Temperature actuated flow restrictor
US6450412B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Apr 10, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A thermostat valve 10 is provided for controlling gas flow to an infrared catalytic heater 26. The thermostat valve includes a thermally responsive snap member 50, 64 positioned within a housing central flow path and moveable with respect to the housing between open and closed positions. An elastomeric seal 54 supported on the housing surrounds the central flow path and engages the snap member when in the closed position. A restricted flow path 58, 68 is provided in one of the housing and the snap disk for passing gas to the catalytic heater when the snap member is closed. The thermostat valve is relatively simple yet highly reliable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.