Flow control device
US7571738B2 · kind B2 · utility
3Cited by
11References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2006 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Dec 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7843
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A flow control device having a first port, a second port, a third port and the movable member. In a first mode, the movable member seals the second port while allowing fluid flow between the first and third ports, wherein the differential pressure between the first port and third port, during the first mode, is about zero. In the second mode, the movable member seals the first port while allowing fluid flow between the third port and second port, wherein the movable member is adapted to transition from the first mode to the second mode in response to a small change in differential pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.