Ferromagnetic/fluid valve actuator
US6609698B1 · kind B1 · utility
60Cited by
37References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Oct 25, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An actuator base (16), bobbin (14), and pole piece (24) form a pocket for an armature (30) that a flexible membrane (40) encloses to form an armature chamber filled with an incompressible fluid. The membrane (40) protects the armature (30) from exposure to corrosive fluids flowing in a conduit (44). Conduit flow can be stopped by driving the membrane (40) against a valve seat (54). Pressure from the fluid in the conduit (44) is transmitted though the membrane to the fluid within the armature chamber so that the armature does not need to counteract force applied to the membrane (40) by the conduit fluid's pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.