1974-03-22
1976-01-27
Wayner, William E.
52 63, F24F 702
Patent
active
039344940
ABSTRACT:
Disclosed is a power ventilator attached to a roof for ventilating an attic or the like. The power ventilator is provided with a base which attaches to the roof adjacent an opening in the roof. The base has a hollow cylindrical housing which forms an air duct. A plurality of wire supports are used to attach a generally dome-shaped cover and an electrically powered fan and motor to the cylindrical flange. Each wire support has a curved portion which conforms with and contacts an arcuate portion of the cover. Each wire bracket has a flange which extends into the interior of the cylindrical flanged portion to support the fan motor. A screen is attached across the opening between the cover and the cylindrical flanged portion. A thermostat means is connected to the exhaust fan to operate the fan when the temperature in the attic exceeds a first predetermined temperature and disengages the fan when the temperature falls below a second predetermined temperature. A fire prevention means is provided to disengage the fan when the temperature in the attic exceeds a third predetermined temperature and engages the fan when the temperature falls below a fourth predetermined temperature.
REFERENCES:
patent: 2635302 (1953-04-01), Denning
patent: 2926837 (1960-03-01), Coe
patent: 3683427 (1972-08-01), Burkholz
patent: 3788335 (1974-11-01), Hemmelsbach
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