Sealed disc drive assembly with internal air filter
US4710830A · kind A · utility
18Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Oct 22, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1446
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An air filter assembly 45, 46, 47 is disposed inside a hermetically sealed housing 1 which encloses fixed hard discs 2 with its intake directly facing a spiralling centrifugal air flow generated by the rotating discs. An air guide or duct 71, 72, 73 communicates the clean air leaving the filter outlet with the low pressure area at the center of the discs. An increased pressure differential across the filter and improved filtration efficiency results. Internal partitions 62, 64 may also be provided to channel the air flow towards the filter inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.