Abstract A dual transducer probe is rotatably driven through tubing in order to measure and record the inside diameter, ovality, wall thickness, wall eccentricity and outside diameter of same. A first transducer is connected to a timing device which is started by the transmission of a pulse generated by the first transducer and stopped by the reception of the reflected energy from the inside wall of the tubing. A second clock or timing device is also connected to the first transducer which is started by the reception of the reflected energy from the inside surface of the pipe and stopped by the reception of reflected energy from the outside surface of the pipe. A second transducer is connected to still another timing device which is started by the transmission of a pulse from same and stopped by the reception of this pulse from the inside surface of the tubing. The elapsed time on the various timing devices, suitably converted to electrical voltages, are added in the case of the first and third timing devices in order to measure the inside diameter and ovality of the tubing; and the elapsed time on the second timing device may be recorded to indicate the thickness and eccentricity of the tubing.
Inventors
👤 Richard O Huffstether
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-23 15:50
CPC Classifications
G; G01; G01B; G01B17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
278 words
An ultrasonic apparatus for dimensional inspection of tubing, and the like, comprising in combination: a pulse generator; a first transducer, pulsed by said pulse generator, adapted for the transmission and reception of ultrasonic energy, and oriented within the tubing for the transmission of a pulsed wave front perpendicular to the wall of said tubing; a first timing device electrically connected to said first transducer so as to be started by the transmission of a pulsed wave front and stopped by the first reception of reflected energy from the tubing; a second timing device electrically connected to said first transducer so as to be started by said first reception of reflected energy and stopped by the second reception of reflected energy from the tubing; a second transducer pulsed simultaneously with said first transducer by said pulse generator and oriented within the tubing for the transmission of a pulsed wave front perpendicular to the wall of said tubing and further oriented with respect to said first transducer so as to transmit wave fronts in a direction 180* from the direction of the wave fronts from said first transducer; a third timing device connected electrically to said second transducer, said third timing device being started by the transmission of said initial pulse and stopped by the reception of the first reflected energy; an elapsed time summing device electrically connected to the first and third timing devices to add their measured intervals indicating the inside diameter and ovality of the tubing; the elapsed time of the second timing device indicating the thickness and eccentricity of the tubing; and means for translating and simultaneously rotating the transducers throughout the length of the tubing.
Claim 2
Dependent Claim
278 words
An ultrasonic apparatus for dimensional inspection of tubing, and the like, comprising in combination: a pulse generator; a first transducer, pulsed by said pulse generator, adapted for the transmission and reception of ultrasonic energy, and oriented within the tubing for the transmission of a pulsed wave front perpendicular to the wall of said tubing; a first timing device electrically connected to said first transducer so as to be started by the transmission of a pulsed wave front and stopped by the first reception of reflected energy from the tubing; a second timing device electrically connected to said first transducer so as to be started by said first reception of reflected energy and stopped by the second reception of reflected energy from the tubing; a second transducer pulsed simultaneously with said first transducer by said pulse generator and oriented within the tubing for the transmission of a pulsed wave front perpendicular to the wall of said tubing and further oriented with respect to said first transducer so as to transmit wave fronts in a direction 180* from the direction of the wave fronts from said first transducer; a third timing device connected electrically to said second transducer, said third timing device being started by the transmission of said initial pulse and stopped by the reception of the first reflected energy; an elapsed time summing device electrically connected to the first and third timing devices to add their measured intervals indicating the inside diameter and ovality of the tubing; the elapsed time of the second timing device indicating the thickness and eccentricity of the tubing; and means for translating and simultaneously rotating the transducers throughout the length of the tubing.