US PATENT SUBCLASS 73 / 861.21
.~.~ Caused by fluid interaction with obstacle

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

861  DF  VOLUME OR RATE OF FLOW {23}
861.18  DF  .~ By measuring vibrations or acoustic energy {5}
861.21.~.~ Caused by fluid interaction with obstacle {1}
861.22  DF  .~.~.~> Vortex shedders {2}

DEFINITION

Classification: 73/861.21

Caused by fluid interaction with obstacle:

(under subclass 861.18) Subject matter wherein a body in the flow path either vibrates due to the dynamic effects of the fluid or imparts vibrations to the fluid.