US20030221337A1 - Climbing slipper comprising a reinforcement insert - Google Patents
Climbing slipper comprising a reinforcement insert Download PDFInfo
- Publication number
- US20030221337A1 US20030221337A1 US10/259,826 US25982602A US2003221337A1 US 20030221337 A1 US20030221337 A1 US 20030221337A1 US 25982602 A US25982602 A US 25982602A US 2003221337 A1 US2003221337 A1 US 2003221337A1
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- United States
- Prior art keywords
- sole
- insert
- shoe according
- reinforcement insert
- climbing shoe
- 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.)
- Abandoned
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
- A43B5/002—Mountain boots or shoes
- A43B5/003—Mountain boots or shoes for free climbing
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
Definitions
- the invention relates to the field of climbing shoes.
- Climbing shoes have a relatively simple sole mainly constituted of an outer sole made of a very adhesive, generally rubber-based material.
- U.S. Pat. No. 5,142,797 describes a climbing shoe in which the sole comprises an inner sole and an outer sole, the inner sole being made of a relatively rigid material.
- This inner sole has a special arch for relaxing the muscles of the plantar arch when the climber takes support on the tip of the shoe.
- This relatively rigid inner sole therefore has the object of modifying the bending characteristics of the sole over its length.
- the invention has the object of proposing a climbing shoe that particularly has improved characteristics of torsional strength. Indeed, the climber quite often needs to take support not on the tip of the shoe but on the lateral edges of the front portion of the sole, on the inner side or on the outer side, which are also called the edges of the shoe. This type of support, markedly offset with respect to the axis of the foot and of the shoe, therefore tends to cause a torsion (or twisting) of the foot and of the shoe about their longitudinal axis.
- the invention proposes a climbing shoe comprising a sole made of an adhesive material, characterized in that the shoe comprises a reinforcement insert, the contour of which coincides with the contour of the sole, at least in a front portion of the sole.
- FIG. 1 is a perspective schematic view of a shoe provided with a reinforcement insert according to the teachings of the invention
- FIG. 2 shows a planar view of a first example of embodiment of the reinforcement insert
- FIG. 3 is a view similar to that of FIG. 2 showing an insert provided with a central opening
- FIG. 4 shows an insert that is additionally provided with an integrated rear stiffener
- FIG. 5 is a partial cross-sectional view of the shoe of FIG. 1,
- FIGS. 6, 7 and 8 are planar views of two other alternative embodiments of a reinforcement insert.
- FIGS. 1 and 5 show a climbing shoe 10 that, as known, is mainly composed of an upper 12 , in this case a flexible low upper, a sole 14 and a protective outer lateral strip 16 that follows the lower edge of the upper 12 , at least in the front portion of the shoe.
- Certain types of climbing shoes are called ballerinas, and the invention also applies to this type of shoe.
- the upper 12 is a flexible upper, adapted to be adjusted to the foot, and it comprises, for example, a lacing system 18 to facilitate insertion of the foot in the shoe 10 and the tightening of the shoe on the foot.
- the upper 12 here is a low upper that does not rise above the ankle, but the invention could be applied within the scope of a shoe with a high upper.
- the upper can be made of any type of flexible material, particularly leather or fabrics. It can also be made of a tri-dimensional woven material that promotes the evacuation of perspiration.
- the sole 14 comprises an insole 20 that is, for example, assembled to the upper according to the ströbel technique.
- the insole 20 is thus attached edge to edge to the lower edge of the upper 12 by a stitching 22 .
- this insole 20 quite often comes directly in contact with the user's foot in order to avoid multiplying the thicknesses that can hinder the climber's sensitivity to the perception of the terrain.
- this insole 20 is directly covered by an outer sole 24 .
- the outer sole is made of a material that has a very high adhesiveness and a good flexibility, for example, a rubber-based material.
- This outer sole 24 generally has a thickness on the order of 4 mm, at least in the front portion of the sole 14 .
- the traditional sole 14 is therefore a sole that is substantially flexible. Indeed, the nature of the materials used and their low thickness make the sole hardly resistant to deformation with respect to the forces that are imposed on it. In a traditional shoe, it is therefore the muscles from the user's foot that absorb almost all of the forces due to the supports.
- pressure distribution elements located either at the center of the front portion, or at an edge of the shoe. Nevertheless, these localized distribution elements have very low mechanical features whose main role is to distribute the overpressure due, for example, to a support on a rough terrain. Given their low mechanical properties, these pressure distribution elements cannot impart an overall true rigidity to the sole.
- the shoe 10 according to the invention comprises a reinforcement insert 26 in order to better control the deformations of the sole when in support.
- the insert 26 is in the form of a planar plate element having a peripheral contour 27 substantially identical to the peripheral contour 21 of the first insole 20 , at least in the front portion of the sole 14 .
- the reinforcement 26 extends over the entire length of the sole, i.e., up to a zone of the heel of the sole. This configuration is particularly efficient as it allows for a better distribution of the torsional stress. Nevertheless, one can also envision making the invention with an insert that extends only over the front portion of the sole as long as it follows the contour thereof.
- the contour 27 of the insert 26 shown in FIG. 2 can have a contour that is different from that 21 of the insole 20 , for example, by having a smaller width.
- This insert 26 can be made of different types of materials as long as they have sufficient rigidity, i.e., greater than that of the material of the adhesive sole.
- the material forming the insert will preferably have a modulus of elasticity (Young's modulus) greater than 1 GPa.
- the insert could thus be made by means of an injected plastic, such as polyethylene, polyamide, or rigid polyurethane. In order to increase their mechanical properties, these plastics can be filled with fiber. Naturally, any other material having the desired properties of rigidity can be used.
- the insert can also be made by compression molding, for example, by using a thermosetting resin filled with fibers.
- the best compromise in weight and rigidity is obtained by using highly efficient composite materials, such as fiber webs (preferably woven) impregnated with a polymer resin (for instance, a polyester resin or an epoxy resin).
- the fiber webs are preferably glass fabrics or carbon fabrics. Different types of weaving and fiber orientation can be envisioned.
- the weight of the fibers used can be adapted to the performances one wishes to obtain.
- These highly efficient composite materials they have a modulus of elasticity on the order of 15-120 Gpa) are more expensive than the aforementioned materials, but they allow obtaining a lighter insert having equivalent mechanical properties.
- the insert 26 allows for a very substantial increase in the strength of the shoe when the climber takes support on a surface only with the edges 34 of the shoe, i.e., with the lateral edges of the front portion of the sole. Indeed, due to the fact that the reinforcement insert 26 extends laterally up to the edges of the sole 14 , the support forces imposed on the edges are directly absorbed by the insert. These forces that impose torsional stress on the sole are transmitted toward the rear of the sole, it is toward the part of the foot that transmits the support forces toward the climber's leg. One obtains a better deformability of the sole, in contrast to a localized pressure distribution element, and one better relaxes the forces to be provided by the foot muscles.
- the insert extends up to the specific spot of the support, i.e., up to the level of the edges 34 , allows the outer sole to better fulfill its adhesive role.
- the material of this outer sole is necessarily relatively deformable. Under stress of the support, therefore, the material, without the insert, would tend to deform excessively, to the point of hindering the adhesiveness of the support.
- the edge 34 is reinforced by the insert according to the invention, the deformation of the material of the outer sole at the level of the support is limited, and the material can fulfill its function of adhesiveness to its best ability.
- the protective strip 16 which strip is generally made of the same material as that of the outer sole 24 or of a similar material.
- FIG. 3 shows a particularly interesting embodiment of the invention. Indeed, one can see that this second embodiment of a reinforcement insert 26 differs from the first by the presence of a central opening 28 that, as shown, extends over the front portion of the sole 14 but also over a good portion of the rear portion thereof. Due to the presence of this opening 28 , the insert 26 is presented, at least in the front portion of the sole, as a peripheral frame having a substantially constant width which follows the outer contour of the sole 14 almost exactly, particularly in the front portion thereof, but which is cut out in the center.
- the width of the peripheral frame is comprised, for example, between 4 and 20 mm. Naturally, the width of the peripheral frame can also vary.
- the presence of the central opening 28 has the advantage of reinforcing the strength of the sole 14 at the level of the lateral edges (edges 36 ), without downgrading too substantially the capacity of the sole to transmit sensory information to the foot with respect to the micro-reliefs of the surface on which the foot takes support.
- the sole 14 in its central portion, has the same capacity to deform as a traditional sole, at least along a direction perpendicular to the plane of the sole. Due to this central portion, the climber can thus feel the roughness of the terrain on which he takes support without this roughness being filtered by the presence of an insert covering the entire forefoot.
- the insert 26 maintains a good portion of its capacities to improve the torsional strength of the sole.
- the central opening 28 could extend only over the front portion of the sole where most of the sensory perception occurs, since the central and rear portions of the insert can be solid to reinforce the anti-torsional effect of the insert.
- FIGS. 6 and 7 two alternative embodiments of the invention are shown, their object being to confer to the insert 26 a progressive rigidity between the lateral contour 27 , that is desired to be rigid, and the central portion corresponding to the opening 28 .
- This object can be achieved by providing that the insert have strips 34 extending along a radial direction towards the “center” of the opening 28 in the plane of the insert.
- these strips 34 are obtained simply by providing, in the peripheral frame of the insert surrounding the central opening 28 , cutouts 36 having a substantially radial orientation that open out on the inner edge demarcating the opening 28 . Naturally, these cutouts 36 do not extend up to the outer edge of the insert.
- FIG. 6 two alternative embodiments of the invention are shown, their object being to confer to the insert 26 a progressive rigidity between the lateral contour 27 , that is desired to be rigid, and the central portion corresponding to the opening 28 .
- This object can be achieved by providing that the insert have strips 34 extending along a radial direction towards the “center” of
- the strips 34 are spaced apart by interstices 38 , and they extend toward the center over a greater length.
- the strips 34 have a substantially trapezoidal shape, i.e., their width decreases and is minimal at their free inner radial end.
- the strips could still have other shapes, for example, a triangular shape.
- the strips 34 work by bending along a direction perpendicular to the plane of the sole, their outer radial end being “anchored” to the peripheral frame of the insert 26 , and their inner radial end along the deformations of the sole at the center of the opening 28 .
- a rigidity that decreases radially from the outside toward the inside of the central opening 28 .
- differential rigidity along the radial direction be formed by a variation in the thickness of the insert along this direction. In any case, such a design avoids a rough variation in the rigidity of the sole at the level of the edge of the central opening 28 .
- FIG. 4 a reinforcement insert is shown which is similar to that of FIG. 3, but whose rear portion is extended by a stiffener 30 .
- the stiffener 30 rises vertically, along a direction substantially perpendicular to the plane of the sole, to cover the rear of the user's heel.
- the stiffener 30 has a small width at the level of its low portion for connecting to the rest of the insert 26 , and it flares out at the top.
- the stiffener is cut out in its center 40 in order to limit contact with the Achilles tendon, which is a particularly sensitive area of the foot.
- the insert 26 with its stiffener 30 forms a tri-dimensional element. In order to facilitate construction, they can be made of two elements (the sole portion of the insert being therefore substantially planar) assembled one to the other, for example, by gluing.
- the stiffener 30 can be designed so as to exert, through a spring effect, a pressure force on the rear portion of the heel. This pressure force will contribute a better hold of the shoe on the foot. Indeed, a climber rarely takes support on the heel and, during certain movements, the heel of the shoe tends to come off of the foot.
- the stiffener by having a spring effect, will always allow maintaining the heel of the shoe in contact with the foot, thus preventing any hint of the shoe coming off.
- the portion of the insert corresponding to the sole is planar.
- this portion of the insert have a tri-dimensional shape that is adapted, at least partially, to the shape of the foot. It will be rather easy to obtain if the insert is made by molding, whether by injection or by compression.
- the insert is made by molding, whether by injection or by compression.
- the rear portion of the insert by giving a highly tri-dimensional nature to the rear portion of the insert, one can substantially increase the rigidity of this rear portion, and therefore the capacity of the sole to resist torsional stresses and to relay the forces toward the climber's leg.
- FIG. 5 shows a particularly advantageous assembly method for the shoe provided with a reinforcement insert according to the invention.
- the insert is pressed directly against the lower surface of the insole 20 .
- the lateral protective strip 16 that essentially extends along the lower edge of the upper 12 , comprises a folded portion 32 that at least partially covers the insert 26 from underneath. The outer sole 24 is then attached underneath. With this construction, the edge of the insert is completely hidden by the protective strip 16 .
- the insert according to the invention therefore allows having a shoe in which the transmission of the torsional forces occurs through a homogenous work of the sole assembly, without overly stiffening the latter in the direction of its bending, which allows for a precise control of the supports.
- the frame effect of the insert ensures a very good hold of the edges of the shoe, while maintaining a very good capacity for the climber to feel the nature and roughness of the surface on which he takes support.
- FIG. 8 also represents an example of an embodiment that allows giving an effect of progressive rigidity between the opening 28 and the peripheral or lateral contour 27 of the insert.
- the insert 26 is provided with an opening 28 only in its front zone, i.e., substantially up to the front limit zone of the plantar arch 29 .
- an insert 31 made of EVA or similar material is housed, having a rigidity that is reduced with respect to that of the insert 26 and allowing to progressively vary the rigidity between the peripheral contour 27 and the central portion itself of the opening 28 .
- the EVA insert 31 can have a rigidity corresponding to that of the insole 20 or it can be slightly more rigid depending on the effect desired. It can also be less rigid.
- the EVA insert 31 is partly added to compensate for the thickness of the insert. If the latter is very thin (for instance, if it is made of a carbon composite), there is no need to add this insert 31 .
- the more flexible EVA insert 31 can also give more flexibility to and increase longitivity (resistance to wear) of the rubber outer sole 24 .
- the insert 26 is form-molded, i.e., according to the shape of the foot, especially in the zone of the plantar arch 29 .
- FIG. 9 shows another example of embodiment, similar to FIG. 8, which is more particularly adapted to be used with a planar insert 26 .
- the opening 28 extends up to the level of the heel while demarcating a peripheral frame of a substantially constant width.
- the opening 28 has substantially the shape of a tear drop.
- the insert 26 has, at the level of the plantar arch, two V-shaped arms 33 that allow a good adaptation of the insert 26 to the shape of the foot and to the morphology of the plantar arch, in spite of the use of a planar insert.
- the “shorter” opening 28 of FIG. 9 enables having a shoe that is stiffer at the rear and, conversely, in the case of FIG. 3, the shoe will be more flexible and therefore more adaptable.
Abstract
The invention proposes a climbing shoe comprising a sole made of an adhesive material, characterized in that the shoe (10) comprises a reinforcement insert (26), the contour of which coincides with the contour of the sole, at least in a front portion of the sole.
Description
- The invention relates to the field of climbing shoes.
- Climbing shoes have a relatively simple sole mainly constituted of an outer sole made of a very adhesive, generally rubber-based material.
- U.S. Pat. No. 5,142,797 describes a climbing shoe in which the sole comprises an inner sole and an outer sole, the inner sole being made of a relatively rigid material. This inner sole has a special arch for relaxing the muscles of the plantar arch when the climber takes support on the tip of the shoe. This relatively rigid inner sole therefore has the object of modifying the bending characteristics of the sole over its length.
- The invention has the object of proposing a climbing shoe that particularly has improved characteristics of torsional strength. Indeed, the climber quite often needs to take support not on the tip of the shoe but on the lateral edges of the front portion of the sole, on the inner side or on the outer side, which are also called the edges of the shoe. This type of support, markedly offset with respect to the axis of the foot and of the shoe, therefore tends to cause a torsion (or twisting) of the foot and of the shoe about their longitudinal axis.
- To this end, the invention proposes a climbing shoe comprising a sole made of an adhesive material, characterized in that the shoe comprises a reinforcement insert, the contour of which coincides with the contour of the sole, at least in a front portion of the sole.
- Other characteristics and advantages of the invention will appear in reading the detailed description that follows, and with reference to the attached drawings in which:
- FIG. 1 is a perspective schematic view of a shoe provided with a reinforcement insert according to the teachings of the invention,
- FIG. 2 shows a planar view of a first example of embodiment of the reinforcement insert,
- FIG. 3 is a view similar to that of FIG. 2 showing an insert provided with a central opening,
- FIG. 4 shows an insert that is additionally provided with an integrated rear stiffener,
- FIG. 5 is a partial cross-sectional view of the shoe of FIG. 1,
- FIGS. 6, 7 and8 are planar views of two other alternative embodiments of a reinforcement insert.
- FIGS. 1 and 5 show a
climbing shoe 10 that, as known, is mainly composed of an upper 12, in this case a flexible low upper, a sole 14 and a protective outerlateral strip 16 that follows the lower edge of the upper 12, at least in the front portion of the shoe. Certain types of climbing shoes are called ballerinas, and the invention also applies to this type of shoe. - The upper12 is a flexible upper, adapted to be adjusted to the foot, and it comprises, for example, a
lacing system 18 to facilitate insertion of the foot in theshoe 10 and the tightening of the shoe on the foot. The upper 12 here is a low upper that does not rise above the ankle, but the invention could be applied within the scope of a shoe with a high upper. The upper can be made of any type of flexible material, particularly leather or fabrics. It can also be made of a tri-dimensional woven material that promotes the evacuation of perspiration. - First, the sole14 comprises an
insole 20 that is, for example, assembled to the upper according to the ströbel technique. As can be seen in FIG. 5, theinsole 20 is thus attached edge to edge to the lower edge of the upper 12 by astitching 22. For a climbing shoe, thisinsole 20 quite often comes directly in contact with the user's foot in order to avoid multiplying the thicknesses that can hinder the climber's sensitivity to the perception of the terrain. In a traditional shoe, thisinsole 20 is directly covered by anouter sole 24. The outer sole is made of a material that has a very high adhesiveness and a good flexibility, for example, a rubber-based material. Thisouter sole 24 generally has a thickness on the order of 4 mm, at least in the front portion of the sole 14. The traditional sole 14 is therefore a sole that is substantially flexible. Indeed, the nature of the materials used and their low thickness make the sole hardly resistant to deformation with respect to the forces that are imposed on it. In a traditional shoe, it is therefore the muscles from the user's foot that absorb almost all of the forces due to the supports. In traditional shoes, one can find, between the outer sole and the insole, pressure distribution elements located either at the center of the front portion, or at an edge of the shoe. Nevertheless, these localized distribution elements have very low mechanical features whose main role is to distribute the overpressure due, for example, to a support on a rough terrain. Given their low mechanical properties, these pressure distribution elements cannot impart an overall true rigidity to the sole. - On the contrary, the
shoe 10 according to the invention comprises a reinforcement insert 26 in order to better control the deformations of the sole when in support. - According to a first embodiment of the invention shown in FIG. 2, the
insert 26 is in the form of a planar plate element having aperipheral contour 27 substantially identical to theperipheral contour 21 of thefirst insole 20, at least in the front portion of the sole 14. - In the examples of embodiment shown, the
reinforcement 26 extends over the entire length of the sole, i.e., up to a zone of the heel of the sole. This configuration is particularly efficient as it allows for a better distribution of the torsional stress. Nevertheless, one can also envision making the invention with an insert that extends only over the front portion of the sole as long as it follows the contour thereof. - In the rear portion of the
sole 14, thecontour 27 of theinsert 26 shown in FIG. 2 can have a contour that is different from that 21 of theinsole 20, for example, by having a smaller width. - This
insert 26 can be made of different types of materials as long as they have sufficient rigidity, i.e., greater than that of the material of the adhesive sole. The material forming the insert will preferably have a modulus of elasticity (Young's modulus) greater than 1 GPa. The insert could thus be made by means of an injected plastic, such as polyethylene, polyamide, or rigid polyurethane. In order to increase their mechanical properties, these plastics can be filled with fiber. Naturally, any other material having the desired properties of rigidity can be used. - The insert can also be made by compression molding, for example, by using a thermosetting resin filled with fibers.
- However, the best compromise in weight and rigidity is obtained by using highly efficient composite materials, such as fiber webs (preferably woven) impregnated with a polymer resin (for instance, a polyester resin or an epoxy resin). The fiber webs are preferably glass fabrics or carbon fabrics. Different types of weaving and fiber orientation can be envisioned. Likewise, the weight of the fibers used can be adapted to the performances one wishes to obtain. These highly efficient composite materials (they have a modulus of elasticity on the order of 15-120 Gpa) are more expensive than the aforementioned materials, but they allow obtaining a lighter insert having equivalent mechanical properties.
- Due to its geometry and the specific rigidity of the materials composing it, the
insert 26 allows for a very substantial increase in the strength of the shoe when the climber takes support on a surface only with theedges 34 of the shoe, i.e., with the lateral edges of the front portion of the sole. Indeed, due to the fact that thereinforcement insert 26 extends laterally up to the edges of the sole 14, the support forces imposed on the edges are directly absorbed by the insert. These forces that impose torsional stress on the sole are transmitted toward the rear of the sole, it is toward the part of the foot that transmits the support forces toward the climber's leg. One obtains a better deformability of the sole, in contrast to a localized pressure distribution element, and one better relaxes the forces to be provided by the foot muscles. - In addition, the fact that the insert extends up to the specific spot of the support, i.e., up to the level of the
edges 34, allows the outer sole to better fulfill its adhesive role. Indeed, the material of this outer sole is necessarily relatively deformable. Under stress of the support, therefore, the material, without the insert, would tend to deform excessively, to the point of hindering the adhesiveness of the support. On the contrary, since theedge 34 is reinforced by the insert according to the invention, the deformation of the material of the outer sole at the level of the support is limited, and the material can fulfill its function of adhesiveness to its best ability. The same advantage is naturally found in relation to the adhesive role that is occasionally fulfilled by theprotective strip 16, which strip is generally made of the same material as that of the outer sole 24 or of a similar material. - FIG. 3 shows a particularly interesting embodiment of the invention. Indeed, one can see that this second embodiment of a
reinforcement insert 26 differs from the first by the presence of acentral opening 28 that, as shown, extends over the front portion of the sole 14 but also over a good portion of the rear portion thereof. Due to the presence of this opening 28, theinsert 26 is presented, at least in the front portion of the sole, as a peripheral frame having a substantially constant width which follows the outer contour of the sole 14 almost exactly, particularly in the front portion thereof, but which is cut out in the center. The width of the peripheral frame is comprised, for example, between 4 and 20 mm. Naturally, the width of the peripheral frame can also vary. - The presence of the
central opening 28 has the advantage of reinforcing the strength of the sole 14 at the level of the lateral edges (edges 36), without downgrading too substantially the capacity of the sole to transmit sensory information to the foot with respect to the micro-reliefs of the surface on which the foot takes support. Indeed, in its central portion, the one corresponding to thecentral opening 28, the sole 14 has the same capacity to deform as a traditional sole, at least along a direction perpendicular to the plane of the sole. Due to this central portion, the climber can thus feel the roughness of the terrain on which he takes support without this roughness being filtered by the presence of an insert covering the entire forefoot. With this configuration, theinsert 26 maintains a good portion of its capacities to improve the torsional strength of the sole. In fact, one can see that thecentral opening 28 could extend only over the front portion of the sole where most of the sensory perception occurs, since the central and rear portions of the insert can be solid to reinforce the anti-torsional effect of the insert. - In FIGS. 6 and 7, two alternative embodiments of the invention are shown, their object being to confer to the insert26 a progressive rigidity between the
lateral contour 27, that is desired to be rigid, and the central portion corresponding to theopening 28. This object can be achieved by providing that the insert havestrips 34 extending along a radial direction towards the “center” of theopening 28 in the plane of the insert. In the example of FIG. 6, thesestrips 34 are obtained simply by providing, in the peripheral frame of the insert surrounding thecentral opening 28,cutouts 36 having a substantially radial orientation that open out on the inner edge demarcating theopening 28. Naturally, thesecutouts 36 do not extend up to the outer edge of the insert. In the example of FIG. 7, thestrips 34 are spaced apart byinterstices 38, and they extend toward the center over a greater length. Thestrips 34 have a substantially trapezoidal shape, i.e., their width decreases and is minimal at their free inner radial end. Naturally, the strips could still have other shapes, for example, a triangular shape. In any case, thestrips 34 work by bending along a direction perpendicular to the plane of the sole, their outer radial end being “anchored” to the peripheral frame of theinsert 26, and their inner radial end along the deformations of the sole at the center of theopening 28. Thus, one obtains a rigidity that decreases radially from the outside toward the inside of thecentral opening 28. - One could also provide that the differential rigidity along the radial direction be formed by a variation in the thickness of the insert along this direction. In any case, such a design avoids a rough variation in the rigidity of the sole at the level of the edge of the
central opening 28. - In FIG. 4, a reinforcement insert is shown which is similar to that of FIG. 3, but whose rear portion is extended by a
stiffener 30. Thestiffener 30 rises vertically, along a direction substantially perpendicular to the plane of the sole, to cover the rear of the user's heel. By associating thestiffener 30 with the insert, the capacity of the shoe to transmit the torsional forces from the foot to the leg is substantially strengthened. In the example shown, thestiffener 30 has a small width at the level of its low portion for connecting to the rest of theinsert 26, and it flares out at the top. In addition, one can see that the stiffener is cut out in its center 40 in order to limit contact with the Achilles tendon, which is a particularly sensitive area of the foot. Theinsert 26 with itsstiffener 30 forms a tri-dimensional element. In order to facilitate construction, they can be made of two elements (the sole portion of the insert being therefore substantially planar) assembled one to the other, for example, by gluing. - The
stiffener 30 can be designed so as to exert, through a spring effect, a pressure force on the rear portion of the heel. This pressure force will contribute a better hold of the shoe on the foot. Indeed, a climber rarely takes support on the heel and, during certain movements, the heel of the shoe tends to come off of the foot. The stiffener, by having a spring effect, will always allow maintaining the heel of the shoe in contact with the foot, thus preventing any hint of the shoe coming off. - In all of the examples described until now, the portion of the insert corresponding to the sole is planar. However, one can provide that this portion of the insert have a tri-dimensional shape that is adapted, at least partially, to the shape of the foot. It will be rather easy to obtain if the insert is made by molding, whether by injection or by compression. In addition, by giving a highly tri-dimensional nature to the rear portion of the insert, one can substantially increase the rigidity of this rear portion, and therefore the capacity of the sole to resist torsional stresses and to relay the forces toward the climber's leg. On the other hand, it is advantageous that a front portion of the insert be kept relatively planar in order to maintain a certain flexibility in this part of the sole.
- FIG. 5 shows a particularly advantageous assembly method for the shoe provided with a reinforcement insert according to the invention.
- One can thus see that the insert is pressed directly against the lower surface of the
insole 20. Furthermore, one can see that the lateralprotective strip 16 that essentially extends along the lower edge of the upper 12, comprises a foldedportion 32 that at least partially covers theinsert 26 from underneath. The outer sole 24 is then attached underneath. With this construction, the edge of the insert is completely hidden by theprotective strip 16. - The insert according to the invention therefore allows having a shoe in which the transmission of the torsional forces occurs through a homogenous work of the sole assembly, without overly stiffening the latter in the direction of its bending, which allows for a precise control of the supports. In the inserts provided with a central opening, the frame effect of the insert ensures a very good hold of the edges of the shoe, while maintaining a very good capacity for the climber to feel the nature and roughness of the surface on which he takes support.
- FIG. 8 also represents an example of an embodiment that allows giving an effect of progressive rigidity between the
opening 28 and the peripheral orlateral contour 27 of the insert. In this case, theinsert 26 is provided with anopening 28 only in its front zone, i.e., substantially up to the front limit zone of theplantar arch 29. In thisopening 28, aninsert 31 made of EVA or similar material is housed, having a rigidity that is reduced with respect to that of theinsert 26 and allowing to progressively vary the rigidity between theperipheral contour 27 and the central portion itself of theopening 28. - The EVA insert31 can have a rigidity corresponding to that of the
insole 20 or it can be slightly more rigid depending on the effect desired. It can also be less rigid. - The effects, improved feelings and sensory perceptions are the same as those described in connection with FIGS. 3 and 4. In fact, the
EVA insert 31 is partly added to compensate for the thickness of the insert. If the latter is very thin (for instance, if it is made of a carbon composite), there is no need to add thisinsert 31. - The more
flexible EVA insert 31 can also give more flexibility to and increase longitivity (resistance to wear) of the rubber outer sole 24. - In the example of FIG. 8, the
insert 26 is form-molded, i.e., according to the shape of the foot, especially in the zone of theplantar arch 29. - FIG. 9 shows another example of embodiment, similar to FIG. 8, which is more particularly adapted to be used with a
planar insert 26. - In this case, the
opening 28 extends up to the level of the heel while demarcating a peripheral frame of a substantially constant width. Thus, theopening 28 has substantially the shape of a tear drop. - Because of this shape, the
insert 26 has, at the level of the plantar arch, two V-shapedarms 33 that allow a good adaptation of theinsert 26 to the shape of the foot and to the morphology of the plantar arch, in spite of the use of a planar insert. - As in the preceding case, an
insert 31 made of a less rigid material, such as EVA, is housed in theopening 28. - In both cases, the combined construction of the
rigid insert 26/“flexible”insert 31 allows an optimal reconciliation of the feeling of the rock and the foot support/edge setting. - Compared to the embodiment of FIG. 3, the “shorter” opening28 of FIG. 9 enables having a shoe that is stiffer at the rear and, conversely, in the case of FIG. 3, the shoe will be more flexible and therefore more adaptable.
- Naturally, the invention is not limited to the previously described examples of embodiments given by way of non-limiting examples, but it encompasses all similar or equivalent embodiments.
Claims (16)
1. Climbing shoe comprising a sole (14, 24) made of an adhesive material, characterized in that the shoe (10) comprises a reinforcement insert (26), the contour (27) of which coincides with the contour of the sole (14, 20, 24), at least in a front portion of the sole (14, 20, 24).
2. Climbing shoe according to claim 1 , characterized in that the reinforcement insert (26) extends rearwardly up to a heel zone of the shoe.
3. Climbing shoe according to one of claims 1 or 2, characterized in that the reinforcement insert (26) is made of a material that is more rigid than the adhesive material of the sole (24).
4. Climbing shoe according to claim 3 , characterized in that the reinforcement insert (26) is made of plastic.
5. Climbing shoe according to claim 3 , characterized in that the reinforcement insert (26) is made of a composite material.
6. Climbing shoe according to claim 4 , characterized in that the reinforcement insert (26) is made of a composite material comprising woven fibers embedded in a polymer resin.
7. Climbing shoe according to any of the preceding claims, characterized in that the reinforcement insert (26) has a central opening (28), at least in a front portion.
8. Climbing shoe according to claim 7 , characterized in that the reinforcement insert (26) has a rigidity that decreases radially from the outside toward the inside of the central opening (28).
9. Climbing shoe according to claim 7 , characterized in that the reinforcement insert (26) comprises radial strips (34) that extend toward the inside of the central opening (28).
10. Climbing shoe according to any of the preceding claims, characterized in that the reinforcement insert (26) comprises a rear stiffener (30) that rises along the rear surface of the heel.
11. Climbing shoe according to claim 10 , characterized in that the stiffener (30) is cut out.
12. Climbing shoe according to any of the preceding claims, characterized in that the reinforcement insert (26) is constituted of a planar plate element.
13. Climbing shoe according to any of claims 1-11, characterized in that the reinforcement insert (26) is constituted of a tri-dimensional element.
14. Climbing shoe according to any of the preceding claims, characterized in that the reinforcement insert (26) is comprised between an insole (20) and an outer sole (24).
15. Climbing shoe according to claim 14 , characterized in that the insole (20) is sewn edge to edge to the lower contour of the upper (12) of the shoe, according to the Ströbel technique.
16. Climbing shoe according to one of claims 14 or 15, characterized in that the upper (12) is protected by an outer lateral strip (16), at least in its front portion, and /in that/ the outer lateral strip (16) is folded under the sole such that the insert (26) is inserted between the insole (20) and the fold (32) of the outer lateral strip (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR02.06811 | 2002-05-30 | ||
FR0206811A FR2840163B1 (en) | 2002-05-30 | 2002-05-30 | CLIMBING SHOE HAVING A REINFORCEMENT INSERT |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030221337A1 true US20030221337A1 (en) | 2003-12-04 |
Family
ID=29558928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/259,826 Abandoned US20030221337A1 (en) | 2002-05-30 | 2002-09-30 | Climbing slipper comprising a reinforcement insert |
Country Status (3)
Country | Link |
---|---|
US (1) | US20030221337A1 (en) |
CZ (1) | CZ20031521A3 (en) |
FR (1) | FR2840163B1 (en) |
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US20040244226A1 (en) * | 2002-12-11 | 2004-12-09 | Salomon S.A. | Article of footwear, particularly for climbing |
DE102006027924A1 (en) * | 2006-06-14 | 2007-12-20 | Pirmin Vlaho | Shoe for foot control of the bass drum of a drum kit and shoe for foot control of the hi-hat of a drum kit |
US20080040950A1 (en) * | 2006-07-21 | 2008-02-21 | Heinz Mariacher | Climbing shoe |
ITTV20090146A1 (en) * | 2009-07-15 | 2011-01-16 | Scarpa Calzaturificio Spa | CLIMBING SHOE |
US20130111783A1 (en) * | 2010-06-03 | 2013-05-09 | Boot Technologies Limited Of Sarnia House | Sports Shoe |
USD743688S1 (en) * | 2012-06-18 | 2015-11-24 | Martin M. Lewis | Sneaker sock with rubber sole |
WO2016179265A1 (en) * | 2015-05-04 | 2016-11-10 | Nike, Inc. | Footwear sole structure including a spring plate |
US20170188661A1 (en) * | 2015-12-31 | 2017-07-06 | Action Sports Equipment, Inc. | Shoe wrap and method for manufacturing shoe |
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US10842224B2 (en) | 2015-10-02 | 2020-11-24 | Nike, Inc. | Plate for footwear |
USD908331S1 (en) * | 2019-07-11 | 2021-01-26 | Nike, Inc. | Shoe |
USD929092S1 (en) * | 2020-01-23 | 2021-08-31 | Asics Corporation | Shoe |
US11344078B2 (en) | 2018-04-16 | 2022-05-31 | Nike, Inc. | Outsole plate |
US20220273070A1 (en) * | 2021-02-26 | 2022-09-01 | Deckers Outdoor Corporation | Sole including closed loop support member |
US20220346493A1 (en) * | 2021-05-03 | 2022-11-03 | Calzaturificio S.C.A.R.P.A. S.P.A. | Climbing shoe |
USD970172S1 (en) * | 2021-12-10 | 2022-11-22 | Nike, Inc. | Shoe |
USD971569S1 (en) * | 2021-09-17 | 2022-12-06 | Nike, Inc. | Shoe |
USD997513S1 (en) * | 2022-12-06 | 2023-09-05 | Nike, Inc. | Shoe |
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USD998301S1 (en) * | 2022-12-06 | 2023-09-12 | Nike, Inc. | Shoe |
USD1007110S1 (en) | 2022-03-23 | 2023-12-12 | Mountain Origins Design LLC | Footwear |
USD1007826S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1007825S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1008611S1 (en) | 2022-03-23 | 2023-12-26 | Mountain Origins Design LLC | Footwear |
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US20170188661A1 (en) * | 2015-12-31 | 2017-07-06 | Action Sports Equipment, Inc. | Shoe wrap and method for manufacturing shoe |
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US10758001B2 (en) * | 2016-12-20 | 2020-09-01 | Nike, Inc. | Energy return footwear plate |
US20180168281A1 (en) * | 2016-12-20 | 2018-06-21 | Nike, Inc. | Energy return footwear plate |
WO2018118430A1 (en) * | 2016-12-20 | 2018-06-28 | Nike Innovate C.V. | Energy return footwear plate |
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USD825903S1 (en) * | 2017-12-20 | 2018-08-21 | Nike, Inc. | Shoe |
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US11344078B2 (en) | 2018-04-16 | 2022-05-31 | Nike, Inc. | Outsole plate |
US11819084B2 (en) | 2018-04-16 | 2023-11-21 | Nike, Inc. | Outsole plate |
US11633013B2 (en) | 2018-04-16 | 2023-04-25 | Nike, Inc. | Outsole plate |
USD846249S1 (en) * | 2018-08-09 | 2019-04-23 | Nike, Inc. | Shoe |
USD896488S1 (en) * | 2019-01-04 | 2020-09-22 | Nike, Inc. | Shoe |
USD890490S1 (en) * | 2019-01-04 | 2020-07-21 | Nike, Inc. | Shoe |
USD908331S1 (en) * | 2019-07-11 | 2021-01-26 | Nike, Inc. | Shoe |
USD894561S1 (en) * | 2019-12-19 | 2020-09-01 | Nike, Inc. | Shoe |
USD929092S1 (en) * | 2020-01-23 | 2021-08-31 | Asics Corporation | Shoe |
US20220273070A1 (en) * | 2021-02-26 | 2022-09-01 | Deckers Outdoor Corporation | Sole including closed loop support member |
US20220346493A1 (en) * | 2021-05-03 | 2022-11-03 | Calzaturificio S.C.A.R.P.A. S.P.A. | Climbing shoe |
USD971569S1 (en) * | 2021-09-17 | 2022-12-06 | Nike, Inc. | Shoe |
USD970172S1 (en) * | 2021-12-10 | 2022-11-22 | Nike, Inc. | Shoe |
USD1008611S1 (en) | 2022-03-23 | 2023-12-26 | Mountain Origins Design LLC | Footwear |
USD1007825S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1007826S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1007110S1 (en) | 2022-03-23 | 2023-12-12 | Mountain Origins Design LLC | Footwear |
USD997513S1 (en) * | 2022-12-06 | 2023-09-05 | Nike, Inc. | Shoe |
USD998301S1 (en) * | 2022-12-06 | 2023-09-12 | Nike, Inc. | Shoe |
USD998306S1 (en) * | 2022-12-06 | 2023-09-12 | Nike, Inc. | Shoe |
USD998302S1 (en) * | 2022-12-06 | 2023-09-12 | Nike, Inc. | Shoe |
USD998300S1 (en) * | 2022-12-06 | 2023-09-12 | Nike, Inc. | Shoe |
USD997514S1 (en) * | 2022-12-06 | 2023-09-05 | Nike, Inc. | Shoe |
Also Published As
Publication number | Publication date |
---|---|
FR2840163B1 (en) | 2004-09-17 |
CZ20031521A3 (en) | 2004-01-14 |
FR2840163A1 (en) | 2003-12-05 |
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Legal Events
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AS | Assignment |
Owner name: SALOMON S.A., FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FARYS, YVES;CRETINON, FREDERIC;DELGORGUE, GERALD;REEL/FRAME:013581/0585 Effective date: 20021202 |
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