EP1058573B1 - Snowboard mit geometrischer kontrolle der torsion und der biegsamkeit - Google Patents

Snowboard mit geometrischer kontrolle der torsion und der biegsamkeit Download PDF

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Publication number
EP1058573B1
EP1058573B1 EP99904499A EP99904499A EP1058573B1 EP 1058573 B1 EP1058573 B1 EP 1058573B1 EP 99904499 A EP99904499 A EP 99904499A EP 99904499 A EP99904499 A EP 99904499A EP 1058573 B1 EP1058573 B1 EP 1058573B1
Authority
EP
European Patent Office
Prior art keywords
ski
raised profile
profile area
ski board
center
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
Application number
EP99904499A
Other languages
English (en)
French (fr)
Other versions
EP1058573A1 (de
Inventor
William B. Hall
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.)
K2 Corp
Original Assignee
K2 Corp
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Filing date
Publication date
Application filed by K2 Corp filed Critical K2 Corp
Publication of EP1058573A1 publication Critical patent/EP1058573A1/de
Application granted granted Critical
Publication of EP1058573B1 publication Critical patent/EP1058573B1/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
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • 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
    • A63C5/03—Mono skis; Snowboards
    • 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
    • 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

  • This invention relates to short skis, also referred to as "ski boards”.
  • skis are used with conventional downhill ski boots, and are produced in accordance with traditional ski manufacturing techniques.
  • EP-A-546309 discloses a ski which has a longitudinally central raised profile with lateral elongate reduced thickness areas.
  • the thickness of the central raised profile has its maximum in the binding region of the ski and decreases towards the ends of the ski while the width of the ski has its minimum in the binding area and its maximum near to the ends of the ski. Accordingly, the stiffness of the binding region is high whereas flexibility is high in the end portions of the ski.
  • ski boards typically have a length of 80-90 cm.
  • Currently available ski boards also have a flat upper surface and a thickness that tapers uniformly from the center to both the tip and the tail, similar to a conventional downhill ski.
  • ski boards A person skiing on ski boards uses a traditional downhill skiing technique. However, currently available ski boards do not track well, but rather skid on the snow, making it difficult to hold an edge and maintain a desired level of control.
  • the present invention provides an improved ski board that is more stable and easy to use.
  • the ski board has a body provided with a first end region and a second end region on either side of a center region.
  • the top surface of the first end region is contoured to have a first raised profile area extending from proximate the tip of the body towards the center region along a longitudinal axis of the body.
  • a first and second concave area extend laterally from opposite sides of the raised profile area to opposite edges of the body.
  • the top surface of the second end region is contoured to have a raised profile area extending from proximate the tail of the body towards the center region along the longitudinal axis of the body. Concave areas extend laterally from opposite sides of the raised profile area to the edges of the body.
  • the ski is stiff along its longitudinal axis, but is torsionally soft on opposite lateral sides of the longitudinal stiff region, both in the first and second end regions.
  • the ski therefore is allowed to twist around its longitudinal axis, thereby increasing contact between the edges of the ski and the snow, which in turn provides stability and more control.
  • a ski board 10 is provided in accordance with a preferred embodiment of the present invention with a body 11 having a first end region 12 and a second end region 13 disposed longitudinally on opposite sides of a center region 14.
  • the center region 14 is adapted to receive one of several conventional boot bindings, including a fixed binding, also known as a plate binding, a standard releasable ski binding, and a step-in snowboard binding.
  • the ski board 10 may therefore be used with conventional downhill ski boots, and stiff or soft snowboard boots, depending on the type of binding selected.
  • the ski board 10 is no longer than 90cm, allowing it to be safely used with a fixed binding.
  • the top surface 15 of the first end region 12 is contoured to have a first raised profile area 16 that extends substantially from a first end or tip 17 of body 11 along a longitudinal axis 18 towards the center region 14.
  • the first raised profile area 16 tapers in width midway between the center region 14 and the tip 17, such that-the first raised profile area 16 has a substantially hourglass shape.
  • the first raised profile area 16 extends from the center region 14 to proximate the tip 17, but is displaced laterally from the longitudinal axis towards either a first edge 21 or a second edge 22.
  • the first raised profile area 16 may have a substantially constant width, extending straight from the center region 14 toward the tip 17, either along or laterally displaced from the longitudinal axis.
  • a first concave area 19 and a second concave area 20 extend laterally from opposite sides of the first raised profile area 16 to the first edge 21 and second edge 22, respectively. Beyond the transition area between the first raised profile area 16 and the concave areas 19 and 20, the concave areas 19 and 20 have a constant thickness. In this manner, the first end region 12 has a stiff central portion coinciding with the first raised profile area 16, and a first and second torsionally soft portion coinciding with the first and second concave areas. Furthermore, in a preferred embodiment, the first raised profile area 16 substantially spans the tip 17, such that the first and second concave areas 19, 20 are arcuate and do not extend to the tip 17.
  • the top surface 23 of the second end region 13 has a second raised profile area 24 extending substantially from a second end or tail 25 along the longitudinal axis 18 towards the center region 14.
  • the tail 25 is more blunt than the tip 17.
  • the second raised profile area 24 tapers in width midway between the center region 14 and the tail 25, such that the second raised profile area 24 has a substantially hourglass configuration.
  • the second raised profile area 24 extends from the center region 14 to proximate the tail 25, but is displaced laterally from the longitudinal axis towards either the first edge 21 or the second edge 22.
  • the second raised profile area 24 may have a substantially constant width, extending straight from the center region 14 toward the tail 25, either along or laterally displaced from the longitudinal axis.
  • both the first end region 12 and second end region 13 of the ski board 10 are contoured in a similar manner, alternatively, they may be contoured differently, or only one of the first and second end regions may be contoured.
  • a third concave area 26 and a fourth concave area 27 extend laterally from opposite sides of the second raised profile area 24 to first edge 21 and second edge 22, respectively. Beyond the transition area between the second raised profile area 24 and the concave areas 26 and 27, the concave areas 26 and 27 have a constant thickness.
  • the second raised profile area substantially spans the tail 25, such that the third and fourth concave areas 26, 27 are substantially arcuate.
  • the second end region 13 is provided with a second stiff central portion coinciding with the second raised profile area 24, and with a third and fourth torsionally soft portion coinciding with the third and fourth concave areas.
  • the center region 14 is lower than the first and second raised profile areas, but is still higher than the concave areas. Alternatively, the center region 14 may be level with the first and second raised profile areas.
  • the ski board 10 is stiff along the longitudinal axis 18, but is torsionally soft on opposite lateral sides of the longitudinal stiff region, both in the first end region 12 and second end region 13.
  • the ski therefore is allowed to twist or flex a predetermined degree evenly around the longitudinal axis, thereby increasing contact between the edges 21 and 22 of the ski and the snow, which in provides better stability. It is believed that preferred results are achieved when the torsional stiffness of the ski board 10 is 10-12°, and more preferably, 12°, according to ASTM standard F779 with a moment of 17.8 Nm (13.125 foot-pound).
  • a ski board provided in accordance with a preferred embodiment of the present invention therefore flexes into a smooth curve, while maintaining fore/aft stability.
  • ski boards In contrast, most currently available ski boards have a substantially flat top surface resulting in a stiffer construction both longitudinally and torsionally. Due to this combined stiffness, it is therefore believed that a conventional ski board applies most of its load at the contact points, which are the points on the edges at the largest width in the tip and at the largest width of the tail. Conventional ski boards, therefore, do not flex into a smooth curve, and do not utilize the full edge of the ski in turning, thereby resulting in decreased stability.
  • the thickness 28 of the ski board 10 increases longitudinally from the tip 17 toward the center region 14 and decreases in thickness longitudinally from the center region 14 to the tail 25.
  • This geometry together with the contours described above, are configured to provide the board with a selected longitudinal or bending stiffness such that the center region deflects substantially, 2,5cm (1 inch) when 400-490N (90-110 pounds of force) or less are applied to the center region 14 of the body 11, when the ski is supported at its fore and aft contact points.
  • conventional ski boards have a bending stiffness of 130-220 pounds, using the same standard of measurement. The stiff central portions of the ski board therefore provide a rigid, yet spring-like comfort to the ski.
  • the ski board 10 may be produced in a variety of ways, in a preferred embodiment, the raised profile areas and the concave areas are Built into the core construction.
  • the core is either formed by a shaped unitary core, or alternatively, by laminates of core material, to achieve the desired contour.
  • the core is then suitably sandwiched between glass load-carrying layers, a cap and base:

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Soil Working Implements (AREA)
  • Toys (AREA)

Claims (7)

  1. Skiboard (10), mit einem länglichen Körper (11), der einen mittleren Bindungsbereich (14), ein erstes und ein zweites Ende (17, 25), eine erste und eine zweite Längskante (21, 22) und eine Oberseite (12, 23) definiert,
    dadurch gekennzeichnet, dass die Oberseite (12, 23) des Körpers (11) profiliert ist, um einen ersten erhöhten Profilbereich (16), der sich von nahe wenigstens eines des ersten und des zweiten Eindes (17, 25) des Körpers zu dem mittleren Bindungsbereich (14) erstreckt, und längliche erste und zweite Abschnitte geringerer Dicke des Körpers (11) angrenzend an die crstc bzw. die zweite Längskante (21, 22) zwischen wenigstens einem des ersten und des zweiten Endes (17, 25) und dem mittleren Bindungsbereich (14) zu definieren, wobei der Körper (11) eine Gesamtlänge von dem ersten Ende (17) zu dem zweiten Ende (25) von nicht länger als 90 cm definiert, wobei der Körper (11) entlang einer Längsachse (18) des Körpers steif ist und an abgewandten seitlichen Seiten davon relativ drehweich ist.
  2. Skiboard nach Anspruch 1,
    dadurch gekennzeichnet, dass der Körper (11) vordere und hintere Kontaktpunkte definiert und eine Längssteifheit derart besitzt, dass sich der Mittelbereich (14) im wesentlichen um 2,5 cm (1 Inch) wölbt, wenn 400-490 N (90-110 Pfund) oder weniger auf den Mittelbereich (14) des Körpers ausgeübt werden und der Ski an seinen vorderen und hinteren Kontaktpunkten gestützt wird.
  3. Skiboard nach Anspruch 1,
    dadurch gekennzeichnet, dass der Körper (11) eine Drehsteifheit besitzt, die ihn um mehr als 10° verdrehen lässt.
  4. Skiboard nach Anspruch 1,
    dadurch gekennzeichnet, dass sich der erste erhöhte Profilbereich (16) von dem ersten Ende (12) des Körpers erstreckt, und dass die Oberseite einen zweiten erhöhten Profilbereich (24) definiert, welcher sich von nahe des zweiten Endes (13) des Körpers (11) zu dem mittleren Bindungsbereich (14) erstreckt.
  5. Skiboard nach Anspruch 4,
    dadurch gekennzeichnet, dass sich eine Breite des ersten erhöhten Profilbereichs (16) zwischen dem mittleren Bindungsbereich (14) und dem ersten Ende (17) des Körpers (11) verjüngt, sodass der erste erhöhte Profilbereich (16) eine im wesentlichen Sanduhr Form besitzt, und dass sich eine Breite des zweiten erhöhten Profilbereichs 24 zwischen dem Mittelbereich (14) und dem zweiten Ende (25) des Körpers (11) verjüngt, sodass der zweite erhöhte Profilbereich (24) eine im wesentlichen Sanduhr-Form besitzt.
  6. Skiboard nach Anspruch 4,
    dadurch gekennzeichnet, dass der erste erhöhte Profilbereich (16) und der zweite erhöhte Profilbereich (24) im wesentlichen entlang einer Längsachse (18) des Körpers (11) verlaufen.
  7. Skiboard nach Anspruch 4,
    dadurch gekennzeichnet, dass die Oberseite des Körpers einen ersten und einen zweiten konkaven Bereich (19, 20), welche sich seitlich an abgewandten Seiten des ersten erhöhten Profilbereichs (16) zu der ersten bzw. der zweiten Längskante (21, 22) erstrecken, und einen dritten und einen vierten konkaven Bereich (26, 27), welche sich seitlich von abgewandten Seiten des zweiten erhöhten Profilbereichs (24) zu der ersten bzw. zweiten Längskante (21, 22) erstrecken, definiert.
EP99904499A 1998-02-24 1999-02-01 Snowboard mit geometrischer kontrolle der torsion und der biegsamkeit Expired - Lifetime EP1058573B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US28420 1987-03-18
US2842098A 1998-02-24 1998-02-24
PCT/US1999/002093 WO1999043397A1 (en) 1998-02-24 1999-02-01 Ski board with geometrically controlled torsion and flex

Publications (2)

Publication Number Publication Date
EP1058573A1 EP1058573A1 (de) 2000-12-13
EP1058573B1 true EP1058573B1 (de) 2003-06-04

Family

ID=21843354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99904499A Expired - Lifetime EP1058573B1 (de) 1998-02-24 1999-02-01 Snowboard mit geometrischer kontrolle der torsion und der biegsamkeit

Country Status (5)

Country Link
EP (1) EP1058573B1 (de)
JP (1) JP2002504410A (de)
AT (1) ATE242025T1 (de)
DE (1) DE69908563T2 (de)
WO (1) WO1999043397A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7219916B2 (en) 2004-10-07 2007-05-22 Olson Mark A Snowboard
US9138629B2 (en) 2013-03-15 2015-09-22 Brian Rosenberger Rib-stiffened sports board
US9522318B1 (en) 2013-03-15 2016-12-20 Brian Rosenberger Rib-stiffened sports board

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520529B1 (en) 1999-09-29 2003-02-18 K-2 Corporation Integrated modular glide board
US6612605B2 (en) 1999-09-29 2003-09-02 K-2 Corporation Integrated modular glide board
FR2804335B1 (fr) * 2000-01-28 2002-04-19 Salomon Sa Planche de glisse destinee a la pratique du surf sur neige
DE20204651U1 (de) 2002-03-18 2003-08-07 Peeters Bernd Vorrichtung zum Schutz gegen unauthorisierte Benutzung von Software
DE102013100110A1 (de) * 2013-01-08 2014-07-10 Völkl Sports GmbH & Co. KG Schneegleitbrett

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684886B1 (fr) * 1991-12-13 1994-04-01 Salomon Sa Ski a face superieure de largeur variable.
US5782482A (en) * 1996-01-30 1998-07-21 K-2 Corporation Snowboard and method of construction
DE19652779A1 (de) * 1996-12-19 1998-06-25 Marker Deutschland Gmbh Snowboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7219916B2 (en) 2004-10-07 2007-05-22 Olson Mark A Snowboard
US9138629B2 (en) 2013-03-15 2015-09-22 Brian Rosenberger Rib-stiffened sports board
US9522318B1 (en) 2013-03-15 2016-12-20 Brian Rosenberger Rib-stiffened sports board

Also Published As

Publication number Publication date
EP1058573A1 (de) 2000-12-13
DE69908563D1 (de) 2003-07-10
WO1999043397A1 (en) 1999-09-02
DE69908563T2 (de) 2003-12-11
ATE242025T1 (de) 2003-06-15
JP2002504410A (ja) 2002-02-12

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