US PATENT SUBCLASS 264 / 177.1
.~.~ To produce particular cross section (e.g., noncircular, etc.)

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

165  DF  FORMING CONTINUOUS OR INDEFINITE LENGTH WORK {8}
176.1  DF  .~ Shaping by extrusion {11}
177.1.~.~ To produce particular cross section (e.g., noncircular, etc.) {6}
177.11  DF  .~.~.~> Nonresinous material only (e.g., ceramic, soap, cellulose, glue, etc.)
177.12  DF  .~.~.~> Honeycomb
177.13  DF  .~.~.~> Filament (e.g., T-configured, dog-bone, trilobal, etc.) {1}
177.16  DF  .~.~.~> Die configuration (other than fixed orifice shape)
177.17  DF  .~.~.~> Processing or treatment after extrusion (e.g., support, guide, etc.) {2}
177.2  DF  .~.~.~> With reinforcement filler, or additive

DEFINITION

Classification: 264/177.1

To produce particular cross-section (e.g., noncircular, etc.):

(under subclass 176) Processes wherein formation is by extrusion through an orifice so shaped as to produce solid, cross-sectionally uniform articles which are other than circular or linear in cross-section.

(1) Note. Extrusion through circular orifices or elongated linear slit orifices to produce conventional filaments, rods, films, sheet, etc., are classified on some other basis. To be placed herein, a patent must disclose the use of an extruding orifice of a particular cross-sectional shape to produce a shaped article other than those set out above.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167, for methods of producing articles of varying cross-sectional area or intermittent cross-sectional irregularity.

171.1+, for methods of producing transversely layered or stratified articles.