Disc drive dynamic seal
US4429336A · kind A · utility
13Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Sep 28, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rigid magnetic disc memory apparatus having an aperture formed in the base such that contaminants from the bearings are removed before they can migrate into the vicinity of the discs. In a preferred embodiment the aperture is located in the region of high pressure created by a rotor and stator assembly. The pressure differential causes air and contaminants to flow out of the disc drive enclosure. The pressure differential across the aperture is increased by connecting a duct between the aperture and the inlet side of the clean air supply blower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.