Abstract: A sway control adaptor for mounting one end of a sway control assembly to a towing vehicle adjacent the trailer hitch is disclosed. The adaptor includes a upper elongate member having one part which overlies a portion of the trailer hitch and a second part extending transversely from the first part. A lower elongate member underlies that portion of the trailer hitch, and is bolted to the upper elongate member to mount the members to the hitch. A sway control hitch ball is mounted to the free end of the second part of the upper elongate member for attachment of the leading end of the sway control device to the towing vehicle on one side of the hitch.

Abstract: Apparatus for locking a coupling socket member in engagement with a mating ball member is disclosed. A ball retainer member is located within the coupling socket member and is movable from a lowered release position to a raised locked position. The ball retainer member is in engagement with the ball member in its raised position to lock the ball member to the coupling socket member. A latch bolt has a lower portion engaged with the ball retainer member and an upper portion which projects upwardly through an aperture in the coupling socket member. The upper end of the latch bolt has a notch formed therein. A cam lever overlies the aperture in the coupling socket member and has a pivot end pivotably attached to the latch bolt and an opposite free end. When the cam lever is pivoted from its release position to its locking position, it raises the bolt to move the ball retainer member from its lower release position to its raised locking position.