Pressure control unit for the control of the pressure of at leas

Details Pressure control unit for the control of the pressure of at leas Pressure control unit for the control of the pressure of at leas

1978-08-30

1981-03-10

Cline, William R.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

G05D 1103

Patent

active

042547903

ABSTRACT:
A pressure control unit comprises a central reference chamber in which the gas pressure is adjustable and one or more control chambers, each of which is separated from the reference chamber by a membrane system which consists of two interconnected membranes having a predetermined ratio of their surface areas. Each membrane system is connected to a valve for controlling the flow of a gas to the respective control chamber whereby the pressure therein varies in proportion to the reference pressure.

REFERENCES:
patent: 1035576 (1912-08-01), Goodwin et al.
patent: 1573079 (1926-02-01), McKee
patent: 3324872 (1967-06-01), Cloud

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