Motor spindle for hard disc device

Details Motor spindle for hard disc device Motor spindle for hard disc device

1990-10-11

1992-07-21

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9807, 360 9904, 384470, G11B 1702

Patent

active

051328569

ABSTRACT:
A motor spindle for a hard disk device having a pair of ball bearings each having an inner ring, an outer ring, a plurality of balls, a retainer for slidably holding the balls and having a first seal plate provided with outer and inner edges placed adjacent to the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring, and a second seal plate secured to the inner peripheral surface of the outer ring and having an inner edge placed adjacent to the outer peripheral surface of the inner ring with the first seal plates opposed to each other and with one of the second seal plates faced to a clean space for containing a hard disk.

REFERENCES:
patent: 3554621 (1971-01-01), McAllister
patent: 4126362 (1978-11-01), Hamblin et al.
patent: 4133588 (1978-01-01), Earsley
patent: 4737870 (1988-04-01), Okita
patent: 4822183 (1989-04-01), Lederman
patent: 4827168 (1989-05-01), Nakajima
patent: 4915515 (1990-04-01), Rohrer et al.
patent: 4941759 (1990-07-01), Dreschmann et al.

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