US PATENT SUBCLASS 73 / 861.43
.~.~ With time integration

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}
861.43.~.~ With time integration {2}
861.44  DF  .~.~.~> By electrical means
861.45  DF  .~.~.~> By mechanical means {1}

DEFINITION

Classification: 73/861.43

With time integration:

(under subclass 861.42) Subject matter wherein means is provided for integrating the pressure differential or kinetic head with respect to time, so that a measure of the total flow over a period may be obtained.

SEE OR SEARCH THIS CLASS, SUBCLASS:

183, for differential pressure-type meters having integrating means and forming ships' log navigating devices.