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US4118040A · kind A · utility
6Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1976 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Aug 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The pressure chamber located in the sealing member is sub-divided by webs into a plurality of individual sub-chambers with restrictors between each sub-chamber and the barrier medium supply in order to obtain a uniform adjustment over the entire periphery of the gap between the sealing member and rotating part. Various types of means such as pressure-filled tubes are used to bias the sealing member from within a groove in the stationary part towards the rotatable part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.