Plug-in ground fault circuit interrupter module

Claim 1

A substantially waterproof ground fault circuit interrupter module for attachment to the wires of a line cord extending from an electrical load, said module including plug blades for insertion in an electrical receptacle to connect said load to a power source, said module comprising: (a) a hollow, one-piece body member enclosed on four sides and having openings at opposite ends; (b) a plug subassembly including said blades and a solid plug member through which said blades extend in sealed engagement; (c) a relay subassembly including a coil and movable contacts; (d) a circuit board subassembly including ground fault responsive means; (e) a cover subassembly including a wall member with a circular collar extending from one side thereof; (f) means interconnecting said plug, relay, circuit board and cover subassemblies for mutual support to form a complete assembly; (g) said assembly being inserted into said body member with said plug and wall members in sealing engagement with said openings at opposite ends of said body member, whereby said relay and circuit board subassemblies are entirely enclosed in a first, watertight compartment defined by said body, plug and wall members with said collar and blades extending outwardly in opposite directions therefrom; (h) a cap member releasably engageable with said collar in covering relation to form a second compartment, said cap member having an opening therein for passage of a line cord; (i) terminal means extending in sealing engagement through the portion of said wall member surrounded by said collar between said first and second compartments for attachment thereto of the wires of a line cord within said second compartment; and (j) a resilient grommet having an opening through which a line cord passes, said grommet being positioned within said second compartment in sealing engagement with said cap member opening to render said second compartment watertight when said module is attached to a line cord.