Voice coil balanced actuator

Details Voice coil balanced actuator Voice coil balanced actuator

1985-08-07

1987-11-17

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 98, G11B 555, G11B 5012

Patent

active

047077549

ABSTRACT:
A disk drive which includes an actuator motor whose magnets and iron path are mounted on the arm assembly to act as a counter weight. The coil of the actuator motor is mounted to the base of the disk drive with the iron path disposed around the coil and the iron core disposed through the center of the coil and all are mounted on the iron path and face the coils. By utilizing the iron path and magnets as a counterbalance, the total mass of the arm is reduced, reducing the inertia of the arm and of the power requirements of the actuator motor to move the arm.

REFERENCES:
patent: 4145725 (1979-03-01), Wallis
patent: 4331991 (1982-05-01), Morehouse
patent: 4346416 (1982-08-01), Riggle

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