Fireplace damper and air flow control
US4418680A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | May 6, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24B1/1895
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A damper and air flow control for use with fireplaces or stoves having a plurality of heat tubes extending through the exhaust passage for smoke and other products of combustion includes a plurality of slats secured in spaced side-by-side relation to one another. Each slat is adapted to be positioned above a heat tube when the damper is in open position so as to leave the spaces between the heat tubes substantially unobstructed. Each slat has a width greater than the space between the heat tube over which it is positioned when the damper is open and an adjacent heat tube so that the slats may be moved to a position where they substantially block the spaces between the heat tubes. Control apparatus is provided to move the slats between open, closed, or partially closed positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.