US PATENT SUBCLASS 73 / 235
.~.~.~ Rotary drum

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}
234  DF  .~.~ Wet type (e.g., liquid seal) {4}
235.~.~.~ Rotary drum

DEFINITION

Classification: 73/235

(under subclass 234) Meters wherein a series of measuring chambers are carried by a drum mounted to rotate in a sealing liquid. During continuous rotation of said drum, definite volumes of the fluid to be metered are successively trapped in said compartments by the sealing liquid and then released thereby to an exhaust passage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, for the rotary tank or bucket types.