Patent ID: 7740265

Claim:
A tractor dolly assembly for use in towing a semi-tractor tractor having a cab, frame, front and rear wheels and a fifth wheel assembly, the tractor dolly assembly comprising: a chassis assembly comprising a plurality of frame members forming a generally rectangular frame formed to bridge over said fifth wheel assembly and to be supported by an adjustable support on a front portion of a rear frame of a semi-tractor between the cab and the fifth wheel assembly; and a wheeled cart assembly coupled to said chassis assembly, said wheeled cart assembly including a frame and at least one axle for receiving a pair of wheels; said at least one axle mechanically coupled to said frame by way of a lifting mechanism for varying the distance between said at least one axle and said frame for selectively lifting the rear wheels of said semi-tractor off the ground during towing in a forward and reverse towing direction.