Condition responsive valve construction and method of making the

Details Condition responsive valve construction and method of making the Condition responsive valve construction and method of making the

1977-11-23

1979-12-11

O'Dea, William F.

Automatic temperature and humidity regulation

Motors

Fluid-operated

1371165, 1376275, 236100, G05D 2302

Patent

active

041779240

ABSTRACT:
A condition responsive valve construction for varying the output pressure of the valve construction in relation to a movable part of a condition responsive device that is moved in relation to the condition sensed thereby, the valve construction having a housing provided with an inlet to be interconnected to a fluid pressure source and an outlet separated from the inlet by a main valve unit and being adapted to be interconnected to vent by a vent valve unit. A biasing spring operatively interconnects the movable part of the condition responsive device to a movable vent valve seat of the vent valve unit to urge the same to an open condition relative to a movable vent valve member by a force that is changeable by the condition sensed by the condition responsive device. A sealing and biasing bellows construction is operatively interconnected to the vent valve seat to tend to urge the same to a closed condition thereof.

REFERENCES:
patent: 2830767 (1958-04-01), Herbenar
patent: 3006552 (1961-10-01), Ferris
patent: 3009678 (1961-11-01), Soderberg et al.
patent: 3135495 (1964-06-01), Ferris
patent: 3303854 (1967-02-01), Churchill
patent: 3848622 (1974-11-01), Cummings
patent: 3853269 (1974-12-01), Graber
patent: 3955760 (1976-05-01), Ridenour et al.

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