Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1995-06-07
1998-08-18
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9807, 369269, 310 67R, G11B 1702, H02K 516
Patent
active
057965480
ABSTRACT:
A disk storage drive is provided with a brushless drive motor having a stator with a winding. An external rotor housing including a permanent magnet coaxially surrounds the stator and is spaced therefrom by a substantially cylindrical air gap. A hub is provided that is concentric to the rotor housing and is connected to the rotor housing for rotation therewith. A bearing above the stator rotatably supports an upper end of the rotor housing on a stationary shaft and a bearing below the stator braces the open end of the rotor housing by a ring element having substantially the same heat expansion characteristics as the rotor housing.
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Hans Helmut
Oelsch Jurgen
Levy Stuart S.
Papst Licensing GmbH
Watkins Kevin M.
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