US PATENT SUBCLASS 73 / 861.33
.~.~ With turbine in a swirl chamber

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

861  DF  VOLUME OR RATE OF FLOW {23}
861.32  DF  .~ By measuring swirl rate imparted by static means {2}
861.33.~.~ With turbine in a swirl chamber

DEFINITION

Classification: 73/861.33

With turbine in a swirl chamber:

(under subclass 861.32) Subject matter wherein a swirl chamber is included and the rate of swirl is measured by a turbine located in the swirl chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

152.34, for a flowmeter for determining a characteristic of a borehole, a well casing, or a drill rigging by measuring a

rotation rate of an element about a rotation axis.