Temperature responsive flow control valve
US5813601A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/123
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature responsive flow control valve has a plunger type actuator positioned in a fluid flow passageway between a valve head and an adjustable abutment member. The actuator includes a canister filled with a heat expansible material which expands upon heating to drive the actuator from the canister so as to engage the valve head and drive it out of seated engagement with a valve seat against the biasing force of a spring. The abutment member is axially adjustable toward and away from the valve seat to adjust the distance therebetween. By adjusting the distance between the abutment member and the valve seat the temperature at which the actuator expands to a sufficient degree to open the valve may be adjusted. A controlled leak through the valve is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.