US PATENT SUBCLASS 264 / 638
.~ Shaping by extrusion (e.g., spinning, etc.)

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

603  DF  OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM {30}
638.~ Shaping by extrusion (e.g., spinning, etc.) {1}
639  DF  .~.~> Of indefinite length product (e.g., sheet, tape, rod, fiber, etc.)

DEFINITION

Classification: 264/638

Shaping by extrusion (e.g., spinning, etc.):

(under subclass 603) Process wherein an article is formed by forcing a supply of article forming material through a confining and shaping orifice.

SEE OR SEARCH THIS CLASS, SUBCLASS:

176.1+, for processes of shaping by extrusion that do not involve sintering of the formed article outside of a mold.

SEE OR SEARCH CLASS

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

376.1+, for an extrusion shaping machine for nonmetals; see the search notes thereunder.