Ventilation – Having inlet airway – Including automatic control means
Patent
1995-08-17
1998-03-03
Joyce, Harold
Ventilation
Having inlet airway
Including automatic control means
200297, 200314, 34030915, 968977, H01H 4304
Patent
active
057228876
ABSTRACT:
An automatic programmed ventilation control system for operating a fan includes a fan drive circuit; a duty, cycle control circuit including means for selecting a duty cycle and means for setting the selected duty cycle; a timing circuit including means for selecting the time of day and means for setting the selected time of day; a fan speed control circuit including means for selecting a fan speed and means for setting the selected fan speed; and a manual override switch circuit for overriding the set duty cycle and fan speed for operating the fan at a predetermined speed for a preselected period of time.
REFERENCES:
patent: 4344000 (1982-08-01), Schornack et al.
patent: 4360739 (1982-11-01), Goldstein
patent: 5189412 (1993-02-01), Mehta et al.
Raymer Paul H.
Wolfson Jason
Joyce Harold
Tamarack Technologies Inc.
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