US PATENT SUBCLASS 264 / 322
.~.~.~.~ Initially softening workpiece

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}
322.~.~.~.~ Initially softening workpiece

DEFINITION

Classification: 264/322

(under subclass 320) Processes in which the solid workpiece is subjected to a treatment prior to reshaping for the purpose of decreasing its rigidity or hardness.

(1) Note. The treatment may be, for example, heating, moistening, or solvent application.

(2) Note. Preliminary softening of the workpiece by liquid impregnation within the scope of this subclass differs from coating or impregnating the workpiece before molding or shaping as provided for by subclasses 134+ in that the impregnation in the present subclass is transitory and that of subclasses 134+ in a permanent component of the article formed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

340, for treatments, per se, of preformed articles which are directed to or included softening operations.