Rotary seal for vacuum and pressure systems
US4114903A · kind A · utility
3Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Aug 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/913
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotary seal device for pressurized gas and vacuum pumping systems comprising an annular member coaxially mounted on the end of a hollow rotary shaft and having a spring-loaded carbon face pressing against a ceramic disc secured in coaxial alignment with the end of a stationary pipe fitting within a housing member having a threaded end cap for adjusting the pressure between the carbon face and ceramic disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.