Apparatus and method for controlling fluid flow
US6948697B2 · kind B2 · utility
114Cited by
73References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2003 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Apr 23, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8242
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An actuator base, bobbin, and pole piece form a pocket for an armature that a flexible membrane encloses to form an armature chamber filled with an incompressible fluid. The membrane protects the armature from exposure to corrosive fluids flowing in a conduit. Conduit flow can be stopped by driving the membrane against a valve seat. Pressure from the controlled fluid in the conduit is transmitted through the membrane to the fluid within the armature chamber so that the armature does not need to counteract force applied to the membrane by the conduit fluid's pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.