US PATENT SUBCLASS 366 / 318
.~.~ Screw-type stirrer

Current as of: June, 1999
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366 /   HD   AGITATING

241  DF  STIRRER WITHIN STATIONARY MIXING CHAMBER {10}
279  DF  .~ Rotatable stirrer {15}
318.~.~ Screw-type stirrer {6}
319  DF  .~.~.~> With additional agitator elements on screw
320  DF  .~.~.~> Openwork helical ribbon
321  DF  .~.~.~> Opposite pitch
322  DF  .~.~.~> Discontinuous screw
323  DF  .~.~.~> Varying diameter of convolutions or shank or varying pitch
324  DF  .~.~.~> Apertured or notched

DEFINITION

Classification: 366/318

Screw-type stirrer:

(under subclass 279) Subject matter wherein the stirrer comprises a helical ribbon rotatable about its longitudinal axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

79+, for a stirrer comprising a through-pass screw conveyor.

157.2+, for a mixer including a screw-type stirrer and screw conveyor material feeder.