Measuring and testing – Vibration – By mechanical waves
Patent
1979-08-20
1981-08-25
Yasich, Daniel M.
Measuring and testing
Vibration
By mechanical waves
73639, G01N 2904
Patent
active
042852439
ABSTRACT:
A pipe inspection device for ultrasonically inspecting the wall of a pipe includes a support arm which is pivotally attached at one end to an inspection vehicle and at its other end pivotally supports a spindle at the end of which two wheels are rotatably mounted. One or more ultrasonic transducers are disposed inside each wheel so that when the vehicle is moved along the pipe, the wheels come into contact with the pipe such that the transducers are aligned in predetermined positions relative to the pipe. The device may be arranged for insertion in the bore of the pipe, or for assembly around the outside of the pipe.
REFERENCES:
patent: 3205435 (1965-09-01), Nuttall
patent: 3413653 (1968-11-01), Wood
patent: 3478576 (1969-11-01), Bogle
patent: 3754275 (1973-08-01), Carter et al.
patent: 3786684 (1974-01-01), Wiers et al.
patent: 4055990 (1977-11-01), Topping
patent: 4105972 (1978-08-01), Smith
patent: 4146791 (1979-03-01), Dahl et al.
patent: 4170902 (1979-10-01), Pallan
patent: 4217782 (1980-08-01), Pont
British Gas Corporation
Yasich Daniel M.
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