Flow control valve
US7748684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2006 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D7/0635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention has been made to provide a flow control valve capable of preventing adhesion between a fixed core and a movable core and increasing an attractive force, so that flow control can be performed with high accuracy. In a flow control valve 10, a first fixed core 23a is fixed in an upper part of a coil bobbin 21, a second fixed core 23b is fixed in a lower part of the coil bobbin 21, and the movable core 24 is formed at its lower end with a flange 24a having a diameter larger than an inner diameter of the coil bobbin 21. The movable core 24 is placed inside a cylindrical part 28a of the flared pipe 28 so that a distance D1 between the first fixed core 23a and the movable core 24 is larger than a distance D2 between the flange 24a and a disc part 28b of the flared pipe 28.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.