Enclosed disc drive with improved air flow

Details Enclosed disc drive with improved air flow Enclosed disc drive with improved air flow

1979-01-26

1981-08-04

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 1704

Patent

active

042825547

ABSTRACT:
An enclosure for a sealed disc drive includes a bottom support member and a top cover for mating with the bottom support member. The bottom support member includes a filter mounted on the inner surface and in a peripheral position thereof, and air guide means for directing air flow created by a spinning disc through the filter, the cover includes a second breather filter through which outside air can enter the enclosure. Air cleanliness within the enclosure is improved by providing a positive air pressure differential between the space below an enclosed disc and in the proximity of the spindle bearing seals and the space above the enclosed disc. The positive air pressure differential can be created by obstructing air flow below the disc.

REFERENCES:
patent: 4008492 (1977-02-01), Elsing
patent: 4054931 (1977-10-01), Bolton et al.
patent: 4130845 (1978-12-01), Kulma
Charlton, "Disk Pack Air Pump", IBM Tech. Disc. Bull., vol. 11, No. 8, Jan. 1969, p. 951.

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