Control for furnace flue damper
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United States of America Patent
Stats
-
Apr 28, 1981
Grant Date -
N/A
app pub date -
May 24, 1979
filing date -
May 24, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pivotal vane carrying member secured to the damper for a furnace flue normally maintains the damper by gravity in an open position. An electric motor driven air blower discharges air against the vanes of the pivotal member to pivot the latter and damper to a closed position when no fuel is supplied to the furnace. Otherwise power for the blower motor is shut off and the pivotal member returns by gravity to its normal flue-open position.
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Family
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Cited Art Landscape
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