Ultrasonic measuring instrument

Details Ultrasonic measuring instrument Ultrasonic measuring instrument

1981-05-04

1983-06-07

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73622, G01N 2904

Patent

active

043865275

ABSTRACT:
An instrument for distinguishing between gray and ductile cast iron pipes. Signals from a relatively movable pair of ultrasonic probes and a distance transducer are inputs to a circuit for generating a signal related to the velocity of sound through a chord of a pipe.

REFERENCES:
patent: 2932818 (1960-04-01), Lubkin
patent: 2966057 (1960-12-01), Heller
patent: 3229508 (1966-01-01), Sharpe et al.
patent: 3427867 (1969-02-01), Nute et al.

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