Control to operate a forced air blower
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United States of America Patent
Stats
-
Apr 30, 1991
Grant Date -
N/A
app pub date -
Nov 3, 1989
filing date -
Nov 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic control for a warm air furnace blower including an input circuit for receiving a signal from a thermostat. The signal is delayed by a first adjustable time delay to operate a blower relay, which energizes the blower. When the input signal ceases, a second adjustable time delay serves to delay opening of the blower relay. A second input circuit for receiving an emergency signal operates the blower relay without delay, and the second time delay serves to delay opening of the blower relay after the emergency signal ceases.
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Family
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Cited Art Landscape
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