Disk storage device, with hub and drive motor rotor features

Details Disk storage device, with hub and drive motor rotor features Disk storage device, with hub and drive motor rotor features

1995-06-06

1998-09-01

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9908, G11B 1708

Patent

active

058019006

ABSTRACT:
A disk storage device including a housing surrounding a clean chamber, at least one storage disk having a central opening, at least one data head mounted on the housing for movement in operative relationship with the disk within the clean chamber, and motor elements for rotating the disk within the clean chamber. The motor elements include a rotatable member positioned within the clean chamber. The rotatable member has a cylindrical outer surface portion that extends into the central opening of the storage disk and is supported by a shaft and bearing system. A stator including magnetically active parts is mounted on a support member, which also supports the shaft and bearing system. The stator has a magnetic flux-producing section having poles positioned on the same side of the support member as the rotatable member. The rotatable member includes a cylindrically-shaped magnetic flux-producing and conducting element including a ferromagnetic ring and an annular permanent magnet spaced from the poles of the stator by a substantially cylindrical air gap. Further, the outside diameter of the cylindrically-shaped magnetic flux-producing and conducting element is larger 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.

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