US PATENT SUBCLASS 73 / 861.63
.~.~.~ Venturi

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

861  DF  VOLUME OR RATE OF FLOW {23}
861.42  DF  .~ Using differential pressure {6}
861.52  DF  .~.~ With restriction {4}
861.63.~.~.~ Venturi {1}
861.64  DF  .~.~.~.~> Inlet or outlet structure

DEFINITION

Classification: 73/861.63

Venturi:

(under subclass 861.52) Subject matter wherein the means producing the differential pressure has flaring ends connected by a constricted middle.