Exhaust flue cap and filter device for a gas fired appliance

Details Exhaust flue cap and filter device for a gas fired appliance Exhaust flue cap and filter device for a gas fired appliance

2008-06-25

2011-12-27

McAllister, Steven B (Department: 3749)

Ventilation

Chimney or stack

Chimneytop or stacktop structure

Reexamination Certificate

active

08083574

ABSTRACT:
An exhaust flue cap and filter device for a gas fired appliance in communication with an exhaust flue opening having an outer pipe and a coaxial liner. The device includes a tubular cap with an open lower end, an opposed open upper end, and a plurality of ventilation holes wherein the cap is receivable over the flue opening. A removable top is attached to and closes the open upper end of the tubular cap. A filter tray having a smaller diameter than the tubular cap includes a ledge extending radially inward from the tray. A removable catalytic converter filter insert within the tubular cap is supported on the ledge.

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