EP0543743B1 - Ski with nonrectangular section - Google Patents

Ski with nonrectangular section Download PDF

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Publication number
EP0543743B1
EP0543743B1 EP92420415A EP92420415A EP0543743B1 EP 0543743 B1 EP0543743 B1 EP 0543743B1 EP 92420415 A EP92420415 A EP 92420415A EP 92420415 A EP92420415 A EP 92420415A EP 0543743 B1 EP0543743 B1 EP 0543743B1
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EP
European Patent Office
Prior art keywords
ski
shell
core
ski according
reinforcement
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.)
Expired - Lifetime
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EP92420415A
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German (de)
French (fr)
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EP0543743A1 (en
EP0543743B2 (en
Inventor
Roger Abondance
Jean Bauvois
Jean-Marc Forneri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skis Rossignol SA
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Skis Rossignol SA
Rossignol SA
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Application filed by Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Priority to DE9218645U priority Critical patent/DE9218645U1/en
Publication of EP0543743A1 publication Critical patent/EP0543743A1/en
Application granted granted Critical
Publication of EP0543743B1 publication Critical patent/EP0543743B1/en
Publication of EP0543743B2 publication Critical patent/EP0543743B2/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
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • 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

Definitions

  • the present invention relates to a shaped ski, of non-rectangular section.
  • skis of non-rectangular section having a shell forming the upper face and the lateral faces of the ski, these lateral faces possibly being inclined on at least part of their height.
  • this inclination can be constant, or variable over the length of the ski, and provided by flat or curved surfaces.
  • skis comprising a filling core made of synthetic foam, for example polyurethane, which has excellent properties of stability over time, and is of low weight.
  • the advantage of a traditional ski is in particular that it has rigid edges, for example in ABS, or in phenolic laminate, ensuring an excellent transmission of the forces exerted by the snow surface on the ski edges, towards the face upper of it equipped with the fixation for a shoe of the skier.
  • the documents FR 2 611 519 and WO 91/08029 describe a ski with hull whose lateral walls are inclined, comprising a core of rectangular section, and in which the transmission of the forces between the edges and the upper face is carried out by elements of reinforcement located in contact with the inclined walls, and formed for example by sheets of fabric impregnated with resin.
  • the space between the central core and the side faces is occupied by a filling material.
  • Documents FR 2 611 518, FR 2 615 404 and EP 0 394 835 relate to shaped skis, comprising a shell forming the inclined lateral faces of the ski, a core of rectangular section, reinforcing elements in contact with the inclined walls, with provision of a space between the inclined walls and the core, which is filled with viscoelastic elements having a vibration damping power.
  • the object of the invention is to provide a shaped ski, of non-rectangular section, comprising a filling core, for example made of synthetic foam, and in particular of polyurethane, the upper face and at least part of the lateral faces is constituted by a hull, in order to have the quality of finish of the skis comprising a hull, while offering the technical qualities of traditional skis by ensuring, at least at the level of the skate, a direct transmission of the forces from the edges to the upper face of the ski equipped with the binding.
  • a filling core for example made of synthetic foam, and in particular of polyurethane
  • the ski which it concerns comprises two longitudinal reinforcing elements, extending at least in the central part of the ski, arranged on either side of the core, each reinforcing element having a lower face s' extending largely over the width of an edge so as to provide it with effective support, and extending over at least part of the height of the ski, the reinforcing elements not being covered laterally by the shell and forming thus the edges of the ski, at least in the central part of it.
  • this ski comprises, at least in its skid area, reinforcing elements which form edges, and which ensure perfect transmission of forces from the edges to the upper face of the ski equipped with the binding.
  • Such a ski can be produced in different forms.
  • the reinforcing elements are only present in the central part or skate area of the ski, are not covered laterally by the hull and thus form the edges of the ski, while the hull alone forms the walls side of the ski in the end zones thereof.
  • the reinforcing elements extend over a length greater than the length of the central part or skate area of the ski, are not covered laterally by the hull and thus form the edges of the ski over all their length.
  • the reinforcing elements extend over a length greater than the length of the central part or skid area of the ski, are not covered laterally by the shell and form the edges of the ski in the area central of it, and are covered laterally by the hull in the ski areas located in front and behind the skate area.
  • each reinforcing element serves, in the skate area, to support an edge and its opposite face serves to support an edge of the hull.
  • the shell can laterally have two flanges substantially parallel to the plane of the sole, bearing against two faces of the same orientation as the edges.
  • the edges may themselves each have a shaped upper surface serving to support an inclined lateral part of the shell. It is also possible that the upper face of each edge serves to embed one of the edges of the shell.
  • the height of the lateral parts of the hull is substantially constant over the entire length of the ski, while the height of each edge is maximum in the skid zone and decreases respectively towards the front and towards the back.
  • each reinforcing element may have a face, intended to bear against the core, which is perpendicular to the plane of the sole, or on the contrary inclined relative to this perpendicular.
  • the outer face of each edge can be perpendicular to the plane of the sole or inclined relative to this perpendicular.
  • Each reinforcement element can have a base of constant width over the entire length of the ski, the core then having a variable width over the length of the ski, or alternatively each reinforcement element can have a base of variable width, while the core has a constant width over the length of the ski.
  • Each reinforcing element can be monolithic, and made of a synthetic material or of wood, or even be made from several parts butted in the longitudinal direction, these different parts being produced from different materials.
  • each reinforcing element located in the ski skid area is rigid, the end parts being able to be made of more flexible materials, such as viscoelastic materials having good damping characteristics.
  • each reinforcing element can be made of a multimaterial complex, such as Zicral-ABS, Zicral being a mark of an aluminum alloy, and ABS being acrylonitrile-butadiene -styrene.
  • the two reinforcing elements of the same ski can be identical or have different characteristics of rigidity and damping, or also have different geometric characteristics, such as width and / or height .
  • the reinforcing elements extend over the entire active length of the ski, that is to say substantially between the front and rear contact zones of the ski on snow.
  • the filling core of this ski can be produced independently and then assembled with the reinforcing elements and the hull, or else the reinforcing elements can first of all be assembled with the hull, after which the core is injected in situ.
  • the ski shown in FIGS. 1 to 4 comprises a filling core 2 made of synthetic material, for example made of polyurethane foam, a shell 3 forming the upper face 4 of the ski and a part 5 of the side faces thereof, lower edges longitudinal 6, and a sliding sole 7.
  • a filling core 2 made of synthetic material, for example made of polyurethane foam
  • a shell 3 forming the upper face 4 of the ski and a part 5 of the side faces thereof, lower edges longitudinal 6, and a sliding sole 7.
  • this ski comprises two longitudinal reinforcing elements 8, extending over a length greater than the central part of the ski or skid zone, arranged on either side of the core.
  • Each reinforcing element 8 extends over a large part of the width of a square 6, and serves to support the shell 3, and is not covered laterally by this shell, thus forming the visible edges of the ski.
  • the shell 3 laterally comprises two flanges 9 substantially parallel to the plane of the sole, bearing against two faces of same orientation as the songs 8.
  • the height of the lateral parts 5 of the hull is substantially constant over the length of the ski, while the height of each edge 8 is maximum in the skid zone and decreases respectively towards the front and towards the rear, to become zero in the ends, as shown in Figure 3.
  • a band of viscoelastic material 10 is provided between the hull and the edges.
  • each edge 18 has, in the central part of the ski, a height corresponding substantially to that of the ski, and has a shaped upper surface, serving to support a part inclined side 15 of the shell, having a complementary shape.
  • the core 12 has a rectangular shape, the face of each reinforcing element located in contact with the core being perpendicular to the plane of the sole.
  • FIG. 6 represents another embodiment of this ski, in which the upper face of each edge 28, which is parallel to the plane of the sole, serves to embed an end of an edge 29 of the hull 24.
  • each reinforcing element 38 has lateral faces, respectively external and internal, the latter being in contact with the core 32, inclined relative to the perpendicular to the plane of the sole.
  • the shell laterally comprises two flanges 35 substantially parallel to the plane of the sole, bearing against two faces of the same orientation as the edges 38.
  • FIG. 8 represents a very schematic top view of a ski without shell, according to the invention, in which each reinforcing element 48 has a base of constant width, over the entire length of the ski.
  • each reinforcement element consists of a juxtaposed multimaterial complex, such as a central layer of Zicral 48a and two lateral layers of ABS 48b.
  • FIGS. 9 to 11 show another embodiment of this ski, in which the reinforcing elements 58 forming the edge are only visible in the skid zone (FIG. 9), and are covered by the shell in the front parts and back of the ski ( Figure 11).
  • Each reinforcing element 58 can be made in three parts, namely a central part 58a, a front part 58b and a rear part 58c butted longitudinally. It is important that the central portion 58a is made of a resistant material, the portions 58b and 58c possibly being made, for example, of materials having a good quality of damping, such as a viscoelastic material. It can also be noted that if, in the embodiment shown in FIG. 7, the core 42 has a width which varies along the ski, in which case the reinforcing elements are of constant width, the core 52 of the ski shown in FIG. Figures 9 and 10, may have a constant width, in which case the width of the reinforcing elements is variable throughout the ski.
  • the invention brings a great improvement to the existing technique by providing a ski which combines the aesthetic advantages of hull skis, and the technical advantages of traditional skis, by providing a hull ski comprising edges in the skating area.
  • the invention is not limited to the sole embodiments of this ski described above by way of examples, on the contrary it embraces all the variants included in the subject of the appended claims .
  • the reinforcement elements could only extend in the central part of the ski, or that some of the characteristics, described with reference to an embodiment, could be combined with characteristics described with reference to another embodiment without departing from the scope of the invention.

Abstract

Ski comprising a filling core, for example made from polyurethane foam, a shell forming the upper face and at least a part of the lateral faces of the ski, a lower face equipped with longitudinal metal edges and with a central sliding running sole. <??>According to the invention, this ski comprises two longitudinal reinforcement elements (8) extending at least in the central part of the ski, arranged on either side of the core (2), each reinforcement element including a lower face extending to a large extent over the width of an edge (6) so as to provide it with an effective support, and extending over at least a part of the height of the ski, the reinforcement elements not being covered over laterally by the shell and thus forming the sides of the ski, at least in the central part of the latter. <IMAGE>

Description

La présente invention a pour objet un ski en forme, de section non rectangulaire.The present invention relates to a shaped ski, of non-rectangular section.

Il est de plus en plus fréquent de réaliser des skis en forme, c'est-à-dire des skis de section non rectangulaire possédant une coque formant la face supérieure et les faces latérales du ski, ces faces latérales étant éventuellement inclinées sur au moins une partie de leur hauteur. Dans ce cas, cette inclinaison peut être constante, ou variable sur la longueur du ski, et procurée par des surfaces planes ou courbes.It is more and more frequent to produce shaped skis, that is to say skis of non-rectangular section having a shell forming the upper face and the lateral faces of the ski, these lateral faces possibly being inclined on at least part of their height. In this case, this inclination can be constant, or variable over the length of the ski, and provided by flat or curved surfaces.

Il est également avantageux de réaliser des skis comportant un noyau de remplissage en mousse de matière synthétique, par exemple de polyuréthanne, qui possède d'excellentes propriétés de stabilité dans le temps, et est d'un poids peu élevé.It is also advantageous to produce skis comprising a filling core made of synthetic foam, for example polyurethane, which has excellent properties of stability over time, and is of low weight.

L'avantage d'un ski traditionnel, est notamment qu'il possède des chants rigides, par exemple en ABS, ou en stratifié phénolique, assurant une excellente transmission des efforts exercés par la surface de neige sur les carres du ski, vers la face supérieure de celui-ci équipée de la fixation pour une chaussure du skieur.The advantage of a traditional ski, is in particular that it has rigid edges, for example in ABS, or in phenolic laminate, ensuring an excellent transmission of the forces exerted by the snow surface on the ski edges, towards the face upper of it equipped with the fixation for a shoe of the skier.

Les documents FR 2 611 519 et WO 91/08029 décrivent un ski à coque dont les parois latérales sont inclinées, comportant un noyau de section rectangulaire, et dans lequel la transmission des efforts entre les carres et la face supérieure est réalisée par des éléments de renfort situés au contact des parois inclinées, et formés par exemple par des feuilles de tissu imprégnées de résine. L'espace entre le noyau central et les faces latérales est occupé par un matériau de remplissage.The documents FR 2 611 519 and WO 91/08029 describe a ski with hull whose lateral walls are inclined, comprising a core of rectangular section, and in which the transmission of the forces between the edges and the upper face is carried out by elements of reinforcement located in contact with the inclined walls, and formed for example by sheets of fabric impregnated with resin. The space between the central core and the side faces is occupied by a filling material.

Les documents FR 2 611 518, FR 2 615 404 et EP 0 394 835 concernent des skis en forme, comportant une coque formant les faces latérales inclinées du ski, un noyau de section rectangulaire, des éléments de renfort au contact des parois inclinées, avec ménagement d'un espace entre les parois inclinées et le noyau, qui est rempli par des éléments viscoélastiques possédant un pouvoir d'amortissement des vibrations.Documents FR 2 611 518, FR 2 615 404 and EP 0 394 835 relate to shaped skis, comprising a shell forming the inclined lateral faces of the ski, a core of rectangular section, reinforcing elements in contact with the inclined walls, with provision of a space between the inclined walls and the core, which is filled with viscoelastic elements having a vibration damping power.

L'inconvénient de ces différentes solutions résulte du fait qu'il n'existe pas d'éléments larges assurant une transmission directe des efforts depuis les carres jusqu'à la face supérieure équipée de la fixation puisque le noyau ne prend pas appui sur les carres, et que les éléments de renforcement de la coque sont plaqués contre les flans inclinés de celle-ci et prennent un appui ponctuel sur chaque carre.The disadvantage of these different solutions results from the fact that there are no large elements ensuring a direct transmission of forces from the edges to the upper face equipped with the fixing since the core does not bear on the edges , and that the reinforcing elements of the hull are pressed against the inclined blanks thereof and take a punctual support on each edge.

Il en résulte donc des skis qui possèdent des caractéristiques de comportement moyennes, et qui ne peuvent pas satisfaire aux critères d'exigence requis, notamment en compétition où la précision de guidage souhaitée pour les skis impose une transmission aussi parfaite que possible des efforts depuis les carres vers la face supérieure du ski.This therefore results in skis which have average behavior characteristics, and which cannot meet the required criteria, especially in competition where the desired guidance precision for skis requires as perfect a transmission of forces from the edges towards the upper face of the ski.

Le but de l'invention est de fournir un ski en forme, de section non rectangulaire, comportant un noyau de remplissage, par exemple en mousse de matière synthétique, et notamment de polyuréthanne, dont la face supérieure et au moins une partie des faces latérales soit constituée par une coque, afin de posséder la qualité de finition des skis comportant une coque, tout en offrant les qualités techniques des skis traditionnels en assurant, au moins au niveau du patin, une transmission directe des efforts depuis les carres jusqu'à la face supérieure du ski équipée de la fixation.The object of the invention is to provide a shaped ski, of non-rectangular section, comprising a filling core, for example made of synthetic foam, and in particular of polyurethane, the upper face and at least part of the lateral faces is constituted by a hull, in order to have the quality of finish of the skis comprising a hull, while offering the technical qualities of traditional skis by ensuring, at least at the level of the skate, a direct transmission of the forces from the edges to the upper face of the ski equipped with the binding.

A cet effet, le ski qu'elle concerne, comprend deux éléments de renforcement longitudinaux, s'étendant au moins dans la partie centrale du ski, disposés de part et d'autre du noyau, chaque élément de renforcement comportant une face inférieure s'étendant en grande partie sur la largeur d'une carre de façon à lui procurer un appui efficace, et s'étendant sur au moins une partie de la hauteur du ski, les éléments de renforcement n'étant pas recouverts latéralement par la coque et formant ainsi les chants du ski, au moins dans la partie centrale de celui-ci.To this end, the ski which it concerns comprises two longitudinal reinforcing elements, extending at least in the central part of the ski, arranged on either side of the core, each reinforcing element having a lower face s' extending largely over the width of an edge so as to provide it with effective support, and extending over at least part of the height of the ski, the reinforcing elements not being covered laterally by the shell and forming thus the edges of the ski, at least in the central part of it.

Dans ces conditions, ce ski comporte, au moins dans sa zone de patin, des éléments de renforcement qui forment des chants, et qui assurent une parfaite transmission des efforts depuis les carres jusqu'à la face supérieure du ski équipée de la fixation.Under these conditions, this ski comprises, at least in its skid area, reinforcing elements which form edges, and which ensure perfect transmission of forces from the edges to the upper face of the ski equipped with the binding.

Un tel ski peut être réalisé sous différentes formes.Such a ski can be produced in different forms.

Selon une première forme de réalisation, les éléments de renforcement ne sont présents que dans la partie centrale ou zone de patin du ski, ne sont pas recouverts latéralement par la coque et forment ainsi les chants du ski, tandis que la coque seule forme les parois latérales du ski dans les zones d'extrémité de celui-ci.According to a first embodiment, the reinforcing elements are only present in the central part or skate area of the ski, are not covered laterally by the hull and thus form the edges of the ski, while the hull alone forms the walls side of the ski in the end zones thereof.

Conformément à une seconde forme de réalisation, les éléments de renforcement s'étendent sur une longueur supérieure à la longueur de la partie centrale ou zone de patin du ski, ne sont pas recouverts latéralement par la coque et forment ainsi les chants du ski sur toute leur longueur.According to a second embodiment, the reinforcing elements extend over a length greater than the length of the central part or skate area of the ski, are not covered laterally by the hull and thus form the edges of the ski over all their length.

Conformément à une troisième forme de réalisation, les éléments de renforcement s'étendent sur une longueur supérieure à la longueur de la partie centrale ou zone de patin du ski, ne sont pas recouverts latéralement par la coque et forment les chants du ski dans la zone centrale de celui-ci, et sont recouverts latéralement par la coque dans les zones du ski situées en avant et en arrière de la zone de patin.According to a third embodiment, the reinforcing elements extend over a length greater than the length of the central part or skid area of the ski, are not covered laterally by the shell and form the edges of the ski in the area central of it, and are covered laterally by the hull in the ski areas located in front and behind the skate area.

L'une des faces de chaque élément de renforcement sert, dans la zone de patin, à l'appui d'une carre et sa face opposée sert à l'appui d'un bord de la coque.One of the faces of each reinforcing element serves, in the skate area, to support an edge and its opposite face serves to support an edge of the hull.

A cet effet, la coque peut comporter latéralement deux rebords sensiblement parallèles au plan de la semelle, prenant appui contre deux faces de même orientation que comportent les chants. Au contraire, les chants peuvent eux-mêmes comporter chacun une surface supérieure en forme servant à l'appui d'une partie latérale inclinée de la coque. Il est également possible que la face supérieure de chaque chant serve à l'encastrement de l'un des bords de la coque.To this end, the shell can laterally have two flanges substantially parallel to the plane of the sole, bearing against two faces of the same orientation as the edges. On the contrary, the edges may themselves each have a shaped upper surface serving to support an inclined lateral part of the shell. It is also possible that the upper face of each edge serves to embed one of the edges of the shell.

Conformément à une caractéristique de l'invention, la hauteur des parties latérales de la coque est sensiblement constante sur toute la longueur du ski, tandis que la hauteur de chaque chant est maximale dans la zone de patin et décroît respectivement vers l'avant et vers l'arrière.According to a characteristic of the invention, the height of the lateral parts of the hull is substantially constant over the entire length of the ski, while the height of each edge is maximum in the skid zone and decreases respectively towards the front and towards the back.

En outre, chaque élément de renforcement peut posséder une face, destinée à prendre appui contre le noyau, qui est perpendiculaire au plan de la semelle, ou au contraire inclinée par rapport à cette perpendiculaire. De même, la face extérieure de chaque chant peut être perpendiculaire au plan de la semelle ou inclinée par rapport à cette perpendiculaire.In addition, each reinforcing element may have a face, intended to bear against the core, which is perpendicular to the plane of the sole, or on the contrary inclined relative to this perpendicular. Likewise, the outer face of each edge can be perpendicular to the plane of the sole or inclined relative to this perpendicular.

Chaque élément de renforcement peut posséder une base de largeur constante sur toute la longueur du ski, le noyau possédant alors une largeur variable sur la longueur du ski, ou encore chaque élément de renforcement peut posséder une base de largeur variable, tandis que le noyau possède une largeur constante sur la longueur du ski.Each reinforcement element can have a base of constant width over the entire length of the ski, the core then having a variable width over the length of the ski, or alternatively each reinforcement element can have a base of variable width, while the core has a constant width over the length of the ski.

Chaque élément de renforcement peut être monolithique, et réalisé en une matière synthétique ou en bois, ou encore être réalisé à partir de plusieurs parties aboutées dans le sens longitudinal, ces différentes parties étant réalisées en des matériaux différents.Each reinforcing element can be monolithic, and made of a synthetic material or of wood, or even be made from several parts butted in the longitudinal direction, these different parts being produced from different materials.

Il est important que la partie centrale de chaque élément de renforcement située dans la zone de patin du ski soit rigide, les parties d'extrémités pouvant être réalisées en des matériaux plus souples, tels que des matériaux viscoélastiques possédant de bonnes caractéristiques d'amortissement.It is important that the central part of each reinforcing element located in the ski skid area is rigid, the end parts being able to be made of more flexible materials, such as viscoelastic materials having good damping characteristics.

A titre d'exemple, la partie rigide de chaque élément de renforcement peut être réalisée en un complexe multimatériaux, tel que Zicral-ABS, Zicral étant une marque d'un alliage d'aluminium, et l'ABS étant l'acrylonitrile-butadiène-styrène.By way of example, the rigid part of each reinforcing element can be made of a multimaterial complex, such as Zicral-ABS, Zicral being a mark of an aluminum alloy, and ABS being acrylonitrile-butadiene -styrene.

Selon les caractéristiques de comportement recherchées pour un ski, les deux éléments de renforcement d'un même ski peuvent être identiques ou posséder des caractéristiques différentes de rigidité et d'amortissement, ou également posséder des caractéristiques géométriques différentes, telles que largeur et/ou hauteur.According to the behavioral characteristics sought for a ski, the two reinforcing elements of the same ski can be identical or have different characteristics of rigidity and damping, or also have different geometric characteristics, such as width and / or height .

Selon une autre caractéristique de l'invention, les éléments de renforcement s'étendent sur toute la longueur active du ski, c'est-à-dire sensiblement entre les zones de contact avant et arrière du ski sur la neige.According to another characteristic of the invention, the reinforcing elements extend over the entire active length of the ski, that is to say substantially between the front and rear contact zones of the ski on snow.

Le noyau de remplissage de ce ski peut être réalisé indépendamment puis assemblé aux éléments de renforcement et à la coque, ou encore les éléments de renforcement peuvent tout d'abord être assemblés à la coque, après quoi, le noyau est injecté in situ.The filling core of this ski can be produced independently and then assembled with the reinforcing elements and the hull, or else the reinforcing elements can first of all be assembled with the hull, after which the core is injected in situ.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence aux dessins schématiques annexés représentant, à titre d'exemples non limitatifs, plusieurs formes d'exécution de ce ski :

  • Figure 1 est une vue de côté d'un premier ski ;
  • Figures 2, 3 et 4 sont trois vues en coupe transversale et à échelle agrandie de ce ski selon les lignes II-II, III-III et IV-IV de figure 1 ;
  • Figures 5 à 7 sont trois vues en coupe transversale correspondant à la vue en coupe selon la ligne II-II de figure 1, de trois variantes d'exécution de ce ski ;
  • Figure 8 est une vue de dessus sans coque montrant une possibilité de réalisation des éléments de renforcement ;
  • Figure 9 est une vue de côté d'un autre ski selon l'invention ;
  • Figure 10 est une vue de dessus, sans coque, montrant un mode de réalisation et de positionnement des éléments de renforcement du ski ;
  • Figure 11 est une vue en coupe transversale et à échelle agrandie de ce ski, selon la ligne XI-XI de figure 9.
In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawings showing, by way of nonlimiting examples, several embodiments of this ski:
  • Figure 1 is a side view of a first ski;
  • Figures 2, 3 and 4 are three views in cross section and on an enlarged scale of this ski along lines II-II, III-III and IV-IV of Figure 1;
  • Figures 5 to 7 are three cross-sectional views corresponding to the sectional view along line II-II of Figure 1, of three alternative embodiments of this ski;
  • Figure 8 is a top view without shell showing a possibility of realization of the reinforcing elements;
  • Figure 9 is a side view of another ski according to the invention;
  • Figure 10 is a top view, without shell, showing an embodiment and positioning of the reinforcing elements of the ski;
  • FIG. 11 is a view in cross section and on an enlarged scale of this ski, along the line XI-XI of FIG. 9.

Le ski représenté aux figures 1 à 4 comprend un noyau de remplissage 2 en matière synthétique, par exemple en mousse de polyuréthanne, une coque 3 formant la face supérieure 4 du ski et une partie 5 des faces latérales de celui-ci, des carres inférieures longitudinales 6, et une semelle de glissement 7.The ski shown in FIGS. 1 to 4 comprises a filling core 2 made of synthetic material, for example made of polyurethane foam, a shell 3 forming the upper face 4 of the ski and a part 5 of the side faces thereof, lower edges longitudinal 6, and a sliding sole 7.

Selon la caractéristique essentielle de l'invention, ce ski comprend deux éléments de renforcement longitudinaux 8, s'étendant sur une longueur supérieure à la partie centrale du ski ou zone de patin, disposés de part et d'autre du noyau. Chaque élément de renforcement 8 s'étend sur une grande partie de la largeur d'une carre 6, et sert de support à la coque 3, et n'est pas recouvert latéralement par cette coque, formant ainsi les chants visibles du ski.According to the essential characteristic of the invention, this ski comprises two longitudinal reinforcing elements 8, extending over a length greater than the central part of the ski or skid zone, arranged on either side of the core. Each reinforcing element 8 extends over a large part of the width of a square 6, and serves to support the shell 3, and is not covered laterally by this shell, thus forming the visible edges of the ski.

Dans la forme d'exécution représentée aux figures 1 à 4, la coque 3 comporte latéralement deux rebords 9 sensiblement parallèles au plan de la semelle, prenant appui contre deux faces de même orientation que comportent les chants 8.In the embodiment shown in FIGS. 1 to 4, the shell 3 laterally comprises two flanges 9 substantially parallel to the plane of the sole, bearing against two faces of same orientation as the songs 8.

La hauteur des parties latérales 5 de la coque est sensiblement constante sur la longueur du ski, tandis que la hauteur de chaque chant 8 est maximale dans la zone de patin et décroît respectivement vers l'avant et vers l'arrière, pour devenir nulle dans les extrémités, comme montré à la figure 3.The height of the lateral parts 5 of the hull is substantially constant over the length of the ski, while the height of each edge 8 is maximum in the skid zone and decreases respectively towards the front and towards the rear, to become zero in the ends, as shown in Figure 3.

Dans les zones d'extrémités du ski, il est prévu une bande de matériau viscoélastique 10 entre la coque et les carres.In the end zones of the ski, a band of viscoelastic material 10 is provided between the hull and the edges.

Dans la forme d'exécution représentée à la figure 5, chaque chant 18 possède, dans la partie centrale du ski, une hauteur correspondant sensiblement à celle du ski, et présente une surface supérieure en forme, servant à l'appui d'une partie latérale inclinée 15 de la coque, possédant une forme complémentaire. Dans ce cas, le noyau 12 possède une forme rectangulaire, la face de chaque élément de renforcement située au contact du noyau étant perpendiculaire au plan de la semelle.In the embodiment shown in Figure 5, each edge 18 has, in the central part of the ski, a height corresponding substantially to that of the ski, and has a shaped upper surface, serving to support a part inclined side 15 of the shell, having a complementary shape. In this case, the core 12 has a rectangular shape, the face of each reinforcing element located in contact with the core being perpendicular to the plane of the sole.

La figure 6 représente une autre forme d'exécution de ce ski, dans laquelle la face supérieure de chaque chant 28, qui est parallèle au plan de la semelle, sert à l'encastrement d'une extrémité d'un bord 29 de la coque 24.FIG. 6 represents another embodiment of this ski, in which the upper face of each edge 28, which is parallel to the plane of the sole, serves to embed an end of an edge 29 of the hull 24.

Dans la forme d'exécution représentée à la figure 7, chaque élément de renforcement 38 possède des faces latérales, respectivement extérieure et intérieure, cette dernière étant au contact du noyau 32, inclinées par rapport à la perpendiculaire au plan de la semelle. Comme dans la forme d'exécution représentée à la figure 2, la coque comporte latéralement deux rebords 35 sensiblement parallèles au plan de la semelle, prenant appui contre deux faces de même orientation que comportent les chants 38.In the embodiment shown in FIG. 7, each reinforcing element 38 has lateral faces, respectively external and internal, the latter being in contact with the core 32, inclined relative to the perpendicular to the plane of the sole. As in the embodiment shown in FIG. 2, the shell laterally comprises two flanges 35 substantially parallel to the plane of the sole, bearing against two faces of the same orientation as the edges 38.

La figure 8 représente une vue de dessus très schématique d'un ski sans coque, selon l'invention, dans lequel chaque élément de renforcement 48 possède une base de largeur constante, sur toute la longueur du ski. En outre, chaque élément de renforcement est constitué par un complexe multimatériaux juxtaposés, tel qu'une couche centrale en Zicral 48a et deux couches latérales en ABS 48b.FIG. 8 represents a very schematic top view of a ski without shell, according to the invention, in which each reinforcing element 48 has a base of constant width, over the entire length of the ski. In addition, each reinforcement element consists of a juxtaposed multimaterial complex, such as a central layer of Zicral 48a and two lateral layers of ABS 48b.

Les figures 9 à 11 représentent une autre forme d'exécution de ce ski, dans laquelle les éléments de renforcement 58 formant chant ne sont visibles que dans la zone de patin (figure 9), et sont recouverts par la coque dans les parties avant et arrière du ski (figure 11).FIGS. 9 to 11 show another embodiment of this ski, in which the reinforcing elements 58 forming the edge are only visible in the skid zone (FIG. 9), and are covered by the shell in the front parts and back of the ski (Figure 11).

Chaque élément de renforcement 58 peut être réalisé en trois parties, à savoir une partie centrale 58a, une partie avant 58b et une partie arrière 58c aboutées longitudinalement. Il est important que la partie centrale 58a soit réalisée en un matériau résistant, les parties 58b et 58c pouvant être réalisées par exemple en des matériaux possédant une bonne qualité d'amortissement, tels qu'un matériau viscoélastique. Il peut également être noté que si, dans la forme d'exécution représentée à la figure 7, le noyau 42 possède une largeur qui varie le long du ski auquel cas les éléments de renforcement sont de largeur constante, le noyau 52 du ski représenté aux figures 9 et 10, peut posséder une largeur constante, auquel cas la largeur des éléments de renforcement est variable tout au long du ski.Each reinforcing element 58 can be made in three parts, namely a central part 58a, a front part 58b and a rear part 58c butted longitudinally. It is important that the central portion 58a is made of a resistant material, the portions 58b and 58c possibly being made, for example, of materials having a good quality of damping, such as a viscoelastic material. It can also be noted that if, in the embodiment shown in FIG. 7, the core 42 has a width which varies along the ski, in which case the reinforcing elements are of constant width, the core 52 of the ski shown in FIG. Figures 9 and 10, may have a constant width, in which case the width of the reinforcing elements is variable throughout the ski.

Comme il ressort de ce qui précède, l'invention apporte une grande amélioration à la technique existante en fournissant un ski qui allie les avantages esthétiques des skis à coque, et les avantages techniques des skis traditionnels, en fournissant un ski à coque comportant des chants dans la zone de patin.As is apparent from the above, the invention brings a great improvement to the existing technique by providing a ski which combines the aesthetic advantages of hull skis, and the technical advantages of traditional skis, by providing a hull ski comprising edges in the skating area.

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de ce ski décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes comprises dans l'objet des revendications ci-jointes. C'est ainsi notamment, que les éléments de renforcement ne pourraient s'étendre que dans la seule partie centrale du ski, ou que certaines des caractéristiques, décrites en référence à une forme d'exécution, pourraient être combinées avec des caractéristiques décrites en référence à une autre forme d'exécution sans que l'on sorte pour autant du cadre de l'invention.As is obvious, the invention is not limited to the sole embodiments of this ski described above by way of examples, on the contrary it embraces all the variants included in the subject of the appended claims . Thus, in particular, the reinforcement elements could only extend in the central part of the ski, or that some of the characteristics, described with reference to an embodiment, could be combined with characteristics described with reference to another embodiment without departing from the scope of the invention.

Claims (23)

1. Shaped ski with a non-rectangular cross section, comprising a filling core, for example of polyurethane foam, a shell forming the top face and at least part of the lateral faces of the ski, a bottom face equipped with longitudinal metal edges and a central sliding bottom, characterised in that it comprises two longitudinal reinforcement members (8, 18, 28, 38, 48, 58) extending at least in the central part of the ski or runner area, disposed on each side of the core (2, 12, 32, 42, 52), each reinforcement member having a bottom face extending largely over the width of an edge (6) so as to afford it effective support, and extending over at least part of the height of the ski, the reinforcement elements not being covered laterally by the shell and thus forming the sides of the ski, at least in the central part of the latter.
2. Ski according to Claim 1, characterised in that the reinforcement members (8) are present only in the central part or runner area of the ski, are not covered laterally by the shell (3) and thus form the sides of the ski, whilst the shell alone forms the lateral walls of the ski in the end regions of the latter.
3. Ski according to Claim 1, characterised in that the reinforcement members (8) extend over a length greater than the length of the central part or runner area of the ski, are not covered laterally by the shell (3) and thus form the sides of the ski over their entire length.
4. Ski according to Claim 1, characterised in that the reinforcement members (8) extend over a length greater than the length of the central part or runner area of the ski, are not covered laterally by the shell (3) in the central area of the ski and form the sides of the latter, and are covered laterally by the shell (3) in the areas of the ski situated in front of and behind the runner area.
5. Ski according to any one of Claims 1 to 4, characterised in that, in the central part of the ski, one of the faces of each reinforcement member (8, 18, 28, 38, 48, 58) serves as the support for an edge (6), and its opposite face serves as the support for a side of the shell.
6. Ski according to Claim 3, characterised in that the height of the lateral parts (5) of the shell (3) is substantially constant over the entire length of the ski, whilst the height of each side (8) is at its maximum in the runner area and decreases respectively towards the front and towards the rear.
7. Ski according to either one of Claims 1 and 6, characterised in that the shell (3) has at its sides two flanges (9) substantially parallel to the plane of the bottom (7), bearing against two faces, of the same orientation, on the sides (8).
8. Ski according to any one of Claims 1 to 6, characterised in that each reinforcement member (18) has a height corresponding substantially to that of the ski, and has a shaped surface serving to support an inclined lateral part (15) of the shell.
9. Ski according to any one of Claims 1 to 6, characterised in that the top face of each side (28) is used for embedding one of the edges (29) of the shell.
10. Ski according to any one of Claims 1 to 9, characterised in that each reinforcement member (8, 18, 28) has a face, designed to bear against the core, which is perpendicular to the plane of the bottom (7).
11. Ski according to any one of Claims 1 to 9, characterised in that each reinforcement member (38) has a face, designed to bear against the core, which is inclined with respect to the perpendicular to the plane of the bottom (7).
12. Ski according to any one of Claims 1 to 11, characterised in that each reinforcement member has a base, that is to say a face turned towards the bottom, the width of which is constant over the entire length of the ski, the core (42) for its part having a width which is variable over the entire length of the ski.
13. Ski according to any one of Claims 1 to 11, characterised in that each reinforcement member (58) has a base, that is to say a face turned towards the bottom, the width of which is variable according to its longitudinal position on the ski, whilst the core (52) for its part has a width which is constant over the length of the ski.
14. Ski according to any one of Claims 1 and 3 to 13, characterised in that each reinforcement member (58) is produced in several parts (58a, 58b, 58c) joined end to end in the longitudinal direction, produced from materials having different characteristics.
15. Ski according to any one of Claims 1 to 13, characterised in that each reinforcement member (48) is produced in several juxtaposed parts (48a, 48b), produced from materials having different characteristics.
16. Ski according to any one of Claims 1 and 3 to 15, characterised in that each reinforcement member (58) comprises a rigid central part (58a) situated in the runner area, forming a side, and two end parts produced from a viscoelastic material.
17. Ski according to any one of Claims 1 to 16, characterised in that the rigid part (58a) of each reinforcement member is produced from a multi-material complex, such as Zicral-ABS, Zicral being the brand name for an aluminium alloy, and ABS being acrylonitrile-butadienestyrene.
18. Ski according to any one of Claims 1 to 17, characterised in that the two opposite reinforcement members on the same ski have different stiffness and damping characteristics.
19. Ski according to any one of Claims 1 to 18, characterised in that the two opposite reinforcement members on the same ski have different geometric characteristics, such as different widths and/or heights for the two members.
20. Ski according to either one of Claims 3 and 4, characterised in that the reinforcement members extend over the entire active length of the ski, that is to say substantially between the front and rear contact areas of the ski on the snow.
21. Ski according to any one of Claims 1 to 20, characterised in that a joint made from viscoelastic material is interposed, at least locally, between the shell and the top part of the reinforcement members.
22. Ski according to any one of Claims 1 to 21, characterised in that the core is produced independently, and then connected to the reinforcement members and to the shell.
23. Ski according to any one of Claims 1 to 21, characterised in that the reinforcement members are first of all connected to the shell, after which the core is injected in situ.
EP92420415A 1991-11-19 1992-11-16 Ski with nonrectangular section Expired - Lifetime EP0543743B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9218645U DE9218645U1 (en) 1991-11-19 1992-11-16 Non-rectangular cross-section skis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9114750A FR2683734B1 (en) 1991-11-19 1991-11-19 SKI IN SHAPE, NON-RECTANGULAR SECTION.
FR9114750 1991-11-19

Publications (3)

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EP0543743A1 EP0543743A1 (en) 1993-05-26
EP0543743B1 true EP0543743B1 (en) 1995-03-08
EP0543743B2 EP0543743B2 (en) 2001-07-04

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EP92420415A Expired - Lifetime EP0543743B2 (en) 1991-11-19 1992-11-16 Ski with nonrectangular section

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US (2) US5292148A (en)
EP (1) EP0543743B2 (en)
JP (3) JP2564913Y2 (en)
AT (1) ATE119417T1 (en)
DE (2) DE543743T1 (en)
FR (1) FR2683734B1 (en)

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Also Published As

Publication number Publication date
FR2683734B1 (en) 1994-01-07
DE69201630D1 (en) 1995-04-13
EP0543743A1 (en) 1993-05-26
JP2564913Y2 (en) 1998-03-11
FR2683734A1 (en) 1993-05-21
US5292148A (en) 1994-03-08
JPH11299958A (en) 1999-11-02
EP0543743B2 (en) 2001-07-04
JPH1078U (en) 1998-03-31
DE69201630T2 (en) 1995-07-06
DE543743T1 (en) 1994-12-22
DE69201630T3 (en) 2001-11-08
USRE36586E (en) 2000-02-29
ATE119417T1 (en) 1995-03-15
JPH0558176U (en) 1993-08-03

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