Automatic damper means and controls therefor
US4254759A · kind A · utility
16Cited by
16References
15Claims
0Family size
Inventor
Key dates
| Filing date | Jan 18, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jan 18, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2235/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An automatic damper means and controls, which provide an exceedingly safe automatic damper for the exhaust duct-work of an associated gas furnace or the like, by automatic control of the damper, and automatic control of the gas supply, with redundancy features for providing exceedingly safe operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.