US PATENT SUBCLASS 264 / 515
.~.~.~.~ Including forming a hollow article

Current as of: June, 1999
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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  DF  .~.~ Producing hollow work or a tubular article {3}
514  DF  .~.~.~ Including extrusion {1}
515.~.~.~.~ Including forming a hollow article

DEFINITION

Classification: 264/515

Including forming a hollow article:

(under subclass 514) Processes in which a finite length hollow parison is forced into conformity with a female mold by the application of differential fluid pressure.