Low energy magnetic actuator

Details Low energy magnetic actuator Low energy magnetic actuator

1978-12-29

1980-09-23

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

101 9329, 101 9348, 335229, 361152, H01F 710

Patent

active

042245893

ABSTRACT:
Magnetic actuator apparatus in which the armature is held in a restrained position on a magnetic core by magnetic flux whose density is cyclically varied in time, and the armature is selectively released by a bucking coil that is energized only when the armature retention flux is at low holding value. The flux source is a permanent magnet that is reciprocated or rotated to vary the armature retaining force.

REFERENCES:
patent: 3146381 (1964-08-01), Moreau
patent: 4020433 (1977-04-01), Uchidoi et al.

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