Patent ID: 7658455

Claim:
A traction enhancement device for use with a vehicle having dual tandem wheels, said device comprising: a plurality of track pads, each said track pad having a traction portion defining first and second ends and an alignment portion extending generally perpendicularly from said traction portion, said alignment portion having an elongate parallelogram shape that is configured to pass between said dual wheels beyond lower edges of respective traction portions; a first chain coupled to each said track pad first end for maintaining a predetermined spacing between said track pad first ends; a second chain coupled to each said track pad second end for maintaining a predetermined spacing between said track pad second ends; a spacer configured for fixed attachment between respective dual wheels, said spacer having first and second planar faces that are parallel to one another and separated by a plurality of load bearing members, said load bearing members having a configuration complementary to a configuration of said track pad alignment portions such that respective alignment portions are temporarily in communication with respective load bearing members, whereby rotation of said spacer forces movement of said track pad alignment portions; wherein at least one said traction portion outer surface has a generally triangular cross section; wherein: said first chain has first and second ends and includes a single midlink that selectively couples said first and second ends of said first chain; said second chain has first and second ends and includes a single midlink that selectively couples said first and second ends of said second chain; wherein a respective midlink is not coupled to every one of said plurality of track pads; each said track pad has a width sufficient to extend across each said set of dual wheels; each said traction portion has an inner surface for contacting said wheels and an outer surface for contacting ground; and each said alignment portion is secured within a recess formed in a respective traction portion and extends away from a respective traction portion outer surface.