US PATENT SUBCLASS 73 / 1.26
.~.~.~ Nozzle or venturi

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

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.16  DF  .~ Volume of flow, speed of flow, volume rate of flow, or mass rate of flow {12}
1.25  DF  .~.~ Orifice or restriction {1}
1.26.~.~.~ Nozzle or venturi

DEFINITION

Classification: 73/1.26

Nozzle or venturi:

(under subclass 1.25) Subject matter wherein the proving or calibrating apparatus or the device being proven or calibrated comprises (a) a tube having a taper or a constriction through which the fluent material passes or (b) a means having flared ends connected by a constricted middle through which the fluent material passes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

861.62+, for utilizing an apparatus for measuring a differential device having a restriction and a flow nozzle to make a volume or rate of flow determination.