Multifunction valve
US4518004A · kind A · utility
11Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1983 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Nov 21, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87241
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve combining in a single unit a multiplicity of functions including isolation, thermal and pressure relief, return check and bypass. The valve includes a pair of spool valves, one slidably positioned within the other, disposed with a bore in a housing and interconnected with system pressure and return and an appropriate control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.