Measuring and testing – Vibration – By mechanical waves
Patent
1977-05-02
1978-09-12
Queisser, Richard C.
Measuring and testing
Vibration
By mechanical waves
73 19, 73 61R, 128214E, G01N 2902, B06B 304
Patent
active
041127730
ABSTRACT:
A pulse echo device with a concave transmitter-receiver surface located to direct ultrasonic energy to a focal point spaced therefrom transversely of a conduit, the focal point being a distance transversely of the conduit less than twice the thickness of the conduit.
REFERENCES:
patent: 3204458 (1965-09-01), Gillen
patent: 3898637 (1975-08-01), Wolstenholme
patent: 3974681 (1976-08-01), Namery
Beauchamp John P.
Queisser Richard C.
Rhode Island Hospital
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