US PATENT SUBCLASS 425 / 532
.~.~ Parison forming extruder

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

522  DF  FEMALE MOLD AND MEANS TO SHAPE PARISON DIRECTLY BY INTERNAL FLUID PRESSURE, (E.G., BLOW MOLD, ETC.) {10}
528  DF  .~ Including means to prepare parison {5}
532.~.~ Parison forming extruder

DEFINITION

Classification: 425/532

(under subclass 528) Apparatus wherein the means to treat or condition includes means to form a hollow workpiece by forcing fluent material through a shaping orifice.

SEE OR SEARCH THIS CLASS, SUBCLASS:

376.1+, for a shaping orifice combined with means to force fluent material through the orifice.

461+, for a shaping orifice, per se.