US PATENT SUBCLASS 73 / 170.14
.~.~ Fluid pressure differential

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

170.01  DF  FLUID FLOW DIRECTION (E.G., WIND SOCK, WEATHER VANE, ETC.) {4}
170.11  DF  .~ With velocity determination {4}
170.14.~.~ Fluid pressure differential

DEFINITION

Classification: 73/170.14

Fluid pressure differential:

(under subclass 170.11) Subject matter wherein the determination of the velocity or the direction of fluid flow is made by measuring or sensing a difference in fluid pressure resulting from the velocity of the fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

700+, for fluid pressure measuring, per se.

861.42, for determining a rate of flow, per se, by measuring differential pressure.