Measuring and testing – Fluid pressure gauge – Mounting and connection
Patent
1991-04-02
1992-07-21
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Mounting and connection
73115, 731468, 73732, 137228, 137230, G01L 700
Patent
active
051312751
ABSTRACT:
A gas pressure gage connected to a pressure tank includes a solid stem body which has a gas channel extending from the first end to the second end thereof. The solid stem body further includes a cavity which communicates the gas channel with the exterior of the gage. A spring-biased piston rod disposed in the cavity, provided with a sealing member, seals the gas channel unless the gas pressure in the gas channel exceeds the force of the spring member, or the piston rod is operated manually.
REFERENCES:
patent: 1270952 (1918-07-01), Jones
patent: 1330311 (1920-02-01), Engelmann
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