Electromagnet magnetic circuit with permanent-magnet armature

Details Electromagnet magnetic circuit with permanent-magnet armature Electromagnet magnetic circuit with permanent-magnet armature

1978-04-18

1980-03-04

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335 79, H01F 708, H01H 5122

Patent

active

041919378

ABSTRACT:
A magnetic circuit comprising a fixed core, yokes having flat portions in parallel planes, and an armature comprising a permanent magnet provided with pole pieces having end portions projecting on either side of the magnet, a flat portion of a first one of said yokes penetrating into the space between two end portions of the pole pieces located on one side of the magnet axis, the air gap surfaces of said yokes and of said pole pieces extending normally to the magnet axis and, one the other side thereof, at least one projecting end portion of said pole pieces penetrating between two flat portions of second and third yokes carried by a same free end of the core. Such a magnetic circuit is suitable for monostable or bistable operation in relays, contactors or solenoid valves.

REFERENCES:
patent: 2864038 (1958-12-01), Ruhland et al.
patent: 2866927 (1958-12-01), Berg et al.

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