Direct access storage device having compound actuator bearing sy

Details Direct access storage device having compound actuator bearing sy Direct access storage device having compound actuator bearing sy

1996-12-12

1998-06-02

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 555

Patent

active

057610061

ABSTRACT:
In a direct access storage device having a head for interaction with a storage medium and a moving actuator on which the head is mounted, the improvement comprises a compound bearing system for the actuator, the bearing system including a first bearing of low friction for small movements of the actuator; and a second bearing of higher friction for coarse movements of the actuator. The storage medium is preferably a rotating magnetic disk having a series of concentric circular tracks. A single servo system drives the actuator so that the head follows a selected track with motion of the first bearing, and movement of the head to a new track causes motion of the second bearing. Preferably the first bearing is a flex bearing and the second bearing is a ball bearing.

REFERENCES:
patent: 3097895 (1963-07-01), Matt
patent: 3467451 (1969-09-01), Marley
patent: 3743870 (1973-07-01), Hunt
patent: 4394091 (1983-07-01), Klomp
patent: 4555189 (1985-11-01), Donkin
patent: 4682255 (1987-07-01), Sfeger et al.
patent: 4745504 (1988-05-01), Foote
patent: 4754353 (1988-06-01), Levy
patent: 4764829 (1988-08-01), Makino
patent: 4772139 (1988-09-01), Bretton
patent: 4835644 (1989-05-01), Schulze
patent: 4845579 (1989-07-01), Wilkinson, Jr.
patent: 4872767 (1989-10-01), Knapp
patent: 4893206 (1990-01-01), Shtipelman et al.
patent: 4896239 (1990-01-01), Ghose
patent: 4898481 (1990-02-01), Hamblin
patent: 4900165 (1990-02-01), Kun et al.
patent: 4901014 (1990-02-01), Riegger et al.
patent: 4979063 (1990-12-01), Ghose et al.
patent: 5088840 (1992-02-01), Radtke
patent: 5099374 (1992-03-01), Ohkita et al.
patent: 5112147 (1992-05-01), Imamura et al.
patent: 5130873 (1992-07-01), Yumura et al.
patent: 5161077 (1992-11-01), Jabbari
patent: 5432663 (1995-07-01), Ichihara
patent: 5486965 (1996-01-01), Yoshida et al.
K. Mori et al., "A Dual-Stage Magnetic Disk Drive Actuator Using a Piezoelectric Device for a High Track Density" IEEE Transactions on Magnetics, vol. 27, No. 6, Nov. 1991 pp. 5298-5300.

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