US PATENT SUBCLASS 73 / 202
.~ Proportional


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

861  DF  VOLUME OR RATE OF FLOW {23}
202.~ Proportional {2}
202.5  DF  .~.~> Thermal sensing of flow
203  DF  .~.~> With valved proportioning means


DEFINITION

Classification: 73/202

(under subclass 861) Devices for separating from a main flow a definite proportion thereof and metering such separated portion as a measure of the volume or rate of the main flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

254, for rotary piston and cylinder meters with a compensating by-pass.

152.29+, for a flowmeter for determining a characteristic of a borehole, a casing, or a drill rigging.

SEE OR SEARCH CLASS

137, Fluid Handling, 98+, particularly subclass 101 for flow dividers, per se, which are self-proportioning, and subclasses 599+ and 861+ for other flow dividers, per se.