Relief valve
US4109675A · kind A · utility
4Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Apr 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88038
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A relief or other valve with a soft seal for sealing at high pressures. The seal is independently movable and at least partially pressure balanced for protection against seal damage and deformation. A hard seat is provided for engagement by a hard valve wherein a lost motion connection is provided between the seal and hard valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.