Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1980-01-29
1981-12-15
Woodiel, Donald O.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73 405R, G01F 2314
Patent
active
043052843
ABSTRACT:
A method and apparatus for using pressure changes to indicate volume chan in fluid level indicators or other devices with the required degree of sensitivity and accuracy is provided. A change in fluid volume is indicated by detection and display of a concurrent pressure change in a captive volume of air.
REFERENCES:
patent: 1396844 (1921-11-01), Huffman
patent: 1560350 (1925-11-01), Seferlis
patent: 1981354 (1934-11-01), Goerg
Marchitto Michael J.
Rybicki Robert C.
Durigon A. P.
Lall P. C.
Sciascia R. S.
The United States of America as represented by the Secretary of
Woodiel Donald O.
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