Abstract: A trailer hitch ball mount locking apparatus that includes a locking rod assembly having a main body with a slidable rod extending from each end of the main body, a trailer hitch coupler having a hitch ball socket for receiving a hitch ball therein and a pair of rail slots for receiving and supporting a free end of the corresponding slidable rod of the locking rod assembly therein, and a shifting fork pivotably connected to the trailer hitch coupler with the shifting fork having a hand gripping end and a slotted end with a surface for engaging a portion of the main body of the locking rod assembly to guide the locking rod assembly between an open gate condition and a closed gate condition.

Abstract: A hitch adapter system with damping effect for controlling back and forth movement or bumping on the hitch receiver and the prime mover. The hitch adapter system with damping effect includes a lower support member having a planar bottom wall and adapted to be in communication with a prime mover; an upper support member having a planar main wall and disposed above and movable relative to the lower support member and adapted to be in communication with a trailer; a linkage assembly pivotably interconnecting the lower and upper support members; and a buffer assembly retarding and cushioning the movement of the upper support member relative to the lower support member.