Quad parabolic snowmobile ski

Details Quad parabolic snowmobile ski Quad parabolic snowmobile ski

2006-10-25

2009-02-10

Ellis, Christopher P (Department: 3618)

Land vehicles

Runner vehicle

Runner bases

C280S022000, C280S022100

Reexamination Certificate

active

07487975

ABSTRACT:
The quad parabolic snowmobile ski is an elongated body having a top side, a bottom side, a tip at the front end, a rear end, a pair of symmetrically opposed ski parabolic cutting edges disposed longitudinally along the bottom of the ski, and a keel. 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 which 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.

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http://www.snoparts.com/ski—skin.htm “Snowmobile Ski Skins” retrieved on Jul. 29, 2005.
http://www.ronnies.com/store/page169.html “Snowmobile/Ski & Steering/Ski Skins” retrieved on Jul. 29, 2005.

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