Moving permanent magnet limited motion actuator

Details Moving permanent magnet limited motion actuator Moving permanent magnet limited motion actuator

1978-06-26

1980-03-25

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335268, H01F 708

Patent

active

041952774

ABSTRACT:
A limited motion actuator which utilizes a moving permanent magnet as an armature. The drive is provided by the simultaneous repulsion and attraction of the movable permanent magnet within stationary coils. The magnetic circuit is formed to allow one pole of the armature to be simultaneously repelled from the coil of like polarity and attracted to the pole of opposite polarity. The preferred magnetic circuit configuration consists of two poles and a magnetic return path, which forms two additional poles. The movable permanent magnetic armature is always located within the regions of the coil poles thus allowing accurate control of the driving forces in both forward and reverse directions over the complete armature cycle.

REFERENCES:
patent: 3379214 (1968-04-01), Weinberg
patent: 3914723 (1975-10-01), Goodbar
patent: 3928988 (1975-12-01), Luth
patent: 3952853 (1976-04-01), Feldman

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