Apparatus for controlling hydraulic flow of liquid under pressure in a pipeline
US4596263A · kind A · utility
28Cited by
3References
2Claims
0Family size
Inventor
Key dates
| Filing date | Dec 5, 1983 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Dec 5, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7847
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides a dual valve apparatus for controlling hydraulic flow of liquid under pressure in a pipeline and which closes off the flow of liquid in a manner which minimizes surge pressure in the pipeline. The dual valve apparatus comprises a check valve of the swing-flap type with a pressure relief valve mounted in the check valve member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.