US PATENT SUBCLASS 425 / 587
.~.~ Screw feeder

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

542  DF  FEMALE MOLD AND CHARGER TO SUPPLY FLUENT STOCK UNDER PRESSURE THERETO IN FLUID-TIGHT RELATIONSHIP (E.G., INJECTION MOLD, ETC.) {17}
585  DF  .~ Including feeder to supply stock to charger {2}
587.~.~ Screw feeder

DEFINITION

Classification: 425/587

(under subclass 585) Apparatus wherein the transfer means is adapted to turn about an axis and is helically ribbed along that axis to transfer fluent stock material therealong upon rotation thereof.