Magnetic device

Details Magnetic device Magnetic device

1981-11-18

1984-07-03

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335277, H01F 708

Patent

active

044582307

ABSTRACT:
A magnetic device is arranged so that by supplying current to coils provided on a yoke, an armature is attracted to the yoke, and by interrupting the current supply to the coils, the armature is separated from the yoke. A precious metal coating is provided at least on one of the attracting surfaces of the yoke and the armature. This arrangement allows the armature to smoothly disengage from the yoke, and provides corrosion resistivity.

REFERENCES:
patent: 2735967 (1956-02-01), Lewus
patent: 2986662 (1961-05-01), Wahl
patent: 3479627 (1969-11-01), Underwood
patent: 4131865 (1978-12-01), Hart

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