US PATENT SUBCLASS 239 / 675
.~.~ Screw conveyor

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

650  DF  CONTAINER FOR NON-FLUID MATERIAL, AND SCATTERING MEANS {21}
672  DF  .~ Including driven conveyor or follower feeding material horizontally towards scatterer {7}
675.~.~ Screw conveyor

DEFINITION

Classification: 239/675

(under subclass 672) Apparatus in which the means for delivering material toward the strewing means comprises a conveyor having a generally screwlike configuration so that it turns on its axis material is forced along the direction of its axis.