Title:
FILTER CONSTRUCTION FOR DISK DRIVES, AND USE
Document Type and Number:
WIPO Patent Application WO2002013945
Kind Code:
A3
Abstract:
A filter construction for use in a disk drive enclosure. The filter construction includes a first portion that removes or reduces contaminants entering the disk drive enclosure from the external atmosphere; the filter construction further includes a second portion that removes or reduces contaminants present within the disk drive enclosure. In one embodiment, the first portion has a diffusion channel in airflow communication with a port extending to the exterior of the enclosure, and may include an adsorbent filter or element. Air exits the first portion in an area of the disk drive enclosure having a low air pressure. The second portion has an adsorbent filter, such as a recirculation filter, which allows air or gas to flow therethrough with little resistance. The filter construction has an exit positioned approximately parallel to the periphery of a disk in the disk enclosure, so that air exiting the filter construction is generally perpendicular to the air currents produced by the spinning disk.
Inventors:
TUMA DANIEL L
Application Number:
PCT/US2001/025692
Publication Date:
June 27, 2002
Filing Date:
August 16, 2001
Export Citation:
Assignee:
DONALDSON CO INC (US)
International Classes:
B01D46/42; B01D53/02; G11B33/14; (IPC1-7): G11B336/14
Domestic Patent References:
| WO2001022422A1 | 2001-03-29 | |||
| WO2001014041A2 | 2001-03-01 |
Foreign References:
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| US5307222A | 1994-04-26 | |||
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| US5030260A | 1991-07-09 | |||
| US4329722A | 1982-05-11 | |||
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| US6208484B1 | 2001-03-27 |
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