Latching magnetic actuator

Details Latching magnetic actuator Latching magnetic actuator

1985-05-28

1986-10-28

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

335169, 335170, 335206, 335207, 335233, 335253, H01H 900

Patent

active

046201734

ABSTRACT:
A magnetically driven and latched actuator includes an armature, at least a part of which is of a ferromagnetic material, mounted for reciprocating travel between two spaced apart limit positions. An electrical coil is operative upon the ferromagnetic material to drive the armature alternately back and forth between the limit positions, and a pair of auxiliary ferromagnetic bodies are fixed, each adjacent to a respective one of the limit positions. The auxiliary bodies and the ferromagnetic portion of the armature are mutually magnetically attracted to each other so that the armature becomes magnetically latched at the limit position to which it is last driven by the coil.

REFERENCES:
patent: 2967545 (1961-01-01), Schmidt
patent: 3001049 (1961-09-01), Didier
patent: 3387185 (1968-06-01), Pearse
patent: 3401362 (1968-09-01), Spiroch et al.
patent: 3491317 (1970-01-01), Harris
patent: 4004258 (1977-01-01), Arnold
IBM Technical Disclosure Bull., Latch Relay, W. F. Beausoleil et al, vol. 11, No. 11, 4/69, 1467-1468.

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