Adjustable fresh air damper for combustion

Details Adjustable fresh air damper for combustion Adjustable fresh air damper for combustion

1981-12-02

1983-10-04

Yeung, James C.

Stoves and furnaces

Liquid heater

126143, 126288, 126285A, F24B 118

Patent

active

044072643

ABSTRACT:
An adjustable fresh air damper for combustion air is provided. Said invention consists of a front plate having a central aperture, an air intake plate having a plurality of apertures and means for holding the front plate against a firebrick inner wall and the air intake plate against an outer wall of a rear wall of a fireplace having an aperture therethrough. A slide door is provided that is gravity operated with a means for guiding the slide door affixed to the front plate so that the slide door can go to an up position exposing the central aperture in the front plate allowing ambient outside fresh air to enter the fireplace and the slide door can go to a down position covering the central aperture in the front plate preventing ambient outside fresh air from entering the fireplace.

REFERENCES:
patent: 948007 (1910-02-01), Doane
patent: 980304 (1911-01-01), Ljungberg
patent: 2003154 (1935-05-01), Menough
patent: 4106475 (1978-08-01), Mayes
patent: 4248206 (1981-02-01), Orthey, Jr.

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