Abstract: A trailer tongue hitch and ball clamp assembly includes a base portion loosely surrounding the hitch ball shank between its sphere and a tow bar transversely of the depending surface of the trailer hitch coupling socket forming member. A bridge portion of the clamp assembly, secured to the base portion, transversely overlies the upper surface of the hitch coupling for impinging it against the base member in surrounding relation with respect to the hitch ball sphere which permits the clamp assembly to move as a unit with the trailer tongue socket forming member in its horizontal and vertical pivoting movement relative to the hitch ball.

Abstract: A trailer hitch coupling anti-theft lock is formed by a platen underlying the ball socket recess of a hitch coupling and having an elongated lock pin projecting vertically through the platen and secured at its innermost end with a flange for impinging a component of the hitch coupling between the flange and the platen. A hollow housing surrounding a shackle-type padlock is provided with an aperture in its wall for slidably receiving the outwardly projecting end portion of the lockpin and biasing the housing wall forming the aperture into an annular groove in the lockpin adjacent the outer surface of the platen in response to inward movement of the lock body relative to its shackle.

Abstract: In a vehicle having a spare tire and wheel assembly supported adjacent the depending rearward limit thereof by a cable hoist operated by a rearwardly projected hoist shaft terminating adjacent the rearward bumper of the vehicle. A lockable shaft is extended through the bumper and engages the rearward end of the shaft for receiving a lock and preventing access to the rearward end of the hoist shaft. A sleeve surrounds the lockable shaft and an elongated sleeve surrounds the hoist shaft in shielding relation preventing access thereto by an unauthorized person.