US PATENT SUBCLASS 366 / 158.2
.~.~.~.~ Varying diameter screw or shank

Current as of: June, 1999
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366 /   HD   AGITATING

150.1  DF  HAVING SPECIFIED FEED MEANS {16}
154.1  DF  .~ Agitation of material in feeder or supply reservoir {3}
155.1  DF  .~.~ Rotatable impeller {2}
156.1  DF  .~.~.~ Screw conveyor {6}
158.2.~.~.~.~ Varying diameter screw or shank

DEFINITION

Classification: 366/158.2

Varying diameter screw or shank:

(under subclass 156.1) Subject matter wherein the helical blade varies in diameter along its length or the blade surrounds and is mounted on a central shank that varies in diameter.