Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1974-01-29
1976-03-09
Woodiel, Donald O.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73 675R, G01L 900
Patent
active
039423816
ABSTRACT:
An ultrasonic pressure test method and apparatus that utilizes a reflectoscope, and an oscilloscope and an ultrasonic crystal and wherein the length of time that it takes for an echo to be returned is measured to provide a method and means for measuring and using the ultrasonic readings to determine whether the contents or pressure of a bottle, container or other member is proper or of the desired or safe quantity.
REFERENCES:
patent: 2458771 (1949-01-01), Firestone
patent: 2527208 (1950-10-01), Berry et al.
patent: 2978899 (1961-04-01), Kritz
patent: 3093998 (1963-06-01), Albertson et al.
patent: 3251221 (1966-05-01), Vogel et al.
Brown William G.
Paxton Lee C.
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