Disk storage drive

Details Disk storage drive Disk storage drive

1989-04-14

1989-06-27

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

310156, 360 9911, G11B 5012, H02K 1700

Patent

active

048435007

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.

REFERENCES:
patent: 3329845 (1967-07-01), Lear
patent: 3596121 (1971-07-01), Chang
patent: 4005490 (1977-01-01), Duncan et al.
patent: 4031558 (1977-06-01), Kusaka
patent: 4062049 (1977-12-01), Dirks
patent: 4275339 (1981-06-01), Burke et al.
patent: 4607182 (1986-08-01), Ballhaus
patent: 4672487 (1987-06-01), Brand

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