Safety device for an electrical appliance

Details Safety device for an electrical appliance Safety device for an electrical appliance

1988-10-20

1992-04-28

Williams, Howard L.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

307118, 307326, 361 45, H02H 316

Patent

active

051093154

ABSTRACT:
A safety device for minimizing electrical shock to a user is taught. Briefly stated, a ground plane is disposed inside an electrical tool or device. Should the device become immersed in water or become unreasonably wet, the plane provides a path of electrical current, which energizes an interrupt device contained therein. The interrupt device disconnects power from the device. Further, reset can only be accomplish by a special purpose tool being urged through an aperture in the device case.

REFERENCES:
patent: 4194231 (1980-03-01), Klein
patent: 4464582 (1984-08-01), Aragaki et al.
patent: 4687906 (1987-08-01), Fujishima et al.
patent: 4706153 (1987-11-01), Sainomoto et al.
patent: 4709293 (1987-11-01), Gershen
patent: 4791518 (1984-12-01), Madsen
patent: 4951169 (1990-08-01), Morse
patent: 4967308 (1990-10-01), Morse

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