Breather filter unit for magnetic disk drive

Details Breather filter unit for magnetic disk drive Breather filter unit for magnetic disk drive

1994-11-29

1996-12-31

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 3314

Patent

active

055900011

ABSTRACT:
A breather filter unit for a magnetic disk drive including a base and a cover fixed to the base, the cover having a vent. The breather filter unit includes a casing fixed to an inner surface of the cover, the casing having a vent inlet communicating with the vent of the cover and a vent outlet communicating with an inside of the magnetic disk drive, and a first filter contained in the casing at a position adjacent to the vent inlet, the first filter being formed from a plurality of fibers extending in a direction substantially parallel to that of an air flow from the vent inlet to the vent outlet. The breather filter unit further includes a second filter bonded to the casing so as to cover the vent outlet, and an activated carbon layer contained in the casing at a position between the first filter and the second filter.

REFERENCES:
patent: 4863499 (1989-09-01), Osendorf
patent: 5012360 (1991-04-01), Yamaguchi et al.
patent: 5075807 (1991-12-01), Inoue et al.
patent: 5367417 (1994-11-01), Brown et al.
patent: 5417743 (1995-05-01), Dauber

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