Measuring and testing – Vibration – By mechanical waves
Patent
1991-07-16
1994-02-15
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
324220, 73601, G01N 2910, G01N 2924
Patent
active
052856895
ABSTRACT:
An instrument carriage for inspection of piping comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, and an instrumentation arm carried by a shaft system running from the front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360.degree. about its axis. The instrument carriage uses servo motors and pressurized air cylinders for precise actuation of instrument components and precise, repeatable actuation of position control mechanisms.
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Hapstack Mark
Heckendorn, II Frank M.
Park Larry R.
Talarek Ted R.
Zollinger W. Thor
Dixon Harold M.
Finley Rose M.
Moser William R.
The United States of America as represented by the United States
Tumm Brian R.
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