Control valve system for blowout preventers
US4349041A · kind A · utility
21Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1979 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | Aug 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve system and method are disclosed for blowout preventers having an actuating piston for actuating the closing of the blowout preventer whereby the piston has an opening side and a closing side. The control valve system and method include a means for selectively directing fluid from the opening side of the actuating piston to the closing side of the actuating piston in order to reduce the fluid requirements for closing the blowout preventer and reduce in stalled horsepower requirements thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.