Patent ID: 8007058
Filing Date: 2011-08-30
Classification: B62D

Abstract:
1. A traction assembly for replacing a steerable wheel on a vehicle, said vehicle comprising a steering assembly for steering said steerable wheel, said steering assembly having a steering axis, said traction assembly comprising a sprocket wheel, a support frame and a longitudinally extending endless track disposed around and cooperating with said sprocket wheel and said support frame, said endless track comprising an inner wheel-engaging surface and an outer ground-engaging surface, said ground-engaging surface being provided with traction lugs and defining a first laterally extending portion extending longitudinally along a circumference of said track, and a second laterally extending portion extending longitudinally along said circumference of said track, wherein said traction lugs, or portions thereof, located on said first laterally extending portion are substantially higher than said traction lugs, or portions thereof, located on said second laterally extending portion, such that said traction lugs, or portions thereof, located on said first laterally extending portion define a first ground-contacting area, and said traction lugs, or portions thereof, located on both of said first and second laterally extending portions define a second ground-contacting area, wherein said first ground-contacting area is smaller than said second ground-contacting area and wherein said first laterally extending portion is located on said ground-engaging surface such that said steering axis intersects said first ground-contacting area when said traction assembly is mounted to said steering assembly of said vehicle.