Disk storage drive
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United States of America Patent
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Jun 27, 1989
Issued Date -
N/A
app pub date -
Apr 14, 1989
filing date -
Sep 7, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clean chamber, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial extension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.
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