Apparatus for driving information record medium

Details Apparatus for driving information record medium Apparatus for driving information record medium

1991-06-27

1993-03-16

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 1702

Patent

active

051950022

ABSTRACT:
A hard disk drive includes a housing which has a bottom wall and a cover facing each other. A stator for generating an alernating magnetic field is attached to the bottom wall. First and second bearings are provided on the stator and the cover, respectively, and a rotating shaft is rotatably supported by the bearings. A rotor formed of a magnetic material is fixed to the rotating shaft and has first and second surfaces facing the stator and the cover. A ring-shaped magnet is fixed to the first surface of the rotor to face the stator, and a magnetic disk is mounted on the second surface of the rotor.

REFERENCES:
patent: 4658312 (1987-04-01), Elasser
patent: 4965476 (1990-10-01), Lin
patent: 5038240 (1991-08-01), Isomura

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