Fail safe automatic flue damper mechanism
US4619602A · kind A · utility
3Cited by
2References
2Claims
0Family size
Inventor
Key dates
| Filing date | Jan 14, 1985 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Jan 14, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23L13/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention is an electronically controlled, automatically operated flue damper mechanism which is totally fail safe in operation. The mechanism is to be fitted within the draft hood of a thermostatically controlled heating device such as a gas or oil fired furnace. The electronic control circuitry of the damper being integrated with that of the heating device to which it is fitted. The action of the damper being to close the flue a sufficient time after combustion has stopped, to allow all noxious gases from combustion to have left the flue, and to open the flue before combustion can begin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.