US PATENT SUBCLASS 264 / 325
.~.~.~.~ Utilizing closed mold cavity

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

239  DF  MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
299  DF  .~ Shaping against forming surface (e.g., casting, die shaping, etc.) {10}
319  DF  .~.~ Applying heat or pressure {6}
320  DF  .~.~.~ Reshaping solid work or introducing solid work into mold cavity {5}
325.~.~.~.~ Utilizing closed mold cavity {1}
326  DF  .~.~.~.~.~> Toroidal work (e.g., tire, etc.)

DEFINITION

Classification: 264/325

(under subclass 320) Processes in which the solid work or molding material, within the confines of a closed mold cavity, is caused to take the shape of the interior of said mold cavity by a plastic flow of said work or molding material.

(1) Note. A mold cavity is considered closed for purposes of this subclass if it engages all of the exterior product

surfaces being formed or reshaped. Spaces between mold parts or small openings in said parts will not exclude a mold cavity from this subclass even though some molding material is forced from the mold cavity through such spaces and openings.