Vent damper apparatus

Details Vent damper apparatus Vent damper apparatus

2005-03-22

2005-03-22

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Flue

Vertical

C122S135100, C126S30700R, C126S28500B

Reexamination Certificate

active

06868806

ABSTRACT:
A vent damper apparatus provided for limiting flow of ambient air in a flue of a water heater. The apparatus generally includes a base structured to be connected to a water heater, and a damper assembly, extending from the base and structured to be responsive to a variable flow of exhaust gasses passing from a flue of the water heater. The damper assembly includes a plurality of independently movable dampers, and a frame structured to provide support to the plurality of independently movable dampers.

REFERENCES:
patent: 4269166 (1981-05-01), Worley et al.
patent: 4372485 (1983-02-01), McCabe
patent: 4509499 (1985-04-01), Hebert
patent: 4770160 (1988-09-01), Schimmeyer
patent: 4953510 (1990-09-01), Akkala et al.
patent: 5239947 (1993-08-01), Schimmeyer
patent: 5682841 (1997-11-01), Schimmeyer
patent: 5732692 (1998-03-01), Schimmeyer
patent: 5845632 (1998-12-01), Schimmeyer

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