US PATENT SUBCLASS 416 / 165
.~.~.~ Reciprocated by coaxial screw

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

147  DF  HAVING POSITIVE MEANS FOR IMPELLER ADJUSTMENT {6}
159  DF  .~ Power or manual actuator on non-rotatable part {5}
164  DF  .~.~ Reciprocating sleeve or collar on or rod in impeller shaft {4}
165.~.~.~ Reciprocated by coaxial screw

DEFINITION

Classification: 416/165

(under subclass 164) Apparatus wherein the sleeve, collar or rod is reciprocated by a screw which is coaxial with the shaft.