US PATENT SUBCLASS 264 / 239
MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE

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

239MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
240  DF  .~> Separately introducing reacting materials into mold
241  DF  .~> To produce composite, plural part or multilayered article {9}
280  DF  .~> Reshaping running or indefinite-length work {5}
291  DF  .~> Stretching or stretch forming {1}
293  DF  .~> Deforming the surface only
294  DF  .~> Plural sequential shaping or molding steps on same workpiece {2}
297.1  DF  .~> Forming plural articles {5}
298  DF  .~> By casting on a liquid surface
299  DF  .~> Shaping against forming surface (e.g., casting, die shaping, etc.) {10}
339  DF  .~> Bending or twisting of work

DEFINITION

Classification: 264/239

(under the class definition) Processes for (1) making a self-sustaining solid article or shape from a formless or flowable mass of material, or (2) altering the configuration or at least one dimension of a solid self-sustaining workpiece by the application of a distorting mechanical force thereto.

(1) Note. Included herein are patents to confining shaped preforms between pressure surfaces and subjecting them to heat and pressure even though no apparent shaping is involved, e.g., vulcanizing rubber articles in a confining mold.

SEE OR SEARCH THIS CLASS, SUBCLASS:

340+, for treating preforms without pressure means.