Hydraulic sleeve valve with position indication, alignment, and bypass
US7520333B2 · kind B2 · utility
17Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulic sleeve valve is disclosed that comprises a bypass relief system that provides an indication that the valve has reached a predetermined position, such as, for example, the fully opened or fully closed condition. The bypass relief may also provide a valve control fluid circulation function to filter or otherwise manipulate the control fluid. Also disclosed are flow port alignment systems that maintain the valve flow ports in predetermined relationships.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.