EP0493452B1 - Ski large et court et fixation - Google Patents

Ski large et court et fixation Download PDF

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Publication number
EP0493452B1
EP0493452B1 EP90914042A EP90914042A EP0493452B1 EP 0493452 B1 EP0493452 B1 EP 0493452B1 EP 90914042 A EP90914042 A EP 90914042A EP 90914042 A EP90914042 A EP 90914042A EP 0493452 B1 EP0493452 B1 EP 0493452B1
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EP
European Patent Office
Prior art keywords
ski
binding plate
side edges
binding
plate
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
EP90914042A
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German (de)
English (en)
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EP0493452A1 (fr
Inventor
Robert L. Sutherland
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Individual
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Individual
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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
    • A63C5/00—Skis or snowboards
    • A63C5/025—Short skis
    • 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
    • A63C9/005—Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski

Definitions

  • This invention relates to a ski, and more particularly, to a ski which may be used in a variety of snow conditions and more particularly, soft snow.
  • Skiing has become an extremely popular sport for people of all ages.
  • ski manufacturers design and construct skis which are optimised to accommodate skiing on these groomed hills.
  • the present invention provides a ski which has the characteristic of facilitating maneuvers in the sport of skiing, including the turns of skiing downhill, the stepping movements required when walking on the flat, and the stepping movements required when climbing uphill with climbing skins or wax.
  • the ski of the present invention is designed to remain closer to the surface of soft snow when skiing downhill such that it will float, and plane, to allow foot steering. The tip of the ski will tend to remain out of the soft snow.
  • the ski of the present design facilitates turning and stepping movements by decreasing the ski length, increasing the ski width, and also preferable by providing for a variation of the skier's centre of gravity in the fore and aft directions on the ski.
  • the theory behind the invention is that in soft snow, when skiing downhill in order to be maneuverable, a ski must be short, yet it must still tend to stay near the surface, with the ski tips tending to remain out of the snow so as to in effect plane. The ski therefore, must not only be short, but must also have a large area for floatation.
  • the relatively thick sliding rail devices of the previous art act like "I" beams which will not flex with the ski. Known devices, therefore all make the ski much too stiff, or alternatively the fixation screws pull out. Such devices are much too heavy for ski touring, whereas the ski of the present invention, according to a specific embodiment thereof, utilizes the metal top sheet of the ski itself as the sliding rail, in order to make the device lighter, and to locate the boot flat on the ski and to make the device neater and more cosmetically acceptable.
  • Another aspect of a specific embodiment of the present invention, as compared to the prior art, is that the adjustment is accomplished extremely rapidly, and reliably, and with not tendency of freeze up.
  • the present invention seeks to provide a deep snow ski which satisfies a longstanding need for a multipurpose or touring ski which can be used for cross-country skiing and yet will still allow the enjoyment of skiing downhill without resorting to the unnatural, uncomfortable, awkward, difficult, and dangerous maneuver referred to as telemarking.
  • a pair of short snow skis as set forth in claims 1 or 6 is provided.
  • the ski area is preferably in the range from about 1390 cm2 to about 2485 cm2.
  • a ski and binding plate combination as set forth in claim 7 is provided.
  • one aspect of the present invention resides in a ski which is shorter in length than normally used by downhill skiers.
  • the ski of the present invention provides a sufficiently large snow engaging surface that floatation and planing is obtainable in soft snow and the skier is able to foot steer. Such action is not possible with skis which are commonly available and are longer and narrower than the skis of the present invention.
  • skis having the lengths, widths and snow engaging or bottom surface areas identified as A were found available in a well stocked ski shop. It will be noted that for the lengths of 170 to 220 cm, the width increases generally with length, and accordingly the areas increase continuously from the areas of 1530 cm2 for the shortest ski of 170 cm to 1980 cm2 for the longest ski of 220 cm.
  • the preferred surface area of the ski of the present invention is approximately 1800 cm2 and for lengths varying from 140 cm to a maximum of 170 cm, the preferred width therefore decreases from about 13 cm to about 10 1/2 cms as shown at B in Table I. It is with the combination of dimensions shown for the skis of group B in Table I that a 75 Kg skier obtains the above described skiing characteristics.
  • Figure 1 is a graph having line D, which is a plotting of the width v. length of the parameters of group B for a ski for use by a skier weighing 75 Kg (see Table III).
  • line D which is a plotting of the width v. length of the parameters of group B for a ski for use by a skier weighing 75 Kg (see Table III).
  • one line D results in widening the ski while at the same time shortening it, improves maneuverability, but an excessive increase in width increases side slippage, increases the risk of ankle twist and generally requires skiing with the feet uncomfortably separated.
  • Movement, down along the line D, as denoted by arrow G does have the advantage of improving tracking or stability.
  • Table II illustrates a break-down of skiers into weight groups of 45 to 65 Kg, 65 to 85 Kg, 85 to 105 Kg and 105 to 125 Kg which are logical intervals and appear to in total cover the weights of substantially all persons for which this type of ski would be marketed. For the sake of calculations it appears to be sufficiently accurate to work on the bases of an average weight of 55 Kg, 75 Kg, 95 Kg and 115 Kg for the four weight groups. Testing indicates that the approximate optimum snow engaging surface required to provide the above described skiing characteristics for the four specified weight groups are 1600 cm2, 1800 cm2, 2000 cm2 and 2200 cm2, respectively but a variation of about ⁇ 13% of these values, are within an operable design.
  • Table II indicates the ski surface area for the Weight Groups group of 45 to 65 Kgs, for example, has the range of 1600 ⁇ 13%, which equals approximately 1390 cm2 to 1810 cm2.
  • the ranges for the other three groups are 1550 cm2 to 2035 cm2, 1740 cm2 to 2260 cm2, and 1915 cm2 to 2485 cm2, respectively.
  • the optimum surface area per kilogram of skier weight using the optimum ski surface A divided by the average weight AWt for each group i.e. provides a factor for the preferred surface Areas Per Kg of Skier's Wt factor, which would be approximately 29, i.e. for the ski designed for skiers of the first group.
  • This factor for the other three groups is approximately 24, 21 and 19, respectively.
  • the calculate of gives a range for the first groups, for example of 25 to 33 cm2/Kg.
  • factors F i.e. area of ski (cm) per Kg of skier weight, which have been established for the different weight groups
  • the range of lengths 130 cm to 160 cm for the weight group of 45 to 65, 140 cm to 170 cm for the weight group of 65 to 85, 150 cm to 180 cm for the weight group of 85 to 105, and 160 cm to 190 cm for the weight group of 105 to 125 appears most acceptable.
  • the preferred widths for the selected lengths may also be calculated by the formula of width i.e. A L which for the second weight group, i.e.
  • the group of 65 to 85 Kgs would give an optimum width of or approximately 10 1/2 cm for a ski of 170 cms, or 11 1/4 cm for a 160 cm ski, or 12 cm for a 150 cm ski or 13 cm for a 140 cm ski. These values are shown in the Average Columns in the Weight Group of 65 to 85 Kgs in Table III. Also these figures are those used in plotting the line D in the graph of Figure 1. To calculate an overall acceptable range for the width, again using the above indicated accepted variation, equals or approximately 9 cm for a lower limit, and or approximately 12 cm for an upper limit of the width range for a ski of a length of 170 cm. The calculated range for the selected lengths for each weight group are shown in Table III.
  • FIG. 2 graphically illustrates the results as calculated and tabulated in Tables III and IV.
  • the shaded area generally denotes the overall acceptable L v W combinations.
  • the arrow H shows the range of lengths for each Weight Group. It is clear, of course, that for skis of lengths between those specified, the range of widths could be obtained by interpolation.
  • the double headed arrows J indicate the plotted lines, the shaded area between which is relevant for each weight group.
  • the planing/floatation principle is dependent on the aforementioned relationship between length and width of the ski.
  • the positioning of the skier's weight with respect to the length of the ski is also of importance. For example, if the skier's weight is centered too far to the rear, the heel of the ski will sink too far into the soft snow, to produce an undesirable braking effect, whereas if the skier's weight is too far forward, the front end or tip of the ski will sink, making skiing and walking and climbing difficult.
  • the present invention includes means to adjust the ski boot longitudinally on the ski. The adjustment is sufficiently simple that it can be performed by the skier on the slopes, to accommodate the snow conditions of the area being skied.
  • static balance point which is point of balance for the skier on his skies standing on the level with the tips and rear end portions or tails of his skis sinking an equal amount in the snow.
  • the balance point varies under different skiing and climbing conditions.
  • FIG. 3 is a perspective view of an embodiment of the binding plate of the present invention.
  • the binding plate shown generally at 10 includes forward and rearward, laterally extending portions or cross members 12, and integrally formed center member 14.
  • the outer edges 16 of each cross member 12 are bent around the corner edge of the ski 20 so as to enter a groove 22 formed in the edge 24 of the ski.
  • Groove 22 is formed by routing, or other means, which will produce a groove or channel along either side of the ski.
  • An upper face 26 of a metal plate or the ski provides a rail 28 for each bent portion 16 to slide along.
  • Center member 14 of binding plate 10 has a longitudinal slot 30 through which locking means generally shown at 32 passes through.
  • Openings 34 in the binding plate 10 provides a means for attaching a normal ski binding 39 as best shown in Figures 5 and 6 which may be a conventional downhill ski binding or Cross-country ski bindings.
  • Flat head screws 36 go through the upper plate 26 to provide extra support on the surface of the ski and to prevent delamination.
  • Slot 38 is cut in the upper metal plate 26 to permit removal of binding plate 10 from ski 20. The plate is moved longitudinally on the ski until rear edge 16 of the binding plate is in alignment with slot 38 permitting the binding plate to be removed from the ski.
  • Locking means 32 as shown in Figure 5 comprises a hexagonal or knurled headed screw having a threaded portion 35 which mates with a helicoil in one of the openings 40.
  • the additional openings 40 are provided to permit the locking screw 32 to be moved so as to provide more variations in the positioning of the binding plate. Also more than one locking screw can be used at one time to provide a stronger attachment against longitudinal slippage.
  • Slot 30 may have in a preferred embodiment countersunk holes 37 ( Figure 4) which allow a head of the locking screw to seat therein so as to more securely lock the plate in the correct position.
  • a pair of screws 42 are threaded into openings (not shown) in the ski on either side of the center member 14, and by which a small laterally extending strap or bridge member 43 is held down over the center member 42.
  • This bridge has a small central projection 44 which mates with countersunk holes 45 in the center member, so that the binding plate may slide in a fore and aft direction when the screws 42 are loosened and then tightened after the adjustment of the under plate, and then may be locked to lock it on the ski in regularly located positions along the ski.
  • binding plate 72 is seen to be of a similar shape to binding plate 12 shown in the previous embodiment, but the outer edges of the plate do not curl around the side of the ski inasmuch as the upper surface of the ski does not provide a rail which will keep the binding plate in position.
  • angle members 74 are attached to the side of the ski by attachment means such as screws 76. The upper edge 75 of angle member 74 is bent inwardly to lie parallel to the upper face of the ski and spaced therefrom.
  • the cross members 12 of the binding plate 72 are just slightly narrower than the width of the top surface of the ski so that the edges of the binding plate extends into the gap created by the bent over edge 75 of the angle member 74.
  • Locking means similar to that previously described may be used in conjunct with in a slot (not shown) along central portion 14 of binding plate 72.
  • FIG 12 is an illustration of an alternate embodiment for use with attachment means or locking screw 32 described.
  • drill hole 51 has a threaded insert 50 glued or otherwise fixed into the hole.
  • the insert 50 has a bore 52 which is internally threaded to receive the threaded portion 35 of locking screw 32 within the hole.
  • Such an arrangement provides better wear characteristics to withstand repeated removal of the locking screw 32 during adjustment.
  • the upper plate 26 is slightly wider than the top surface of the ski which allows groove 22 to be shallower than that of the embodiment of Figure 3. This feature of the shallower groove decreases any tendency of ski delamination and also reduces icing of the groove.
  • steel inserts 50 are used in openings on either side of the central portion of the binding plate 10 to receive a pair of locking screws 32.
  • the screws 32 pass through openings 65 at opposite ends of the bridge member 43 which has a downwardly projecting portion 44 for receipt in one of a number of openings 45 spaced longitudinally in the binding plate 10.
  • the mounting of the binder plate on the ski must be such that it can move forwardly and rearwardly from the static balance point. It is preferable to have a total range of movement up to at least 15 cm. With the positioning of the slot and/or holes in the binder plate and the screw receiving holes in the ski being such that the tip of the boot can move at least 1 1/2 cm forward at the conventional boot position on the ski to an aft position of 13 1/2 cm.
  • the embodiments of the present invention as described above are such that such exclusive movement can be obtained without structural stiffening of the ski which would be disadvantageous.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (14)

  1. Paire de skis de neige courts pour la pratique du ski alpin, caractérisée en ce que chaque ski a une largeur, une longueur et une aire de prise sur la neige sélectionnées pour réaliser les actions de flotter, de planer et de se guider par les pieds, ce ski ayant un domaine total de largeur de 11,5 cm environ à 12,5 cm environ et une longueur totale de ski de 150 cm à 165 cm environ.
  2. Paire de skis selon la revendication 1, chaque ski de ladite paire comprenant de plus une plaque de fixation ayant des moyens de liaison pour recevoir une fixation de chaussure de ski, et un moyen de verrouillage susceptible d'être relâché pour fixer la plaque de fixation dans différentes positions dans la direction longitudinale du ski.
  3. Paire de skis selon la revendication 2, dans laquelle la plaque de fixation et le ski ont des moyens de bride et de rainure s'imbriquant l'un dans l'autre le long des bords latéraux du ski, ménageant la possibilité d'un mouvement coulissant relatif de la plaque de fixation le long du ski, dans la direction longitudinale.
  4. Paire de skis selon la revendication 3, dans laquelle les moyens de rainure sont positionnés en fonction de la longueur du ski pour permettre le positionnement du skieur aussi bien vers l'avant que vers l'arrière du point d'équilibre statique du skieur sur ses skis.
  5. Paire de skis de neige courts selon la revendication 1, dans laquelle l'aire de la surface du ski est 25 cm²/kg de poids du skieur.
  6. Paire de skis de neige courts pour la pratique du ski alpin, caractérisée en ce que chaque ski de ladite paire a une largeur, une longueur et une aire de prise sur la neige sélectionnées pour réaliser les actions de flotter, de planer et de se guider par les pieds, chaque ski ayant un domaine de largeur de 11,5 cm environ à 12,5 cm environ pour une longueur totale du ski de 150 cm à 165 cm, chaque aire de ski étant une fonction du poids du skieur, et dans laquelle le domaine d'aire de surface par kg de poids du skieur s'étend de 21 cm² par kg environ à 27 cm² par kg environ.
  7. Combinaison d'un ski et d'une plaque de fixation, ledit ski étant du type défini par une quelconque des revendications 1 à 6 et ayant des bords latéraux et une surface supérieure plate, la plaque de fixation étant une plaque mince, plate et rigide munie de moyens de fixation pour recevoir une fixation de chaussure de ski, caractérisée en ce que la plaque de fixation et le ski ont des moyens de bride et de rainure pouvant s'imbriquer l'un dans l'autre le long des bords latéraux du ski pour ménager la possibilité d'un mouvement coulissant relatif de la plaque de fixation dans la direction longitudinale du ski tout en empêchant la séparation de la plaque de fixation et de la surface supérieure du ski, et un moyen de verrouillage susceptible d'être relâché, pour bloquer le mouvement longitudinal de la plaque en différentes positions sur le ski.
  8. Combinaison selon la revendication 7, dans laquelle les moyens de bride et de rainure pouvant s'imbriquer l'un dans l'autre comprennent une paire de rainures dans les bords latéraux opposés du ski dans la direction longitudinale, et la plaque de fixation ayant des parties larges fournissant des bords latéraux recourbés et formant des brides tournées en dedans accueillies dans lesdites rainures.
  9. Combinaison selon la revendication 8, dans laquelle le ski a une plaque de métal fixée à sa surface supérieure et présentant des bords latéraux adjacents aux bords latéraux du ski, les rainures étant réalisées dans le corps du ski sous les bords latéraux de la plaque de métal, les brides tournées en dedans s'étendant vers l'intérieur sous les bords latéraux de la plaque de métal.
  10. Combinaison selon la revendication 9, dans laquelles les bords latéraux de la plaque de métal s'étendent latéralement d'une faible distance au-delà des bords latéraux du ski, et dans laquelle les rainures dans les bords latéraux du ski sont peu profondes.
  11. Combinaison selon la revendication 7, dans laquelle les moyens de bride et de rainure pouvant s'imbriquer l'un dans l'autre comprennent des pièces d'angle métalliques fixées aux bords latéraux du ski et ayant des parties recourbées vers l'intérieur à un certain espacement au-dessus de la surface supérieure du ski et créant ainsi des intervalles, la plaque de fixation ayant des parties larges dont les bords latéraux s'étendent sous lesdites parties recourbées et à l'intérieur desdits intervalles.
  12. Combinaison selon la revendication 7, dans laquelle le moyen de verrouillage comprend au moins une ouverture dans le ski et une fente longitudinale dans la plaque de fixation, et un moyen de vissage s'étendant à travers cette fente et dans l'ouverture filetée.
  13. Combinaison selon la revendication 12, dans laquelle la fente est munie de trous fraisés pour recevoir la tête de la vis pour former un verrouillage total entre la plaque de fixation et le moyen de vissage.
  14. Combinaison selon la revendication 7, dans laquelle le moyen de verrouillage comprend un élément pont passant au-dessus d'une partie centrale de la partie de vissage de la plaque de fixation pour tirer cet élément pont vers le bas vers ladite partie centrale, cette partie centrale ayant une série d'ouvertures dans la direction longitudinale du ski, la partie de pont ayant une protubérance dirigée vers le bas pour être acueillie dans l'une de ces ouvertures quand le pont est tiré vers le bas.
EP90914042A 1989-09-29 1990-09-28 Ski large et court et fixation Expired - Lifetime EP0493452B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA615220 1989-09-29
CA000615220A CA1332433C (fr) 1989-09-29 1989-09-29 Ski et fixation correspondante
PCT/CA1990/000322 WO1991004770A1 (fr) 1989-09-29 1990-09-28 Ski large et court et fixation

Publications (2)

Publication Number Publication Date
EP0493452A1 EP0493452A1 (fr) 1992-07-08
EP0493452B1 true EP0493452B1 (fr) 1995-05-10

Family

ID=4140882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914042A Expired - Lifetime EP0493452B1 (fr) 1989-09-29 1990-09-28 Ski large et court et fixation

Country Status (6)

Country Link
EP (1) EP0493452B1 (fr)
AT (1) ATE122247T1 (fr)
AU (1) AU6436690A (fr)
CA (1) CA1332433C (fr)
DE (1) DE69019361T2 (fr)
WO (1) WO1991004770A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6184200B1 (en) 1995-09-28 2001-02-06 Amgen Inc. Truncated glial cell line-derived neurotrophic factor
FR2756747B1 (fr) * 1996-12-11 1999-02-12 Look Fixations Sa Dispositif de montage d'un element de fixation de ski sur un ski
FR2827787B1 (fr) 2001-07-25 2003-11-07 Rossignol Sa Dispositif support des fixations d'une chaussure et planche de glisse sur neige equipee d'un tel dispositif
FR2849392B1 (fr) * 2002-12-31 2005-03-18 Skis Dynastar Dispositif de retenue et de reglage en position longitudinale d'une fixation sur une planche de glisse sur neige
AT500252B1 (de) * 2003-03-07 2008-12-15 Tyrolia Technology Gmbh Gleitbrett, insbesondere ski

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314687A (en) * 1963-08-30 1967-04-18 Robin F Tiesler Adjustable ski binding
FR2282823A1 (fr) * 1974-08-30 1976-03-26 Salomon & Fils F Chaussure de ski concue pour se deplacer librement apres declenchement dans une fixation comportant une machoire de retenue laterale
CA989435A (en) * 1974-09-25 1976-05-18 Alec Pedersen Monoski
IT1115412B (it) * 1978-05-04 1986-02-03 Bortoli Ettore Piastra di supporto universale per attacchi anteriore e posteriore per sci con ganasce allargabili di fissaggio
AT372005B (de) * 1981-05-22 1983-08-25 Ski World Inc Ski

Also Published As

Publication number Publication date
EP0493452A1 (fr) 1992-07-08
WO1991004770A1 (fr) 1991-04-18
CA1332433C (fr) 1994-10-11
AU6436690A (en) 1991-04-28
DE69019361T2 (de) 1996-02-08
DE69019361D1 (de) 1995-06-14
ATE122247T1 (de) 1995-05-15

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