US PATENT SUBCLASS 264 / 560
.~.~.~ With calibration, mandrel forming or with internal guide


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}
555  DF  .~ Production of continuous or running length {3}
557  DF  .~.~ Including liquid contact {4}
560.~.~.~ With calibration, mandrel forming or with internal guide


DEFINITION

Classification: 264/560

With calibration, mandrel forming or with internal guide:

(under subclass 557) Processes in which a sizing operation follows the initial forming operation or forming takes place with the use of an internal forming or supporting member.