US PATENT SUBCLASS 425 / 530
.~.~.~ Comprising staged inflation means

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}
529  DF  .~.~ Parison stretching means {1}
530.~.~.~ Comprising staged inflation means

DEFINITION

Classification: 425/530

(under subclass 529) Apparatus wherein the means to elongate the molecular structure of the member in the formation of a preformed hollow workpiece includes means to fill the member with fluid to cause the member to be enlarged.