In-line cord ground fault circuit interrupter

Details In-line cord ground fault circuit interrupter In-line cord ground fault circuit interrupter

1995-10-23

1997-11-04

Sough, Hyung S.

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

174 77R, 174 92, H02G 15113

Patent

active

056842724

ABSTRACT:
An in-line cord ground fault circuit interrupter has a tripping relay whose various components are an integral part of the GFCI housing, instead of being self-contained. The front cover of the housing has the necessary bosses, guide slots, and screw holes for mounting of all the mechanical and electrical elements of the relay. The rear cover serves as a water resistant enclosure and holds the relay elements in position across the width of the housing. The relay's movable contact arms are attached directly to the printed circuit board of the GFCI. The relay armature is located by ribs on the front cover and is trapped in position when the relay coil and frame assembly is pushed over it using guide slots in the front cover. The armature has integral arms extending to each side wherein each arm has an actuating cam on its end. Gripping ribs and strain relief ribs are placed at the cord entrances to the housing with a chamber formed therebetween. The cord grips support the cords while the strain relief prevents forces applied to the cords outside of the enclosure being applied to the joints within the enclosure while a sealant placed in the chambers provides an environmental seal.

REFERENCES:
patent: 3836694 (1974-09-01), Kapell
patent: 4818822 (1989-04-01), Yahraus
patent: 5045000 (1991-09-01), Trame et al.
patent: 5124507 (1992-06-01), Dehling
patent: 5266740 (1993-11-01), Hsu
patent: 5306870 (1994-04-01), Abat

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