EP0633803B1 - Ski de fond - Google Patents

Ski de fond Download PDF

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Publication number
EP0633803B1
EP0633803B1 EP93906365A EP93906365A EP0633803B1 EP 0633803 B1 EP0633803 B1 EP 0633803B1 EP 93906365 A EP93906365 A EP 93906365A EP 93906365 A EP93906365 A EP 93906365A EP 0633803 B1 EP0633803 B1 EP 0633803B1
Authority
EP
European Patent Office
Prior art keywords
ski
shovel
cross
country
arching
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
EP93906365A
Other languages
German (de)
English (en)
Other versions
EP0633803A1 (fr
Inventor
Walter Eder
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
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 Individual filed Critical Individual
Publication of EP0633803A1 publication Critical patent/EP0633803A1/fr
Application granted granted Critical
Publication of EP0633803B1 publication Critical patent/EP0633803B1/fr
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
    • A63C5/04—Structure of the surface thereof
    • A63C5/052—Structure of the surface thereof of the tips or rear ends

Definitions

  • the invention relates to a cross-country ski, with a ski shovel formed at the front end in the direction of travel, which, starting from the essentially flat tread area of the ski, is continuously curved upwards and decreases in width and which, at least in some areas, has a curvature running transversely to the direction of travel.
  • the simply curved design of the cross-country ski shovel also has the disadvantage that when the driving style is not concentrated, in particular on descents, there is a slight possibility of blending and thus of the risk of falling.
  • the present invention is therefore based on the object of reducing the shear effect of the cross-country ski shovel, thereby increasing the possible speed of a runner with the same amount of force and reducing the risk of blending and thus of a fall.
  • the curvature on both side edges of the ski shovel forms a lateral sliding surface which extends to the upper cover surface and exceeds the other ski thickness in the shovel area, the height of which in the longitudinal central region of the ski shovel corresponds at least approximately to the shovel width there and from there to the front and decreases behind continuously.
  • Such a double curvature of the tread in the area of the blade means that almost all tangential planes placed at the contact points of the tread enclose an angle unequal to 90 ° with an idealized vertical side wall.
  • Such a physical design of the cross-country ski shovel can be achieved either by attaching a suitable molded part, as described above, to a previously customary cross-country ski in a suitable manner, either permanently or removably, or by a suitable material thickness in the shovel area during the manufacture of the cross-country ski Forming is made possible.
  • Skis are known from FR-A-2 554 004 or also from DE-OS 25 56 650, which are not explicitly referred to or recognizable as cross-country skis; on the other hand, however, the disclosure of these writings is not restricted to alpine skiing or the like. Even with these skis, a curvature extending transversely to the direction of travel is provided on the underside of the ski shovel, which, however, is of a completely different type from the design and dimensioning as well as the purpose than the curvature in the subject of the present invention.
  • the shear resistance that occurs on the tread of a cross-country ski shovel in the event of contact with the side wall of the cross-country track is converted into a lower sliding resistance by the double curvature of the tread.
  • the reduced shearing effect also means that less snow is sheared into the track itself by the ski from the side wall of the track, which improves the grip of the cross-country ski at the moment of pushing off.
  • the physical design of the cross-country ski shovel body in the form described allows the track wall and the running surface of the shovel body to touch tangentially, an improved ski guidance in the track and thus contributes significantly to reducing the risk of falling.
  • Figure 1 shows that when the cross-country ski shovel is one of the prior art Technology corresponding to conventional cross-country skis touches the side wall of the cross-country track, the tangential plane in the points of contact of the running surface of the ski shovel includes an angle of approximately 90 ° with the side wall plane of the track.
  • the direction of travel, ie the thrust of the rotor (P1) and the pressure resistance of the track (P2) lie with the point of contact (L) and the force (R) resulting from pressure and back pressure in the plan on a straight line.
  • the figure also shows that the ski is lifted off track in the direction of travel, which ultimately leads to blending.
  • Figure 2 shows that the thrust of the runner (P1) with the resistance of the track wall (P2) at the point of contact (L) on the now double-curved blade body form a resulting force (R) which pushes the ski into the track.
  • the tangential plane at the point of contact forms an angle not equal to 90 ° with the track wall.
  • FIG. 3 shows the physical design of the cross-country ski shovel with a double curved tread when the shovel body is already produced in one piece with the ski during the production process of the ski.
  • FIG. 4 shows a cross-country ski shovel of a conventional cross-country ski, onto which the double-curved shovel body is subsequently glued or attached in an otherwise permanent form.
  • the running surface of the double-curved blade body must be adapted accordingly by grinding if necessary.
  • FIG. 5 cross-country ski shovel with a double-curved attached shovel body
  • Figure 6 cross-country ski shovel with a double curved plug-on shovel body.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Road Paving Structures (AREA)
  • Tires In General (AREA)

Abstract

Conformément à l'état de la technique, les spatules de skis de fond fabriquées jusqu'à maintenant comportent une courbure simple et forment de ce fait un angle de 90° environ par rapport aux parois de la trace. Lors du contact d'une spatule de ski de fond habituelle avec la trace, la résistance au cisaillement et la neige tombée dans la trace sous l'effet du cisaillement entraînent une diminution de la vitesse du fondeur. Selon l'invention, une courbure double de la spatule du ski de fond permet de transformer la résistance au cisaillement en une résistance au glissement nettement moindre, de réduire considérablement l'apport de neige dû au contact du ski avec les parois de la trace et d'augmenter de ce fait la vitesse virtuelle du fondeur. Le fait que les parois de la trace et que la surface de glissement à courbure double de la spatule soient en contact de manière tangentielle, entraîne une meilleure maîtrise du ski et une diminution sensible du risque de chute.

Claims (5)

  1. Ski de fond avec une spatule formée sur son extrémité antérieure, laquelle, à partir de la surface de glissement sensiblement plane du ski, est recourbée progressivement vers le haut et diminue en largeur et dont la face inférieure présente, au moins localement, une bombure transversale au sens de la marche, caractérisé en ce que la bombure forme au niveau des deux carres latérales de la spatule une surface de frottement latérale, continue jusqu'à la surface de recouvrement supérieure, dont l'épaisseur est supérieure à celle du reste du ski à la hauteur de la spatule, dont la hauteur dans cette section centrale longitudinale de la spatule correspond au moins à peu près à la largeur de celle-ci dans cette zone pour se réduire ensuite continuellement vers l'avant et l'arrière à partir de cette section.
  2. Ski de fond selon la revendication 1 caractérisé en ce que la bombure avec les surfaces de frottement latérales est formée d'un seul tenant avec la spatule du ski.
  3. Ski de fond selon la revendication 1 caractérisé en ce que la bombure avec les surfaces de frottement latérales est formée sur une pièce moulée, laquelle est rapportée sur la spatule d'un ski traditionnel pour y être de préférence collée pour une fixation durable.
  4. Ski de fond selon l'une des revendications 1 à 3 caractérisé en ce que les deux surfaces de frottement latérales se rejoignent par l'intermédiaire d'une bombure transversale continue située à la hauteur de la surface de glissement.
  5. Ski de fond selon la revendication 1 caractérisé en ce que les deux surfaces de frottement latérales sont formées sur des pièces moulées séparées, lesquelles sont rapportées sur les carres latérales de la spatule d'un ski traditionnel pour y être de préférence collées pour une fixation durable.
EP93906365A 1992-04-01 1993-03-31 Ski de fond Expired - Lifetime EP0633803B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT665/92 1992-04-01
AT0066592A AT401733B (de) 1992-04-01 1992-04-01 Langlaufski
PCT/AT1993/000060 WO1993019823A1 (fr) 1992-04-01 1993-03-31 Spatule de ski de fond

Publications (2)

Publication Number Publication Date
EP0633803A1 EP0633803A1 (fr) 1995-01-18
EP0633803B1 true EP0633803B1 (fr) 1997-12-03

Family

ID=3496590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93906365A Expired - Lifetime EP0633803B1 (fr) 1992-04-01 1993-03-31 Ski de fond

Country Status (4)

Country Link
EP (1) EP0633803B1 (fr)
AT (1) AT401733B (fr)
DE (1) DE59307790D1 (fr)
WO (1) WO1993019823A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH243363A (de) * 1941-02-17 1946-07-15 Sachers Fritz Ski.
DE2556650A1 (de) * 1975-12-16 1977-06-23 Voelkl Ohg Franz Ski
DE2638928A1 (de) * 1976-08-28 1978-03-02 Finkenauer Werner Skispitze mit spoiler
FR2544210B1 (fr) * 1983-04-12 1985-08-09 Rossignol Sa Club Rossignol Sk Ski
FR2554004B1 (fr) * 1983-11-02 1986-05-30 Goujon Gerard Dispositif pour ameliorer le comportement et les performances des engins glissant sur la neige et sur l'eau
FR2589072B1 (fr) * 1985-10-28 1988-08-26 Salomon Sa Ski de fond
AT389452B (de) * 1986-01-10 1989-12-11 Head Sportgeraete Gmbh Ski
FR2594346B1 (fr) * 1986-02-19 1988-09-30 Rossignol Sa Ski de fond
FR2662092B1 (fr) * 1990-05-17 1992-08-28 Salomon Sa Ski.

Also Published As

Publication number Publication date
DE59307790D1 (de) 1998-01-15
AT401733B (de) 1996-11-25
ATA66592A (de) 1996-04-15
EP0633803A1 (fr) 1995-01-18
WO1993019823A1 (fr) 1993-10-14

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