US PATENT SUBCLASS 73 / 236
.~.~.~ Oscillating bell or 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}
236.~.~.~ Oscillating bell or drum

DEFINITION

Classification: 73/236

(under subclass 234) Meters wherein the bell or chambered drum is mounted in a sealing liquid for oscillation about a pivot. The bell or drum in oscillating forms an expansible chamber or chambers with said sealing liquid wherein successive charges of fluid to be metered are measured.