G - Physics – 01 – N
Patent
G - Physics
01
N
349/29
G01N 29/00 (2006.01) G01N 29/22 (2006.01) G01N 29/265 (2006.01) G01N 29/30 (2006.01)
Patent
CA 1230946
17 ABSTRACT OF THE DISCLOSURE Calibration apparatus for calibrating an ultra- sonic transducer array by moving it along an arcuate calibration test member, includes four upright posts interconnected by a rectangular carriage which is slidably movable vertically along the posts. A horizontal pivot shaft is rotatably mounted on the carriage. Fixed to the shaft and depending therefrom are two pendulum arms, interconnected at their lower ends by a pair of cross bars on which is slidably mounted a mounting block. An attach- ment rod is vertically slidably movable in the mounting block and carries a coupling joint at its lower end for mounting the transducer array. A reversible gearmotor drives the pivot shaft through a chain and sprocket assem- bly in an oscillating motion Backlash in the gear train is reduced by a bias weight.
474238
Ferree Herbert E.
Klinvex Daniel E.
Vestovich Robert P.
Oldham And Company
Westinghouse Electric Corporation
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