Ventilator actuator

Details Ventilator actuator Ventilator actuator

1984-04-16

1985-10-15

Wayner, William E.

Automatic temperature and humidity regulation

Snap-acting

Including a permanent magnet

236 49, 236 99F, G05D 2310

Patent

active

045469199

ABSTRACT:
A ventilator actuator is provided for opening and closing a ventilator opening having a diaphragm secured to a closure member mounted for pivotal movement about an axis to form a reservoir for a heat responsive fluid between them, the diaphragm normally being retracted at a first temperature and extended at a second elevated temperature. An actuating member has one end secured to the diaphragm and spaced from the pivotal axis, the other end of the actuating member is anchored such that when the diaphragm expands the actuating member causes the closure member to pivot to open the ventilating opening. When the diaphragm retracts the closure member is caused to pivot back to close the ventilating opening.

REFERENCES:
patent: 1652216 (1927-12-01), Replogle
patent: 3027090 (1962-03-01), Zerhan, Jr.
patent: 3799432 (1974-03-01), Schneider
patent: 3862718 (1975-01-01), Butler
patent: 4071190 (1978-01-01), Ford, Jr.
patent: 4210277 (1980-07-01), Kolt
patent: 4236668 (1980-12-01), Prikkel, III
patent: 4402455 (1983-09-01), Kolt

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