Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1988-01-29
1989-08-22
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
361 42, 361115, 219363, 307118, 200325, H02H 316
Patent
active
048601470
ABSTRACT:
A safety device to protect a piece of domestic electrical apparatus connected by means of a flexible supply lead to a plug to be attached to a conventional mains outlet. Between the pins of the plug and the exposed electrical working components of the apparatus is provided an on-off switch which will isolate the electrical operating components from the mains supply when the switch is in the "off" position. Sensor means are positioned within the piece of domestic electrical apparatus adjacent any exposed electrical components and control means for detecting a path of conduction between the sensor means and those exposed electrical components. Magnetically controlled release means including a permanent magnet and an electrically induced magnetic field in opposition thereto, preferably a DC motor provides movement when energized by the control means when the latter detect a path of conduction. Mechanical latch means hold the switch in its "on" position until the means move, and resilient means then urge the switch to its "off" position when released by the mechanical latch means.
REFERENCES:
patent: 1051929 (1913-02-01), Van Nuis et al.
patent: 1836985 (1931-12-01), Ow
patent: 2264990 (1941-12-01), Lindstrom et al.
patent: 2333459 (1943-11-01), Atwood
patent: 3011100 (1961-11-01), Spinelli et al.
patent: 3310762 (1967-03-01), Goetz
patent: 3457377 (1969-07-01), Olson
patent: 3518465 (1970-06-01), Jepson et al.
patent: 4194104 (1980-03-01), Stenta
patent: 4709293 (1987-11-01), Gershen et al.
patent: 4751603 (1988-06-01), Kwan
Osborn David
Pellinen A. D.
Simatelex Manufactory Company Limited
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