Relief valve arrangement
US4501291A · kind A · utility
37Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Aug 19, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7905
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Relief valve arrangement comprising a pressure limiting relief valve, the pressure setting thereof can be switched by an auxiliary piston between two or more ranges so that the control pressure, which is obtained by a pilot valve, can be within a region, which can be controlled accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.