Motorized snow vehicle

Claim 1

A SNOW VEHICLE COMPRISING, IN COMBINATION, AN ELONGATED MAIN FRAME, AT LEAST ONE SKI CONNECTED TO SUPPORT SAID MAIN FRAME, AN AUXILIARY FRAME PIVOTALLY CONNECTED TO SAID MAIN FRAME FOR DISPLACEMENT ABOUT AN AXIS WHICH EXTENDS PARALLEL TO THE LONGITUDINAL AXIS OF SAID MAIN FRAME, SAID MAIN FRAME BEING ELONGATED IN THE DIRECTION OF MOVEMENT OF SAID VEHICLE, TWO FURTHER SKIS CONNECTED TO SUPPORT SAID AUXILIARY FRAME, SAID LAST-NAMED SKIS BEING SYMMETRICALLY DISPOSED WITH RESPECT TO SAID AXIS, TWO SIMILAR TRACTION BELT UNITS CARRIED BY SAID AUXILIARY FRAME, SAID TRACTION BELT UNITS BEING SYMMETRICALLY ARRANGED WITH RESPECT TO SAID AXIS, MOTOR MEANS CONNECTED TO DRIVE SAID TRACTION BELT UNITS, AND MANUALLY OPERABLE MEANS FOR SELECTIVELY VERTICALLY TRANSLATING SAID BELT UNITS ABOVE SAID FURTHER SKIS OR VERTICALLY TRANSLATING SAID BELT UNITS BELOW SAID FURTHER SKIS FOR DRIVING ENGAGEMENT WITH A SNOW COVERED SURFACE UPON WHICH SAID VEHICLE IS TO BE PROPELLED BY SAID MOTOR MEANS, AND WHEREIN SAID MOTOR MEANS IS CARRIED BY SAID MAIN FRAME, SAID VEHICLE FURTHER COMPRISING A UNIVERSAL JOINT THROUGH WHICH SAID MOTOR MEANS IS DRIVINGLY CONNECTED TO SAID BELT UNITS, SAID UNIVERSAL JOINT HAVING AT LEAST ONE VERTICAL AXIS OF PIVOTING AND AT LEAST ONE HORIZONTAL AXIS OF PIVOTING, SAID LONGITUDINAL AXIS INTERSECTING SAID VERTICAL AXIS AND COAXIALLY DISPOSED WITH RESPECT TO SAID HORIZONTAL AXIS.