Patent ID: 6565108
Filing Date: 2003-05-20
Classification: B62D

Abstract:
A locking mechanism for a multi-axle trailer, comprising:a â€œjoe-dogâ€  type trailer-pulling unit having at least one axle with wheels and a king-pin plate to receive the king pin of a trailer, the plate being pivotable fore and aft about a transverse axis parallel to the wheel axle; an aperture formed on one of the trailer and the trailer-pulling unit; and a powered locking member disposed on the other of the trailer and trailer-pulling unit, the locking member being moveable along an axis between an extended position wherein the member engages with the aperture and a retracted position wherein the member is not engaged with the aperture, and wherein the axis of member movement intersects with the transverse axis about which the king-pin plate pivots thereby maintaining the axle of the trailer-pulling unit, and the axles of the trailer in parallel when the member is engaged.