Ultrasonic sector scanner
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United States of America Patent
Stats
-
Jan 22, 1985
Grant Date -
N/A
app pub date -
Apr 20, 1982
filing date -
Apr 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ultrasonic sector scanner uses a transducer mounted within an ultrasonic transmitting medium with a rotating cam surface bearing against the transducer for inducing a rocking motion of the transducer between a pair of predetermined limit positions. The cam surface if rotatably driven by a Cardan joint mounted on a motor output shaft to produce an angular velocity of the transducer wherein the relationship between the angle of the transducer and the input shaft to the Cardan joint is a linear function. The position of the transducer is monitored by a code wheel connected to the motor drive to allow either a constant motor rotation or a selective angular positioning of the transducer.
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