Electromagnet with permanent magnet held by a cage

Details Electromagnet with permanent magnet held by a cage Electromagnet with permanent magnet held by a cage

1988-07-08

1989-06-27

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335230, H01F 708

Patent

active

048433616

ABSTRACT:
A pole piece (14a) of the movable core (12) moves in an air gap (25a) between external (61) and internal (16) pole pieces. A pole flange (14b) of the same core (12) moves in an air gap (25b) between a portion (30b) of the external pole piece (61) and a magnetic lobe (36) which is in contact with this latter. A permanent return magnet (17) is disposed between the internal (16) and external (61) pole pieces. The magnet (17), the internal pole piece (16) and

REFERENCES:
patent: 3614689 (1971-10-01), Canonne
patent: 4316167 (1982-02-01), Koehler
patent: 4643393 (1987-02-01), Kosugi et al.

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