Gas separation – Combined or convertible – Involving communication receiving or transmitting apparatus
Patent
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.
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Bolton Ivor W.
Dixon Gerald
Gibbons Richard N.
International Business Machines - Corporation
Lahtinen Robert W.
Spitzer Robert
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