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Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
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3/00
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
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G01F3/02
with measuring chambers which expand or contract during measurement
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G01F3/04
having rigid movable walls
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G01F3/14
comprising reciprocating pistons, e.g. reciprocating in a rotating body
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G01F3/16
in stationary cylinders
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