Disk file employing dual filters

Details Disk file employing dual filters Disk file employing dual filters

1987-11-16

1989-08-15

Spitzer, Robert

Gas separation

Combined or convertible

Involving communication receiving or transmitting apparatus

55482, 55525, 55DIG39, 360 9801, B01D 4610, G11B 5012

Patent

active

048570877

ABSTRACT:
A disk file 10 employs at least two filters 15,16 for removal of airborne particles, one filter 16 having a relatively coarse mesh and a relatively high rate of airflow and the other 15 having a relatively fine mesh and a relatively low rate of airflow. The fine filter 15 may be combined with a third, breather filter 30 which removes particles from air entering the disk enclosure. The main purpose of the coarse filter 16 is to remove the larger, more damaging particles very rapidly, thereby reducing the risk of damage to the surfaces of the disks 12.

REFERENCES:
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patent: 4054931 (1977-10-01), Bolton et al.
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patent: 4684510 (1987-08-01), Harkins
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patent: 4780872 (1973-12-01), Pall
IBM Technical Disclosure Bulletin, vol. 24, No. 6, Nov. 1981, I. W. Bolton, "Filtration System for Disk File", (2 pages).
IBM Technical Disclosure Bulletin, vol. 27, No. 10A, Mar. 1985, "Auxiliary Internal Recirculating Airflow System", (2 pages).

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