Conversion kit for converting a snow vehicle into a wheeled vehicle in which the snow vehicle has a transverse beam adjacent the front of the vehicle body. Skis on ski pivots adjacent the front and a powered track assembly adjacent the rear of the vehicle are removed from the snow vehicle and the kit...http://www.google.fr/patents/US4204582?utm_source=gb-gplus-shareBrevet US4204582 - Wheel conversion kit for snow vehicle