Seal for valves
US4881570A · kind A · utility
7Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7504
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve seal having a profiled ring of a rubber elastic material, and an externally threaded supporting ring which is disposed about and vulcanized to the ring. The external portion of the supporting ring projects outwardly beyond the external surface of the profiled ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.