Fireplace damper assembly
US4649808A · kind A · utility
Inventors
Key dates
| Filing date | Jan 6, 1986 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jan 6, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2213/50
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A damper assembly for sealing a vertical fireplace exhaust including a vertical duct having an outlet communicating with the atmosphere for exhaust of fireplace fumes, mounting means mounted on said vertical duct outlet, a damper downstream of said vertical duct outlet operative to block and open said vertical duct outlet and means to open and close said damper. Easily added improvements include a spark screen assembly downstream of said damper and communicating with said vertical duct outlet, electrical actuation of said damper, automatic control of said actuation by temperature and/or smoke detection means, a fan to provide draft assist, and/or a wind protection hood to provide a better draft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.