Temperature responsive pneumatic control device

Details Temperature responsive pneumatic control device Temperature responsive pneumatic control device

1986-09-03

1987-05-19

Tapolcai, Jr., William E.

Automatic temperature and humidity regulation

Motors

Fluid-operated

200 83J, 251 612, G05D 2312

Patent

active

046660828

ABSTRACT:
A temperature responsive pneumatic control device comprising a receptacle containing a temperature responsive fluid therein, the receptacle being in open communication with a first diaphragm which in turn is in movable communication in a piston capable of being displaced by movement of the diaphragm, the piston being in communication with a rod attached to a second diaphragm and extending on both sides thereof such that the end of the rod downstream from the diaphragm is in communication with an air supply valve, which upon displacement gives a pneumatic signal to a pneumatic device such as a ridge vent in a building.

REFERENCES:
patent: 1439750 (1922-12-01), Nelson
patent: 3125111 (1964-03-01), Daly
patent: 3394687 (1968-07-01), Scott
patent: 3689025 (1972-09-01), Kiser
patent: 4016804 (1977-04-01), Turecek
patent: 4214698 (1980-07-01), Josefsson
patent: 4503301 (1985-03-01), Kurtz

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