US PATENT SUBCLASS 425 / 538
.~ Plural female molds and means to shape parison at each directly by internal fluid pressure

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}
538.~ Plural female molds and means to shape parison at each directly by internal fluid pressure {2}
539  DF  .~.~> With means to support molds for movement with continuously moving work
540  DF  .~.~> With rotary support for molds

DEFINITION

Classification: 425/538

(under subclass 522) Apparatus including (1) a plurality of members, each including a closed shaping surface facing radially inwardly adapted to be engaged by and to shape preformed material moving radially outwardly thereagainst, and (2) a plurality of means to provide a fluent medium under pressure to the interior of the preformed workpiece.