Motor for a disc driving device having a hub positioned on inner

Details Motor for a disc driving device having a hub positioned on inner Motor for a disc driving device having a hub positioned on inner

1993-03-25

1995-02-21

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9912, 360 9807, 360 9808, 310 67R, 310 90, G11B 1702, H02K 700

Patent

active

053921780

ABSTRACT:
A motor for a disc driving device having a single straight shaft for rotating a magnetic disc mounted on a hub press-fitted to the single shaft. The single straight shaft is prevented from being driven out of the hub by providing internal threads at both ends of the straight shaft for engaging first and second screws through the internal threads respectively. The first screw causes a clamper to depress a magnetic hard disc against the hub, the second screw is provided to prevent the single straight shaft from being driven out of the hub. The straight shaft abuts a first and second bearing separated by spacer means disposed under the hub in alignment with the first and second inner races of the first and second bearing.

REFERENCES:
patent: 4739425 (1988-04-01), Dierkes et al.
patent: 4775906 (1988-10-01), Suzuki et al.
patent: 4868436 (1989-09-01), Attilio et al.
patent: 4922406 (1990-05-01), Schuh
patent: 5040085 (1991-08-01), Elsasser et al.
patent: 5153470 (1992-10-01), Miyaji et al.
patent: 5200866 (1993-04-01), Fruge et al.
patent: 5274289 (1993-12-01), Wrobel
patent: 5304879 (1994-04-01), Suzuki et al.

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