Linear head actuator

Details Linear head actuator Linear head actuator

1981-03-30

1983-07-12

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360106, 360109, 360 75, G11B 554, G11B 2124

Patent

active

043934250

ABSTRACT:
An actuator for linearly moving magnetic heads in which an open-ended carriage assembly extends down both sides of the magnet structure in order to provide a much shorter actuator assembly than is typical is described. The loading mechanism is not mounted upon the carriage assembly, thereby allowing the actuator to have a higher resonant frequency than those actuators which carry a more complex structure on the carriage assembly. The magnet structure is in the shape of an E with the motor coil, which is mounted across the open end of the carriage assembly, moving along this center section of the magnet structure. Alignment pins located at the other end of the carriage assembly allow the magnetic head arms to be mounted and aligned quickly and with precision.

REFERENCES:
patent: 3849800 (1974-11-01), Cuzner et al.
patent: 3931645 (1976-01-01), Dodd et al.
patent: 4003092 (1977-01-01), Hirata
patent: 4208685 (1980-06-01), Matla et al.
IBM/TDB vol 12, No. 12, May 1970, p. 2273, "High Force Constant Voice Coil Motor . . . ", by Rexford.
IBM/TDB vol. 15, No. 3, Aug. 1972, p. 749, "Balanced Force Voice-Coil Actuator", by Frater.

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