EP0691144A1 - Ski or the like - Google Patents
Ski or the like Download PDFInfo
- Publication number
- EP0691144A1 EP0691144A1 EP95420179A EP95420179A EP0691144A1 EP 0691144 A1 EP0691144 A1 EP 0691144A1 EP 95420179 A EP95420179 A EP 95420179A EP 95420179 A EP95420179 A EP 95420179A EP 0691144 A1 EP0691144 A1 EP 0691144A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ski
- sole
- ribs
- longitudinal
- rods
- 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.)
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- 239000000463 material Substances 0.000 claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 3
- 239000004705 High-molecular-weight polyethylene Substances 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- -1 polyethylene Polymers 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 229920001903 high density polyethylene Polymers 0.000 abstract description 2
- 239000004700 high-density polyethylene Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000012815 thermoplastic material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004836 empirical method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the present invention relates to a ski or the like, that is to say in particular an alpine ski, a cross-country ski, a surfboard or the like.
- one or more rods or longitudinal reinforcements are placed in this interior space, before injection of the filling material.
- the sole is traditionally made of a high density polyolefin, in particular polyethylene. By its nature, this material hardly adheres to the filling material, which makes it necessary to provide a large contact surface between the soleplate and the filling material. In order not to limit this surface, the reinforcements are placed at a distance from the sole and therefore near the neutral fiber of the ski.
- the wooden body gives good longitudinal rigidity to the ski, but considerably weighs it down.
- French Patent No. 786,082 from 1935, describes a sliding plate comprising several grooves parallel to the axis of the ski, bordered by beads. These beads premoit, due to the reduction in the width of the ski in its middle part, to give rise to sharp edges, oriented downwards. These parallel grooves also have the drawback of limiting the sliding capacities of the ski.
- the present invention aims to remedy all of these drawbacks by providing a ski having improved performance compared to traditionally manufactured skis, and by providing a particularly simple and easy to implement method.
- the ski to which it relates comprises, in a manner known per se, a sliding sole assembled with one or more other longitudinal structural elements, the sole being provided with parallel assembly ribs. projecting from its face opposite to that intended to come into contact with snow.
- these ribs are shaped so as to penetrate widely into the interior of the ski, and to delimit between them deep longitudinal spaces undercut, capable of being invaded by the material of one or more longitudinal elements. of structure and / or by the plastic material filling the space delimited by this sole and by these longitudinal structural elements.
- the ribs and the creep of the materials in the aforementioned spaces make it possible to achieve, in a simple and rapid manner, a perfect assembly of the structural elements of the ski, which can resist over time the significant and repeated stresses which the ski undergoes.
- the connection between the longitudinal structural elements is optimally ensured by the large contact surface between the material of the longitudinal structural elements, and / or the material filling the interior space of the ski, on the one hand, and the ribs as well as the sole, on the other hand.
- this ski is greatly simplified, and makes it possible to dispense with traditional assemblies, in particular by gluing, delicate to produce and having a resistance in time relatively uncertain.
- the ribs make it possible to reinforce the ski longitudinally, and therefore to limit the weight of the rods or longitudinal reinforcements which it is necessary to place in the interior space of the ski.
- the height and the spacing of the ribs are greater than the dimensions of the longitudinal reinforcing rods or reinforcements, so that at least part of these rods or reinforcements can be inserted between the ribs.
- rods or frames are thus nested with the sole, and not placed at a distance therefrom as according to the prior art. They are therefore distant from the neutral fiber of the ski and may have, for equal reinforcement, smaller sections than the rods or frames reinforcing the traditional skis, or may provide a reinforcement greater in section equal to that of the traditional rods or frames.
- the sole also has a rigidity which is greater at the level of the ribs than between the ribs.
- the support of the ski on the snow tends to slightly deform the sole between the ribs, towards the inside of the ski, and therefore to create slight concave longitudinal grooves.
- the sole therefore has, in use, a lower surface of slightly wavy shape, seen in a transverse plane.
- Such a surface turns out to confer excellent sliding capacities on the ski, without affecting the guide thereof and without braking it, and avoids providing a conventional longitudinal groove.
- the sliding sole can be produced by any suitable method, for example by molding or machining.
- the sole is advantageously produced by injection or extrusion. These methods make it possible to obtain this sole in a particularly simple, rapid and inexpensive manner.
- the material used to make the sole is thermoplastic and undergoes a slight shrinkage during its cooling. This withdrawal takes place in a differentiated way to the right ribs and the right of spaces between the ribs, taking into account the difference in thickness, which naturally creates, without any particular machining or molding being necessary, a slightly wavy profile of the underside of the sole.
- This material is preferably a high molecular weight polyethylene, or an alloy mainly comprising high and ultra high molecular weight polyethylenes.
- longitudinal grooves are advantageously provided in the sole by machining, then a creep or a cold or hot deformation of the tops of the delimited ribs by these grooves is made to form the undercut parts.
- FIG. 1 represents a ski 1 or similar, that is to say in particular an alpine ski, a cross-country ski, a surfboard or the like.
- This ski comprises a thermoformed shell 2, constituting the upper wall and the side walls, a sliding sole 3 made of high density polyethylene, side edges 4, a bundle of reinforcements or metal rods 5 for reinforcement and a filling material. 6.
- the sole 3 is provided with parallel ribs 7, projecting from its face opposite to that intended to come into contact with the snow.
- These ribs 7 penetrate widely into the interior of the ski, have a T-shaped cross section and have a height and a center distance greater than the dimensions of the rods or lower frames 5.
- the ribs 7 and the flow of the material 6 in the aforementioned spaces make it possible to achieve, in a simple and rapid manner, a perfect assembly of the structural elements 2,3,4,5, being able to resist over time the significant and repeated stresses which the ski.
- the connection between these structural elements is optimally ensured by the large contact surface between the material 6 and the ribs 7 as well as the sole 3.
- ribs 7 also make it possible to reinforce the ski 1 longitudinally, and therefore to limit the weight of the rods or frames 5 which it is necessary to place in the interior space delimited by the shell 2 and by the sole 3, in order to obtain adequate rigidity.
- rods or frames 5 are nested with the sole 3. They are therefore distant from the neutral fiber of the ski 1 and may have, with equal reinforcement of the ski 1, smaller sections than the rods or frames reinforcing the traditional skis, or may provide greater reinforcement with a section equal to that of traditional rods or reinforcement.
- the ribs 7 participate in maintaining these rods or reinforcements 5 during the creep of the material 6.
- the sole 3 is produced by injection or extrusion of a thermoplastic material undergoing a slight shrinkage during its cooling.
- FIG. 3 represents an alternative embodiment of the invention, in which the shell 2 is of tubular structure, and the underside of the latter is molded on the ribs 7.
- the shell 2 can be full, and itself come to fill the entire interior space of the ski, replacing the material 6.
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Description
La présente invention concerne un ski ou similaire, c'est-à-dire notamment un ski alpin, un ski de fond, une planche de surf ou autres.The present invention relates to a ski or the like, that is to say in particular an alpine ski, a cross-country ski, a surfboard or the like.
Il est connu de réaliser des skis par assemblage d'une semelle de glissement avec un ou plusieurs autres éléments longitudinaux de structure, l'espace délimité intérieurement par cette semelle et par ces autres éléments recevant un matériau plastique de remplissage qui vient, après durcissement, réaliser l'assemblage.It is known to make skis by assembling a sliding sole with one or more other longitudinal structural elements, the space internally delimited by this sole and by these other elements receiving a plastic filling material which comes, after hardening, carry out the assembly.
La plupart du temps, une ou plusieurs tiges ou armatures longitudinales sont mises en place dans cet espace intérieur, avant injection du matériau de remplissage.Most of the time, one or more rods or longitudinal reinforcements are placed in this interior space, before injection of the filling material.
La semelle est traditionnellement réalisée en une polyoléfine à haute densité, notamment en polyéthylène. De par sa nature, ce matériau adhère difficilement au matériau de remplissage, ce qui oblige à prévoir une surface de contact importante entre la semelle et le matériau de remplissage. Pour ne pas limiter cette surface, les armatures de renfort sont disposées à distance de la semelle et donc près de la fibre neutre du ski.The sole is traditionally made of a high density polyolefin, in particular polyethylene. By its nature, this material hardly adheres to the filling material, which makes it necessary to provide a large contact surface between the soleplate and the filling material. In order not to limit this surface, the reinforcements are placed at a distance from the sole and therefore near the neutral fiber of the ski.
Il en résulte la nécessité de prévoir des armatures relativement importantes pour assurer une rigidité adéquate au ski. Ce dernier présente par conséquent l'inconvénient d'être lourd compte tenu, notamment, du poids important de ses armatures de renforcement.This results in the need to provide relatively large frames to ensure adequate rigidity to the ski. The latter therefore has the disadvantage of being heavy given, in particular, the significant weight of its reinforcements.
Ce procédé classique est en outre relativement complexe et délicat à mettre en oeuvre.This conventional process is also relatively complex and delicate to implement.
Il est également connu, par le brevet français n° 782 713 de 1934 et le brevet suisse n° 260 334 de 1947, d'assembler un corps de ski en bois à une semelle de glissement en matière synthétique. La semelle peut notamment comprendre de petites nervures en queue d'aronde, qui sont enchâssées dans des rainures correspondantes du corps en bois alors que le matériau de la semelle est à l'état plastique.It is also known, by French patent n ° 782,713 of 1934 and Swiss patent n ° 260,334 of 1947, to assemble a wooden ski body to a sliding sole made of synthetic material. The sole may in particular include small dovetail ribs, which are embedded in grooves of the wooden body while the sole material is in a plastic state.
Ces procédés, anciens et empiriques, n'assurent pas une bonne liaison entre le corps du ski et la semelle, étant donné les faibles surfaces de contact entre les nervures en queue d'arronde et le corps du ski, et le mauvais remplissage des rainures par les nervures. De plus, ces procédés sont quasi impossibles à mettre en oeuvre industriellement.These old and empirical methods do not provide a good connection between the ski body and the sole, given the small contact surfaces between the dovetail ribs and the ski body, and the poor filling of the grooves. by the ribs. In addition, these methods are almost impossible to implement industrially.
Le corps en bois donne une bonne rigidité longitudinale au ski, mais alourdit considérablement ce dernier.The wooden body gives good longitudinal rigidity to the ski, but considerably weighs it down.
Il est par ailleurs connu d'aménager une rainure médiane longitudinale dans la face inférieure de la semelle de glissement d'un ski, afin de favoriser le guidage du ski sur la neige. Une telle rainure présente l'inconvénient de venir limiter les capacités de glisse du ski.It is also known to arrange a longitudinal central groove in the underside of the sliding sole of a ski, in order to favor the guiding of the ski on the snow. Such a groove has the drawback of limiting the sliding capacity of the ski.
Le brevet français n° 786 082, de 1935, décrit une plaque de glissement comportant plusieurs gorges parallèles à l'axe du ski, bordées par des bourrelets. Ces bourrelets premettent, du fait de la réduction de la largeur du ski dans sa partie médiane, de donner naissance à des bords vifs, orientés vers le bas. Ces gorges parallèles présentent également l'inconvénient de limiter les capacités de glisse du ski.French Patent No. 786,082, from 1935, describes a sliding plate comprising several grooves parallel to the axis of the ski, bordered by beads. These beads premoit, due to the reduction in the width of the ski in its middle part, to give rise to sharp edges, oriented downwards. These parallel grooves also have the drawback of limiting the sliding capacities of the ski.
La présente invention vise à remédier à l'ensemble de ces inconvénients, en fournissant un ski ayant des performances améliorées par rapport aux skis fabriqués traditionnellement, et en fournissant un procédé particulièrement simple et facile à mettre en oeuvre.The present invention aims to remedy all of these drawbacks by providing a ski having improved performance compared to traditionally manufactured skis, and by providing a particularly simple and easy to implement method.
Le ski qu'elle concerne comprend, de manière connue en soi, une semelle de glissement assemblée avec un ou plusieurs autres éléments longitudinaux de structure, la semelle étant munie de nervures parallèles d'assemblage faisant saillie de sa face opposée à celle destinée à venir au contact de la neige.The ski to which it relates comprises, in a manner known per se, a sliding sole assembled with one or more other longitudinal structural elements, the sole being provided with parallel assembly ribs. projecting from its face opposite to that intended to come into contact with snow.
Selon l'invention, ces nervures sont conformées de manière à pénétrer largement dans l'intérieur du ski, et à délimiter entre elles des espaces longitudinaux profonds en contre-dépouille, susceptibles d'être envahis par le matériau d'un ou plusieurs éléments longitudinaux de structure et/ou par le matériau plastique venant remplir l'espace délimité par cette semelle et par ces éléments longitudinaux de structure.According to the invention, these ribs are shaped so as to penetrate widely into the interior of the ski, and to delimit between them deep longitudinal spaces undercut, capable of being invaded by the material of one or more longitudinal elements. of structure and / or by the plastic material filling the space delimited by this sole and by these longitudinal structural elements.
Les nervures et le fluage des matériaux dans les espaces précités permettent de réaliser, de manière simple et rapide, un parfait assemblage des éléments structurels du ski, pouvant résister dans le temps aux contraintes importantes et répétées que subit le ski. La liaison entre les éléments structurels longitudinaux est assurée de manière optimale par l'importante surface de contact entre le matériau des éléments structurels longitudinaux, et/ou le matériau remplissant l'espace intérieur du ski, d'une part, et les nervures ainsi que la semelle, d'autre part.The ribs and the creep of the materials in the aforementioned spaces make it possible to achieve, in a simple and rapid manner, a perfect assembly of the structural elements of the ski, which can resist over time the significant and repeated stresses which the ski undergoes. The connection between the longitudinal structural elements is optimally ensured by the large contact surface between the material of the longitudinal structural elements, and / or the material filling the interior space of the ski, on the one hand, and the ribs as well as the sole, on the other hand.
La fabrication de ce ski est grandement simplifiée, et permet de s'affranchir des assemblages traditionnels, notamment par collage, délicats à réaliser et présentant une résistance dans le temps relativement incertaine.The manufacture of this ski is greatly simplified, and makes it possible to dispense with traditional assemblies, in particular by gluing, delicate to produce and having a resistance in time relatively uncertain.
En outre, les nervures permettent de renforcer longitudinalement le ski, et donc de limiter le poids des tiges ou armatures longitudinales qu'il est nécessaire de placer dans l'espace intérieur du ski.In addition, the ribs make it possible to reinforce the ski longitudinally, and therefore to limit the weight of the rods or longitudinal reinforcements which it is necessary to place in the interior space of the ski.
De préférence, la hauteur et l'entraxe des nervures sont supérieurs aux dimensions des tiges ou armatures longitudinales de renforcement, de sorte qu'au moins une partie de ces tiges ou armatures peut être insérée entre les nervures.Preferably, the height and the spacing of the ribs are greater than the dimensions of the longitudinal reinforcing rods or reinforcements, so that at least part of these rods or reinforcements can be inserted between the ribs.
Ces tiges ou armatures sont ainsi imbriquées avec la semelle, et non placées à distance de celle-ci comme selon la technique antérieure. Elles se trouvent donc éloignées de la fibre neutre du ski et peuvent avoir, à renforcement égal, des sections moindres que les tiges ou armatures renforçant les skis traditionnels, ou peuvent procurer un renforcement supérieur à section égale à celle des tiges ou armatures traditionnelles.These rods or frames are thus nested with the sole, and not placed at a distance therefrom as according to the prior art. They are therefore distant from the neutral fiber of the ski and may have, for equal reinforcement, smaller sections than the rods or frames reinforcing the traditional skis, or may provide a reinforcement greater in section equal to that of the traditional rods or frames.
En outre, les nervures que comprend la semelle participent au maintien de ces tiges ou armatures lors du fluage du matériau du ou des éléments longitudinaux de structure et/ou du matériau plastique venant remplir l'espace délimité par cette semelle et ces éléments.In addition, the ribs that the sole includes participate in the maintenance of these rods or reinforcements during the creep of the material of the longitudinal structural element (s) and / or of the plastic material filling the space delimited by this sole and these elements.
La semelle a par ailleurs une rigidité qui est plus importante au droit des nervures qu'entre les nervures.The sole also has a rigidity which is greater at the level of the ribs than between the ribs.
L'appui du ski sur la neige tend à déformer légèrement la semelle entre les nervures, vers l'intérieur du ski, et donc à créer de légères rainures longitudinales concaves. La semelle présente par conséquent, en cours d'utilisation, une surface inférieure de forme légèrement ondulée, vue dans un plan transversal.The support of the ski on the snow tends to slightly deform the sole between the ribs, towards the inside of the ski, and therefore to create slight concave longitudinal grooves. The sole therefore has, in use, a lower surface of slightly wavy shape, seen in a transverse plane.
Une telle surface s'avère conférer d'excellentes capacités de glisse au ski, sans affecter le guidage de celui-ci et sans le freiner, et évite d'aménager une rainure longitudinale classique.Such a surface turns out to confer excellent sliding capacities on the ski, without affecting the guide thereof and without braking it, and avoids providing a conventional longitudinal groove.
La semelle de glissement peut être réalisée par tout procédé approprié, par exemple par moulage ou usinage.The sliding sole can be produced by any suitable method, for example by molding or machining.
Lorsque sa matière constitutive le permet, la semelle est avantageusement réalisée par injection ou extrusion. Ces procédés permettent d'obtenir cette semelle de manière particulièrement simple, rapide et peu onéreuse.When its constituent material allows it, the sole is advantageously produced by injection or extrusion. These methods make it possible to obtain this sole in a particularly simple, rapid and inexpensive manner.
De préférence, le matériau utilisé pour réaliser la semelle est thermoplastique et subit un léger retrait au cours de son refroidissement. Ce retrait s'opère de manière différenciée au droit des nervures et au droit des espaces situés entre les nervures, compte tenu de la différence d'épaisseur, ce qui crée naturellement, sans qu'un usinage ou un moulage particulier ne soit nécessaire, un profil légèrement ondulé de la face inférieure de la semelle. Ce matériau est de préférence un polyéthylène à haut poids moléculaire, ou un alliage comportant majoritairement des polyéthylènes à haut et à ultra haut poids moléculaire.Preferably, the material used to make the sole is thermoplastic and undergoes a slight shrinkage during its cooling. This withdrawal takes place in a differentiated way to the right ribs and the right of spaces between the ribs, taking into account the difference in thickness, which naturally creates, without any particular machining or molding being necessary, a slightly wavy profile of the underside of the sole. This material is preferably a high molecular weight polyethylene, or an alloy mainly comprising high and ultra high molecular weight polyethylenes.
Dans le cas d'une semelle de glissement réalisée par frittage d'un polyéthylène à ultra haut poids moléculaire, des rainures longitudinales sont avantageusement aménagées dans la semelle par usinage, puis un fluage ou une déformation à froid ou à chaud des sommets des nervures délimitées par ces rainures est réalisé pour constituer les parties en contre-dépouille.In the case of a sliding sole produced by sintering an ultra high molecular weight polyethylene, longitudinal grooves are advantageously provided in the sole by machining, then a creep or a cold or hot deformation of the tops of the delimited ribs by these grooves is made to form the undercut parts.
Pour sa bonne compréhension, l'invention est à nouveau décrite ci-dessous, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme préférée de réalisation du ski ou similaire qu'elle concerne.
- La figure 1 en est une vue en coupe transversale et en élévation ;
- la figure 2 est une vue d'un détail, à échelle agrandie et
- la figure 3 en est une vue en coupe transversale et en élévation, selon une variante.
- Figure 1 is a cross-sectional view in elevation;
- FIG. 2 is a view of a detail, on an enlarged scale and
- Figure 3 is a cross-sectional view in elevation, according to a variant.
La figure 1 représente un ski 1 ou similaire, c'est-à-dire notamment un ski alpin, un ski de fond, une planche de surf ou autres.FIG. 1 represents a ski 1 or similar, that is to say in particular an alpine ski, a cross-country ski, a surfboard or the like.
Ce ski comprend une coque thermoformée 2, constituant la paroi supérieure et les parois latérales, une semelle de glissement 3 en polyéthylène à haute densité, des carres latérales 4, un faisceau d'armatures ou de tiges métalliques 5 de renforcement et un matériau de remplissage 6.This ski comprises a
La semelle 3 est munie de nervures parallèles 7, faisant saillie de sa face opposée à celle destinée à venir en contact avec la neige.The sole 3 is provided with
Ces nervures 7 pénètrent largement dans l'intérieur du ski, présentent une section transversale en forme de T et ont une hauteur et un entraxe supérieurs aux dimensions des tiges ou armatures 5 inférieures.These
Elles délimitent, par conséquent, entre elles des espaces longitudinaux profonds et en contre-dépouille, dans lesquels peuvent être engagées les tiges ou armatures 5 inférieures et qui sont susceptibles d'être envahis par le matériau de remplissage 6, lors de l'injection de ce dernier à l'état plastique.They therefore delimit between them deep longitudinal spaces and undercut, in which the lower rods or
Les nervures 7 et le fluage du matériau 6 dans les espaces précités permettent de réaliser, de manière simple et rapide, un parfait assemblage des éléments structurels 2,3,4,5, pouvant résister dans le temps aux contraintes importantes et répétées que subit le ski. La liaison entre ces éléments structurels est assurée de manière optimale par l'importante surface de contact entre le matériau 6 et les nervures 7 ainsi que la semelle 3.The
Ces nervures 7 permettent en outre de renforcer longitudinalement le ski 1, et donc de limiter le poids des tiges ou armatures 5 qu'il est nécessaire de placer dans l'espace intérieur délimité par la coque 2 et par la semelle 3, afin d'obtenir la rigidité adéquate.These
Ces tiges ou armatures 5 sont imbriquées avec la semelle 3. Elles se trouvent donc éloignées de la fibre neutre du ski 1 et peuvent avoir, à renforcement égal du ski 1, des sections moindres que les tiges ou armatures renforçant les skis traditionnels, ou peuvent procurer un renforcement supérieur à section égale à celle des tiges ou armatures traditionnelles.These rods or
De plus, les nervures 7 participent au maintien de ces tiges ou armatures 5 lors du fluage du matériau 6.In addition, the
La semelle 3 est réalisée par injection ou extrusion d'un matériau thermoplastique subissant un léger retrait au cours de son refroidissement.The sole 3 is produced by injection or extrusion of a thermoplastic material undergoing a slight shrinkage during its cooling.
Ce retrait s'opère de manière différenciée au droit des nervures 7 et au droit des espaces situés entre les nervures 7, compte tenu de la différence d'épaisseur du matériau. Comme le montre plus particulièrement la figure 2, la surface inférieure de la semelle 3 présente alors naturellement un profil légèrement ondulé en section transversale, alternant des concavités longitudinales 9 et des surfaces planes 10. Un tel profil s'avère conférer d'excellentes capacités de glisse au ski 1, sans affecter le guidage de celui-ci et sans le freiner, et évite d'aménager une rainure longitudinale classique.This removal takes place in a differentiated manner to the right of the
La figure 3 représente une variante de réalisation de l'invention, dans laquelle la coque 2 est à structure tubulaire, et la face inférieure de celle-ci est moulée sur les nervures 7.FIG. 3 represents an alternative embodiment of the invention, in which the
Il va de soi que l'invention n'est pas limitée aux formes de réalisation décrites ci-dessus à titre d'exemples mais qu'elle en embrasse au contraire toutes les variantes. Ainsi, la coque 2 peut être pleine, et venir elle-même remplir tout l'espace intérieur du ski, en remplacement du matériau 6.It goes without saying that the invention is not limited to the embodiments described above by way of examples, but on the contrary embraces all variants thereof. Thus, the
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9408588A FR2722107B1 (en) | 1994-07-06 | 1994-07-06 | SKI OR SIMILAR |
| FR9408588 | 1994-07-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0691144A1 true EP0691144A1 (en) | 1996-01-10 |
| EP0691144B1 EP0691144B1 (en) | 1998-02-25 |
Family
ID=9465263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95420179A Expired - Lifetime EP0691144B1 (en) | 1994-07-06 | 1995-06-30 | Ski or the like |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0691144B1 (en) |
| AT (1) | ATE163361T1 (en) |
| DE (1) | DE69501643D1 (en) |
| FR (1) | FR2722107B1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR782713A (en) | 1933-12-14 | 1935-06-11 | Ski with cover piece | |
| FR786082A (en) | 1934-02-24 | 1935-08-26 | Lightweight Metal Slip Plate Ski | |
| CH260334A (en) | 1947-11-28 | 1949-03-15 | Frei Willi | Ski with a tread and process for making the same. |
| US3894745A (en) * | 1971-05-14 | 1975-07-15 | Hoechst Ag | Ski body made of plastics |
| US4115506A (en) * | 1976-12-17 | 1978-09-19 | Nissei Plastics Industrial Co., Ltd. | Method for producing injection molded ski |
| EP0309403A2 (en) * | 1987-09-25 | 1989-03-29 | Atomic Skifabrik Alois Rohrmoser | Method for producing a ski, and ski obtained by this method |
-
1994
- 1994-07-06 FR FR9408588A patent/FR2722107B1/en not_active Expired - Fee Related
-
1995
- 1995-06-30 AT AT95420179T patent/ATE163361T1/en not_active IP Right Cessation
- 1995-06-30 EP EP95420179A patent/EP0691144B1/en not_active Expired - Lifetime
- 1995-06-30 DE DE69501643T patent/DE69501643D1/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR782713A (en) | 1933-12-14 | 1935-06-11 | Ski with cover piece | |
| FR786082A (en) | 1934-02-24 | 1935-08-26 | Lightweight Metal Slip Plate Ski | |
| CH260334A (en) | 1947-11-28 | 1949-03-15 | Frei Willi | Ski with a tread and process for making the same. |
| US3894745A (en) * | 1971-05-14 | 1975-07-15 | Hoechst Ag | Ski body made of plastics |
| US4115506A (en) * | 1976-12-17 | 1978-09-19 | Nissei Plastics Industrial Co., Ltd. | Method for producing injection molded ski |
| EP0309403A2 (en) * | 1987-09-25 | 1989-03-29 | Atomic Skifabrik Alois Rohrmoser | Method for producing a ski, and ski obtained by this method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2722107A1 (en) | 1996-01-12 |
| ATE163361T1 (en) | 1998-03-15 |
| DE69501643D1 (en) | 1998-04-02 |
| EP0691144B1 (en) | 1998-02-25 |
| FR2722107B1 (en) | 1996-10-04 |
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