Seal for turning valve bodies, in particular for valves in nuclear-engineering plants
US4818469A · kind A · utility
2Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1986 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Oct 27, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/71
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The seal for turning valve bodies, in particular for valves in radioactive lants, is composed of a molded element of flexible graphite which is coated with a thin, flexible tantalum layer. The tantalum enclosure surrounds the graphite molded element, preferably all around. The tantalum layer is sufficiently thin so that it remains flexible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.