Linear moving coil actuator

Details Linear moving coil actuator Linear moving coil actuator

1982-01-18

1984-03-27

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

310 27, H02K 4102

Patent

active

044396996

ABSTRACT:
The magnetic head actuator includes a substantially totally enclosed self-shielding voice coil linear motor which includes a continuous, cylindrical permanent magnet of flexible material which is sealed against the inner cylindrical wall of the outer core by a flared copper sleeve that also serves as a non-magnetic, conductive shorted turn to reduce instantaneous inductance of the drive coil. An annular reluctance gap in the outer core provides symmetrical distribution of the permanent magnet flux.

REFERENCES:
patent: 3161793 (1964-12-01), Laithwaite
patent: 3417268 (1968-12-01), Lace
patent: 3656015 (1972-04-01), Gillum
patent: 3723780 (1973-03-01), Gillum
patent: 3889139 (1975-06-01), Hughes
patent: 3896319 (1975-07-01), Chari

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