Quad parabolic snowmobile ski

B - Operations – Transporting – 62 – B

Patent

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Details

B62B 17/02 (2006.01) B62D 55/07 (2006.01)

Patent

CA 2605619

The quad parabolic snowmobile ski is an elongated body with a pair of symmetrically opposed ski parabolic cutting edges disposed longitudinally along the bottom and keel of the ski. The keel is attached to the bottom of the ski and has a central median ridge, i.e. a keel rail. A substantial portion of the keel rail protrudes below the bottom of the ski to form a central and longitudinal point of contact with the snow. The keel defines symmetrically opposed snow-funneling channels along the opposite sides of the central median ridge. Varying radii of curvature of the channels form parabolically-shaped channel outer sidewalls. Symmetrically opposed keel parabolic cutting edges are formed by contouring a keel body width to follow the contour of the parabolic shaped outer sidewalls at a constant cutting edge width.

Le ski parabolique d'une motoneige est un corps allongé avec deux bords tranchants, opposés et symétriques, situés le long de la face inférieure et d'une quille. La quille est fixée à la face inférieure du ski et comporte une arête médiane centrale, c'est-à-dire une tranche. Une partie importante de la tranche fait saillie sous la face inférieure du ski pour former un point de contact central et longitudinal avec la neige. La quille définit des rainures symétriques qui canalisent la neige et qui sont situées le long des côtés opposés de l'arête médiane centrale. Les rayons de courbure variables des rainures forment les parois latérales extérieures paraboliques des canaux. Les bords tranchants de la quille, opposés, symétriques et de forme parabolique, sont formés par le profilage de la largeur du corps de quille. Ce profilage suit le contour des parois latérales extérieures paraboliques de façon à donner une largeur constante aux bords tranchants.

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