Zero-clearance firebox

Details Zero-clearance firebox Zero-clearance firebox

1989-12-28

1991-10-01

Yuen, Henry C.

Stoves and furnaces

Fireplaces or accessories

126515, 126531, 110235, F24B 118

Patent

active

050523112

ABSTRACT:
A zero-clearance firebox with a much simplified construction enables efficient air exchange directly through one opening in which solid combustible materials are placed. The firebox has a metal inner shell and an outer shell of lighter gage metal incorporating a plurality of insulating materials in proximity with the outer and inner shells, including a ceramic blanket, rigid insulation, dead air space, and refractory brick. The firebox can be configured into a rectangle, a wedge or a semicircle for placement into a corner or along a wall of a room. The firebox can easily be adapted for use with liquid fuels such as natural gas, propane, etc. Finishing materials can be attached to the firebox to give the appearance of masonry or adobe.

REFERENCES:
patent: 2821975 (1958-02-01), Thulman
patent: 4153036 (1979-05-01), Billmeyer et al.
patent: 4177793 (1979-12-01), Johnson
patent: 4384565 (1983-05-01), Scholz et al.
patent: 4422438 (1983-12-01), Scholz et al.
patent: 4603682 (1986-08-01), Maziasz
patent: 4607611 (1986-08-01), Rice et al.
patent: 4700687 (1987-10-01), Bailey et al.
patent: 7270940 (1942-01-01), Elmore

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