EP0665034B1 - Ski à noyau injecté "In situ" - Google Patents
Ski à noyau injecté "In situ" Download PDFInfo
- Publication number
- EP0665034B1 EP0665034B1 EP95420001A EP95420001A EP0665034B1 EP 0665034 B1 EP0665034 B1 EP 0665034B1 EP 95420001 A EP95420001 A EP 95420001A EP 95420001 A EP95420001 A EP 95420001A EP 0665034 B1 EP0665034 B1 EP 0665034B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ski
- board
- plate
- over snow
- gliding over
- 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
Links
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
- A63C5/052—Structure of the surface thereof of the tips or rear ends
Definitions
- the present invention relates to a ski, or other snow gliding board, the core of which is made "in situ", either by a technique of pouring a thermoplastic product or non-cellular thermosetting, either by a technique injection of the components of a foam of a product synthetic.
- the synthetic product in question is most of the time a polyurethane foam.
- we inject spatula level or heel level the compounds of this foam in the mold, and it is these compounds that, in reacting with each other, form this foam inside the mold.
- Synthetic foam then fills the entire cavity internal of the ski to form a core.
- the rear end of the ski is blocked by a tip called “heel piece”, and this cavity internal extends between the heel piece and the front end of the spatula, this front end can either be truncated to then receive an attached spatula tip, or not be truncated and therefore ending in a point to constitute the front end of the ski.
- the core of the ski therefore extends over substantially all of the length of the ski, heel piece and any tip tip reported not included, unlike most skis more traditional, non-injected sandwich structure, for which the core, which is then produced and machined before the operation of mold ski manufacturing, stops at the lines of front and rear contact of the ski, i.e. respectively at the birth of the tip and the birth of the heel.
- nucleus In a ski whose core is made "in situ", the tip and heel being relatively thin areas, the portion of nucleus which occupies the internal part of the spatula and of the heel is relatively thin. It follows that this nucleus is practically in the tip and in the heel constituted by the superposition of the two "layers of skin” upper and lower nucleus.
- any piece of foam rigid plastic obtained by an injection process is, after hardening, surrounded on all sides by a thin layer of higher density than that prevailing in the heart of the room.
- This layer which is called “skin layer”
- skin layer is more brittle. It is normally removed by machining in the case of cores intended for the traditional “sandwich” process of manufacturing skis, but it necessarily remains inside the ski in the case of manufacture thereof by the process "in situ" injection.
- the tip and the heel of the skis injected are particularly brittle elements, which is very annoying especially for the spatula which is an element whose overhang is very important.
- the core of a ski constrained in bending under the effect of a load generates compression stresses on its upper part and tensile stresses on its part lower.
- a median surface called neutral fiber represents the zone where the stresses are zero but where the shear is maximum.
- She is relates to a ski, or other board of gliding on snow, comprising an outer casing which at least comprises a lower slip sole and upper material plastic, the core or core of this ski being produced by a "in situ" injection process extending from the tip rear at the front end, heel piece and any toe cap reported spatula not included. It is planned, inside the structure that defines the spatula and close to the fiber ski neutral, at least one longitudinal strip of material having shear elasticity properties, means being provided to maintain, during the operation core injection, said longitudinal strip substantially at level of said neutral fiber.
- this longitudinal strip is worn by a semi-rigid plate, such as a metal plate, the latter being preferably covered with a strip elastic on both sides.
- said material is a viscoelastic material, which allows it, by shearing effect, to have an effective vibration damping function due to the pendulum effect of the spatula.
- ski 1 of the so-called "shell injected” type, and therefore having a core 2 of injected polyurethane foam which extends from the front end 3 of the spatula 4 to the rear end 21 of the heel 22, added heel piece 23 no included, the top and the edges of this ski being formed by a shell 5 made from a plastic sheet.
- the added heel piece 23 is an element independent of the core of ski 1 and positioned at the rear of this latest. In fact it can be brought back after demolding, or well positioned in the mold before the injection operation. The nucleus therefore stops at transverse line 21 as above mentionned.
- front end of the spatula this is the end of the spatula 4 which forms integral part of the body and therefore of the core of the ski 1. It does not obviously does not understand the possible (absent in this case of figure) tip of a spatula that is sometimes brought back on the end, then truncated accordingly, of the spatula 4.
- an upper reinforcement 6 formed by a textile sheet is glued under the upper face of the shell 5, while a lower reinforcement 7 consisting of a metal strip openwork is placed on the sliding sole 8 of the ski, it even bordered by the edges 16.
- This metal reinforcement 7 is drowned in Polyurethane and, for this, it has a certain number of stamps 9 which hold it, before the operation injection, at a sufficient distance from the sole 8.
- a metal plate 10 for example of alloy aluminum, completely embedded in Polyurethane and covered with an elastic band or layer 11,12 on each of its two faces (upper and lower), is positioned in the structure of the spatula 4 along the neutral fiber 13 of the ski.
- the elastic layers 11 and 12 are made of any material elastic: rubber or elastomer for example. It is however advantageous to provide them in visco-elastic material, which also gives the tip 4 of the ski properties damping of the vibratory wave which tends to take birth during pendulum oscillations of this spatula during skiing.
- the plate 10 is arched to match the camber of the spatula. It marries, at the front, the pointed shape of this last and at the back, it does not connect so abrupt with the internal structure of the ski that constitutes essentially the core 2, but gradually according to two pointed fins 14,15 ( Figure 4)
- This plate 10 is held in position, in the injection mold, on the one hand thanks to stampings or bosses lower 24 by which it rests on the reinforcing plate 7 and is kept at a distance therefrom to allow the easy passage of the injection foam, and on the other hand thanks to upper bosses 25 by which it is pressed against the upper reinforcement 6 and kept at a distance therefrom.
- the layers 10, 11, 28 are deposited all three in the same vulcanization operation of the same visco-elastic material, and they are the same thickness.
- the layer 28 allows the wafer 10 to work in shearing without being prevented by the material of the core 2 passing through orifice 26.
- the plate 10 can work at shear over almost the entire width of the core 2, and, as shown clearly in Figure 2, it extends consequence over practically the entire width of this core 2, so as not to allow subsistence, on either side respectively, that a width "e" of filling material 2 which is not greater than about 2 mm.
- this injected ski is also provided, at the heel, of another bi-rubberized metal plate 17 which, at like the front plate 10, is positioned at the neutral fiber 13, and which is provided with bosses 18 for holding in position.
- the longitudinal connection of the plate 17 with the internal structure 2 of the ski is not carried out not abruptly, but gradually.
- the front edge 19 of the plate 17 has a point shape, while its edge rear 20 follows the shape of the heel of the ski.
- the length of these plates 10,17 corresponds approximately the cantilever lengths of the spatula and heel, that is to say between 220 and 300 mm respectively for the tip and between 30 and 80 mm for the heel.
- the thicknesses of elastic layers 11 or 12 can vary from 0.05 to 2 mm.
- Platelets 10.17 could only be coated with elastic product on one side. In this case, the elastic layer must be located in the immediate vicinity of the neutral fiber.
- the elastic layers 11,12 could each be composed of several superimposed elastic layers and of different natures or characteristics, as well that possibly of different thicknesses. They could be deposited by bonding, not by vulcanization. Instead of to be metallic, the plates 10,17 could be in one other semi-rigid material, for example "ABS" or other plastic of the same kind.
- a support plate is interesting, because it increases the solidity in the heel and in the tip, but it is by no means obligatory, and one could simply foresee, in spatula and / or in the heel, to position, according to Figure 6, a strip 32 of elastic material, of the same shape for example as plates 10 and 17 and also provided with orifice 26, according to neutral fiber 13.
- the positioning of this strip elastic could be done for example, as illustrated in FIG. 6, by means of bracing studs or cords 33, constituted by a pasty glue, of the "hot-melt" type, currently widely used commercially.
- the front plate 10 starts substantially (towards the front) from the line front contact 29 of ski 1, while rear plate 17 part substantially (towards the rear) of the rear contact line 30 from skiing.
- This is not limiting and, by way of example digital, a realization of the Applicant makes leave the plate 10 to 5 cm in front of the front contact line 29.
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Golf Clubs (AREA)
- Laminated Bodies (AREA)
- Road Paving Structures (AREA)
Description
- Figure 1 est une vue latérale grossière d'un ski à noyau injecté, ce ski étant conforme à l'invention.
- Figure 2 est une demi-coupe transversale de ce même ski, selon II-II de Figure 1.
- Figure 3 est une vue en coupe longitudinale agrandie d'une portion de la spatule de ce ski.
- Figure 4 est une vue perspective éclatée du classique renfort métallique inférieur de ce même ski, ce renfort étant surmonté, en spatule et au talon, d'une plaquette métallique bi-caoutchoutée, conformément à l'invention.
- Figure 5 et Figure 6 sont des vues semblables à Figure 3, et illustrant deux variantes de réalisation de ce ski.
- un ensemble inférieur constitué de la semelle 8 et du renfort inférieur 7, qui est alors, dans cet exemple, un classique renfort en tissu de verre précollé;
- et un ensemble supérieur constitué du dessus ou coque 5, doublé du renfort 6 en tissu de verre précollé, sur lequel on positionne, à une distance d déterminée pour qu'elle soit positionnée selon la fibre neutre 13 et correspondant à la hauteur de plots ou cordons d'entretoisement 33 positionnés régulièrement à cet effet, la bande de materiau visco-élastique 32.
Claims (13)
- Ski ou autre planche de glisse sur neige, comportant une enveloppe extérieure qui au moins comprend une semelle inférieure de glissement et un dessus en matériau plastique, l'âme ou noyau (2) de ce ski étant réalisé par un procédé d'injection "in situ" et s'étendant de l'extrémité arrière à l'extrémité avant, talonnière et éventuel embout de spatule rapportés non compris, au moins une bande longitudinale (11, 12, 32) en matériau ayant des propriétés d'élasticité au cisaillement étant prévue à l'intérieur de la structure qui définit la spatule (4) et/ou le talon et à proximité de la fibre neutre (13) de la planche, des moyens (7,10,33) étant en outre prévus pour maintenir, lors de l'opération d'injection du noyau, ladite bande longitudinale (11,12,32) sensiblement au niveau de ladite fibre neutre (13).
- Ski, ou autre planche de glisse sur neige, selon la revendication 1, caractérisé en ce que ladite bande longitudinale (11,12,32) est en un matériau visco-élastique.
- Ski, ou autre planche de glisse sur neige, selon l'une des revendications 1 ou 2, caractérisé en ce que ladite bande longitudinale (11,12) est portée par une plaquette semi-rigide (10,17), telle qu'une plaquette métallique.
- Ski, ou autre planche de glisse sur neige, selon la revendication 3, caractérisé en ce que cette plaquette (10,17) est recouverte d'une telle bande (11,12) sur ses deux faces.
- Ski, ou autre planche de glisse sur neige, selon la revendication 3 ou la revendication 4, caractérisé en ce que cette plaquette (10,17) est munie de bossages (25) et/ou d'emboutis (24) qui la maintiennent, avant l'opération d'injection, en position le long de la fibre neutre (13).
- Ski, ou autre planche de glisse sur neige, selon l'une des revendications 3 à 5, caractérisé en ce que cette plaquette (10,17) se raccorde longitudinalement à la structure interne (2) du ski (1) par une forme progressive (14,15,19,20).
- Ski, ou autre planche de glisse sur neige, selon l'une des revendications 3 à 6, caractérisé en ce que ladite plaquette est percée d'au moins un orifice (26) apte à permettre le passage du produit d'injection "in situ", et en ce que cette lumière ou orifice (26) a ses bords (27), revêtus d'une couche (28) de matériau élastique ou visco-élastique.
- Ski, ou autre planche de glisse sur neige, selon la revendication 7, caractérisé en ce que ce matériau élastique ou visco-élastique (28) est déposé sur la plaquette (10, 17) ainsi que sur les bords (27) de cet orifice (26) par un procédé de vulcanisation.
- Ski, ou autre planche de glisse sur neige, selon l'une des revendications 1 ou 2, caractérisé en ce que ladite bande longitudinale (32) est percée d'au moins un orifice (26) apte à permettre le passage du produit d'injection "in situ".
- Ski, ou autre planche de glisse sur neige, selon l'une des revendications 1 ou 2 ou 9, caractérisé en ce que cette bande longitudinale (32) est maintenue, avant l'opération d'injection, sensiblement le long de la fibre neutre (13) grâce à des plots ou cordons d'entretoisement (33).
- Ski, ou autre planche de glisse sur neige, selon la revendication 10, caractérisé en ce que ces plots ou cordons d'entretoisement (33) sont constitués par une colle pâteuse, telle qu'une colle "hot-melt".
- Ski, ou autre planche de glisse sur neige, selon l'une des revendications 1 à 11, caractérisé en ce que ladite bande longitudinale (11,12) s'étend, en largeur, sur pratiquement toute la largeur du noyau, pour ne laisser subsister, de part et d'autre respectivement, qu'une largeur (e) de noyau qui n'est pas supérieure à 2 mm environ.
- Ski, ou autre planche de glisse sur neige, selon la revendication 5, caractérisé en ce que, un renfort inférieur (7) étant prévu dans la structure du ski et étant maintenu (9) à distance de la semelle (8) du ski, des évidements (31) sont prévus dans ce renfort (7) pour laisser passer les brossages ou emboutis inférieurs (24) de la plaquette (10), ces derniers (24) reposant alors sur la semelle (8) et non pas sur ce renfort inférieur (7).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9400140 | 1994-01-04 | ||
FR9400140A FR2714615B1 (fr) | 1994-01-04 | 1994-01-04 | Ski, ou autre planche de glisse sur neige, à noyau injecté "in situ". |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0665034A1 EP0665034A1 (fr) | 1995-08-02 |
EP0665034B1 true EP0665034B1 (fr) | 1998-04-15 |
Family
ID=9458854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95420001A Expired - Lifetime EP0665034B1 (fr) | 1994-01-04 | 1995-01-04 | Ski à noyau injecté "In situ" |
Country Status (6)
Country | Link |
---|---|
US (1) | US5695209A (fr) |
EP (1) | EP0665034B1 (fr) |
JP (1) | JP3017230U (fr) |
AT (1) | ATE165018T1 (fr) |
DE (1) | DE69502033T2 (fr) |
FR (1) | FR2714615B1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6352268B1 (en) * | 1994-09-19 | 2002-03-05 | Stephen Peart | Snowboard with transitioning convex/concave curvature |
US5823545A (en) * | 1995-10-04 | 1998-10-20 | Goeckel; Gregory W. | Roller skate chassis |
FR2781686B1 (fr) * | 1998-07-31 | 2000-12-15 | Salomon Sa | Planche de glisse pour la pratique du ski alpin ou du surf de neige |
US6431604B1 (en) | 1999-01-29 | 2002-08-13 | Gregory W. Goeckel | Inline roller skate with attached slider plate |
US6309586B1 (en) | 1999-06-15 | 2001-10-30 | Jumbo Snowboards, Llc | Use of co-injection molding to produce composite parts including a molded snowboard with metal edges |
US6349961B1 (en) * | 1999-06-15 | 2002-02-26 | Jumbo Snowboards, Llp | Composite molded snowboard with metal edges |
AT411869B (de) * | 1999-12-22 | 2004-07-26 | Atomic Austria Gmbh | Brettartiges gleitgerät, insbesondere schi oder snowboard |
FR2845296B1 (fr) * | 2002-10-03 | 2004-12-24 | Salomon Sa | Planche de glisse ou de roulage |
FR2847483B1 (fr) * | 2002-11-22 | 2004-12-24 | Rossignol Sa | Planche de glisse et procede de fabrication d'une telle planche de glisse |
EP1693089B1 (fr) * | 2005-02-16 | 2009-01-07 | Skis Rossignol | Planche de glisse |
US9044664B1 (en) | 2008-04-10 | 2015-06-02 | Never Summer Industries, Inc. | Cambered snowboard |
US7798514B2 (en) * | 2008-04-10 | 2010-09-21 | Never Summer Industries, Inc. | Cambered snowboard |
AT11519U1 (de) * | 2010-01-27 | 2010-12-15 | Atomic Austria Gmbh | Verfahren zur herstellung eines äusseren begrenzungselementes für einen gleitbrettkörper sowie verfahren zur herstellung eines damit ausgestatteten gleitbrettkörpers |
NO20110815A1 (no) * | 2010-06-07 | 2011-12-08 | Hiturn As | Snobrett |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2065179A (en) * | 1933-11-18 | 1936-12-22 | Fosse Nils Olsen | Ski |
US2228202A (en) * | 1938-08-04 | 1941-01-07 | Davidson Hamish Mcleod | Laminated tip for skis |
US2581532A (en) * | 1946-08-23 | 1952-01-08 | Arne G Hem | Ski |
US2526137A (en) * | 1948-05-24 | 1950-10-17 | Everett M Hunt | Ski |
FR1241437A (fr) * | 1958-11-20 | 1960-09-16 | Ski | |
FR1435153A (fr) * | 1965-03-04 | 1966-04-15 | Plastiques Synthetiques | Ski perfectionné en matière plastique |
FR1483838A (fr) * | 1966-04-05 | 1967-06-09 | Habillage antivibratoire pour ski métallique | |
FR2048079A5 (en) * | 1969-06-02 | 1971-03-19 | Rossignol Abel Ets | Metal and plastics ski |
US3635483A (en) * | 1969-09-02 | 1972-01-18 | Larson Ind Inc | Encapsulated plastic snow ski |
US3636482A (en) * | 1970-05-25 | 1972-01-18 | Federal Pacific Electric Co | Modular circuit breakers and panelboards with ground-fault protection |
DE2114502A1 (de) * | 1971-03-25 | 1972-10-05 | Franz VolkloHG, 8440 Straubing | Ski |
FR2185421B1 (fr) * | 1972-05-24 | 1976-03-12 | Lacroix Skis Sa L | |
US3901522A (en) * | 1973-07-18 | 1975-08-26 | Olin Corp | Vibration damped ski |
CH604768A5 (fr) * | 1975-06-20 | 1978-09-15 | Rossignol Sa | |
FR2476495A1 (fr) * | 1980-02-21 | 1981-08-28 | Rossignol Sa | Ski |
ATA204981A (de) * | 1981-05-08 | 1982-12-15 | Rohrmoser Alois Skifabrik | Ski |
DE3439682A1 (de) * | 1984-10-10 | 1986-04-17 | Lutz Alois 8024 Oberhaching Post Deisenhofen Wintersberger | Armierungseinlage fuer skier |
NO870539L (no) * | 1986-02-21 | 1987-08-24 | Rohrmoser Alois Skifabrik | Forsterkningselement for inkorporering i en harpiks og anvendelse av dette elementet. |
FR2605234B1 (fr) * | 1986-10-20 | 1988-12-09 | Rossignol Sa | Procede de fabrication d'un ski et ski obtenu par ce procede |
FR2611518B1 (fr) * | 1987-02-27 | 1989-11-17 | Salomon Sa | Ski a amortissement reparti |
FR2618079B1 (fr) * | 1987-07-15 | 1995-03-31 | Salomon Sa | Ski a face superieure mixte |
FR2654670A1 (fr) * | 1989-11-23 | 1991-05-24 | Rossignol Sa | Procede pour la fabrication en une seule operation d'une structure moulee complexe, notamment un ski, et structure moulee complexe ainsi obtenue. |
AT393224B (de) * | 1990-02-08 | 1991-09-10 | Tyrolia Freizeitgeraete | Ski |
US5286051A (en) * | 1990-04-04 | 1994-02-15 | Atomic Skifabrik Alois Rohrmoser | Alpine ski with a minimum width and specific width/length ratio |
FR2694890B1 (fr) * | 1992-08-24 | 1994-10-14 | Rossignol Sa | Ski comportant un corps et au moins un embout, spatule et/ou talon réalisé indépendamment, et procédé de fabrication d'un tel ski. |
-
1994
- 1994-01-04 FR FR9400140A patent/FR2714615B1/fr not_active Expired - Fee Related
- 1994-12-27 JP JP1994015987U patent/JP3017230U/ja not_active Expired - Lifetime
-
1995
- 1995-01-04 EP EP95420001A patent/EP0665034B1/fr not_active Expired - Lifetime
- 1995-01-04 DE DE69502033T patent/DE69502033T2/de not_active Expired - Fee Related
- 1995-01-04 AT AT95420001T patent/ATE165018T1/de not_active IP Right Cessation
- 1995-01-04 US US08/368,622 patent/US5695209A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2714615B1 (fr) | 1996-02-16 |
DE69502033T2 (de) | 1998-10-08 |
DE69502033D1 (de) | 1998-05-20 |
JP3017230U (ja) | 1995-10-24 |
ATE165018T1 (de) | 1998-05-15 |
FR2714615A1 (fr) | 1995-07-07 |
EP0665034A1 (fr) | 1995-08-02 |
US5695209A (en) | 1997-12-09 |
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