US PATENT SUBCLASS 425 / 326.1
.~.~ Utilizing a fluid pressure differential as a reshaping means

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

324.1  DF  DIVERSE DISTINCT TYPE SHAPING MEANS {2}
325  DF  .~ Shaping orifice and either a downstream preform reshaping means or vulcanizing means including conforming preform support {2}
326.1.~.~ Utilizing a fluid pressure differential as a reshaping means

DEFINITION

Classification: 425/326.1

(under subclass 325) Apparatus wherein extruded material is reshaped by means establishing a fluid pressure different on one portion of the preform than that maintained on another portion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

405.1+, for shaping means utilizing differential gas pressure in the shaping operation; see the search notes thereunder.

532, for apparatus for extruding a parison combined with apparatus for blow molding that parison.

567+, for an injection molding machine including fluid pressure means to expand the material against mold sidewalls.

SEE OR SEARCH CLASS

65, Glass Manufacturing, 187+, for means for drawing tube stack from a molten glass bath including fluid pressure differential inflating means.