US Patent 7306275 Receiver pin

A receiver pin is provided for attaching a ball mount to a receiver on a vehicle. The receiver pin includes a body having an insertion portion and a retaining portion. The insertion portion is sized for insertion through aligned openings in the ball mount and the receiver. The retaining portion extends at least partially laterally from a proximal end of the insertion portion for limiting axial movement of the inserted body in a first direction. The insertion portion also includes a transverse receiving aperture at a distal end for receiving a retaining clip to limit axial movement of the inserted body in a second direction.