Controlled-drag voice coil magnetic actuator

Details Controlled-drag voice coil magnetic actuator Controlled-drag voice coil magnetic actuator

1990-07-09

1992-06-02

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

H02K 4904

Patent

active

051189763

ABSTRACT:
A disk drive actuator includes automatic eddy-current braking capability, enhanced by simple modifications of coil-mount structure, such as a split damping ring and spaced-rib array to produce intentional eddy current drag at unacceptably high actuation speeds, e.g., above 75 ips.

REFERENCES:
patent: 4144466 (1979-03-01), Hatch
patent: 4287445 (1981-09-01), Lienau
patent: 4827162 (1989-05-01), Morris et al.

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