Control valves
US4095617A · kind A · utility
8Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1977 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | May 31, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87185
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure compensated directional control valve is provided which automatically regulates the position of the valve depending upon the load so as to maintain a constant flow of fluid by means of check valve members in the spool in the form of a resilient or flexible band in a groove surrounding the valve spool and covering the outer ends of the radial passages from the internal spool chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.