Fluid pressure apparatus

Details Fluid pressure apparatus Fluid pressure apparatus

1974-12-31

1976-04-06

Swisher, S. Clement

Measuring and testing

With fluid pressure

Fluid pressure brake system or unit

73 405R, 116 55, G01M 328

Patent

active

039480836

ABSTRACT:
A fluid pressure comparison apparatus including a pressure responsive member displaceable by the difference between two pressure sources being compared to vent fluid from one of the sources, when its pressure is greater than the other, through a port whose aperture is varied by the displacement of the pressure responsive member. The flow of vented fluid is measured in one of many possible ways to determine the excess pressure. The measurement may be displayed on an indicator or applied to control associated equipment. Various arrangements embodying the apparatus may be used for flow indication, flow control, leakage detection and indication and as warning or control equipment. The pressure responsive member is shown as a nylon reinforced rubber diaphragm but the nature of the member will depend on the absolute as well as the relative values of the pressures compared.

REFERENCES:
patent: 2177520 (1939-10-01), Farmer
patent: 2993199 (1961-07-01), Browne et al.
patent: 3439837 (1969-04-01), Hearne
patent: 3512497 (1970-05-01), Falke

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