US PATENT SUBCLASS 73 / 260
.~.~.~ With swinging vane

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}
253  DF  .~.~ Rotary piston or cylinder {5}
260.~.~.~ With swinging vane

DEFINITION

Classification: 73/260

(under subclass 253) Rotary piston meters wherein the piston is provided with one or more hinged vanes which are extended to engage the cylinder wall and may be collapsed against the piston in passing the cylinder abutment.

SEE OR SEARCH CLASS

418, Rotary Expansible Chamber Devices,

259+, for rotary expansible chamber devices having positively actuated vanes and subclass 270 for similar devices having movable vanes.