Patent ID: 7533741
Filing Date: 2009-05-19
Classification: B62D

Abstract:
1. A vehicle track comprising: a) an endless track having a ground engaging exterior surface spanning opposed first and second circumferential peripheral edges; b) a framework mounted to a vehicle chassis and including i) a drive sprocket, ii) a plurality of idler wheels, iii) a plurality of first axles mounted to pivot a first longitudinal frame portion in transverse lateral relation to a second longitudinal frame portion coupled to a vehicle, and iv) a plurality of second axles mounted transverse to said first longitudinal frame portion, wherein said track is trained around said sprocket and idler wheels and said idler wheels are mounted to support an interior surface of said track as said track rotates around said framework, wherein a plurality of first and second suspensions mount to opposite ends of each of said plurality of second axles, wherein said first and second suspensions respectively contain first and second idler wheels and third and fourth idler wheels, wherein said second axles permit said first and second suspensions to longitudinally pivot, and wherein said first axles are mounted to laterally pivot each of said first and second suspensions about said second longitudinal frame portion, whereby said plurality of first and second suspensions independently rise and fall along longitudinal and lateral axes to sustain contact with said interior track surface with changing terrain contours; and c) resiliently compressible and expansible means for torsionally limiting rotation of said framework relative to said vehicle chassis.