THREE WIRE GROUNDED RECEPTACLE WITH SAFETY LOCK

摘要

A grounded receptacle to receive a conventional plug with two live sockets to receive the two live prongs of the plug and a grounded socket to receive the ground prong of the plug. Previous grounded receptacles of this type had the disadvantage that they were as equally suited to be used with plugs without a ground prong as with plugs with a ground prong. The grounded socket of this receptacle has at least one blocking plate which normally extends to a position blocking insertion of one of the live prongs of the plug into the corresponding live sockets of the receptacle, but which is resiliently displaced by insertion of a ground prong into the grounded socket to a position in which such insertion of the live prong is permitted.