Measuring and testing – Vibration – By mechanical waves
Patent
1982-09-03
1984-06-19
Birmiel, Howard A.
Measuring and testing
Vibration
By mechanical waves
73644, 310336, G01N 2900
Patent
active
044547641
ABSTRACT:
An ultrasonic imaging module including a housing having an internal fluid-filled chamber, and an ultrasonic transducer producing a beam of ultrasonic energy. The transducer includes a piezoelectric transducer element and a ball-shaped ultrasonic window rotatably mounted in a bearing in one wall of the chamber for transmitting the beam of ultrasonic energy to the object to be ultrasonically scanned while rolling on the object. A source of pressured fluid is connected to the chamber and the relative size of the bearing and roller-ball window are such that a film of ultrasonic coupling fluid is applied from the chamber to the surface of the object to be scanned as the roller-ball window turns in the bearing during the scanning process. An ultrasonic lens mounted in the chamber between the transducer element and the ball-window compensates for the effect of the sphericity of the window on the ultrasonic beam.
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Birmiel Howard A.
Breimayer Joseph F.
Klepinski Robert J.
Medtronic Inc.
Rooney John L.
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