Forced air ventilating device

Details Forced air ventilating device Forced air ventilating device

1989-08-07

1990-10-23

Tapolcai, William E.

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

98 413, 13762533, F24F 1312

Patent

active

049645668

ABSTRACT:
An automatically controlled forced air ventilating device for installation in a structural wall and used in controlling the movement of air into and out of a prescribed area. A ventilator apparatus for the device includes a first stationary plate and a second movable plate, each of the plates including apertures therein and a control means for moving the second plate between first and second positions in which the apertures are aligned and not aligned. A fan is attached to the ventilator apparatus for moving air therethrough at times when the second plate is in the second position with the apertures aligned. A sensing means senses prescribed conditions of air and activates the fan and the control means responsive thereto when prescribed levels of air conditions have been exceeded.

REFERENCES:
patent: 328156 (1885-10-01), Tucker
patent: 957776 (1910-05-01), Ilg
patent: 3073525 (1963-01-01), Cislo
patent: 3363536 (1968-01-01), Dean, Jr.
patent: 3645108 (1972-02-01), Houk
patent: 3948154 (1976-04-01), Asakai et al.
patent: 4178841 (1979-12-01), Frank et al.
patent: 4407187 (1983-10-01), Horney
patent: 4715532 (1987-12-01), Sarazen et al.
patent: 4781220 (1988-11-01), Smith

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