Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1998-08-17
2000-01-18
Leja, Ronald W.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
361 42, H02H 300
Patent
active
060162449
ABSTRACT:
The present invention teaches a new and novel system for protecting people and property against electrical shock. The invention includes a number of preferred and other embodiments which have this as their goal, but which represent a number of distinctive and novel approaches to solving prior art problems. By way of example only, and without limiting the scope of this invention, these approaches include novel immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking devices including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load (appliance) and its associated cord set (including a "plug").
REFERENCES:
patent: 3813579 (1974-05-01), Doyle et al.
patent: 3987341 (1976-10-01), Clark
patent: 4089031 (1978-05-01), Stevens
patent: 4270158 (1981-05-01), Gilardoni et al.
patent: 4464582 (1984-08-01), Aragaki et al.
patent: 4589047 (1986-05-01), Gaus et al.
Gershen Bernard
Pearse James N.
Rosenbaum Saul
Leja Ronald W.
Leviton Manufacturing Co. Inc.
Sutton Paul J.
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