Patent ID: 7487975
Filing Date: 2009-02-10
Classification: B62B

Abstract:
1. A snowmobile ski, comprising an elongated body having: a top side; a strut attachment block disposed on the top side; a bottom side; a front end forming a tip; a rear end; a pair of symmetrically opposed ski parabolic cutting edges formed on the bottom side; and a keel formed on the bottom side, the keel having a central median ridge extending from the bottom side to form a central and longitudinal point of contact with snow and symmetrically opposed snow-funneling channels defined along opposite sides of the central median ridge, the channels having varying radii of curvature to form outer sidewalls having parabolic shapes, the sidewalls, excluding the tip region, being laterally closest to each other at a center region of the elongated body and laterally farthest apart from each other between the tip and a front portion of the strut attachment block, as well as towards the rear end, the keel following the contour of the parabolic shaped outer sidewalls at a constant cutting edge width to form parabolic keel cutting edges, the parabolic cutting edges being disposed longitudinally along the bottom of the ski from a region near the front end tip to a region near the rear end, and having vertices directed laterally towards a longitudinal axis of the ski.