Pressure gauge for indicating small pressure changes

Details Pressure gauge for indicating small pressure changes Pressure gauge for indicating small pressure changes

1977-03-07

1978-06-27

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

116114PV, G01L 700

Patent

active

040967590

ABSTRACT:
A pressure gauge for indicating small pressure changes includes a sac of thin flexible film material communicable with and inflatable by the pressure to be indicated, during use. The sac is supported by a base so that the sac effectively inflates in a generally vertical direction, during use. A transmission plate is pivotally mounted to the base and bears against the sac under the influence of its own weight. A pointer is directly connected to the transmission plate to indicate the position thereof under the influence of pressure in the sac to effect the indication of that pressure.

REFERENCES:
patent: 2252874 (1941-08-01), Vischer, Jr.
patent: 3376750 (1968-04-01), Ekstrom, Jr.
patent: 3745823 (1973-07-01), Hunter

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