US PATENT SUBCLASS 264 / 294
.~ Plural sequential shaping or molding steps on same workpiece

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

239  DF  MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
294.~ Plural sequential shaping or molding steps on same workpiece {2}
295  DF  .~.~> Molding followed by bending or twisting
296  DF  .~.~> One step reshapes portion only of article

DEFINITION

Classification: 264/294

(under subclass 239) Processes which include plural molding or shaping steps said steps being distinct, separate and sequential.

(1) Note. Included herein are processes in which a similar type of molding, which may differ in magnitude or direction is applied in plural steps to the same portion of the article.

(2) Note. See appropriate subclasses in this class and the search notes below in particular for processes which involve incremental molding or accretion from bulk, e.g., successive dip casting, and those operations which involve repetition to give an overall unitary effect, e.g., sequential corrugation, stepwise elongation of successive portions of an article or bending a sheet in steps to form a U-shape.

(3) Note. Where a patent may recite a preliminary "extrusion" prior to a molding operation where said "extrusion" is disclosed to be for the purpose of mixing, agitating or controlling or directing a stream of liquid or plastic material enroute to the molding means, rather than for shaping by extrusion, said "extrusion" will not be

considered a diverse molding step for purpose of this subclass but will be classified on some other basis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

88+, for plural forming steps wherein one Is by a fluid pressure differential. 285+, for processes of bending or corrugating indefinite length work.

301+, particularly subclass 305 for processes involving accretion from bulk.

308, for processes which include incremental molding.

339, for bending or twisting of work.