Independent biasing means for automatic flue damper

Details Independent biasing means for automatic flue damper Independent biasing means for automatic flue damper

1978-04-27

1980-06-03

Wayner, William E.

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

251133, 251313, 126285B, 431 20, G05D 2300, F16K 500

Patent

active

042057833

ABSTRACT:
For a vent or flue damper of the type in which the damper is closed by an electrically energized actuator when the furnace is off and the actuator has first biasing means to open the damper when the actuator is deenergized, a second biasing means such as a torsion spring, independent of the first biasing means, is associated directly with the damper shaft and is adapted to always move the damper to an open position in the absence of the actuator.

REFERENCES:
patent: 4039123 (1977-08-01), Frankel
patent: 4102629 (1978-07-01), Feinberg

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