US PATENT SUBCLASS 73 / 265
.~.~.~.~ With rotary valve

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
265.~.~.~.~ With rotary valve {1}
266  DF  .~.~.~.~.~> Crank operated {1}

DEFINITION

Classification: 73/265

(under subclass 263) Meters wherein a rotary valve or valves are provided to control the induction and eduction to all of the chambers defined by the diaphragms. The term "rotary" is intended to include valves which have orbital movement wherein one point on the valve continuously faces in the same direction.