EP0806228A1 - Ski - Google Patents

Ski Download PDF

Info

Publication number
EP0806228A1
EP0806228A1 EP97420072A EP97420072A EP0806228A1 EP 0806228 A1 EP0806228 A1 EP 0806228A1 EP 97420072 A EP97420072 A EP 97420072A EP 97420072 A EP97420072 A EP 97420072A EP 0806228 A1 EP0806228 A1 EP 0806228A1
Authority
EP
European Patent Office
Prior art keywords
ski
thickness
zone
upper element
length
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
EP97420072A
Other languages
English (en)
French (fr)
Other versions
EP0806228B1 (de
Inventor
Roger Abondance
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 EP0806228A1 publication Critical patent/EP0806228A1/de
Application granted granted Critical
Publication of EP0806228B1 publication Critical patent/EP0806228B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A63C5/0405—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker

Definitions

  • the invention relates to the field of alpine skiing and cross-country skiing. It relates more particularly to an improved geometry in which the variation in thickness of the ski over the length thereof gives very significant gliding properties.
  • a ski can be compared to a beam or a board slightly curved longitudinally to form the camber of the ski, with a front part raised to form the tip and a rear part also slightly raised to form the heel.
  • the ski being laid flat on the snow, and under the effect of the skier's load, the bottom surface or sole remains in contact with the snow from the front contact line to the rear contact line. The distance between the front and rear contact lines determines the "bearing length" of the ski.
  • this beam is precisely determined to give the ski the desired behavior, in particular in bending and in torsion.
  • the beam or the board has a certain flexibility which allows it to follow the shape of the ground.
  • the flexibility characteristics largely result from the variation in thickness of the board between the front and rear contact lines.
  • the thickness of the ski increases continuously from the front contact line to the area of the skate in which it is maximum. This thickness then decreases continuously up to the rear contact line.
  • Such a geometry is for example described in patent FR 2 700 476 in the case of a cross-country ski.
  • This thickness distribution generally combines with a variation in width of the ski according to its length, to give the latter a specific behavior.
  • the pressure exerted on the snow for a ski is maximum at the level of the skate, near the skier's foot, then decreases progressively until it vanishes in the vicinity of the ends.
  • This pressure distribution curve is mainly linked to the variation in thickness along the ski.
  • the overpressure zone of the skate has a negative influence on the sliding characteristics of the board.
  • the problem which the invention therefore proposes to solve is to significantly increase the sliding characteristics of a ski without modifying its dynamic behavior.
  • the invention therefore relates to a ski intended for the practice of alpine skiing or cross-country skiing, formed of a body and the sole of which has a bearing surface of length Lp delimited at the front and at the rear by the lines of contact respectively before A 'and rear D', and whose thickness is E A at the level of the front contact line A 'and E D at the level of the rear contact line D'.
  • the invention consists in giving the ski a constant thickness in its central part, to ensure a uniform distribution of the pressure exerted on the snow.
  • the zones situated in front and behind the characteristic intermediate zone are of decreasing thickness up to the contact lines.
  • a ski according to the invention has in its central zone an upper face parallel to the sole.
  • the invention is not limited to skiing in which the thickness of the intermediate zone is strictly constant, but also covers the embodiments in which this thickness is substantially constant.
  • substantially constant is meant that the maximum difference in thickness at two points in this intermediate zone is at most equal to five percent (5%) of the total thickness.
  • the invention relates to narrow skis used for cross-country skiing or for alpine skiing, on which the user's foot is positioned along the longitudinal axis.
  • the thickness E of the intermediate zone Z BC is between twenty two millimeters (22 mm) and thirty five millimeters (35 mm).
  • the thickness of the ski decreases from the characteristic intermediate zone to the front and rear contact lines.
  • the intermediate zone Z BC is constituted by a monobloc part of the beam.
  • the intermediate zone Z BC is constituted by the superposition of a part of the beam and of an upper element surmounting it.
  • the upper face of the ski receives in the characteristic intermediate zone a rigid plate which ensures uniform transmission over its entire length of the weight and the impulses generated by the skier, so that the distribution of the pressure exerted on the snow as uniform as possible over the entire length of the characteristic intermediate zone.
  • the entire length of the upper element is glued to the beam.
  • the central part of the upper element is glued to the beam and the front and rear extreme parts of the reinforcing element are connected to the beam by strips of visco-elastic material. This makes it possible to reduce the stresses at the ends of the upper element and to benefit from phenomena of damping by shearing of the viscoelastic bands.
  • the extreme front and rear parts of this upper element may have vertical sections, corresponding to a thickness step. These end portions may also have inclined faces in the direction of the front and rear contact lines respectively, so as to ensure a continuous thickness variation without breakage.
  • the upper element can take different forms which prove to be interesting, either to manufacture or under the conditions of use.
  • the front and rear end portions of the upper element have inclined faces in the direction of the contact lines respectively before A 'and rear D'.
  • the upper element is seen from above in a generally rectangular shape.
  • the front and rear end portions of the upper element conform to a V shape, the point of which is directed towards the outside of the upper element.
  • the front and rear end portions of the upper element form, in top view, two non-parallel lines.
  • the beam and the upper element can either be both of constant thickness, or be of complementary shapes so that the thickness of the assembly is of constant thickness.
  • the upper beam and element can be convex or concave.
  • Figure 1 is a side view of a ski according to the invention, in which the proportions have been exaggeratedly modified to allow a good understanding of the dimensional criteria characteristic of the invention.
  • Figure 2 is a side view of a ski according to an alternative embodiment.
  • Figure 3 is a side view of a detail of the connecting area of the intermediate and front areas characteristic of the invention.
  • FIG. 4 is an alternative embodiment of FIG. 3.
  • Figures 5 to 7 are top views of skis having characteristic upper elements in three form variants.
  • FIG. 8 is a detail side view of the intermediate zone of a ski equipped with an upper element connected to the upper face of the ski in part by strips of viscoelastic material.
  • the invention relates to a ski, cross-country or downhill, which has over its length, a characteristic thickness variation.
  • a ski (1) consists mainly of a beam (2) whose lower face (3) forms the sole.
  • the thickness of the ski at the contact lines is less than the thickness measured in the bearing surface.
  • the thicknesses at the front (A ') and rear (D') contact lines are denoted E A and E D respectively .
  • the bearing surface breaks down into three contiguous zones, namely: a central zone Z BC, framed by two zones respectively before Z AB and Z CD .
  • the central zone Z BC extends over at least forty percent (40%), and preferably fifty percent (50%) of the length Lp of the bearing zone, and has a substantially constant thickness E .
  • substantially constant, it is meant that the maximum difference between the thicknesses measured on two points of this central zone Z BC is at most equal to five percent (5%) and preferably less than one percent (1%) of the total thickness E, while this difference is greater than 25% and 10% respectively on a cross-country ski and an alpine ski in accordance with the Prior Art.
  • the variation in thickness on the zones before Z AB and Z CD also meets precise criteria.
  • the quotient of the difference in thickness by the length is between 0.01 and 0.1, that is to say: 0.01 ⁇ E - E AT L AB ⁇ 0.1
  • the intermediate zone Z CD may have a length greater than 630 mm and more favorably 800 millimeters.
  • the thickness E of this same area must be between 15 and 35 millimeters, while the thickness E A , E D at the front and rear contact lines can vary at the same time between 4 and 12 millimeters .
  • the intermediate zone of constant thickness can be constituted either by a very portion of the beam (2), or be formed by the association of the beam and an upper element (10 ) arranged on the upper face (6) of the ski.
  • the intermediate zone Z BC is in one piece, it may or may not be seen there as a break in curvature at the points B and C constituting the limits of the intermediate zone, or else ensuring a smooth transition easier to manufacture.
  • the upper element may have ends (11, 12) of various geometries.
  • this end (11) a vertical pan shape (13) or else a beveled shape (14) ensuring a gradual thickness variation over a short transition range.
  • the upper element (10) has a substantially rectangular shape, and the end portions (11, 12) end in straight segments (16, 17), mutually parallel and perpendicular to the median longitudinal plane ski.
  • the extreme parts (11, 12) of the upper element (10) follow herringbone shapes (18, 19) oriented by the ends of the ski. This allows the pressure distributing effect of the upper element (10) to be extended forwards and backwards.
  • the ends (11, 12) of the upper element (10) conform to the shapes of straight segments (20, 21) which, the extensions of which converge, on one side of the ski, substantially at the median length of the upper element (10). This creates an asymmetry between the left and right ski.
  • the upper element (10) can be connected to the upper face (6) of the ski by gluing or other equivalent means, as illustrated only in its middle part.
  • the front and rear parts of the reinforcing element (10) are connected to the upper face (6) of the ski by strips of viscoelastic materials (25, 26), which allows a uniform distribution of pressure while by ensuring a damping effect by shearing of the viscoelastic material.
  • a cross-country or downhill ski in accordance with the invention has, thanks to its variation in thickness over its length, gliding qualities clearly superior to that of skis existing hitherto.

Landscapes

  • Road Paving Structures (AREA)
  • Lubricants (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Laminated Bodies (AREA)
  • Rotary Pumps (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
EP97420072A 1996-05-07 1997-05-05 Ski Expired - Lifetime EP0806228B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605945A FR2748398B1 (fr) 1996-05-07 1996-05-07 Planche de glisse
FR9605945 1996-05-07

Publications (2)

Publication Number Publication Date
EP0806228A1 true EP0806228A1 (de) 1997-11-12
EP0806228B1 EP0806228B1 (de) 2001-11-21

Family

ID=9492092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97420072A Expired - Lifetime EP0806228B1 (de) 1996-05-07 1997-05-05 Ski

Country Status (4)

Country Link
EP (1) EP0806228B1 (de)
AT (1) ATE209060T1 (de)
DE (1) DE69708377T2 (de)
FR (1) FR2748398B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3084596A1 (fr) * 2018-08-01 2020-02-07 Skis Rossignol Ski alpin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006806A1 (de) 2007-02-07 2008-08-14 Mauser-Werke Oberndorf Maschinenbau Gmbh Bruchtrennverfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623095A1 (fr) * 1987-11-18 1989-05-19 Salomon Sa Dispositif de guidage lateral d'une chaussure sur un ski de fond
DE3933717A1 (de) * 1988-10-10 1990-04-12 Varpat Patentverwertung Schi mit relativ zum kern verstellbaren tragschichtteil
EP0490044A1 (de) * 1990-12-14 1992-06-17 Salomon S.A. Wintersportski bestehend aus einer Versteifung und einer Basis
EP0553417A1 (de) * 1992-01-28 1993-08-04 Salomon S.A. Verbesserung eines Skis mittels einer Zentralen, Vorsprünge aufweisenden Plattform
FR2704155A1 (fr) * 1993-04-20 1994-10-28 Salomon Sa Surf des neiges à plateforme en matériau à faible module et inserts locaux.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623095A1 (fr) * 1987-11-18 1989-05-19 Salomon Sa Dispositif de guidage lateral d'une chaussure sur un ski de fond
DE3933717A1 (de) * 1988-10-10 1990-04-12 Varpat Patentverwertung Schi mit relativ zum kern verstellbaren tragschichtteil
EP0490044A1 (de) * 1990-12-14 1992-06-17 Salomon S.A. Wintersportski bestehend aus einer Versteifung und einer Basis
EP0553417A1 (de) * 1992-01-28 1993-08-04 Salomon S.A. Verbesserung eines Skis mittels einer Zentralen, Vorsprünge aufweisenden Plattform
FR2704155A1 (fr) * 1993-04-20 1994-10-28 Salomon Sa Surf des neiges à plateforme en matériau à faible module et inserts locaux.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3084596A1 (fr) * 2018-08-01 2020-02-07 Skis Rossignol Ski alpin

Also Published As

Publication number Publication date
EP0806228B1 (de) 2001-11-21
FR2748398A1 (fr) 1997-11-14
DE69708377D1 (de) 2002-01-03
ATE209060T1 (de) 2001-12-15
FR2748398B1 (fr) 1998-06-12
DE69708377T2 (de) 2002-08-14

Similar Documents

Publication Publication Date Title
EP0622096B1 (de) Snowboard
EP0465794B1 (de) Ski mit gerippter Oberfläche
EP0744194B1 (de) Snowboard mit Hilfsseitenwange
EP0780143B1 (de) Gleitbrett mit Versteifungsvorrichtung
EP0740945B1 (de) Gleitbrett mit Unterlage zur Erhöhung der Bindung
EP0628327B1 (de) Alpinski mit verbessertem Profil
EP0373083B1 (de) Alpin-Ski
FR2845611A1 (fr) Planche de glisse sur neige a spatule et a releve de talon ameliores
EP0855201B1 (de) Gleitbrett
EP0439713B1 (de) Langlaufski zum Gleiten
EP0931569B1 (de) Gleitbrett, wobei die Seitenwangen auf einem Teil ihrer Länge Verstärkungen aufweisen
EP0806228B1 (de) Ski
CH668000A5 (fr) Ski.
EP0661086B1 (de) Ski
EP1994965A1 (de) Ski mit Aussparung am hinteren Ende
FR2750877A1 (fr) Engin de deplacement sur neige
EP1594580A2 (de) Ski mit kurzem radius und langer spitze
FR2848466A1 (fr) Ski alpin
EP0631517A1 (de) Langlaufski.
EP0367964A1 (de) Ski mit einem Schwingungsdämpfer auf dem Vorderteil
FR2808698A1 (fr) Ski prevu pour la pratique du ski alpin
FR2758467A1 (fr) Cale intermediaire entre un ski et un element de retenue et ensemble de ski comprenant le ski et la cale
EP1410827A1 (de) Gleitbrett
FR2674443A1 (fr) Ski a face superieure nervuree.
WO1995011066A1 (fr) Dispositif destine a diminuer la pression des extremites du ski sur la neige suivant l'appui du skieur sur le ski

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR IT SE

17P Request for examination filed

Effective date: 19971115

17Q First examination report despatched

Effective date: 20010104

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20011121

REF Corresponds to:

Ref document number: 209060

Country of ref document: AT

Date of ref document: 20011215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69708377

Country of ref document: DE

Date of ref document: 20020103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020221

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20050414

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060505

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060510

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090602

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080429

Year of fee payment: 12