US PATENT SUBCLASS 264 / 526
.~.~ Including use of vacuum or internal venting of parison to remove fluid after application of differential fluid pressure

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}
523  DF  .~ Including application of internal fluid pressure to hollow finite length parison to expand same into conformity with female mold part {10}
526.~.~ Including use of vacuum or internal venting of parison to remove fluid after application of differential fluid pressure

DEFINITION

Classification: 264/526

Including use of vacuum or internal venting of parison to remove fluid after application of differential fluid pressure:

(under subclass 523) Processes in which the parison is vented internally to remove a blowing fluid or a vacuum applied to created differential fluid pressure.