Fan powered roof venting method and apparatus
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United States of America Patent
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-
Feb 21, 1984
Grant Date -
N/A
app pub date -
Dec 7, 1981
filing date -
Dec 7, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A roof vent for flat built-up roofs, having a truncated pyramid-shaped air stack with a protective cap and an internal fan for inducing upward air flow through a check valve at the upper end of the stack. A solar panel provides power for operating the fan, a thermal switch is employed for enabling the fan above an ambient temperature of 50.degree. F. (10.degree. C.) and a humidistat may be employed for disabling the fan below 50% relative humidity.
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Family
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Cited Art Landscape
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