US PATENT SUBCLASS 416 / 24
.~ Cyclic movement of member or part

Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

23  DF  WITH MEANS MOVING WORKING FLUID DEFLECTING WORKING MEMBER PART DURING OPERATION (E.G., AILERON, ETC.) {1}
24.~ Cyclic movement of member or part

DEFINITION

Classification: 416/24

(under subclass 23) Apparatus wherein the working member impelling motion is regular and recurrent (e.g., oscillatory, rotary, etc.) and the working member or flowvarying member assumes a changed operative relationship to the working fluid at a predetermined point in the cycle of operation.