Automatic temperature and humidity regulation – Ventilator type
Patent
1980-11-20
1982-05-11
Wayner, William E.
Automatic temperature and humidity regulation
Ventilator type
98 32, 98 40VT, 236101D, 267156, F24F 1308
Patent
active
043289274
ABSTRACT:
An improved temperature-responsive wall ventilator construction comprising a housing having side walls defining an air flow passageway, a plurality of louvers disposed in said passageway and operatively attached to opposed side walls of the housing for pivotal movement to control the flow of air through the passageway. A temperature-responsive bimetallic coil spring located in the passageway and in an opening through one of the louvers controls pivotal movement of the louvers in the passageway to regulate the flow of air therethrough. One end of the coil spring is mounted directly to a face of one of the louvers, and the other end portion of the coil spring extends into an opening in a side wall of the housing to serve as sole pivotal support for one end of the louver. Temperature changes cause expansion and contraction of the spring which causes corresponding pivotal movement of the louver. The wall opening which supports the end of the spring is peripherally notched to permit adjustment of the spring tension to open or close the louvers at a desired air temperature.
The ventilator housing includes an integrally formed front peripheral flange and protective grill with screen member which spans the air flow passageway, and the rear of the housing passageway is enclosed by a removable grill frame with screen to further protect the louvers and temperature-responsive spring from contact with foreign objects.
REFERENCES:
patent: 1801815 (1931-04-01), Livermore
patent: 2975975 (1961-03-01), Weber
patent: 3436016 (1969-04-01), Edwards
patent: 3480178 (1969-11-01), Morgan
patent: 3528606 (1970-09-01), Witten
patent: 3852514 (1974-12-01), Lauben
patent: 4175480 (1979-11-01), Beam, Jr. et al.
patent: 4210279 (1980-07-01), McSwain
Joyce Harold
Manning, Jr,. Wellington M.
Wayner William E.
Wilburn, Jr. Luke J.
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