US PATENT SUBCLASS 264 / 512
.~.~ Producing hollow work or a tubular article

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

500  DF  DIRECT APPLICATION OF FLUID PRESSURE DIFFERENTIAL TO PERMANENTLY SHAPE, DISTORT, OR SUSTAIN WORK {14}
510  DF  .~ Producing multilayer work or article {2}
512.~.~ Producing hollow work or a tubular article {3}
513  DF  .~.~.~> Including injection
514  DF  .~.~.~> Including extrusion {1}
516  DF  .~.~.~> By insertion or application of a preform

DEFINITION

Classification: 264/512

Producing hollow work or a tubular article:

(under subclass 510) Processes in which the article formed is tubular or hollow.

(1) Note. Hollow is intended to comprise cuplike shapes that are relatively deep with respect to diameter.