EP0665034A1 - Ski mit "in situ" injiziertem Kern - Google Patents

Ski mit "in situ" injiziertem Kern Download PDF

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Publication number
EP0665034A1
EP0665034A1 EP95420001A EP95420001A EP0665034A1 EP 0665034 A1 EP0665034 A1 EP 0665034A1 EP 95420001 A EP95420001 A EP 95420001A EP 95420001 A EP95420001 A EP 95420001A EP 0665034 A1 EP0665034 A1 EP 0665034A1
Authority
EP
European Patent Office
Prior art keywords
ski
snow
board
plate
elastic
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.)
Granted
Application number
EP95420001A
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English (en)
French (fr)
Other versions
EP0665034B1 (de
Inventor
Henri-Charles Deborde
François Jodelet
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
Original Assignee
Skis Rossignol SA
Rossignol SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0665034A1 publication Critical patent/EP0665034A1/de
Application granted granted Critical
Publication of EP0665034B1 publication Critical patent/EP0665034B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 board for sliding on snow, the core of which is produced "in situ", either by a technique of pouring a non-cellular thermoplastic or thermosetting product, or by an injection technique. components of a foam of a synthetic product.
  • the synthetic product in question is most of the time a polyurethane foam.
  • the compounds of this foam are injected into the mold at the level of the spatula or at the heel, and it is these compounds which, by reacting with one another, form this foam inside the mold.
  • the synthetic foam then fills the entire internal cavity of the ski to form a core.
  • the rear end of the ski is blocked by a tip called a "heel piece", and this internal cavity extends between the heel piece and the front end of the tip, this front end can either be truncated to then receive an attached tip tip. , or not be truncated and therefore end at a point to constitute the front end of the ski.
  • the core of the ski therefore extends over substantially the entire length of the ski, heel piece and any added tip tip not included, unlike most more traditional skis, with a non-injected sandwich structure, for which the core, which is then produced and machined before the ski-to-mold manufacturing operation, stops at the front and rear contact lines of the ski, that is to say respectively at the birth of the tip and at the birth of the heel .
  • the core portion which occupies the internal part of the tip and the heel is relatively thin.
  • this core is, in the tip and in the heel, practically constituted by the superposition of the two upper and lower "skin layers" of the core.
  • any rigid plastic foam part 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 part.
  • 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 for manufacturing skis, but it necessarily remains inside the ski in the case of its manufacture by the injection process "in if you”.
  • the tip and the heel of the injected skis are particularly brittle elements, which is very annoying in particular for the tip which is an element whose overhang is very important.
  • the tip oscillates considerably due to its pendulum effect. important overhang: it is said then that it "whips". As on the injected skis the core extends to the end of the tip, this results in significant deformation. In addition, the use of skis being carried out in very harsh conditions of cold and humidity, the risks of breakage are very important.
  • a median surface called neutral fiber represents the zone where the stresses are zero but where the shear is maximum.
  • the parts of the core of high density which occupy the interior of the two end elements, tip and tail, have, because of their high density, a relatively low resistance to the shearing effects which result from these stresses, which can cause damaging delamination inside the ski structure.
  • the invention aims to remedy these drawbacks. It relates to a ski, or other board for sliding on snow, comprising an outer casing which at least comprises a lower sliding sole and an upper made of plastic material, the central core or core of this ski being produced by a method of filling "in situ" with an expandable material or not and extending from the rear end, or heel, of the ski, to the front end, or tip, of this ski, heel piece and any added tip of the tip not included.
  • this elastic band is carried by a semi-rigid plate, such as a metal plate, the latter being preferably covered with an elastic band on its two faces.
  • 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 type called "shell injected”, and therefore having a core 2 of injected polyurethane foam which extends from the front end 3 of the tip 4 to the rear end 21 of the heel 22, added heel piece 23 not included, the top and the edges of this ski being formed by a shell 5 made from a sheet of material plastic.
  • the added heel piece 23 is an element independent of the core of the ski 1 and positioned at the rear of the latter. In fact it can be added after demolding, or positioned in the mold before the injection operation. The nucleus therefore stops at the transverse line 21 as above mentioned.
  • front end of the tip is the end of the tip 4 which forms an integral part of the body and therefore of the core of the ski 1. It obviously does not include the possible (absent in this case) tip of a spatula that is sometimes brought on the end, then truncated accordingly, of the spatula 4.
  • Figure 1 are indicated on the one hand the front contact line 29 and on the other hand the rear contact line 30 which respectively characterize, as is known, the birth of the tip and the heel, or, in in other words, the start of the "tip-tip” as well as the start of the "heel-tip”.
  • 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 an openwork metal band is placed on the sliding sole 8 of the ski, itself bordered by the edges 16.
  • This metal reinforcement 7 is embedded in the polyurethane and, for this, it has a certain number of stampings 9 which keep it, before the injection operation, at a sufficient distance from the sole 8.
  • a metal plate 10 for example made of aluminum alloy, totally embedded in the polyurethane and covered with a strip or elastic layer 11,12 on each of its two faces (upper and lower), is positioned in the structure of the tip 4 along the neutral fiber 13 of the ski.
  • the elastic layers 11 and 12 are made of any elastic material: 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 damping properties of the vibratory wave which tends to arise during the pendulum oscillations of this tip. during skiing.
  • the plate 10 is arched to match the camber of the spatula. It marries, at the front, the pointed shape of the latter and at the rear, it does not suddenly connect with the internal structure of the ski which essentially constitutes the core 2, but progressively according to two pointed fins 14 , 15 ( Figure 4)
  • This plate 10 is held in position, in the injection mold, on the one hand by means of stampings or lower bosses 24 by which it rests on the reinforcing plate 7 and is kept at a distance therefrom to allow passage easy 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 latter is pierced with at least one consequent lumen or orifice 26 whose edges 27 are also covered with a layer 28 of visco-elastic material.
  • the layers 10, 11, 28 are all deposited in the same vulcanization operation of the same visco-elastic material, and they are of the same thickness.
  • the layer 28 allows the plate 10 to work in shear without being prevented by the material constituting the core 2 passing through the orifice 26.
  • the plate 10 can work in shearing over almost the entire width of the core 2, and, as clearly shown in Figure 2, it therefore extends over practically the entire width of this core 2, so as not to leave on each side respectively that a width "e" of filling material 2 which is not more than about 2 mm.
  • this injected ski is also provided, at the heel, with another bi-rubberized metal plate 17 which, like the front plate 10, is positioned at the neutral fiber 13, and which is provided with bosses 18 for holding in position.
  • connection, in the longitudinal direction, of the plate 17 with the internal structure 2 of the ski is not carried out abruptly, but gradually.
  • the front edge 19 of the pad 17 has a point shape, while its rear edge 20 follows the shape of the heel of the ski.
  • the length of these plates 10,17 corresponds approximately to the cantilever lengths of the tip and the heel, that is to say respectively between 220 and 300 mm for the tip and between 30 and 80 mm for the heel .
  • the thicknesses of the elastic layers 11 or 12 can vary from 0.05 to 2 mm.
  • the plates 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 as possibly of different thicknesses. They could be deposited by bonding, and not by vulcanization.
  • the plates 10, 17 could be made of another semi-rigid material, for example made of "ABS" or other similar plastic material.
  • a support plate is interesting, because it increases the solidity in the heel and in the tip, but it is in no way obligatory, and one could simply provide, in spatula and / or in the heel, to position, according to FIG. 6, a band 32 of elastic material, of same shape for example as the plates 10 and 17 and also provided with the orifice 26, according to the neutral fiber 13.
  • the positioning of this elastic band could be carried out for example, as illustrated in Figure 6, by means bracing studs or cords 33, constituted by a pasty glue, of the "hot-melt" type, currently widely used in commerce.
  • the front plate 10 leaves substantially (towards the front) from the front contact line 29 of the ski 1, while the rear plate 17 leaves substantially (towards the rear) from the line rear contact 30 of the ski.
  • This is not limiting and, by way of a digital example, one of the Applicant's embodiments makes the plate start 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)
  • Road Paving Structures (AREA)
  • Laminated Bodies (AREA)
EP95420001A 1994-01-04 1995-01-04 Ski mit "in situ" injiziertem Kern Expired - Lifetime EP0665034B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400140A FR2714615B1 (fr) 1994-01-04 1994-01-04 Ski, ou autre planche de glisse sur neige, à noyau injecté "in situ".
FR9400140 1994-01-04

Publications (2)

Publication Number Publication Date
EP0665034A1 true EP0665034A1 (de) 1995-08-02
EP0665034B1 EP0665034B1 (de) 1998-04-15

Family

ID=9458854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95420001A Expired - Lifetime EP0665034B1 (de) 1994-01-04 1995-01-04 Ski mit "in situ" injiziertem Kern

Country Status (6)

Country Link
US (1) US5695209A (de)
EP (1) EP0665034B1 (de)
JP (1) JP3017230U (de)
AT (1) ATE165018T1 (de)
DE (1) DE69502033T2 (de)
FR (1) FR2714615B1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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
US6349961B1 (en) * 1999-06-15 2002-02-26 Jumbo Snowboards, Llp Composite molded snowboard with metal edges
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
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 (de) * 2005-02-16 2009-01-07 Skis Rossignol Gleitbrett
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526137A (en) * 1948-05-24 1950-10-17 Everett M Hunt Ski
FR2185421A1 (de) * 1972-05-24 1974-01-04 Lacroix Skis Sa L
FR2605234A1 (fr) * 1986-10-20 1988-04-22 Rossignol Sa Procede de fabrication d'un ski et ski obtenu par ce procede

Family Cites Families (22)

* Cited by examiner, † Cited by third party
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
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
US3901522A (en) * 1973-07-18 1975-08-26 Olin Corp Vibration damped ski
CH604768A5 (de) * 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.
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.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526137A (en) * 1948-05-24 1950-10-17 Everett M Hunt Ski
FR2185421A1 (de) * 1972-05-24 1974-01-04 Lacroix Skis Sa L
FR2605234A1 (fr) * 1986-10-20 1988-04-22 Rossignol Sa Procede de fabrication d'un ski et ski obtenu par ce procede

Also Published As

Publication number Publication date
EP0665034B1 (de) 1998-04-15
FR2714615A1 (fr) 1995-07-07
DE69502033T2 (de) 1998-10-08
JP3017230U (ja) 1995-10-24
FR2714615B1 (fr) 1996-02-16
ATE165018T1 (de) 1998-05-15
DE69502033D1 (de) 1998-05-20
US5695209A (en) 1997-12-09

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