EP0278859B1 - Cross-country ski - Google Patents

Cross-country ski Download PDF

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Publication number
EP0278859B1
EP0278859B1 EP88400257A EP88400257A EP0278859B1 EP 0278859 B1 EP0278859 B1 EP 0278859B1 EP 88400257 A EP88400257 A EP 88400257A EP 88400257 A EP88400257 A EP 88400257A EP 0278859 B1 EP0278859 B1 EP 0278859B1
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EP
European Patent Office
Prior art keywords
cross
separate auxiliary
profile
ski
rib
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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.)
Expired - Lifetime
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EP88400257A
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German (de)
French (fr)
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EP0278859A1 (en
Inventor
Jean-Luc Diard
Philippe Grandjacques
Gilles Recher
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Salomon SAS
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Salomon SAS
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Priority to AT88400257T priority Critical patent/ATE65030T1/en
Publication of EP0278859A1 publication Critical patent/EP0278859A1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/0405—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker
    • A63C5/0411—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker asymmetric
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/20—Non-self-releasing bindings with special sole edge holders instead of toe-straps

Definitions

  • the present invention relates to a cross-country ski comprising a longitudinal rib projecting from its upper face.
  • Cross-country skis which have a longitudinal rib on their upper face (FR-A-2 572 944).
  • This longitudinal rib generally has a trapezoidal cross section, in other words it is delimited by a horizontal upper face and two inclined lateral faces, and this rib with trapezoidal cross section is connected to the lower part of the ski which has a rectangular cross section, of small height, whose short sides constitute the edges of the ski. Due to the reduced height of these edges, such a cross-country ski slides more easily over the snow.
  • the upper longitudinal rib contributes to the lateral guiding of the boot mounted on the cross-country ski which is adapted for this purpose thanks to the provision, in its sole, of a groove having in cross section a shape complementary to that of the rib. ski.
  • the present invention relates to improvements made to such cross-country skiing with the aim of easily adapting its rigidity or its elastic response and improving its technique, without notably increasing its weight.
  • this cross-country ski comprising a longitudinal rib at its upper part is characterized in that it comprises on each side of the longitudinal guide rib and at least in the area where a boot is supported on the ski, an auxiliary profile. attached attached attached to the lateral face of the longitudinal guide rib and of height less than this rib, this auxiliary auxiliary profile having a horizontal upper surface on which the sole of the shoe is supported.
  • auxiliary profiles allow, thanks to a judicious choice of their material and their shape, to easily modify the characteristics of a cross-country ski with a longitudinal guide rib, with regard in particular to its flexibility and its response to stresses.
  • FIG. 1 and 2 a cross-country ski 1 which has, at its upper part, a longitudinal guide rib 2 with a trapezoidal cross section.
  • This trapezoidal cross section is not, however, limiting and it could have any other suitable shape, in particular polygonal or curved.
  • the cross section of the rib 2 is formed by the superposition of two sections elementary isosceles trapezoid shape.
  • the guide rib 2 thus has a horizontal upper face 2a constituting the small base of the upper trapezoidal section which is extended by two inclined lateral faces 2b, 2c.
  • This upper trapezoidal section is connected to a lower trapezoidal section whose small upper base corresponds to the large base of the upper trapezoidal section.
  • the lower trapezoidal section comprises two lower inclined side walls 2d, 2e which are less inclined than the upper inclined side walls 2b, 2c.
  • the two lower inclined side walls 2d, 2e are connected to the vertical edges 1a, 1b, of low height, of the ski 1 which extend to the sole 3 of this ski.
  • the cross-country ski 1 is provided, on each side of the longitudinal guide rib 2, with an attached auxiliary profile 4 which is rigid in the case of the embodiment shown in FIGS. 1 and 2.
  • This profile is fixed to the inclined lateral faces 2d, 2c of the rib 2 by any suitable means, for example by gluing.
  • the profile 4 has a cross section in the shape of a right triangle and it includes a horizontal upper face 4a, a vertical external face 4b and an inclined internal face 4c corresponding to the hypotenuse of the right triangle.
  • the triangular cross section of the added auxiliary profile 4 is such that its vertical external face 4b is located in the plane of the edge 1a, 1b of the ski, that its inclined internal face 4c is applied to one of the lower inclined faces 2d, 2e of the rib 2 and that its upper horizontal face 4a is situated in the horizontal plane constituting the plane of separation of the two trapezoidal sections of the rib 2.
  • the rigid auxiliary auxiliary profile 4 can be full as shown in the left part of Figure 2 or hollow as shown in the right part of this figure, provided that in the latter case the wall of the profile is sufficiently thick to provide the desired rigidity.
  • the forecast on both sides of the guide rib 2, of rigid attached auxiliary sections 4 makes it possible to modify at will the overall characteristic of rigidity or elasticity of the cross-country ski 1, according to the wishes.
  • FIG. 2 also shows the sole 5 of a ski boot which is provided, in its lower face, with a longitudinal groove 6 which covers the guide rib 2.
  • This sole 5 is supported on the upper horizontal faces 4a of the profiles rigid attached auxiliaries 4 and the bottom of the groove 6 is located a little above the upper face 2a of the rib 2, because the depth p of this groove 6 is slightly greater than the height h of the upper trapezoidal section 2a, 2b, 2c of the rib 2.
  • the cross-country ski 1 carries, on each side of the longitudinal guide rib 2, an attached auxiliary profile 7 made of flexible and elastic material, for example rubber . Consequently when the skier exerts a strong pressure on his ski, at the time of the support on the ground, the elastic material of each added auxiliary profile 7 is compressed by the sole 5 of the ski boot, as is represented in FIG. 4
  • This compression is made possible because the depth p of the groove 6 of the sole 5 is greater than the height h of the upper trapezoidal section 2a, 2b, 2c, of the rib 2, so that the sole 6 can s lower with respect to this rib, by compressing the two added auxiliary sections 7.
  • This compression therefore results, when the skier releases his pressure on the ski at the start of the advance travel of this ski, by an elastic return of profile material 7 in the relaxed state which thus contributes to the action of the skier's foot.
  • the longitudinal guide rib 2 has a cross section having the shape of a single isosceles trapezoid.
  • the inclined lateral faces 2b, 2c extend downwards, with the same slope, up to low distance from the sole 3, and they are, at this point, connected to horizontal wings 2f, 2g of small width, which extend outwards to the edges 1a, 1b.
  • each added auxiliary profile 8 has a cross section in the shape of a rectangular trapezoid defined by a horizontal upper face 8a, a vertical external face 8b located in the vertical plane of the edge 1a, 1b, a horizontal lower face 8c in contact with the 'lower horizontal wing 2f, 2g and of the same width as the latter, and an inclined internal face 8d, of the same inclination as the inclined lateral faces 2b, 2c of the rib 2, and in contact with the lower part of these faces.
  • Each profile 8 is shown as being rigid in FIG. 5 and it can be either full (left part of FIG. 5) or hollow (right part of FIG. 5).
  • Figures 6 and 7 show an alternative embodiment in which the added auxiliary profiles 9 have the same trapezoidal cross section as the profiles 8 but are made of a flexible and elastic material, which allows their compression by the sole 5 of the shoe as shown in Figure 7.
  • the cross-country ski comprises two added auxiliary profiles 11, 12 of trapezoidal cross section, which are arranged on either side of the longitudinal guide rib and are connected to one another.
  • the two added auxiliary profiles 11, 12 constitute the extreme lateral parts of a single profile which comprises an upper central part 13 of trapezoidal shape, flared downwards, which covers the upper part of an internal profile 14 also of trapezoidal cross section, flared downwards and connecting to the sole 3 of the ski.
  • the two lateral sections 11, 12 respectively comprise upper horizontal faces 11a, 12a, which are connected to external vertical faces 11b, 12b constituting the edges of the ski and which end in lower horizontal wings 11c, 12c extending towards the inside.
  • the central trapezoidal part upper 13 comprises, for its part, an upper horizontal face 13a and two inclined lateral faces 13b, 13c which are respectively connected to the upper horizontal faces 11a, 12a of the two lateral profiles 11, 12.
  • the internal profile 14 of trapezoidal cross section comprises an upper horizontal face 14a on which is pressed the upper horizontal face 13a of the upper trapezoidal central part 13, and two inclined lateral faces 14b, 14c on the upper parts of which the inclined lateral faces are pressed 13b, 13c of the trapezoidal upper central part 13.
  • These lateral inclined faces 14b, 14c end, at their lower ends, by wings 14d, 14e, extending outwards and on which the internal lower wings 11c are pressed.
  • the volumes delimited inside the ski can be left empty or on the contrary they can be filled with a rigid but light material such as a foam.
  • FIGS. 9 and 10 illustrate how an elastic added auxiliary profile, such as profile 7, gives way and reacts when a ski boot 15, which is articulated, relative to the cross-country ski 1, about a horizontal axis and transverse 16, pivots about this axis, by lifting the heel when pressing on the ski for advancing the other ski. It can be seen, in FIGS. 9 and 10, that the end 5a of the sole 5 penetrates slightly into the elastic added auxiliary profile 7, during the pivoting of the shoe 15 in an anti-clockwise direction around the axis 16, and that the elastic deformation of the profile 7 results in a return force f tending to bring the boot 15 back to the horizontal position on the ski.
  • the front part 5a of the sole 5 of the shoe is in abutment against an inclined face of a raised part 7a of the elastic added auxiliary profile 7. From this makes the pivoting movement of the shoe 15, anticlockwise shows around the transverse axis 16, results in the depression, by the end of the sole 5a, of the inclined face of the elastic raised part 7a which forms a slight bead 17, strongly exaggerated in FIG. 12, projecting relative to the upper surface, this bead 17 contributing to the elastic return of the boot flat on the ski.
  • the added auxiliary profile can extend only under the boot 15 (FIG. 13) or over practically the entire length of the cross-country ski 1 ( Figure 14) or only over part of this length.
  • the two added auxiliary sections situated respectively on the two sides of the longitudinal guide rib 2 can be of the same type or possibly of different types, for example rigid on one side of the rib 2 and flexible and elastic on the other.

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Abstract

PCT No. PCT/FR88/00061 Sec. 371 Date Oct. 5, 1988 Sec. 102(e) Date Oct. 5, 1988 PCT Filed Feb. 4, 1988 PCT Pub. No. WO88/05676 PCT Pub. Date Aug. 11, 1988.The ski comprises at its top part a longitudinal rib usable particularly for the lateral guiding of a shoe. In order to improve the technical qualities of the ski without substantially increasing its weight, the cross-section of the rib is comprised at least in the front part of the central area (A) where the shoe sole is bearing, of the superposition of at least two elementary sections (2,3) having each the shape of a quadrilateral and interconnected by a common side forming the lower side of the upper elementary section and the upper side of the lower elementary section of which the lower side is horizontal, the lateral sides (7,8) of the lower elementary section (3) converging upwards and being more inclined with respect to a vertical and longitudinal plane than those (5,6) of the upper elementary section (2).

Description

La présente invention concerne un ski de fond comportant une nervure longitudinale en saillie par rapport à sa face supérieure.The present invention relates to a cross-country ski comprising a longitudinal rib projecting from its upper face.

On connait déjà des skis de fond qui comportent une nervure longitudinale sur leur face supérieure (FR-A-2 572 944). Cette nervure longitudinale présente en général une section droite trapézoïdale autrement dit elle est délimitée par une face supérieure horizontale et deux faces latérales inclinées, et cette nervure à section droite trapézoïdale se raccorde à la partie inférieure du ski qui présente une section droite rectangulaire, de faible hauteur, dont les petits côtés constituent les chants du ski. Du fait de la hauteur réduite de ces chants, un tel ski de fond glisse plus facilement sur la neige. Par ailleurs la nervure longitudinale supérieure contribue au guidage latéral de la chaussure montée sur le ski de fond laquelle est adaptée à cet effet grâce à la prévision, dans sa semelle, d'une rainure présentant en section droite une forme complémentaire de celle de la nervure du ski.Cross-country skis are already known which have a longitudinal rib on their upper face (FR-A-2 572 944). This longitudinal rib generally has a trapezoidal cross section, in other words it is delimited by a horizontal upper face and two inclined lateral faces, and this rib with trapezoidal cross section is connected to the lower part of the ski which has a rectangular cross section, of small height, whose short sides constitute the edges of the ski. Due to the reduced height of these edges, such a cross-country ski slides more easily over the snow. Furthermore, the upper longitudinal rib contributes to the lateral guiding of the boot mounted on the cross-country ski which is adapted for this purpose thanks to the provision, in its sole, of a groove having in cross section a shape complementary to that of the rib. ski.

La présente invention concerne des perfectionnements apportés à un tel ski de fond dans le but d'adapter aisément sa rigidité ou sa réponse élastique et d'améliorer sa technique, sans augmenter notablement son poids.The present invention relates to improvements made to such cross-country skiing with the aim of easily adapting its rigidity or its elastic response and improving its technique, without notably increasing its weight.

A cet effet ce ski de fond comportant une nervure longitudinale à sa partie supérieure est caractérisé en ce qu'il comprend de chaque coté de la nervure de guidage longitudinale et au moins dans la zone où une chaussure prend appui sur le ski, un profilé auxiliaire rapporté fixé à la face latérale de la nervure de guidage longitudinale et de hauteur inférieure à cette nervure, ce profilé auxiliaire rapporté présentant une surface supérieure horizontale sur laquelle prend appui la semelle de la chaussure.To this end, this cross-country ski comprising a longitudinal rib at its upper part is characterized in that it comprises on each side of the longitudinal guide rib and at least in the area where a boot is supported on the ski, an auxiliary profile. attached attached to the lateral face of the longitudinal guide rib and of height less than this rib, this auxiliary auxiliary profile having a horizontal upper surface on which the sole of the shoe is supported.

Les profilés auxiliaires rapportés permettent, grâce à un choix judicieux de leur matière et de leur forme, de modifier aisément les caractéristiques d'un ski de fond à nervure de guidage longitudinale, en ce qui concerne notamment sa souplesse et sa réponse aux sollicitations.The added auxiliary profiles allow, thanks to a judicious choice of their material and their shape, to easily modify the characteristics of a cross-country ski with a longitudinal guide rib, with regard in particular to its flexibility and its response to stresses.

On décrira ci-après, à titre d'exemples non limitatifs, diverses formes d'exécution de la présente invention, en référence au dessin annexé sur lequel:

  • La figure 1 est une vue partielle en perspective d'un ski de fond à nervure de guidage longitudinale de chaque côté de laquelle est fixé un profilé auxiliaire rapporté.
  • la figure 2 est une vue en coupe verticale et transversale, à plus grande échelle, faite suivant la ligne II-II de la figure 1.
  • La figure 3 et 4 sont des vues en coupe verticale et transversale d'un ski de fond dont la nervure de guidage longitudinale est flanquée, de chaque côté, d'un profilé auxiliaire rapporté élastique.
  • La figure 5 à 8 sont des vues en coupe verticale et transversale de diverses variantes d'exécution.
  • Les figures 9 à 12 sont des vues en élévation schématiques illustrant l'effet de rappel élastique assuré par chaque profilé auxiliaire rapporté.
  • La figure 13 est une vue en élévation schématique illustrant un ski de fond dans lequel le profilé auxiliaire rapporté s'étend uniquement sous la chaussure de ski.
  • La figure 14 est une vue en élévation schématique d'un ski de fond dans lequel le profilé auxiliaire rapporté s'étend pratiquement sur toute la longueur du ski.
Various embodiments of the present invention will be described below, by way of non-limiting examples, with reference to the appended drawing in which:
  • Figure 1 is a partial perspective view of a cross-country ski with a longitudinal guide rib on each side of which is attached an attached auxiliary profile.
  • FIG. 2 is a view in vertical and transverse section, on a larger scale, taken along line II-II of FIG. 1.
  • FIGS. 3 and 4 are views in vertical and transverse section of a cross-country ski, the longitudinal guide rib of which is flanked, on each side, by an elastic added auxiliary profile.
  • Figure 5 to 8 are views in vertical and cross section of various alternative embodiments.
  • Figures 9 to 12 are schematic elevational views illustrating the elastic return effect provided by each added auxiliary profile.
  • Figure 13 is a schematic elevational view illustrating a cross-country ski in which the attached auxiliary section extends only under the ski boot.
  • Figure 14 is a schematic elevational view of a cross-country ski in which the attached auxiliary section extends substantially over the entire length of the ski.

Sur les figures 1 et 2 est représenté un ski de fond 1 qui présente, à sa partie supérieure, une nervure de guidage longitudinale 2 à section droite trapézoïdale. Cette section droite trapézoïdale n'est toutefois pas limitative et elle pourrait présenter toute autre forme appropriée notamment polygonale ou courbe. Dans la forme d'exécution représentée sur les figures 1 et 2 la section droite de la nervure 2 est contituée par la superposition de deux sections élémentaires en forme de trapèze isocèle. La nervure de guidage 2 présente ainsi une face supérieure horizontale 2a constituant la petite base de la section trapézoïdale supérieure laquelle est prolongée par deux faces latérales inclinées 2b, 2c. Cette section trapézoïdale supérieure se raccorde à une section trapézoïdale inférieure dont la petite base supérieure correspond à la grande base de la section trapézoïdale supérieure. La section trapézoïdale inférieure comprend deux parois latérales inclinées inférieures 2d, 2e qui sont moins inclinées que les parois latérales inclinées supérieures 2b, 2c. Les deux parois latérales inclinées inférieures 2d, 2e, se raccordent aux chants verticaux 1a, 1b, de faible hauteur, du ski 1 qui s'étendent jusqu'à la semelle 3 de ce ski.In Figures 1 and 2 is shown a cross-country ski 1 which has, at its upper part, a longitudinal guide rib 2 with a trapezoidal cross section. This trapezoidal cross section is not, however, limiting and it could have any other suitable shape, in particular polygonal or curved. In the embodiment shown in Figures 1 and 2 the cross section of the rib 2 is formed by the superposition of two sections elementary isosceles trapezoid shape. The guide rib 2 thus has a horizontal upper face 2a constituting the small base of the upper trapezoidal section which is extended by two inclined lateral faces 2b, 2c. This upper trapezoidal section is connected to a lower trapezoidal section whose small upper base corresponds to the large base of the upper trapezoidal section. The lower trapezoidal section comprises two lower inclined side walls 2d, 2e which are less inclined than the upper inclined side walls 2b, 2c. The two lower inclined side walls 2d, 2e, are connected to the vertical edges 1a, 1b, of low height, of the ski 1 which extend to the sole 3 of this ski.

Suivant l'invention le ski de fond 1 est pourvu, de chaque côté de la nervure de guidage longitudinale 2, d'un profilé auxiliaire rapporté 4 qui est rigide dans le cas de la forme d'exécution représentée sur les figures 1 et 2. Ce profilé est fixé sur les faces latérales inclinées 2d, 2c de la nervure 2 par tout moyen approprié, par exemple par collage. Le profilé 4 présente une section droite en forme de triangle rectangle et il comprend une face supérieure horizontale 4a, une face externe verticale 4b et une face interne inclinée 4c correspondant à l'hypothénuse du triangle rectangle. La section droite triangulaire du profilé auxiliaire rapporté 4 est telle que sa face externe verticale 4b soit située dans le plan du chant 1a, 1b du ski, que sa face interne inclinée 4c s'applique sur l'une des faces inclinées inférieures 2d,2e de la nervure 2 et que sa face horizontale supérieure 4a soit située dans le plan horizontal constituant le plan de séparation des deux sections trapézoïdales de la nervure 2.According to the invention, the cross-country ski 1 is provided, on each side of the longitudinal guide rib 2, with an attached auxiliary profile 4 which is rigid in the case of the embodiment shown in FIGS. 1 and 2. This profile is fixed to the inclined lateral faces 2d, 2c of the rib 2 by any suitable means, for example by gluing. The profile 4 has a cross section in the shape of a right triangle and it includes a horizontal upper face 4a, a vertical external face 4b and an inclined internal face 4c corresponding to the hypotenuse of the right triangle. The triangular cross section of the added auxiliary profile 4 is such that its vertical external face 4b is located in the plane of the edge 1a, 1b of the ski, that its inclined internal face 4c is applied to one of the lower inclined faces 2d, 2e of the rib 2 and that its upper horizontal face 4a is situated in the horizontal plane constituting the plane of separation of the two trapezoidal sections of the rib 2.

Le profilé auxiliaire rapporté 4 rigide peut être plein ainsi qu'il est représenté dans la partie gauche de la figure 2 ou creux comme il est représenté dans la partie droite de cette figure, à condition que dans ce dernier cas la paroi du profilé soit suffisamment épaisse pour assurer la rigidité voulue. La prévision, de part et d'autre de la nervure de guidage 2, de profilés auxiliaires rapportés rigides 4 permet de modifier à volonté la caractéristique d'ensemble de rigidité ou d'élasticité du ski de fond 1, suivant les desiderata.The rigid auxiliary auxiliary profile 4 can be full as shown in the left part of Figure 2 or hollow as shown in the right part of this figure, provided that in the latter case the wall of the profile is sufficiently thick to provide the desired rigidity. The forecast on both sides of the guide rib 2, of rigid attached auxiliary sections 4 makes it possible to modify at will the overall characteristic of rigidity or elasticity of the cross-country ski 1, according to the wishes.

La figure 2 représente également la semelle 5 d'une chaussure de ski qui est pourvue, dans sa face inférieure, d'une rainure longitudinale 6 venant coiffer la nervure de guidage 2. Cette semelle 5 prend appui sur les faces horizontales supérieures 4a des profilés auxiliaires rapportés rigides 4 et le fond de la rainure 6 est situé un peu au-dessus de la face supérieure 2a de la nervure 2, du fait que la profondeur p de cette rainure 6 est légèrement supérieure à la hauteur h de la section trapézoïdale supérieure 2a, 2b, 2c de la nervure 2.FIG. 2 also shows the sole 5 of a ski boot which is provided, in its lower face, with a longitudinal groove 6 which covers the guide rib 2. This sole 5 is supported on the upper horizontal faces 4a of the profiles rigid attached auxiliaries 4 and the bottom of the groove 6 is located a little above the upper face 2a of the rib 2, because the depth p of this groove 6 is slightly greater than the height h of the upper trapezoidal section 2a, 2b, 2c of the rib 2.

Dans la variante d'exécution de l'invention représentée sur les figures 3 et 4 le ski de fond 1 porte, de chaque côté de la nervure de guidage longitudinale 2, un profilé auxiliaire rapporté 7 en matière souple et élastique, par exemple en caoutchouc. Par conséquent lorsque le skieur exerce une forte pression sur son ski, au moment de l'appui au sol, le matériau élastique de chaque profilé auxiliaire rapporté 7 est comprimé par la semelle 5 de la chaussure de ski, ainsi est représenté sur la figure 4. Cette compression est rendue possible du fait que la profondeur p de la rainure 6 de la semelle 5 est supérieure à la hauteur h de la section trapézoïdale supérieure 2a, 2b, 2c, de la nervure 2, si bien que la semelle 6 peut s'abaisser par rapport à cette nervure, en comprimant les deux profilés auxiliaires rapportés 7. Cette compression se traduit donc ensuite, lorsque le skieur relâche sa pression sur le ski au début de la course d'avance de ce ski, par un retour élastique de matériau du profilé 7 à l'état détendu lequel contribue ainsi à l'action du pied du skieur.In the alternative embodiment of the invention shown in FIGS. 3 and 4, the cross-country ski 1 carries, on each side of the longitudinal guide rib 2, an attached auxiliary profile 7 made of flexible and elastic material, for example rubber . Consequently when the skier exerts a strong pressure on his ski, at the time of the support on the ground, the elastic material of each added auxiliary profile 7 is compressed by the sole 5 of the ski boot, as is represented in FIG. 4 This compression is made possible because the depth p of the groove 6 of the sole 5 is greater than the height h of the upper trapezoidal section 2a, 2b, 2c, of the rib 2, so that the sole 6 can s lower with respect to this rib, by compressing the two added auxiliary sections 7. This compression therefore results, when the skier releases his pressure on the ski at the start of the advance travel of this ski, by an elastic return of profile material 7 in the relaxed state which thus contributes to the action of the skier's foot.

Dans la variante d'exécution de l'invention représentée sur la figure 5 la nervure de guidage longitudinale 2 a une section droite présentant la forme d'un seul trapèze isocèle. Autrement dit les faces latérales inclinées 2b, 2c s'étendent vers le bas, avec la même pente, jusqu'à faible distance de la semelle 3, et elles sont, à cet endroit, raccordées à des ailes horizontales 2f, 2g de petite largeur, qui s'étendent vers l'extérieur jusqu'aux chants 1a, 1b. De ce fait chaque profilé auxiliaire rapporté 8 présente une section droite en forme de trapèze rectangle défini par une face supérieure horizontale 8a, une face externe verticale 8b située dans le plan vertical du chant 1a, 1b, une face inférieure horizontale 8c en contact avec l'aile horizontale inférieure 2f, 2g et de même largeur que celle-ci, et une face interne inclinée 8d, de même inclinaison que les faces latérales inclinées 2b, 2c de la nervure 2, et en contact avec la partie inférieure de ces faces. Chaque profilé 8 est représenté comme étant rigide sur la figure 5 et il peut être soit plein (partie gauche de la figure 5), soit creux (partie droite de la figure 5).In the alternative embodiment of the invention shown in Figure 5 the longitudinal guide rib 2 has a cross section having the shape of a single isosceles trapezoid. In other words, the inclined lateral faces 2b, 2c extend downwards, with the same slope, up to low distance from the sole 3, and they are, at this point, connected to horizontal wings 2f, 2g of small width, which extend outwards to the edges 1a, 1b. Therefore each added auxiliary profile 8 has a cross section in the shape of a rectangular trapezoid defined by a horizontal upper face 8a, a vertical external face 8b located in the vertical plane of the edge 1a, 1b, a horizontal lower face 8c in contact with the 'lower horizontal wing 2f, 2g and of the same width as the latter, and an inclined internal face 8d, of the same inclination as the inclined lateral faces 2b, 2c of the rib 2, and in contact with the lower part of these faces. Each profile 8 is shown as being rigid in FIG. 5 and it can be either full (left part of FIG. 5) or hollow (right part of FIG. 5).

Les figures 6 et 7 représentent une variante d'exécution dans laquelle les profilés auxiliaires rapportés 9 ont la même section droite trapézoïdale que les profilés 8 mais sont réalisés en une matière souple et élastique, ce qui permet leur compression par la semelle 5 de la chaussure comme il est représenté sur la figure 7.Figures 6 and 7 show an alternative embodiment in which the added auxiliary profiles 9 have the same trapezoidal cross section as the profiles 8 but are made of a flexible and elastic material, which allows their compression by the sole 5 of the shoe as shown in Figure 7.

Dans la variante d'exécution de l'invention représentée sur la figure 8 le ski de fond comprend deux profilés auxiliaires rapportés 11, 12 de section droite trapézoïdale, lesquels sont disposés de part et d'autre de la nervure de guidage longitudinale et sont reliés l'un à l'autre. Plus particulièrement les deux profilés auxiliaires rapportés 11, 12 constituent les parties latérales extrêmes d'un seul et même profilé qui comprend une partie centrale supérieure 13 de forme trapézoïdale, évasée vers le bas, laquelle vient coiffer la partie supérieure d'un profilé interne 14 de section droite également trapézoïdale, évasée vers la bas et se raccordant à la semelle 3 du ski. Les deux profilés latéraux 11, 12 comportent respectivement des faces horizontales supérieures 11a, 12a, qui se raccordent à des faces verticales externes 11b, 12b consituant les chants du ski et qui se terminent par des ailes horizontales inférieures 11c,12c s'étendant vers l'intérieur. La partie centrale trapézoïdale supérieure 13 comprend, elle, une face horizontale supérieure 13a et deux faces latérales inclinées 13b, 13c qui se raccordent respectivement aux faces horizontales supérieures 11a, 12a des deux profilés latéraux 11, 12.In the alternative embodiment of the invention shown in FIG. 8, the cross-country ski comprises two added auxiliary profiles 11, 12 of trapezoidal cross section, which are arranged on either side of the longitudinal guide rib and are connected to one another. More particularly, the two added auxiliary profiles 11, 12 constitute the extreme lateral parts of a single profile which comprises an upper central part 13 of trapezoidal shape, flared downwards, which covers the upper part of an internal profile 14 also of trapezoidal cross section, flared downwards and connecting to the sole 3 of the ski. The two lateral sections 11, 12 respectively comprise upper horizontal faces 11a, 12a, which are connected to external vertical faces 11b, 12b constituting the edges of the ski and which end in lower horizontal wings 11c, 12c extending towards the inside. The central trapezoidal part upper 13 comprises, for its part, an upper horizontal face 13a and two inclined lateral faces 13b, 13c which are respectively connected to the upper horizontal faces 11a, 12a of the two lateral profiles 11, 12.

Le profilé interne 14 de section droite trapézoïdale comprend une face horizontale supérieure 14a sur laquelle est plaquée la face horizontale supérieure 13a de la partie centrale supérieure trapézoïdale 13, et deux faces latérales inclinées 14b, 14c sur les parties supérieures desquelles sont plaquées les faces latérales inclinées 13b, 13c de la partie centrale supérieure trapézoïdale 13. Ces faces inclinées latérales 14b, 14c se terminent, à leurs extrémités inférieures, par des ailes 14d,14e, s'étendant vers l'extérieur et sur lesquelles sont plaquées les ailes inférieures internes 11c,12c des profilés 11, 12. Les volumes délimités à l'intérieur du ski peuvent laissés vides ou au contraire ils peuvent être remplis d'un matériau rigide mais léger telle qu'une mousse.The internal profile 14 of trapezoidal cross section comprises an upper horizontal face 14a on which is pressed the upper horizontal face 13a of the upper trapezoidal central part 13, and two inclined lateral faces 14b, 14c on the upper parts of which the inclined lateral faces are pressed 13b, 13c of the trapezoidal upper central part 13. These lateral inclined faces 14b, 14c end, at their lower ends, by wings 14d, 14e, extending outwards and on which the internal lower wings 11c are pressed. , 12c of the sections 11, 12. The volumes delimited inside the ski can be left empty or on the contrary they can be filled with a rigid but light material such as a foam.

Les figures 9 et 10 illustrent la façon dont un profilé auxiliaire rapporté élastique, tel que le profilé 7, cède et réagit lorsque une chaussure de ski 15, qui est articulée, par rapport au ski de fond 1, autour d'un axe horizontal et transversal 16, pivote autour de cet axe, par soulèvement du talon au moment de l'appui sur le ski pour l'avancement de l'autre ski. On voit, sur les figures 9 et 10, que le bout 5a de la semelle 5 pénètre légèrement dans le profilé auxiliaire rapporté élastique 7, lors du pivotement de la chaussure 15 dans le sens inverse des aiguilles d'une montre autour de l'axe 16, et que la déformation élastique du profilé 7 se traduit par un effort de rappel f tendant à ramener la chaussure 15 en position horizontale sur le ski.FIGS. 9 and 10 illustrate how an elastic added auxiliary profile, such as profile 7, gives way and reacts when a ski boot 15, which is articulated, relative to the cross-country ski 1, about a horizontal axis and transverse 16, pivots about this axis, by lifting the heel when pressing on the ski for advancing the other ski. It can be seen, in FIGS. 9 and 10, that the end 5a of the sole 5 penetrates slightly into the elastic added auxiliary profile 7, during the pivoting of the shoe 15 in an anti-clockwise direction around the axis 16, and that the elastic deformation of the profile 7 results in a return force f tending to bring the boot 15 back to the horizontal position on the ski.

Dans la variante d'exécution de l'invention représentée sur les figures 11 et 12 la partie antérieure 5a de la semelle 5 de la chaussure est en butée contre une face inclinée d'une partie surélevée 7a du profilé auxiliaire rapporté élastique 7. De ce fait le mouvement de pivotement de la chaussure 15, dans le sens inverse des aiguilles d'une montre autour de l'axe transversal 16, se traduit par l'enfoncement, par le bout de la semelle 5a, de la face inclinée de la partie surélevée élastique 7a laquelle forme un léger bourrelet 17, fortement exagéré sur la figure 12, en saillie par rapport à la surface supérieure, ce bourrelet 17 contribuant au rappel élastique de la chaussure à plat sur le ski.In the variant embodiment of the invention shown in FIGS. 11 and 12, the front part 5a of the sole 5 of the shoe is in abutment against an inclined face of a raised part 7a of the elastic added auxiliary profile 7. From this makes the pivoting movement of the shoe 15, anticlockwise shows around the transverse axis 16, results in the depression, by the end of the sole 5a, of the inclined face of the elastic raised part 7a which forms a slight bead 17, strongly exaggerated in FIG. 12, projecting relative to the upper surface, this bead 17 contributing to the elastic return of the boot flat on the ski.

Comme on peut le voir sur les figures 13 et 14, le profilé auxiliaire rapporté, qu'il soit élastique ou rigide, peut s'étendre uniquement sous la chaussure 15 (figure 13) soit sur pratiquement toute la longueur du ski de fond 1 (figure 14) ou encore sur une partie seulement de cette longueur.As can be seen in FIGS. 13 and 14, the added auxiliary profile, whether elastic or rigid, can extend only under the boot 15 (FIG. 13) or over practically the entire length of the cross-country ski 1 ( Figure 14) or only over part of this length.

Dans toutes les formes d'exécution de l'invention qui ont été décrites ci-dessus, les deux profilés auxiliaires rapportés situés respectivement des deux côtés de la nervure de guidage longitudinale 2 peuvent être de même type ou éventuellement de types différents, par exemple rigide d'un côté de la nervure 2 et souple et élastique de l'autre.In all of the embodiments of the invention which have been described above, the two added auxiliary sections situated respectively on the two sides of the longitudinal guide rib 2 can be of the same type or possibly of different types, for example rigid on one side of the rib 2 and flexible and elastic on the other.

Claims (14)

1. Cross-country ski comprising a longitudinal guiding rib in its top part, characterized in that it comprises, on either side of the longitudinal guiding rib (2) and at least in the area where a shoe bears on the ski, a separate auxiliary profile (4, 7, 8, 9; 11. 12) fixed to the side face of the longitudinal guiding rib (2) and of height less than this rib, said separate auxiliary profile (4, 7, 8, 9; 11, 12) presenting a horizontal top surface (4a; 11a; 12a) on which the sole of the shoe bears.
2. Cross-country ski according to Claim 1, characterized in that each separate auxiliary profile (4, 7, 8, 9) presents an inclined inner face applied against an inclined lateral face (2b, 2c, 2d, 2e) of the longitudinal guiding rib (2).
3. Cross-country ski according to Claim 2 in which the inclined faces (2d, 2e) of the rib (2) directly join the edges (1a, 1b) of the ski, characterized in that each separate auxiliary profile (4,7) has a cross-section in the form of a right-angled triangle of which the hypotenuse corresponds to the inclined inner face (4c) of the profile.
4. Cross-country ski according to Claim 2 in which the inclined lateral faces (2b, 2c) of the rib (2) are extended, at their lower ends, by lower horizontal flanges (2f, 2g) extending outwardly and joining the edges (1a, 1b) of the ski, characterized in that each separate auxiliary profile (8,9) has a cross-section in the form of a right-angled trapezium of which the small base (8c) is in contact with the lower horizontal flange (2f, 2g) of the rib (2) and the inclined side constitutes the inner face in contact with the inclined lateral face (2b, 2c) of the rib (2).
5. Cross-country ski according to any one of the preceding Claims, characterized in that the separate auxiliary profile (4, 8) is made of a rigid material.
6. Cross-country ski according to any one of Claims 1 to 5, characterized in that the separate auxiliary profile (7, 9) is made of a supple and elastic material.
7. Cross-country ski according to any one of the preceding Claims, characterized in that the separate auxiliary profile (4, 7, 8, 9) is solid.
8. Cross-country ski according to any one of Claims 1 to 7, characterized in that the separate auxiliary profile (4, 7, 8, 9) is hollow.
9. Cross-country ski according to Claim 1, characterized in that the two separate auxiliary profiles (11, 12), disposed on either side of the longitudinal guiding rib (2), are joined to each other.
10. Cross-country ski according to Claim 9, characterized in that the two separate auxiliary profiles (11, 12) constitute the end lateral parts of one and the same profile which comprises an upper central part (13) of trapezoidal form, widening downwardly, which covers the top part of an inner profile (14) of likewise trapezoidal cross section, widening downwardly and joining the sole (3) of the ski.
11. Cross-country ski according to Claim 10, characterized in that the two lateral profiles (11, 12) respectively comprise top horizontal faces (11a, 12a) which join outer vertical faces (11b, 12b) constituting the edges of the ski and which terminate in lower horizontal flanges (11c, 12c) extending inwardly, the top trapezoidal central part (13) comprises a top horizontal face (13a) and two inclined lateral faces (13b, 13c) which respectively join the top horizontal faces (11a, 12a) of the two lateral profiles (11, 12), the inner profile (14) of trapezoidal cross section comprises a top horizontal face (14a) on which is applied the top horizontal face (13a) of the top trapezoidal central part (13), and two inclined lateral faces (14b, 14c) on the top parts of which are applied the inclined lateral faces (13b, 13c) of the trapezoidal top central part (13), and these lateral inclined faces (14b, 14c) terminate, at their lower ends, in flanges (14d, 14e) extending outwardly and on which are applied the inner lower flanges (11c, 12c) of the profiles (11, 12).
12. Cross-country ski according to any one of the preceding Claims, characterized in that the separate auxiliary profile (7) extends solely beneath the bearing zone of the shoe (15).
13. Cross-country ski according to any one of Claims 1 to 1 (sic.), characterized in that the separate auxiliary profile (7) extends over the whole length of the ski or over a part of this length.
14. Cross-country ski according to any one of the preceding Claims, characterized in that the separate auxiliary profile (4, 7, 8, 9; 11, 12) presents a vertical outer face (4b; 11b; 12b) located in the vertical plane of the edge (1a, 1b) of the ski.
EP88400257A 1987-02-05 1988-02-04 Cross-country ski Expired - Lifetime EP0278859B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400257T ATE65030T1 (en) 1987-02-05 1988-02-04 CROSS-COUNTRY SKI.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR878701420A FR2610526B1 (en) 1987-02-05 1987-02-05 CROSS-COUNTRY SKI COMPRISING A LONGITUDINAL RIB PROJECTING IN RELATION TO ITS TOP SIDE
FR8701420 1987-02-05

Publications (2)

Publication Number Publication Date
EP0278859A1 EP0278859A1 (en) 1988-08-17
EP0278859B1 true EP0278859B1 (en) 1991-07-10

Family

ID=9347627

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88400257A Expired - Lifetime EP0278859B1 (en) 1987-02-05 1988-02-04 Cross-country ski
EP88400256A Expired - Lifetime EP0283331B1 (en) 1987-02-05 1988-02-04 Ski having a longitudinal upper rib

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88400256A Expired - Lifetime EP0283331B1 (en) 1987-02-05 1988-02-04 Ski having a longitudinal upper rib

Country Status (8)

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US (2) US4957304A (en)
EP (2) EP0278859B1 (en)
AT (2) ATE76319T1 (en)
DE (2) DE3871199D1 (en)
FI (2) FI884577A0 (en)
FR (1) FR2610526B1 (en)
NO (1) NO164881C (en)
WO (2) WO1988005676A1 (en)

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FR2634131B1 (en) * 1988-07-13 1990-04-27 Salomon Sa FOOTWEAR AND SOLE, ESPECIALLY FOR CROSS-COUNTRY SKIING
US5249819A (en) * 1988-09-23 1993-10-05 Head Sportgerate Gesellschaft M.B.H. & Co., Ohg Ski having a hollow body of uniform width
AT394811B (en) * 1988-09-23 1992-06-25 Head Sportgeraete Gmbh SKI
FR2638976B1 (en) * 1988-11-14 1991-02-08 Salomon Sa DEVICE FOR LATERAL GUIDANCE OF A FIXED SKI BOOT, AT ITS FRONT END, ON A SKI SUCH AS A CROSS-COUNTRY SKI
FR2652509B1 (en) * 1989-10-04 1991-12-20 Salomon Sa GUIDE AREA OF A CROSS-COUNTRY SKI SHOE.
FR2659025B1 (en) * 1990-03-02 1992-05-15 Salomon Sa DEVICE FOR RECALLING A SKI SHOE ON A SKI.
FR2660569B1 (en) * 1990-04-06 1993-07-09 Salomon Sa BINDING FOR CROSS-COUNTRY SKIING.
AT397210B (en) * 1990-04-12 1994-02-25 Kaestle Ag SKI WITH SKI BINDING
FR2668709A1 (en) * 1990-11-06 1992-05-07 Salomon Sa Lateral guide device for a boot on a cross-country ski
FR2672505B1 (en) * 1991-02-08 1993-05-21 Salomon Sa WINTER SPORTS SKIING INCLUDING A MOUNTING PLATFORM.
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FR2705248B1 (en) * 1993-05-14 1995-07-28 Salomon Sa Device for retaining a boot on a sliding board.
FR2705905B1 (en) * 1993-06-02 1995-07-07 Rossignol Sa Advanced profile ski.
FR2718651B1 (en) * 1994-04-15 1996-06-14 Rossignol Sa Alpine skiing.
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FR2834906B1 (en) * 2002-01-24 2004-04-02 Rossignol Sa IMPROVEMENT FOR SNOW SNOWBOARD
US6857653B2 (en) * 2002-10-31 2005-02-22 Anton F. Wilson Gliding skis
FR2848868B1 (en) * 2002-12-19 2007-01-19 Salomon Sa SLIDING OR ROLLING BOARD
US7073810B2 (en) * 2003-06-25 2006-07-11 Wilson Anton F Ski with tunnel and enhanced edges
FR2859110B1 (en) * 2003-09-03 2006-04-07 Salomon Sa BACKGROUND SKI SYSTEM WITH DIRECT SUPPORT SIDE SURFACE

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Also Published As

Publication number Publication date
NO884357L (en) 1988-11-29
FR2610526B1 (en) 1989-12-01
DE3863552D1 (en) 1991-08-14
WO1988005676A1 (en) 1988-08-11
WO1988005675A1 (en) 1988-08-11
US4957304A (en) 1990-09-18
US5064214A (en) 1991-11-12
FI884576A0 (en) 1988-10-05
FI884577A (en) 1988-10-05
ATE76319T1 (en) 1992-06-15
EP0278859A1 (en) 1988-08-17
FI884577A0 (en) 1988-10-05
EP0283331B1 (en) 1992-05-20
NO884357D0 (en) 1988-09-30
NO164881C (en) 1990-11-28
FI884576A (en) 1988-10-05
ATE65030T1 (en) 1991-07-15
DE3871199D1 (en) 1992-06-25
FR2610526A1 (en) 1988-08-12
NO164881B (en) 1990-08-20
EP0283331A1 (en) 1988-09-21

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