Temperature actuated foundation ventilator

Details Temperature actuated foundation ventilator Temperature actuated foundation ventilator

1979-02-01

1981-09-22

Makay, Albert J.

Automatic temperature and humidity regulation

Ventilator type

98 37, 98 29, 98 40VT, 236101D, F24F 700

Patent

active

042905540

ABSTRACT:
A temperature actuated foundation ventilator comprises a rectangular housing with top, bottom and side walls, air permeable screens on the front and rear walls, a plurality of louvers extending between the side walls and a bi-metallic element for actuating the louvers into closed position in cold weather and into open position in hot weather. The bi-metallic element is exposed to the ambient temperature exteriorly of the housing and at the same time enclosed within a protective cover which includes means for positively supporting the bi-metallic element in operative position. Movement of the bi-metallic element responsive to changes in temperature causes corresponding movement of a control link connected to the bi-metallic element exteriorly of the housing and extending into the housing and into pivotal engagement with each of a plurality of louvers journaled in opposed side walls of the housing.

REFERENCES:
patent: 1144856 (1915-06-01), Lenhoff
patent: 1783574 (1930-12-01), Lawler
patent: 2385096 (1945-09-01), McCollum
patent: 2681215 (1954-06-01), Olson
patent: 3436016 (1969-04-01), Edwards
patent: 3528606 (1970-09-01), Witten

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