Patent ID: 8042629
Filing Date: 2011-10-25
Classification: B62D

Abstract:
1. A snow traction unit to replace a wheel of a vehicle, wherein said snow traction unit includes: a) a frame supporting two carrier wheels; b) said carrier wheels being spaced apart a distance greater than their combined radii; c) an endless snow contacting track mounted for rotation en around said carrier wheels; and d) a guide rail provided between the lower extremities of said carrier wheels, wherein said snow contacting track moves over said guide rail; e) a drive engagement means engaging a drive shaft of the vehicle and driving at least one of said carrier wheels, wherein the guide rail includes a contact surface of a low friction material and during operation, snow enters between and lubricates the endless track and the guide rail, and wherein the endless track is coupled to the guide rail by slidable brackets that encompass the guide rail so as to prevent detachment of the endless track from the guide rail during use, the arrangement of the width of the track, the spacing between the carrier wheels and the guide rail resulting in the vehicle having a force imprint less than 250 Kg/square meter.