Patent attributes
A coupler lock device is configured for use with a self-latching trailer coupler securing a hitch ball in the coupler socket. The coupler lock device has a housing that includes a top panel portion defining a cavity configured so that, when the housing is secured in position over the trailer coupler, the housing top panel prevents seating of the hitch ball in the coupler socket by restricting upward movement of the release lever when an attempt is made to insert the hitch ball into the coupler socket. Also, when the housing is secured in position over the trailer coupler with a hitch ball seated in the coupler socket, the housing top panel prevents removal of the coupler socket from the hitch ball by restricting upward movement of the release lever that would otherwise release the coupler socket from the hitch ball.
