EP0367964A1 - Ski mit einem Schwingungsdämpfer auf dem Vorderteil - Google Patents

Ski mit einem Schwingungsdämpfer auf dem Vorderteil Download PDF

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Publication number
EP0367964A1
EP0367964A1 EP89117609A EP89117609A EP0367964A1 EP 0367964 A1 EP0367964 A1 EP 0367964A1 EP 89117609 A EP89117609 A EP 89117609A EP 89117609 A EP89117609 A EP 89117609A EP 0367964 A1 EP0367964 A1 EP 0367964A1
Authority
EP
European Patent Office
Prior art keywords
ski
inertia
additional
mass
masses
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
EP89117609A
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English (en)
French (fr)
Other versions
EP0367964B1 (de
EP0367964B2 (de
Inventor
Maurice Legrand
François Guers
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.)
Salomon SAS
Original Assignee
Salomon SAS
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9372462&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0367964(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Salomon SAS filed Critical Salomon SAS
Priority to AT89117609T priority Critical patent/ATE80053T1/de
Publication of EP0367964A1 publication Critical patent/EP0367964A1/de
Publication of EP0367964B1 publication Critical patent/EP0367964B1/de
Application granted granted Critical
Publication of EP0367964B2 publication Critical patent/EP0367964B2/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
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/075—Vibration dampers
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices

Definitions

  • the present invention relates to skis in which one or more additional masses of inertia make it possible to modify and adjust the moment of inertia of the ski both around a vertical axis and around a horizontal axis perpendicular to the direction longitudinal of the ski.
  • the moment of inertia around the vertical axis, or axis of rotation of the ski influences the behavior of the ski in rotation, by determining the resistance that the ski opposes to a variation in the direction of movement.
  • a ski with a low moment of inertia for example a short ski or a light ski at its ends, is easier to turn than a ski with a high moment of inertia.
  • An easy to turn ski is particularly suitable for special snow conditions such as deep snow, spring snow, and for special terrain conditions such as bumpy slopes.
  • a ski with a high moment of inertia for example an elongated ski or a ski having relatively large masses at its ends, is particularly stable in direction during a rapid descent, because the forces exerted laterally on the ski by the Track unevenness is better absorbed due to the higher moment of inertia.
  • French patent FR-A-2 382 245 teaches to have additional masses of inertia on the upper surface of the ski, at the two ends of the ski. This document does not include any teaching on the positioning of inertia masses in the particular zones which provide an appropriate effect as will be described below.
  • the aim of the present invention is to produce a ski with a light structure having an inertia in appropriate pivoting, and having a vibratory behavior in bending giving it appropriate properties.
  • the precision and regularity of driving a turn is significantly improved by less sensitivity of the front of the ski to the relief of the track; directional stability is significantly improved to make it similar to that of heavy skis, without however increasing the total weight of the ski and keeping it at a value substantially lower than that of heavy skis.
  • the ski can be easily oriented at low speed of movement or rotation, while its relatively high moment of inertia absorbs the rapid stresses imparted by the reliefs of the track. This results in less physical and psychological fatigue for the skier.
  • the ski according to the present invention comprises a light structure, with a cell nucleus, and is provided, at least in its front part, with a density element greater than the average structure density of the ski body and constituting an additional mass of inertia before; the ski body has a front end raised in a tip, and a rear end also slightly raised.
  • the lower contact surface of the ski ends forward and is connected to the lower surface of the tip according to a transverse front contact line.
  • a rear transverse contact line also limits the contact area of the ski body.
  • the front inertia mass is fixed and placed in the vicinity of the transverse front contact line.
  • the front mass of inertia is thus moved as far away from the center of the ski as possible, providing a maximum moment of inertia for a given mass.
  • the location of the additional mass of inertia in the vicinity of the transverse line also prevents the appearance of vibratory side effects, side effects which appear when an additional mass of inertia is placed in the vicinity of the ends of the ski, c '' in other words in the raised front part of the ski forming a tip, or in the rear also raised part of the ski.
  • the front mass of inertia is substantially centered on the vertical plane passing through the front transverse contact line, and is distributed longitudinally over a certain length on either side of said vertical plane passing through the front contact line. It is preferable that the mass of inertia is distributed over a certain length, because this in particular avoids having the feeling of "hitting" in a bump or when receiving a jump when using the ski.
  • the body of the ski is advantageously curved.
  • Such a structure combined with the particular position of the front mass of inertia, places this mass of inertia in an area in which the contact pressure between the ski sole and the ground has a relative maximum.
  • an additional mass of inertia placed at the front of the ski an additional mass of inertia placed at the rear of the ski, of value less than the additional mass of inertia before , and arranged in the vicinity of the rear end of the ski contact area, or rear contact line.
  • the additional masses are centered in the vicinity of the median vertical longitudinal plane of the ski.
  • the masses may be relatively close to the median longitudinal vertical plane.
  • the front mass of inertia is divided into two lateral half-masses arranged respectively on either side of the median longitudinal vertical plane of the ski, near the side edges of the ski.
  • the ski according to the present invention comprises, in a traditional way, a ski body 1 whose central part is curved, curved in an upward arc and whose two ends are raised upwards, the front end forming a spatula 2, the rear end 3 also being raised upwards.
  • the bending of the central part of the body 1 causes the ski to rest on the plane 4 along two transverse lines, a transverse front contact line 5, a transverse rear contact line 6.
  • the ski When in use, the ski is intended to rest on the ground according to its lower contact surface 7, which surface is limited by the two lines 5 and 6.
  • An additional front inertia mass 8 is placed in the vicinity of the front transverse contact line 5.
  • An additional rear inertia mass 9 is placed in the vicinity of the rear transverse contact line 6.
  • the additional masses of inertia 8 and 9 are fixed on the upper surface 10 of the ski.
  • the additional inertia masses 8 and 9 are fixed and incorporated in the body of the ski, being non-visible or only partially visible on the upper surface 10 of the ski.
  • FIG. 2 shows a ski according to the present invention provided with its two additional masses of inertia 8 and 9, placed on a flat surface 4, and subjected to a load such as the weight of a user.
  • a load such as the weight of a user.
  • the lower contact surface 7 of the ski is entirely in contact with the plane 4.
  • the contact pressure between the lower ski surface 7 and the plane 4 varies as a function of the longitudinal position considered along the ski.
  • This pressure has a maximum 11 under the central zone occupied by the bindings and receiving the weight of the skier.
  • This pressure then has a minimum on either side of the maximum 11, namely a minimum 12 in the front third of the ski and a minimum 13 in the rear third.
  • the pressure has a relative maximum 14 in the vicinity of the transverse line of contact front 5 of the ski and a second relative maximum 15 in the vicinity of the rear transverse contact line 6 of the ski. It can therefore be seen that, when the additional inertia masses 8 and 9 of which are positioned according to the invention, in the vicinity of the front contact lines 5 and rear 6 of the ski, their position corresponds to a relative maximum of contact pressure below the surface ski.
  • the additional front mass of inertia 8 is in one piece, and is distributed uniformly on either side of the median longitudinal axis II - II of the ski. It may for example be a plate of constant thickness, and of density greater than the average density of the ski body 1.
  • the additional mass of inertia 8 extends to the vicinity of the edges 16 and 17 of the ski.
  • the additional mass of inertia before 8 is distributed on either side of the vertical plane I - I passing through the transverse line of contact before 5 along a certain length, of the order of 15 to 25 centimeters.
  • the distance L1 between the anterior end of the additional mass of inertia 8 and the vertical plane I - I passing through the front transverse contact line 5 is advantageously between 0 and 10 centimeters; similarly, the length L2 between the rear end of the additional mass of inertia 8 and the vertical plane I - I passing through the front transverse contact line 5 is advantageously between 0 and 15 centimeters.
  • FIG. 5 represents, in top view, the rear part of the ski comprising an additional rear mass of inertia 9.
  • the additional mass of inertia 9 is distributed, over a certain length in the longitudinal direction of the ski, on either side of the vertical plane III - III passing through the rear contact line 6, and is centered in the vicinity of the median longitudinal vertical plane II - II of the ski.
  • ski For the types of ski corresponding to a preferred type of evolution, for example a slalom ski, a giant slalom ski, a downhill ski, or a multi-purpose ski, it is possible to approximately adapt the behavior of the ski by adjusting the value of the additional masses of inertia 8 and 9.
  • An additional mass of inertia before 8 of value between 40 and 200 will advantageously be chosen grams, and an additional rear inertia mass 9 with a value between 0 and 100 grams.
  • the additional front inertia mass 8 has a value greater than the rear additional inertia mass 9, the difference between the two masses possibly being of the order of 50 grams.
  • each mass being distributed in a non-uniform manner over the width of the ski, for example distributed according to two half-masses equal to half the total additional mass of inertia on each of the edges of the ski.
  • a ski is not only subjected to bending and pivoting forces, but also to torsional forces and excitations. It turns out that such a distribution of masses in the vicinity of the edges of the ski, significantly modifies the natural modes of torsional vibration and damping of the ski.
  • FIGS. 6 to 10 show various embodiments of additional inertia masses, in which the masses are more or less off-center on the edges of the ski.
  • the additional front mass of inertia 8 is a plate comprising a central cutout 18 in V, so that the mass 8 is distributed in a privileged manner in the vicinity of the edges 16 and 17 of the ski. It is possible to modify the distribution, and to accentuate the effect thus obtained, by modifying in the same way the thickness of the plate forming the mass of inertia 8, the thickness being reduced in the vicinity of the longitudinal axis II - II of the ski, the thickness being greater in the vicinity of the edges 16 and 17 of the ski.
  • FIGS. 7 and 8 an embodiment has been shown in which the additional mass of inertia before 8 of the ski consists of two half-masses 81 and 82, the first half-mass 81 being arranged along the edge 16 ski, the second half-mass 82 being disposed along the ski edge 17.
  • the ski according to the invention advantageously has a cellular structure, with a central core 19 of constant width. The core 19 is thus bordered, over part of its length, by the half-masses 81 and 82, as shown in FIG. 8.
  • the half-masses 81 and 82 are advantageously shaped to follow the inclined shape of the edges.
  • lateral inertia masses can be distributed in the vicinity of the front contact line 5.
  • the two lateral half-masses 81 and 82 are shown, similar to the half-masses of the modes of previous embodiments, but associated with two additional lateral auxiliary masses 83 and 84 arranged slightly behind the additional masses 81 and 82.
  • FIG. 10 shows an embodiment in which the rear additional inertia mass 9 consists of two lateral half inertia masses 91 and 92 disposed respectively in the vicinity of the edges 16 and 17 of the ski.
  • the additional masses may consist of lead plates or other heavy materials. They can be placed in housings provided for this purpose.
  • the housing of the additional masses can be carried out by any conventional machining means such as milling, routing, either in the central part 19 forming the core, or in the lateral parts called edges.
  • the additional inertia masses can be partially housed in housings provided in the core 19 and partially housed in the side edges of the ski.
  • additional inertia masses can be a composite material, combining the forming and adhesion qualities of a thermoplastic material with the density qualities of a metal such as lead, brass, tungsten.

Landscapes

  • Golf Clubs (AREA)
  • Toys (AREA)
  • Road Paving Structures (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP89117609A 1988-11-07 1989-09-23 Ski mit einem Schwingungsdämpfer auf dem Vorderteil Expired - Lifetime EP0367964B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89117609T ATE80053T1 (de) 1988-11-07 1989-09-23 Ski mit einem schwingungsdaempfer auf dem vorderteil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815724A FR2638648B1 (fr) 1988-11-07 1988-11-07 Ski muni de masses d'inertie avant
FR8815724 1988-11-07

Publications (3)

Publication Number Publication Date
EP0367964A1 true EP0367964A1 (de) 1990-05-16
EP0367964B1 EP0367964B1 (de) 1992-09-02
EP0367964B2 EP0367964B2 (de) 1995-07-19

Family

ID=9372462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117609A Expired - Lifetime EP0367964B2 (de) 1988-11-07 1989-09-23 Ski mit einem Schwingungsdämpfer auf dem Vorderteil

Country Status (5)

Country Link
EP (1) EP0367964B2 (de)
JP (1) JPH02177979A (de)
AT (1) ATE80053T1 (de)
DE (1) DE68902725T2 (de)
FR (1) FR2638648B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683733A1 (fr) * 1991-11-19 1993-05-21 Rossignol Sa Ski en forme, de section non rectangulaire.
EP0966992A1 (de) * 1998-06-25 1999-12-29 Skis Rossignol Sa Schneegleitbrett
FR2780295A1 (fr) * 1998-06-25 1999-12-31 Rossignol Sa Planche de glisse sur neige

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT516699A1 (de) 2014-12-16 2016-07-15 Fischer Sports Gmbh Tourenski

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT337581B (de) * 1974-11-25 1977-07-11 Werner Konradler Amann Langgestreckter gleitkorper mit aufgebogenem vorderen ende, insbesondere schi
DE2842196A1 (de) * 1978-09-28 1980-04-17 Maschf Augsburg Nuernberg Ag Ski
US4405149A (en) * 1980-02-21 1983-09-20 Skis Rossignol S.A. Ski with vibration-damping means
EP0102653A2 (de) * 1982-06-11 1984-03-14 Skis Dynastar Sa Mit einer Schwingungsdämpfungsvorrichtung ausgerüsteter Ski

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT337581B (de) * 1974-11-25 1977-07-11 Werner Konradler Amann Langgestreckter gleitkorper mit aufgebogenem vorderen ende, insbesondere schi
DE2842196A1 (de) * 1978-09-28 1980-04-17 Maschf Augsburg Nuernberg Ag Ski
US4405149A (en) * 1980-02-21 1983-09-20 Skis Rossignol S.A. Ski with vibration-damping means
EP0102653A2 (de) * 1982-06-11 1984-03-14 Skis Dynastar Sa Mit einer Schwingungsdämpfungsvorrichtung ausgerüsteter Ski

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683733A1 (fr) * 1991-11-19 1993-05-21 Rossignol Sa Ski en forme, de section non rectangulaire.
EP0543744A1 (de) * 1991-11-19 1993-05-26 Skis Rossignol S.A. Ski mit einem nicht-rechteckigen Durchschnitt
US5599036A (en) * 1991-11-19 1997-02-04 Skis Rossignol S.A. Shaped ski of non-rectangular cross section
US6237932B1 (en) 1998-06-05 2001-05-29 Skis Rossignol S.A. Board for gliding on snow
EP0966992A1 (de) * 1998-06-25 1999-12-29 Skis Rossignol Sa Schneegleitbrett
FR2780295A1 (fr) * 1998-06-25 1999-12-31 Rossignol Sa Planche de glisse sur neige
FR2780294A1 (fr) * 1998-06-25 1999-12-31 Rossignol Sa Planche de glisse sur neige

Also Published As

Publication number Publication date
DE68902725T2 (de) 1996-01-18
DE68902725D1 (de) 1992-10-08
FR2638648A1 (fr) 1990-05-11
ATE80053T1 (de) 1992-09-15
EP0367964B1 (de) 1992-09-02
JPH02177979A (ja) 1990-07-11
FR2638648B1 (fr) 1991-01-11
EP0367964B2 (de) 1995-07-19

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