Method for controlling airflow through a disc file spindle

Details Method for controlling airflow through a disc file spindle Method for controlling airflow through a disc file spindle

1991-03-29

1993-01-12

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9703, G11B 3314

Patent

active

051794837

ABSTRACT:
A disk file is presented, having a container (3) for a hub assembly(6) including a stationary spindle (9) attached to the container; a clamp (13) for mounting a disk (11) on a hub (8); bearing means (14, 15), comprising a first bearing (14) located towards one end of the hub (8) and a second bearing (15) located towards the other, for rotatably mounting the hub (8) on the spindle (9); characterized in that the hub assembly (6) further comprises ventilation means (21, 22, 23) for directing an air flow into the hub assembly (6) through the bearing means (14, 15) and out of the hub assembly (6) into the container (3) through a connecting air passage (21) located in the spindle (9) permitting the air to flow through a filter (25). The ventilation means comprises a ventilated spindle (20) having first ventilation ducts (22) extending from the hub assembly into the air passage, and second ventilation ducts (23) extending from the air passage into the container.

REFERENCES:
patent: 4471395 (1984-09-01), Beck
patent: 4562499 (1985-12-01), Mizoshita
patent: 4626941 (1986-12-01), Sawada
patent: 5012359 (1991-04-01), Kohno
IBM Technical Disclosure Bulletin, vol. 26, No. 11, Apr. 1984, "Spindle Seal for Self-Pressurized Head/Disk Assembly" by R. A. Davis and S. K. Moss.

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