US PATENT SUBCLASS 73 / 264
.~.~.~.~ Duplex

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

861  DF  VOLUME OR RATE OF FLOW {23}
232  DF  .~ Expansible chamber {6}
262  DF  .~.~ Diaphragm or collapsible wall {2}
263  DF  .~.~.~ Multiple diaphragm {3}
264.~.~.~.~ Duplex

DEFINITION

Classification: 73/264

(under subclass 263) Meters wherein the movable diaphragms define a plurality of measuring chambers for each of which a distributing valve or valves are provided. The distributing valves for one measuring chamber are moved wholly or partly in consequence of movement of the diaphragm in the other measuring chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

243, for duplex reciprocating piston or cylinder type.