Plug valve
US4535803A · kind A · utility
11Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1984 |
| Grant date | Aug 20, 1985 |
| Priority date | — |
| Expiry date | Mar 19, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7036
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plug valve is provided with a stem seal wherein a generally frustoconical face is provided at the juncture of stem and plug and the seal is fixed against the frustoconical face with a predetermined constant load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.