Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1993-04-19
1995-08-29
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9807, G11B 1702
Patent
active
054466105
ABSTRACT:
A disk storage device having a clean chamber for a storage disk having a central opening is provided with a brushless drive motor. The drive motor includes a stator and a winding on the stator and further includes a shaft aligned with the rotation axis of said motor, and a magnetically conducting member supported for rotation about the rotation axis and having an inner wall coaxially surrounding the stator. A magnet fixed to the inner wall of the magnetically conducting member is radially spaced from the stator. The disk storage device further includes a hub positioned within the clean chamber and contiguous with the magnetically conducting member so that the hub and the magnetically conducting member together form an outer rotor of the drive motor. The outer rotor has a radially extending flange having a surface which supports said storage disk. A support member contiguous with a portion of a partition of the clean chamber supports the shaft and has a recess receiving a portion of said radially extending flange, whereby the spacing between opposing walls of the clean chamber is reduced. Further, the magnet is spaced from the stator by a substantially cylindrical air gap having a diameter greater than the diameter of the central opening of the storage disk.
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Drawing "GAE Motor": (1 sheet) Papst-Motoren KG.
Drawing "Motor 933 5310 001" (2 sheets) Papst-Motoren KG.
Elsaesser Dieter
von der Heide Johann
Heinz A. J.
Papst Licensing GmbH
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