Snow vehicles

Claim 1

A snow vehicle comprising: a main body member for supporting at least one rider; first snow engaging means for supporting the rear portion of said snow vehicle; propulsion means supported on said first snow engaging means for driving said snow vehicle; second snow engaging means for supporting the front portion of said snow vehicle; pivotal mounting means for supporting said main body member on said first and second snow engaging means for pivotal movement about a pivotally interconnected axis generally parallel to the longitudinal axis of said snow vehicle; steering means including means interconnecting said second snow engaging means with said main body member for rotating said second snow engaging means about substantially vertical axis; one of said first and second snow engaging means comprising a ski assembly in turn comprising a pair of laterally spaced skis and a pivotally interconnected four-arm parallelogram force coupler comprising a pair of spaced laterally extending cross arms and a pair of vertically extending spaced outboard arms and wherein said skis are mounted to two said outboard arms of said force coupler; said main body member being pivotally coupled at spaced, central points to crossarms of said force coupler; control means comprising a reference platform including first and second foot engaging surfaces on opposite sides of said main body member and including means for supporting and maintaining said reference platform on one of said snow engaging means in a plane substantially parallel to the terrain under the snow vehicle, whereby a rider mounted on said main body member may apply a differential force to said first and second foot engaging surfaces with respect to said main body member and cause said snow vehicle to tilt with respect to said terrain.