US PATENT SUBCLASS 366 / 157.2
.~.~.~.~.~ Screw stirrer

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}
157.1  DF  .~.~.~.~ Coaxial or unitary with stirrer {2}
157.2.~.~.~.~.~ Screw stirrer {1}
157.3  DF  .~.~.~.~.~.~> Vertical axis

DEFINITION

Classification: 366/157.2

Screw stirrer:

(under subclass 157.1) Subject matter wherein (a) the stirrer moving about the axis aligned with the screw conveyor is a screw-type stirrer, or (b) the screw conveyor extends into the mixing chamber to serve as the stirrer.