US Patent 7214094 Twist mount wiring receiver

A wiring receiver (10) that may be mounted on a towing vehicle without the use of tools. The receiver (10) broadly comprises a plurality of terminals (22) for transferring signals from the towing vehicle to a towed vehicle, a main body (20) housing the terminals (22), and a cover (24) that mates to the main body (20), thereby securing the receiver (10) to a bracket (12) of the towing vehicle. The main body (20) includes a contact surface (30) with four protrusions (34) extending through the bracket 12. The cover (24) includes a contact surface (44) having arcuate slots (54) operable to slide around the protrusions (34), thereby securing the main body (20) to the towing vehicle.