US PATENT SUBCLASS 425 / 388
.~.~ Vacuum or suction means

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

383  DF  PREFORM RESHAPING OR RESIZING MEANS: OR VULCANIZING MEANS INCLUDING A CONFORMING PREFORM SUPPORT {10}
387.1  DF  .~ Including shaping means comprising fluid pressure contacting work directly {1}
388.~.~ Vacuum or suction means

DEFINITION

Classification: 425/388

(under subclass 387.1) Apparatus in which the reshaping is accomplished at least in part by means creating a reduced pressure on at least one surface of the preform to thereby provide a differential pressure which is utilized as a shaping force.