EP2247208A1 - Crampon de traction amélioré pour sports de plein air - Google Patents

Crampon de traction amélioré pour sports de plein air

Info

Publication number
EP2247208A1
EP2247208A1 EP09715301A EP09715301A EP2247208A1 EP 2247208 A1 EP2247208 A1 EP 2247208A1 EP 09715301 A EP09715301 A EP 09715301A EP 09715301 A EP09715301 A EP 09715301A EP 2247208 A1 EP2247208 A1 EP 2247208A1
Authority
EP
European Patent Office
Prior art keywords
hub
cleat
shoe
stud
sole
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.)
Withdrawn
Application number
EP09715301A
Other languages
German (de)
English (en)
Other versions
EP2247208A4 (fr
Inventor
Rand J. Krikorian
John Robert Burt
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.)
Softspikes LLC
Original Assignee
Softspikes LLC
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 Softspikes LLC filed Critical Softspikes LLC
Publication of EP2247208A1 publication Critical patent/EP2247208A1/fr
Publication of EP2247208A4 publication Critical patent/EP2247208A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A43C15/161—Studs or cleats for football or like boots characterised by the attachment to the sole
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A43C15/162—Studs or cleats for football or like boots characterised by the shape
    • A43C15/164—Studs or cleats for football or like boots characterised by the shape having a circular cross section
    • A43C15/165—Studs or cleats for football or like boots characterised by the shape having a circular cross section pointed or conical, e.g. calks, spikes, pins
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A43C15/162—Studs or cleats for football or like boots characterised by the shape
    • A43C15/164—Studs or cleats for football or like boots characterised by the shape having a circular cross section
    • A43C15/167—Studs or cleats for football or like boots characterised by the shape having a circular cross section frusto-conical or cylindrical
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A43C15/168—Studs or cleats for football or like boots with resilient means, e.g. shock absorbing means

Definitions

  • the present invention pertains to footwear cleats for field sports and, more particularly, to improvements in such cleats that result in improved traction without sacrificing running speed.
  • Footwear cleats used in soccer, rugby, lacrosse, American football and other field sports typically take the form of individual replaceable hard plastic or metal studs that threadedly engage respective receptacles mounted in the outsole of an athletic shoe.
  • the studs typically range in length from ten millimeters to eighteen millimeters.
  • longer studs are more desirable because they penetrate the ground more deeply to provide better traction. That is, it is the surface area of the stud in contact with the sod (i.e., the turf and top soil) below the ground level that engages the sod for traction during a push-off for a running step or during an attempt to stop. Therefore, more stud surface area makes contact with the sod as penetration into the sod increases.
  • a highly efficient type of golf cleat for this purpose provides dynamic traction wherein traction elements on the cleat flex under the load of the wearer's weight and, in doing so, provide traction without penetrating the ground.
  • dynamic traction cleats may be found, for example, in U. S. Patent Nos. 6,209,230, 6,305,104 and 7,040,043, the disclosures of which are incorporated herein by reference in their entireties.
  • cleats which take the form of a hub with a connector such as a threaded shaft extending from the hub top surface that can be selectively secured to a mating connector mounted in a golf shoe outsole.
  • Plural flexible traction elements extend generally downward and outward from the hub periphery to engage grass blades and turf, and thereby provide traction, as the traction elements flex under the weight of the wearer.
  • a cleat for use with an athletic shoe comprises a hub, a stud of substantially non-flexible material and extending downwardly and away from a lower surface of the hub, a cleat connector extending upwardly and from an upper surface of the hub and configured to engage a shoe-mounted mating connector disposed on a sole of the shoe, the upper surface opposing the lower surface of the hub, and at least one dynamic traction element extending downwardly from the lower surface of the hub and adapted to flex upwardly when the cleat is connected to a shoe and the at least one dynamic traction element is forced downwardly to contact a ground surface due to a weight load applied to a shoe.
  • the distal end of the stud extends further from the lower surface of the hub than the distal end of each unflexed dynamic traction element such that, when the shoe to which the cleat is connected is forced downward toward the ground surface, the stud contacts and/or begins to penetrate the ground surface to provide initial traction before each dynamic traction element makes contact with the ground surface.
  • Fig. 1 is a side view in elevation of an example embodiment of a cleat in accordance with the present invention.
  • Fig. 2 is a bottom view in plan of the cleat of Fig. 1.
  • Fig. 3 is a view in perspective including the top surface of the cleat of Fig. 1.
  • Fig. 4 is a view in perspective of the stud for the cleat of Fig. 1.
  • Fig. 5 is a top view in plan of the body part including hub for the cleat of Fig. 1.
  • Fig. 6 is a side view in elevation of a modified version of the cleat of Fig. 1 including a stud having a greater axial dimension.
  • Fig. 7 is a top view in plan of a modified cleat of Fig. 1 including an alignment structure on a top surface of the hub.
  • Fig. 8 is a side view in elevation of another example embodiment of a cleat in accordance with the present invention.
  • Fig. 9 is a bottom view in plan of the cleat of Fig. 8.
  • Fig. 10 is a view in perspective of the body part including hub of the cleat of Fig. 8.
  • Fig. 11 is a side view in elevation of a further example embodiment of a cleat in accordance with the present invention.
  • Fig. 12 is a bottom view in plan of the cleat of Fig. 11.
  • Fig. 13 is a view in perspective including the top surface of the cleat of Fig. 11.
  • Fig. 14 is a view in perspective of the body portion including the hub for the cleat of Fig. 11.
  • Fig. 15 is a view in plan of a shoe sole including a plurality of cleats of Fig. 11 connected to the shoe sole.
  • a cleat comprises a hub including at least one stub formed from a substantially inflexible or non-flexible material extending downwardly from the hub, at least one dynamic traction element extending downwardly from a lower surface of the hub and a cleat connector extending from an upper surface of the hub and configured to engage with a mating connection on a shoe.
  • Each dynamic traction element is configured or adapted to flex upwardly toward the hub when force is applied downwardly on the cleat (e.g., due to a weight load applied by a wearer of a shoe to which the cleat is attached).
  • cleat 2 includes a body part comprising a central hub 20 and a stud 4 which extends through a central opening in the hub as described below.
  • the body part with hub 20 is similar in design to the cleat described in U.S. Patent No.
  • the hub 20 has a centrally disposed circular cut-out portion. Stud 4 extends coaxially through the cut-out portion of hub 20 and includes a male threaded section 8 that extends away from an upper end 25 of the hub and is configured to engage with a female threaded connector receptacle located in a shoe outsole to connect the cleat to the shoe.
  • the threaded section 8 is formed as an integral part of stud 4.
  • the threading may be single or multiple threads and may be accompanied by any suitable locking mechanism to prevent inadvertent disengagement of the threaded section from a corresponding female threaded connector in the shoe outsole.
  • the stud 4 also includes a lower traction portion 11 which projects from a lower surface 27 of the hub and includes a tapered, frusto-conical bottom portion 5 at the terminal end of the lower traction portion 11 to facilitate traction on turf or a ground surface when the cleat is forced against the ground surface.
  • a series of cut-out or notched sections 6 is disposed around the periphery of the stud, the notched sections being located at angularly spaced positions with respect to each other and extending in a longitudinal direction of the stud, where a portion of each notched section 6 is located at the tapered portion 5 of the stud.
  • the notched sections 6 also provide enhanced gripping or traction against the ground surface as the stud is forced into the ground surface. While the cleat of Figs. 1-5 includes three notched sections 6, any suitable number (e.g., one or more) notched sections can optionally be provided along the ground-engaging portion of the stud. As can best be seen in Fig. 2, the notched sections 6 have a V-shaped cross-section. However, the notched sections can also have other cross-sectional configurations (e.g., curved or multi-faceted cross-sectional configurations).
  • the stud 4 can be designed as a separate piece from the body part including hub 20, where the stud is releasably secured to the hub during attachment of the combination to a shoe-mounted connector.
  • the stud 4 includes an annular upward-facing flange 10 disposed between the lower traction portion 11 and threaded section 8.
  • the flange 10 is suitably dimensioned so as to abut a corresponding annular shoulder formed by radially-inward extending projections 24 angularly spaced from each other along the central aperture of the hub 20 and located near the hub lower surface 27.
  • annular flange 10 on the stud 4 engages with the radially-inward extending projections 24 of the hub 20 so as to force hub 20 against the shoe sole as the stud 4 is engaged with the shoe-mounted connector.
  • This arrangement permits the stud and/or hub to be independently replaced upon disengagement of the assembled unit from the shoe.
  • the stud and hub may be molded together, preferably from polymers of different hardness to accommodate the structural and functional requirements that render the stud able to penetrate a ground surface, such as sod, and the dynamic elements to resiliently flex under load.
  • the cleat of the present invention can be provided with studs having different lengths.
  • the stud 4 shown in Figs. 1-5 when connected with the hub 20, has a length of about 11 mm as measured from the upper surface 25 of the hub to the terminal end of the stud 4.
  • the cleat 102 has been modified to include a stud 104 which is slightly longer in axial dimension in relation to stud 4 of Figs. 1-5.
  • the stud when stud 104 is connected with hub 20 as shown in Fig. 6, the stud has a length of about 14 mm as measured from the upper surface 25 of the hub to the terminal end of the stud 104.
  • cleats can be easily modified by combining the body portion including hub of the cleat with studs of different lengths depending upon a particular application in which the cleat is to be used. Different sized studs can also be combined with hubs having different numbers and/or types of dynamic traction elements.
  • the stud can be constructed of any suitably rigid material, such as hard, non- flexible plastic or polymer materials or metals or metal alloy (e.g., aluminum), or any other conventional materials known for cleats.
  • the invention is concerned with the combination of the stud and the body part, and specifically with surrounding the stud with the traction elements on the body part to achieve enhanced traction of the cleat for particular applications.
  • the hub bears a plurality of depending resiliently flexible (i.e. dynamic) traction elements 22.
  • the traction elements 22 extend outwardly and downward from the hub lower surface 27 at angularly spaced locations along the hub periphery.
  • Each traction element 22 preferably flexes substantially independently from the others, although adjacent traction elements may cooperate to provide traction.
  • Each traction element 22 is resiliently deflectably secured to the hub 20, so that, under the weight of the wearer, the traction element is deflected upward toward the sole of the wearer's shoe.
  • the dynamic traction elements are made from a resilient material such as polyurethane or other flexible elastomer.
  • the hub may be made from the same material as the dynamic traction elements or, alternatively, from a different material.
  • the body part including hub 20 and traction elements 22 is made (e.g., via a molding process) entirely from a single material such as polyurethane or other flexible, durable elastomer.
  • the cleat of Figs. 1-5 shows six dynamic traction elements 22 arranged in a symmetrical pattern around the hub 20.
  • the cleat can include any suitable number of dynamic traction elements (for example, one or more dynamic traction elements) arranged in any suitable symmetric or asymmetric patterns along the hub depending upon a particular application and traction function required for the cleat.
  • the traction elements 22 depicted with the cleat of Figs. 1-5 include multi-faceted surfaces that can have a slight taper inward toward the terminal ends of the traction elements.
  • the cleats of the present invention can include one or more dynamic traction elements having any one or more suitable geometric configurations, including two or more traction elements on a single cleat having different geometric configurations and/or different lengths or axial dimensions, so long as the dynamic traction elements maintain their resilient flexibility during use of the cleat as described above.
  • the dynamic traction elements may be provided with small barbs extending downward from their distal ends to enhance traction by digging slightly into the turf or ground surface as they flex under load.
  • gussets 24 are provided along an internal side portion of the traction elements and extending the longitudinal dimension of the traction elements between a terminal end of the traction elements and the lower hub surface 27 (see Fig. 2).
  • the gussets 24 act as resilient "springs" to aid the natural resilience of the traction elements and to pull the elements back into their unflexed positions (as shown in Figs. 1-3) when they are not under load (for example, when the shoe is lifted by the wearer from the ground).
  • each gusset 24 acts as a wear surface when the arms are deflected against the shoe sole, so that even the sides of the turf-engaging portions are substantially protected from abrasion.
  • the dynamic traction elements when unflexed, are said to extend downwardly and outwardly from the bottom surface of the hub.
  • outwardly it is meant that the dynamic element axis and/or outward facing surface diverges downwardly and away from the longitudinal axis of the stud 104 and hub.
  • dynamic traction elements are not necessarily required to extend outwardly and that such outward extension can be eliminated without departing from the scope of the invention.
  • the dynamic elements may extend only downwardly, as long as they flex to provide traction and resist undesired excess ground penetration of the stud under a weight load.
  • the stud 4 extends downward away from the lower surface 27 of the hub 20 a distance that is greater than the distance from which each of the dynamic traction elements 22 extends from the hub lower surface 27 when the dynamic traction elements are in their original, relaxed and un-flexed positions.
  • the stud makes initial contact and/or penetrates the turf or ground surface before the dynamic traction elements make contact and begin to flex and provide traction for the cleat.
  • the dynamic traction elements 22 contact the ground and interact with grass blades to resist lateral motion relative to the turf.
  • a generally V-shaped gap or "notch” is formed between adjacent dynamic tractions elements 22.
  • the dynamic traction elements 22 also provide traction by the cooperation of each pair of adjacent traction elements, as the V-shaped "notch” between them traps grass when the user's foot moves laterally through the grass.
  • additional traction is provided as grass blades are trapped between the shoe sole and the cantilevered dynamic traction elements 22 as the elements 22 flex toward the sole, thereby mechanically locking the shoe to grass blades exposed above the sod.
  • the traction elements 22 spring back to their unflexed state, releasing the hold on the grass blades contemporaneously with when the shoe is lifted from the ground surface.
  • the cleat of Figs. 1-5 provides enhanced traction in which the rigid and substantially non-flexible or inflexible stud initially engages and/or penetrates a ground surface when the user's shoe to which the cleat is attached makes contact with the ground, followed by additional traction by the dynamic traction elements flexing upward toward the shoe sole to engage with grass blades or other turf matter to provide further traction in combination with the stud until the user decides to lift the shoe from the ground surface.
  • This cleat design further allows the stud to be of shorter length in relation to conventional cleats employing rigid studs, since the dynamic traction elements enhance the traction of the cleat in combination with the traction provided by the stud.
  • cleat embodiment described above and depicted in Figs. 1-5 includes a single hard and substantially non-flexible or inflexible stud and one or more flexible dynamic traction elements
  • plural studs may be included in the hub described above and shown in Figs. 1-5 or, alternatively, plural studs may be included as part of a larger cleat structure along with dynamic elements.
  • a modified cleat includes a hub 20' with a hexagonal boss 26 on the top surface 25.
  • the hexagonal boss 26 permits six different orientations of the cleat on the shoe sole, where boss 26 would mate with a corresponding hexagonal recess in the sole or sole-mounted connector while the stud 4 is connected into the connector receptacle in the shoe sole.
  • Other geometric configurations for the boss are also possible (e.g., triangular, rectangular, etc.), where such geometric configurations would also correspond with recess configurations on the shoe sole.
  • the threaded section of the stud connects the cleat with a corresponding female threaded portion in the shoe sole.
  • any other suitable connection elements can also be provided on portions of the stud and/or portions of the hub of the cleat to facilitate connection with corresponding connection elements disposed on or in the shoe sole.
  • a cleat 202 is depicted that is similar to the cleat of Fig.
  • the hub 220 includes connecting elements disposed on the upper surface of the hub that connect with corresponding connection elements provided on the shoe sole to facilitate an easy connection of the cleat 202 with the shoe sole.
  • the upper surface of the hub 220 of cleat 202 includes an externally screw-threaded spigot 230 positioned at a central location along the hub and free-standing posts 232 arranged at rotationally spaced positions along the hub periphery.
  • the spigot 230 and posts 232 facilitate a connection with corresponding socket and teeth provided on a shoe sole in a manner substantially similar to the cleat connection described in U.S. Patent Nos.
  • cleat 220 includes eight dynamic traction elements 222 that are rotationally spaced from each other along the periphery of the hub 220 and have a substantially similar shape and design and also function in a similar manner as the traction elements 22 described above and depicted in the embodiment of Figs. 1-5.
  • Each traction element 222 further includes a gusset 224 provided along an internal side portion of the traction element and extending the longitudinal dimension of the traction element between a terminal end of the traction element and the lower hub surface, where the gussets 224 act as resilient "springs" to aid the natural resilience of the traction elements and to pull the elements back into their unflexed positions.
  • the stud 204 is also substantially similar in design to the stud 4 depicted in Fig. 4, including tapered section 205 and notched sections 206 near the terminal end of the lower traction portion of the stud to enhance traction of the cleat when the stud engages and/or penetrates the ground surface.
  • stud 204 when connected with the hub 220, has a length of about 15 mm as measured from the upper surface 225 of the hub to the terminal end of the stud 204.
  • the stud further includes a threaded section 208 that engages with a female threaded section disposed within a central opening of the hub 220, where the hub central opening further extends through spigot 230. As may best be seen in Fig.
  • annular ring 240 extends from the lower surface of the hub 220 and defines a portion of the hub central opening through which the stud 202 extends.
  • the stud 202 can include a flange located between its lower traction portion and its threaded section 208 that fits within and engages the inner wall surface portion of ring 240 when the stud threaded section 208 engages with the female threaded section within the hub central opening. As seen in Fig. 8, a portion of threaded section 208 extends slightly beyond the terminal end of spigot 230.
  • the stud can be configured such that the terminal end of the stud threaded section lies within the spigot upon complete threaded engagement of the stud with the hub.
  • a releasable connection of the stud with the hub can be achieved in any other suitable manner.
  • the stud can be molded with the hub to form a single, integral piece.
  • the cleat embodiment of Figs. 8-10 therefore includes connection elements disposed on the hub rather than the stud that facilitate connection of the cleat with the shoe sole.
  • This cleat can also be designed such that studs having different axial dimensions can be installed with the hub to facilitate different stud lengths extending beyond the lengths of the dynamic traction elements depending upon different applications in which the cleat is to be used.
  • cleats incorporating the principles of the present invention may also be asymmetrical.
  • FIG. 11-14 An example of such an asymmetrical cleat is illustrated in Figs. 11-14, where the body part including the hub 320 in this cleat is transversely configured as a teardrop or irregular ellipse. However, it is to be understood that other irregular or asymmetric configurations can also be used.
  • the bottom surface 327 of the hub 320 has an apertured frusto-conical configuration through which the threaded stem 308 of the stud 304 extends.
  • Six dynamic traction elements 322 are disposed in two arrays of three elements along the longer curved sides of the hub periphery.
  • the traction elements 322 include gussets 324 and are substantially similar in design, function and operability as the traction elements 24 described above and depicted in the embodiment of Figs. 1-5.
  • the particular locations of the dynamic elements can be selected to provide different traction effects.
  • the cleat of Figs. 11-13 is typically intended to have only one angular orientation when secured to a shoe sole.
  • Uniquely positioning an asymmetrical cleat on a shoe outsole is described in U.S. Patent Nos. 6,834,446 and 6,940,707, the disclosures of which are incorporated herein by reference in their entireties.
  • the stud 304 is substantially similar to the studs of the previous embodiments, including a threaded section 308 that is inserted through a central opening of the hub 320, and a tapered section 305 and notched sections 306 near the terminal end of the lower traction portion of the stud to enhance traction of the cleat when the stud engages and/or penetrates the ground surface.
  • the stud 302 further includes a flange located between its lower traction portion and its threaded section 308 that is suitably dimensioned so as to abut with a corresponding annular shoulder formed along the central aperture of the hub 320 and located near the hub lower surface 327.
  • two connecting posts 330 extend from the upper surface 325 of the hub 320 and are arranged with respect to each other in the longitudinal direction of the teardrop shaped hub with the central opening in the hub being disposed between the two posts.
  • Each post 330 has a curved and generally U- shaped configuration and is configured to engage with corresponding connecting structure in the shoe sole.
  • the connecting posts 330 and corresponding connecting structure in the shoe sole facilitate a suitable alignment of the asymmetrical cleat on the shoe sole when the stud threaded section 308 is connected to the shoe sole to secure the cleat to the shoe.
  • a shoe sole 400 is depicted in which cleats 302 are secured to the shoe sole in different orientations.
  • the traction elements surrounding the stud on the hub of the cleat need not all be dynamic traction elements.
  • at least some of the peripherally disposed traction elements may be relatively inflexible or non-flexible to provide static traction and effect different overall tractional characteristics, as desired for particular applications. Examples of combinations of dynamic and static traction elements are described in the previously referenced U.S. Patent No. 6,834,446.
  • one or more static traction elements may project downwardly from hub locations that are radially inward of the hub periphery.
  • any two or more traction elements on a cleat can have different geometric shapes or configurations and also different lengths as measured from an upper or lower surface of the hub to the terminal end of the traction elements.
  • One or more studs may also be provided at various locations with respect to the hub. While the previous example embodiments depict a stud positioned at a generally central location of the hub, it is noted that a cleat can be provided with a stud located at any non-central location along the hub or, alternatively, two or more studs located at varying positions along the hub.
  • the cleat can be designed such that the stud easily separates from the hub upon disengagement with the shoe sole (e.g., as shown in the embodiment of Figs. 1-5) or upon disengaging with the hub (e.g., via a screw threaded connection as shown in the embodiment of Figs. 8-10).
  • the stud can be molded with the hub so as to form a cleat as a single, integral unit (i.e., where the stud is inseparable from the hub).
  • the body member including the hub and traction elements can be formed in a single molding (e.g., "one shot") step.
  • the body member can be formed in two or more steps, with different components or parts of the body member being molded together to form a single, integral body member.
  • the multiple molding process may be used, for example, to effect different functional characteristics (e.g., different hardness characteristics for different portions of the hub) or aesthetic (e.g., different color) characteristics.
  • the capability of providing studs of different lengths without sacrificing functional performance serves to enhance the comfort of the wearer. Specifically, athletic shoes with longer studs are less comfortable to walk in than athletic shoes with shorter studs or no studs. With improvements in comfort, there is also less stress on muscles and joints.

Landscapes

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

Abstract

Crampon conçu pour être associé à une chaussure de sport et comprenant un moyeu, une pointe en matière pratiquement rigide s'étendant vers le bas tout en s'éloignant de la surface inférieure du moyeu, un raccord de crampon s'étendant vers le haut depuis la surface supérieure du moyeu et conçu pour s'accoupler à un raccord correspondant monté sur la semelle de la chaussure, la surface supérieure dudit raccord étant située en face de la surface inférieure du moyeu, et au moins un élément de traction dynamique s'étendant vers le bas depuis la surface inférieure du moyeu et conçu pour plier vers le haut quand le crampon est accouplé à la chaussure, ledit élément de traction dynamique étant poussé vers le bas afin de venir en contact avec le sol sous l'effet de la charge pondérale appliquée à la chaussure. L'extrémité distale de la pointe s'étend plus loin depuis la surface inférieure du moyeu que l'extrémité distale de chaque élément de traction dynamique non fléchi, de sorte que, quand la chaussure à laquelle est accouplé le crampon est poussée vers le bas en direction de la surface du sol, la pointe vient en contact avec le sol et/ou commence à en pénétrer la surface afin d'exercer une traction initiale avant le contact de chaque élément de traction dynamique avec ladite surface.
EP09715301.9A 2008-02-26 2009-02-26 Crampon de traction amélioré pour sports de plein air Withdrawn EP2247208A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3141208P 2008-02-26 2008-02-26
PCT/US2009/035252 WO2009108756A1 (fr) 2008-02-26 2009-02-26 Crampon de traction amélioré pour sports de plein air

Publications (2)

Publication Number Publication Date
EP2247208A1 true EP2247208A1 (fr) 2010-11-10
EP2247208A4 EP2247208A4 (fr) 2013-10-02

Family

ID=40996916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09715301.9A Withdrawn EP2247208A4 (fr) 2008-02-26 2009-02-26 Crampon de traction amélioré pour sports de plein air

Country Status (3)

Country Link
US (1) US20090211118A1 (fr)
EP (1) EP2247208A4 (fr)
WO (1) WO2009108756A1 (fr)

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US20090211118A1 (en) 2009-08-27
WO2009108756A1 (fr) 2009-09-03
EP2247208A4 (fr) 2013-10-02

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