Communications: electrical – Selective
Patent
1974-08-21
1976-03-16
Farley, Richard A.
Communications: electrical
Selective
73 678R, G01S 966, G01N 2900
Patent
active
039449637
ABSTRACT:
Apparatus for measuring deviation from straightness, or wall curvature or axial curvature, of an elongated member by ultrasonic pulse-echo techniques comprises at least three ultrasonic transducer means and an associated processing system.
In operation, each of the transducer means transmits ultrasonic search signals towards the elongated member and detects signals reflected from diametrically opposed points on a reference surface of the member. From the transmitted search and the received echo signals, a signal is generated in the associated processing system indicating the distance between the face of each transducer means and the associated reference points on the wall surface of the elongated member. The generated distance signals can then be processed to generate signals indicating wall curvature and axial curvature in the plane formed by the diametrically opposed points.
REFERENCES:
patent: 2629082 (1953-02-01), Hare
patent: 2640190 (1953-05-01), Rines
patent: 2801403 (1957-07-01), Kietz
patent: 3380293 (1968-04-01), Murphy
patent: 3577773 (1971-05-01), Kubo et al.
patent: 3820387 (1974-06-01), Grabendorfer et al.
Farley Richard A.
Pfeifle E. W.
Western Electric Co. Inc.
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