US PATENT SUBCLASS 264 / 506
.~.~ Of a tubular preform

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}
505  DF  .~ Corrugating {1}
506.~.~ Of a tubular preform {2}
507  DF  .~.~.~> With axial compression
508  DF  .~.~.~> Continuous or indefinite length

DEFINITION

Classification: 264/506

Of a tubular preform:

(under subclass 505) Processes in which the workpiece is hollow, open ended, and of greater axial dimension than diameter.