Abstract: An adapter which serves as an anchor point for coupling a trailer to a vehicle. The adapter adapted for mating in the socket of the vehicle. The adapter rotatable between a locked and an unlocked position. The adapter including a locking member which, when rotated, moves a ball partially through an aperture, partially extending into the socket thereby locking the adapter within the socket.

Abstract: A hitch for coupling a trailer to a towing vehicle includes a first hitch member on the trailer and a second hitch member on the towing vehicle. The hitch member on the towing vehicle is mounted on a sliding mount extending across the rear axle of the vehicle. A linkage is responsive to pivoting between the trailer and towing vehicle to move the hitch on the towing vehicle toward the rear of the vehicle when turning is effected and to move the hitch on the towing vehicle just forward of the rear axle during normal longitudinal movement of the truck and trailer.

Abstract: A securement device used for attaching a hitch to a vehicle bed in which the device includes a bracket secured to a frame part of the vehicle, a support post which is seated upon the bracket and which extends upwardly through the bed and the hitch, a retainer which forms a part of the support post and which upon rotation of the support post relative to the bracket prevents separation of the support post from the bracket, and a keeper part which is secured to the support post and which overlies at least a portion of the hitch to prevent the support post from rotating relative to the bracket and which further serves to prevent the hitch from being removed from the support post.