Back pressure valve
US8616289B2 · kind B2 · utility
3Cited by
14References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2008 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Nov 28, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system includes a back pressure valve configured to mount in a mineral extraction system. The back pressure valve comprises a cylindrical body comprising a venting port coaxial with a longitudinal axis of the cylindrical body and a plunger disposed in the venting port, wherein the plunger comprises a stem that extends from the venting port into an adjacent cavity of the cylindrical body. A method of operating a valve, includes biasing a plunger to an open position, biasing a valve locking mechanism to a locked position in relation to a bore of a mineral extraction system, and biasing a plunger to a closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.