Fault detection indicator

Details Fault detection indicator Fault detection indicator

1974-10-17

1976-11-30

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335 81, 335179, 335229, H01F 708

Patent

active

039952436

ABSTRACT:
A fault detection indicator comprises an electromagnetic core and coil assembly, a repulsion permanent magnet and two trip-latch permanent magnets. In addition, an indicator button may be employed to present the state of the indicator. The indicator design presents a simple construction which will electrically change its indicated state, remain in latched position and be capable of being manually restored. Internal switches may be included in the indicator which function in conjunction with the trip-latch magnets.

REFERENCES:
patent: 2919324 (1959-12-01), Schuessler
patent: 3132290 (1964-05-01), Kumpf
patent: 3543202 (1970-11-01), Naybor
patent: 3683239 (1972-08-01), Sturman
patent: 3755766 (1973-08-01), Read, Jr.
patent: 3783423 (1974-01-01), Mater et al.

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