Disk storage drive

Details Disk storage drive Disk storage drive

1985-08-21

1987-04-14

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

310156, G11B 5012

Patent

active

046583122

ABSTRACT:
Disk storage drive for receiving at least one storage disk provided with a central opening. The disk drive is provided with an outer rotor type driving motor having a rotor casing mounted by means of a shaft in a bearing system so as to rotate relative to a stator and receive the storage disk. The stator includes magnetically active parts. At least that part of the rotor casing receiving the storage disk is made from a non-ferromagnetic material and carries the shaft either directly or by means of a hub. A shield made from a ferromagnetic material is provided as an inner part of the rotor casing. The shield envelopes the circumference and one end of the magnetically active parts of the driving motor. The outer diameter of the rotor casing is smaller than the central opening of the storage disk.

REFERENCES:
patent: 3691542 (1972-09-01), Gabor
patent: 3706085 (1972-12-01), Mowrey
patent: 3845339 (1974-10-01), Merkle
patent: 4031558 (1977-06-01), Kusaka
patent: 4150406 (1979-04-01), Stollorz
patent: 4337491 (1982-06-01), Hasler
patent: 4438542 (1984-03-01), Schuh

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