. 9 illustrates another embodiment of the invention in which additional elastic tabs 80 extend transversely from the upper plate 20, respectively lower 30 to the transverse branch 40. The end of these elastic tabs 80 is free and slides on said transverse branch 40, These elastic tabs 80 are used to give the sole assembly additional stability in the transverse direction, without interfering with the operation of the double pin 50, 60.
• the plate 10 is integral with the upper plate 20 and made of the same material as the latter.
• a plate 10 extending substantially over the entire length of the sole assembly also provides the torsional rigidity and stability in the desired transverse direction and therefore constitutes a kind of chassis preventing overall deformation of the sole assembly.
• each pin 50, 60 can be produced independently and be assembled with the other pin in the final phase.
• the heel elastic block 50, 60 can be provided independently of any elastic plate 10, in the case where only the transverse elasticity effect is sought at the heel.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=28686316

Family Applications (1)

Country Status (4)

Families Citing this family (5)

Family Cites Families (5)

• 2002
  • 2002-04-19 FR FR0205101A patent/FR2838613B1/fr not_active Expired - Lifetime
• 2003
  • 2003-04-03 WO PCT/FR2003/001042 patent/WO2003088777A2/fr not_active Application Discontinuation
  • 2003-04-03 EP EP03740558A patent/EP1496763A2/de not_active Withdrawn
  • 2003-04-03 AU AU2003262419A patent/AU2003262419A1/en not_active Abandoned

Non-Patent Citations (1)

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