Magnetic disk drive incorporating a magnetic actuator lock and a

Details Magnetic disk drive incorporating a magnetic actuator lock and a Magnetic disk drive incorporating a magnetic actuator lock and a

1989-11-09

1991-07-23

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360106, G11B 554, G11B 2122

Patent

active

050348370

ABSTRACT:
The invention provides a magneticf actuator lock for the head positioning actuator of a disk drive. The magnetic actuator lock comprises a magnet, and first and second stop means, one of which is attached to the head positioning actuator. The stop means constitute a low reluctance pathway for magnetic flux, thus attracting and "latching" the two stop means together. This magnetic actuator lock does not require an additional permanent magnet but may use the magnetic force of the permanent magnet in a voice coil motor.

REFERENCES:
patent: 4581667 (1986-04-01), Garfast
patent: 4692829 (1987-09-01), Campbell
patent: 4710834 (1987-12-01), Brand et al.
patent: 4764831 (1988-08-01), Patel
patent: 4881139 (1989-11-01), Hazebrouck
patent: 4903157 (1990-02-01), Malek

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