EP0914846A2 - Appareil auxiliaire pour ski - Google Patents

Appareil auxiliaire pour ski Download PDF

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Publication number
EP0914846A2
EP0914846A2 EP98309164A EP98309164A EP0914846A2 EP 0914846 A2 EP0914846 A2 EP 0914846A2 EP 98309164 A EP98309164 A EP 98309164A EP 98309164 A EP98309164 A EP 98309164A EP 0914846 A2 EP0914846 A2 EP 0914846A2
Authority
EP
European Patent Office
Prior art keywords
ski
plate spring
elastic
plate
auxiliary apparatus
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.)
Withdrawn
Application number
EP98309164A
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German (de)
English (en)
Other versions
EP0914846A3 (fr
Inventor
Kenzo Nagamine
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0914846A2 publication Critical patent/EP0914846A2/fr
Publication of EP0914846A3 publication Critical patent/EP0914846A3/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/003—Non-swivel sole plate fixed on the ski

Definitions

  • This invention relates to improvements to an auxiliary apparatus for a ski of the European Patent Application No. 97305127.9 filed on 7 November 1997.
  • a skier usually skis on the snow surface with a slouch.
  • a ski boot is originally locked between a toe binding and a heel binding so as to maintain a safe posture of the skier and to determine a correct direction of the skiing.
  • an angle ⁇ 1 of the skier's knee shown in FIG. 9 is equal to an angle ⁇ 2 of that shown in FIG. 10).
  • the bottom surface of the ski plate 1 has been waxed to improve its gliding surface and to decrease resistance between the ski plate 1 and the snow surface.
  • FIGS. 11 and 12 another skier having soft knees can bend his knees to absorb shock and vibration delivered from the uneven snow surfaces.
  • the angle ⁇ 4 of the skier's knee shown in FIG. 12 is smaller that the angle ⁇ 3 of that shown in FIG. 11)
  • a running ski plate is usually subject to a composite vibration which includes a vertical curve vibration shown by a broken line (A) in FIG. 18 and a torsional vibration shown by a broken line (B) in FIG. 19.
  • a conventional vibration absorber for a snow ski can control or absorb the composite vibration of the ski 1 itself, but it cannot control the vibration acting on a skier's feet.
  • a longitudinal cavity 7 is formed in a central heart-wood plate 2 to locate at a ski boot 40, a vibration absorbing material 8 having a thin layer and an independent heart-wood element 9 having a shape corresponding to the cavity 7 is inserted into the cavity 7, and is integrally sandwiched between a top ski plate 4 and the central heart-wood plate 2 so that the thickness of the ski 1 inevitably becomes larger, thus making it difficult to generate a sufficient lift for the ski boots and also to maintain the strength of the ski plate.
  • the heel binding 20b is firmly fixed on the ski.
  • an auxiliary apparatus which comprises: a V-shaped elastic body having a lower elastic plate and an upper elastic plate, an auxiliary elastic ring, and a restraining member, said lower elastic plate being integrally provided on the ski plate, a rear free end portion of said upper elastic plate being vertically movable, said auxiliary elastic ring being provided (e.g. integrally) under the upper elastic plate to locate between the rear end portions of the lower and upper elastic plates, and said restraining member being integrally fixed on the ski plate to locate at a rear end portion of said lower elastic plate whereby vertical lift can be generated between an upper ski surface and a ski boot in order to obtain greater control and stability for a skier running on the uneven snow surfaces.
  • the invention provides an auxiliary apparatus for a snow ski which comprises a U-shaped elastic body having a first elastic plate spring and a second elastic plate spring, a restraining member, and an elastic ring said first elastic plate spring being integrally provided on a ski plate, a rear free end portion of said second elastic plate spring being vertically movable and said restraining member being integrally fixed on said ski plate to locate at a rear end portion of said first elastic plate spring, and said elastic ring being provided (e.g. integrally) underneath a lower surface of said second plate spring to locate within said restraining member whereby vertical lift can be generated between an upper ski surface and a ski boot in order to obtain greater control and stability for a skier running on an uneven snow surface.
  • the invention provides an auxiliary apparatus for a ski, comprising a lower longitudinal portion for attachment to a ski, an upper longitudinal portion, and a spring located between the upper and lower portions, said spring resiliently upwardly biasing the rear part of the upper longitudinal portion from the rear part of the lower longitudinal portion so that the rear parts of the upper and lower portions are spaced from one another, whereby in use the spacing is reducible against the resilient bias of the spring in response to an upward force exerted on the ski.
  • the invention provides an auxiliary apparatus which can be secured on the conventional ski plate without troublesome improvement therefor.
  • FIG. 1 a first embodiment of an auxiliary apparatus 10 provided on the ski plate 1.
  • the V-shaped elastic auxiliary apparatus 10 comprises a pair of lower and upper plate springs 12 and 14, the front portions 12a and 14a of which are integrally secured to each other, and a restraining member 16 provided on the ski plate 1 to locate at a ski boot 40 in such a way that narrowed rear end portions 12c and 14c are freely enclosed within the restraining member 16 to allow easy vertical oscillations of the lower and upper plate springs 12 and 14.
  • the lower plate spring 12 is slightly movable in a longitudinal direction along the ski plate 1.
  • FIGS. 3-4 showing the second auxiliary apparatus of this invention, an insert 18 is sandwiched integrally into between the top end portions 12a and 14a of the lower and upper plate springs 12 and 14.
  • both side portions of the lower and upper plate springs 12 and 14 are restricted so as to form narrowed portions 12c and 14c so that the rear end portions 12b and 14b can be freely inserted into the restraining member 16.
  • an elastic auxiliary apparatus 10 having a lower plate spring 12 and an upper plate spring 14 is secured to the ski plate 1 and positioned so as to extend between a toe binding 20a and a heel binding 20b so that a bottom surface near the heel binding 20b can be pushed upwardly to absorb the shock and vibration acting on a skier's feet from the snow surface.
  • resistance between the ski plate 1 and the snow surface can be decreased in order that a skier having rather stiff knees can ski on uneven snow surfaces with greater stability and at full speed.
  • the lower plate spring 12 is mounted on the upper surface of the ski plate 1 to locate the V shaped front portion of the elastic auxiliary apparatus 10 at the toe binding 20a so that the bottom surface near the heel of the ski boot 40 is pushed upwardly, and the upper plate spring 14 is made to produce elasticity in order to flex the ski plate 1 toward the snow surface.
  • the lower plate spring 12 is mounted on the ski plate at the toe binding 20a, and an auxiliary elastic ring 50 is integrally provided under the upper plate 14 to locate between the rear end portions of the lower and upper plate springs 12 and 14.
  • the elastic auxiliary apparatus 10 comprises a pair of lower and upper plate springs 12 and 14, their front end portions 12a and 14a being integrally combined with each other so as to produce elasticity making the other free end portions 12b and 14b flex relative to one another so as to separate them from each other.
  • the auxiliary elastic ring will also act to resiliently bias the free end portions 12b and 14b away from one another.
  • the V-shaped elastic auxiliary apparatus 10 comprises a restraining member 16 which is mounted on the ski plate 1.
  • the combined front portions 12a and 14a are secured on the ski plate 1 to locate at the toe binding 20a, and the restraining member 16 is provided on the ski plate 1 to be positioned at the heel binding 20b so that the narrowed rear end portion 12c of the lower plate is freely inserted into the restraining member 16 to allow longitudinal movement of the lower plate spring 12 relative to the ski.
  • the upper plate spring 14 is vertically restrained by the restraining member.
  • each of the lower and upper plate springs 12 and 14 is almost the same as that of the ski plate 1, and these plate springs have a sufficient rigidity to withstand torsion.
  • the binding 20 has a toe binding 20a and a heel binding 20b, four screw openings 14d are provided on the upper plate spring 14 to locate at the position of the toe binding 20a, four screw openings 18d are provided on an insert 18 at the corresponding positions 14d, and also four screw openings 12d are provided on the lower plate spring 12 at the position of the toe binding 20a.
  • a ski stopper 22 is provided on the heel binding 20b in a manner that the ski stopper 22 can rotate so as to direct its lower end portions 22a downwardly.
  • the position for securing the binding 20 is slightly higher than if no elastic ring were provided, but the ski 1 of the invention is designed in such a way that the lower end portions 22a of the ski stopper 22 can extend downwardly sufficiently to locate below a lower surface of the ski plate 1 when the ski plate 1 is disengaged accidentally from the ski boot 40, thus enabling to stop the ski plate 1 on the snow surface.
  • the upper plate spring 14 gives a force of bending the ski plate 1 upwardly at the front portion 14a of the upper plate spring 14 and when making contact with the restraining member 16 which acts as a fulcrum.
  • the lower plate spring 12 gives a force of bending the ski plate 1 downwardly at the front portion 12a of the lower plate spring 12 and with the rear portion 12b acting as a fulcrum.
  • a ceiling of the upper transverse portion 16b of the restraining member 16 is angled upwardly in the rear direction so that the rear end portion of the upper plate spring 14 may be moved without causing any trouble to the restraining member 16.
  • the width of the restraining member 16 is substantially the same as that of the upper surface of the ski plate 1.
  • the auxiliary elastic ring 50 provided between the rear end portions of the lower and upper plate springs 12 and 14 has a pair of openings 50a, 50a at an upper portion of the ring 50 to locate at both side portions which are slightly wider than the width of the upper transverse portion 16b of the restraining member 16.
  • a pair of screw openings 14e, 14e are longitudinally provided at a rear end portion of the upper plate spring 14 to locate at the corresponding portions of the openings 50a, 50a of the auxiliary elastic ring 50.
  • a flat elastic sheet such as rubber sheet 58 is integrally mounted on an upper surface of the upper plate spring 14 to locate between the screw openings 14e, 14e.
  • an upper portion of the elastic ring 50 is made into contact with a lower surface of the upper plate spring 14 to locate the screw openings 50a, 50a at the screw openings 14e, 14e, and a pair of set screws 52, 52 are screwed into the screw openings 14e, 14e and 50a, 50a with a pair of washers 54, 54 and nuts 56, 56 so that the elastic ring 50 is integrally provided at the lower surface of the upper plate spring 14, thus locating the elastic ring 50 in the restraining member 16 and also between the lower and upper plate springs 12 and 14.
  • shock and vibration by the skier's knees is assisted by the elastic ring 50 of the auxiliary apparatus 10 so that the skier whose muscular and physical strength has declined can ski on the rough snow surface easily, smoothly and at high speed.
  • the ski plate 1 When the skier is skiing down the rough snow surface, the ski plate 1 itself moves up and down along the snow surface, but the shock and vibration are absorbed by the elastic ring 50 of the auxiliary apparatus so as to restrain an up-and-down motion of the skier's body.
  • the width of the upper plate spring 14 is substantially the same as that of the inner length of the restraining member 16, transverse vibrations of the upper plate spring 14 are restrained by the restraining member 16.
  • both of the lower and upper plate springs 12 and 14 is substantially the same as that of the ski plate 1, and they are made of material having a high rigidity to torsion so that the lower and upper plate springs 12 and 14 are not twisted, thus enabling the skier to exhibit a desired excellent biting edge of the ski plate 1.
  • the auxiliary apparatus 10 is a plate spring which is curved at a mid portion into a U-shaped front portion 12a (or 14a) to form a lower plate spring 12 and an upper plate spring 14.
  • a plurality of screw springs 12d and 14d are provided in the straight portions of the lower and upper plate springs 12 and 14.
  • both of the side portions 12c and 14c adjacent the rear end portions 12b and 14b of the lower and upper plate springs 12 and 14 are transversely restricted so that the narrowed portions 12c and 14c may be freely inserted into the restraining member 16 provided at a position of the heel binding 20b.
  • the screw bolts 19 are inserted through the screw openings 14d and screwed into the screw openings 12d and 14d in order to secure the lower plate springs 12 to the upper plate springs 14.
  • a toe binding 20a is provided on the front portion of the upper plate spring 14, the lower plate spring 12 being integrally mounted on the upper surface of the ski plate 1.
  • the auxiliary elastic ring 50 is provided between the rear end portions of the lower and upper plate springs 12 and 14.
  • an upper portion of the elastic ring 50 is made into contact with a lower surface of the upper plate spring 14 to locate the screw openings 50a, 50a at the screw openings 14e, 14e, and a pair of set screws 52, 52 are screwed into the screw openings 14e, 14e and 50a, 50a with a pair of washers 54, 54 and nuts 56, 56 so that the elastic ring 50 is integrally provided at the lower surface of the upper plate spring 14, thus locating the elastic ring 50 in the restraining member 16 and also between the lower and upper plate springs 12 and 14.
  • the shock and vibration acting on the bottom face of the ski boot 40 from the snow surface can be absorbed by the auxiliary apparatus 10 having an elastic ring 50 which is mounted between the ski surface and the ski boot 40, extending assistance in the absorption of the shock and vibration by the soft knees of the skier and also to decrease the burden on the skier.
  • FIG. 13 It is shown in FIG. 13 that the skier equipped with the auxiliary apparatus 10 is skiing on the flat snow surface, while it is shown in FIG. 14 that he is skiing on the rough or uneven snow surface.
  • the skier equipped with the auxiliary apparatus 10 can ski on the flat or uneven snow surface, irrespective of his stiff or soft knees safely, smoothly and at high speed by a vertical lift generated between the upper ski surface and the bottom of the ski boot 40.
  • vertical lift can be generated between an upper ski surface and a ski boot 40 in order to obtain greater control and stability for a skier running on an uneven snow surface, and the skier can obtain the capacity of the skis to conform flexibly to the uneven snow surface.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Road Paving Structures (AREA)
EP98309164A 1997-11-10 1998-11-10 Appareil auxiliaire pour ski Withdrawn EP0914846A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP345692/97 1997-11-10
JP9345692A JPH11137765A (ja) 1997-11-10 1997-11-10 スキー用補助具
JP34569297 1997-11-10

Publications (2)

Publication Number Publication Date
EP0914846A2 true EP0914846A2 (fr) 1999-05-12
EP0914846A3 EP0914846A3 (fr) 2000-02-02

Family

ID=18378325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98309164A Withdrawn EP0914846A3 (fr) 1997-11-10 1998-11-10 Appareil auxiliaire pour ski

Country Status (2)

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EP (1) EP0914846A3 (fr)
JP (1) JPH11137765A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070348A1 (fr) * 2000-03-24 2001-09-27 Thibault Frederic Interface pour fixation de ski
FR2873590A1 (fr) * 2004-07-30 2006-02-03 Salomon Sa Ensemble de retenue d'une chaussure sur une planche de glisse, notamment un ski alpin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623318U (ja) 1992-06-30 1994-03-25 八木アンテナ株式会社 給電箱の防水構造
EP0819454A1 (fr) 1996-07-18 1998-01-21 Kenzo Nagamina Dispositif additionnel pour ski

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634748A1 (de) * 1976-01-20 1978-02-09 Hans Meyer Ski mit federbrett
DE3602364A1 (de) * 1986-01-27 1987-07-30 Meyer Hans Dipl Ing Fh Federbrett fuer einen ski
US5129668A (en) * 1990-09-28 1992-07-14 Leonard Hecht Ski boot binding mounting
WO1997012650A1 (fr) * 1995-10-01 1997-04-10 Kaj Gyr Systeme de suspension pour planche a neige

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623318U (ja) 1992-06-30 1994-03-25 八木アンテナ株式会社 給電箱の防水構造
EP0819454A1 (fr) 1996-07-18 1998-01-21 Kenzo Nagamina Dispositif additionnel pour ski

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070348A1 (fr) * 2000-03-24 2001-09-27 Thibault Frederic Interface pour fixation de ski
FR2873590A1 (fr) * 2004-07-30 2006-02-03 Salomon Sa Ensemble de retenue d'une chaussure sur une planche de glisse, notamment un ski alpin

Also Published As

Publication number Publication date
EP0914846A3 (fr) 2000-02-02
JPH11137765A (ja) 1999-05-25

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