WO1999065577A1 - Carre de ski dentelee - Google Patents

Carre de ski dentelee Download PDF

Info

Publication number
WO1999065577A1
WO1999065577A1 PCT/US1999/011680 US9911680W WO9965577A1 WO 1999065577 A1 WO1999065577 A1 WO 1999065577A1 US 9911680 W US9911680 W US 9911680W WO 9965577 A1 WO9965577 A1 WO 9965577A1
Authority
WO
WIPO (PCT)
Prior art keywords
ski
edge
serrations
range
snow
Prior art date
Application number
PCT/US1999/011680
Other languages
English (en)
Inventor
Vincent E. Alvarez
Original Assignee
Alvarez Vincent E
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 Alvarez Vincent E filed Critical Alvarez Vincent E
Publication of WO1999065577A1 publication Critical patent/WO1999065577A1/fr

Links

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
    • A63C5/048—Structure of the surface thereof of the edges

Definitions

  • the present invention relates generally to the field of ski members for traveling over a snow and/or ice covered surface. More particularly, the invention relates to an improved outer edge for ski members, such as skis and snowboards.
  • Snow skiing and snow boarding have, for many years, been extremely popular with a wide variety of participants. Despite this popularity, however, skiing and snow boarding remain relatively difficult sports to learn and master.
  • the ability of the participant to traverse down a slope covered in snow and ice, or a combination thereof, is dependent on the shape of the ski member (e.g., ski or snowboard) and the metal edge that envelopes the body of the ski member. By applying pressure to one side of the edge or the other, the participant can control their speed and degree of turn.
  • the ski member e.g., ski or snowboard
  • the metal edge that envelopes the body of the ski member.
  • the metal edge is typically comprised of a metal strip which is wrapped around the perimeter of the ski member.
  • the metal strip includes a sharp "cutting" edge adapted to cut into the surface of the snow/ice to aid in turning (and stopping) of the ski member.
  • ski members Various techniques have been employed to enhance the turning characteristics of ski members. Such techniques typically comprise design modifications of the ski member body. Illustrative are the ski designs disclosed in U.S. Pat. Nos. 3,212,787; 4,343,485 and 4,705,291.
  • a ski design is disclosed wherein the ski defines a relatively thick center portion above which a skier's boot is supported and a forwardly extending thinner more flexible portion having a plurality of upwardly angled facets and terminating in a pointed shovel portion.
  • the angle between the running surface and the facets increases as the facets approach the upwardly turned shovel portion.
  • the tail portion of the ski also tapers with the distance from the skier's boot.
  • a ski design is disclosed wherein the bottom surface of the ski is curved upwardly in either direction from the location of the skier's boot and a curved shovel portion and curved tail portion are formed at the front and rear of the ski.
  • the side camber configuration of the ski defines an hour glass shape thinner at the region of the skier's boot and larger at the tail and shovel sections.
  • a ski design wherein a relatively rigid ski is formed to define a generally planar upper surface supporting a ski boot and a convex front to rear curved undersurface.
  • the ski has a maximum effective width substantially in-line with the pivot point over which the skier's weight is to be centered.
  • the ski assumes a narrower effective width both forward and rearward of the pivot point and an intermediate effective width closer to the front and rear respectively.
  • an object of the present invention to provide a readily variable ski edge which increases the gripping action when turning or stopping, particularly on hard snow or ice.
  • the serrated ski edge in accordance with this invention comprises an edge member having a bottom surface and outer wall forming a substantially continuous cutting edge at the intersection thereof, and a plurality of serrations disposed on the outer wall proximate the cutting edge.
  • the advantages of this invention include (i) a ski edge which enhances the gripping action or "bite" during turning or stopping; (ii) a ski edge having a cutting edge which requires less machine sharpening; (iii) a ski edge which readily accommodates the varying skill levels of participants; (iv) a ski edge which may be readily customized to accommodate slope and/or surface conditions; and (v) a ski edge which may be customized to accommodate a variety of snow sports (i.e., downhill or slalom racing). Additional advantages of the invention are that it assists novice participants in learning to ski by reducing side slip thereby preventing falls at slow and high speeds, and enhances the performance (i.e., speed and control) of advanced participants during competitive events.
  • FIGURE 1 is a top plan view of a ski constructed in accordance with the present invention
  • FIGURE 2 is a cross-sectional view of the ski shown in FIGURE 1 along lines A-A according to the invention
  • FIGURE 3 is a partial side view of the ski according to the invention.
  • FIGURE 4 is a partial perspective cross-sectional view of the ski according to the invention.
  • FIGURE 5 is a partial front plan view of the ski edge and snow interface illustrating the shear zones according to the invention.
  • the serrated ski edge of the present invention substantially reduces or eliminates the disadvantages and shortcomings associated with prior art techniques.
  • the unique ski edge may be employed on a variety of ski members designed for traversing a snow and/or ice covered surface.
  • ski member it is meant to mean a device employed to traverse snow or ice, or a combination thereof, such as skis, snowboards, sleds, skates, etc.
  • skis snowboards, sleds, skates, etc.
  • the unique ski edge will be described herein in connection with a ski.
  • a ski constructed in accordance with the present invention and generally referenced by numeral 10.
  • the ski 10 includes a contact (or turning) zone T z , a tail portion 12 extending rearwardly from the contact zone T z , and a tip portion 14 extending upwardly from the contact zone T z .
  • a conventional boot (not shown) is received upon the top surface 15 of the ski 10 and secured thereto utilizing a pair of conventional bindings 16 and 18.
  • the ski 10 further includes an edge member 20 which preferably envelopes the body of the ski 10. Separate edge members may, however, alternatively be employed.
  • the edge member 20 is preferably fabricated out of stainless steel or like material.
  • the edge member 20 includes a plurality of serrations 24 disposed on the outer wall 22 thereof (see Fig. 3).
  • the serrations 24 provide (i) an optimum shear condition which reduces the frictional forces between the ski edge and mating surface (i.e., snow and/or ice) and, hence, increases speed and control of the ski and (ii) a sharper cutting edge which retains its integrity (i.e., sharpness) for a much longer period of time by virtue of the self-sharpening characteristic of the serrations 24.
  • the edge member 20 includes a bottom surface 21 and an outer wall 22 forming a cutting edge 27 at the intersection thereof.
  • a plurality of serrations 24 Disposed on the outer wall 22 of the edge member 20 proximate the cutting edge 27 is a plurality of serrations 24.
  • the serrations 24 are disposed on a portion of the edge member 20 coincident with the contact zone T z .
  • the serrations 24 are disposed proximate the contact zone T z .
  • the serrations 24 are employed throughout the length of the edge member 20.
  • each serration 24 has (i) a radius (r) in the range of 0.2 in. to 0.3 in., preferably 0.25 in., (ii) a depth (d) in the range of 0.006 in. to 0.010 in., preferably 0.008 in., and (iii) an included angle ⁇ in the range of 1° degree to 10°, preferably 8° (see Fig. 2).
  • the serrations 24 further have a pitch (p) in the range of 0.120 in. to 0.130 in., preferably 0.125 in..
  • each serration 24 further includes a shear zone 25 defined by the noted parameters r, d, ⁇ .
  • a shear zone 25 defined by the noted parameters r, d, ⁇ .
  • air is entrapped within the shear zone (or recess) 25.
  • the entrapped air provides an optimum shear condition which reduces the frictional forces at the metal edge/snow interface 27 and enhances the speed, edge "bite" and, hence, control of the ski.
  • the noted serrations 24 could thus be employed in a variety of devices to achieve the above described optimum shear condition. Such devices include, but are not limited to, cutting blades and the bows of water vessels.
  • the noted serrations 24, having the preferred parameters r, d, ⁇ significantly improve the turning and stopping characteristics of ski members and provides a self-sharpening cutting edge which maintains its integrity over a longer period of time.
  • Applicants have further found that increasing or decreasing the noted parameters r, d, ⁇ , will change the amount of edge "bite" to accommodate varying skill levels and surface conditions.
  • a ski edge which requires less machine sharpening (i) a ski edge which readily accommodates the varying skill levels of the participants; (iii) a ski edge which may be readily customized to accommodate slope and/or surface conditions; and (iv) a ski edge which may be customized to accommodate a variety of snow and/or ice sports (i.e., downhill or slalom racing, ice skating, tobogganing).
  • An additional advantage of the invention is that it assists novice participants in learning to ski by reducing side slip thereby preventing falls at slow as well as high speeds.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Carre (20) pour élément de ski (10), présentant une surface de base (21) et une paroi externe (22) formant entre elles une arête coupante sensiblement continue (27), et une pluralité de striations (24) prévues sur la surface externe (22) fournissant un meilleur contrôle et une meilleure prise de la carre en virage et en arrêt, en particulier sur neige durcie ou sur glace. Les striations (24) réduisent en outre les forces de friction à l'interface carre/neige (27) et fournissent une arête coupante plus affilée (27) qui maintient sa prise ou son aptitude à 'mordre' pendant une longue durée.
PCT/US1999/011680 1998-06-18 1999-05-26 Carre de ski dentelee WO1999065577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10014898A 1998-06-18 1998-06-18
US09/100,148 1998-06-18

Publications (1)

Publication Number Publication Date
WO1999065577A1 true WO1999065577A1 (fr) 1999-12-23

Family

ID=22278326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/011680 WO1999065577A1 (fr) 1998-06-18 1999-05-26 Carre de ski dentelee

Country Status (1)

Country Link
WO (1) WO1999065577A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063728A (en) * 1960-05-05 1962-11-13 Albert S Patterson Ski attachment
US4906016A (en) * 1987-07-28 1990-03-06 Varan Cyrus O Ski with increased toe pinning ability

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063728A (en) * 1960-05-05 1962-11-13 Albert S Patterson Ski attachment
US4906016A (en) * 1987-07-28 1990-03-06 Varan Cyrus O Ski with increased toe pinning ability

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