Fluid control valve
US7703477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2003 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Sep 6, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7769
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fluid control valve for use with apparatus for medical use. Commercially available valves which operate by electrical, hydraulic or pneumatic means are often expensive and bulky. They may require excessive power to operate them and can be noisy during operation due to moving parts and fluid flow through internal pathways. The valve of the present invention has a valve seal (1) mounted between inlet (A) and outlet ports (B), with the seal including a valve closure member (4) operated by means of a control fluid fed through a control port (C) in the valve body. In operation a pressure differential acting to open and close the valve is set up between the inlet and outlet ports and the control port to operate the valve. This design results in cost savings and performance benefits compared with the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.