Thermally activated automatic damper and damper operator

Details Thermally activated automatic damper and damper operator Thermally activated automatic damper and damper operator

1989-04-24

1990-04-24

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236 1G, G05D 2308

Patent

active

049193295

ABSTRACT:
A damper has a frame with a cross bar and a reciprocal blade. A bimetallic element which moves in response to temperature is coupled to the blade and is hingedly coupled to the cross bar so that movement of the bimetallic element in response to temperature causes the blade to move with respect to the frame. The coupling of the bimetallic operator and the frame is accomplished by a biasing hinge which is coupled to the frame and to the bimetallic element to couple the bimetallic element to the frame and control the temperature movement response of the element. The biasing force of the biasing means is adjustable for controlling the temperature movement response of the damper blade. The bimetallic element is a serpentine spring having a plurality of bends and the biasing means is a hinge. The closed position of the blade of the damper, as well as the biased temperature response of the damper, and adjustable by rotation of adjustment screws.

REFERENCES:
patent: 2462198 (1949-02-01), Johnson
patent: 2659535 (1953-11-01), Hotchkins et al.
patent: 3595475 (1971-07-01), Morton
patent: 4223779 (1980-11-01), Griffith
patent: 4235219 (1980-11-01), DeFoe
patent: 4236668 (1980-12-01), Prikkel, III
patent: 4372485 (1983-02-01), McCabe
patent: 4715532 (1987-12-01), Sarozen, Jr. et al.

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