US Patent 8967654 Trailer hitch

A trailer hitch is disclosed which eliminates the need for safety chains. The trailer hitch includes a locking device which is selectively pivotally secured to the tongue of a trailer or the hitch ball coupler assembly at the forward end of the tongue or to both the hitch ball coupler assembly and the tongue. The locking device is selectively movable between locked and unlocked positions. When the locking device is in its locked position, the locking device prevents the disconnection of the hitch ball coupler assembly from the hitch ball.