US PATENT SUBCLASS 264 / 531
.~.~ Including shaping by mechanical means other than fluid pressure during or subsequent to fluid pressure differential shaping

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}
523  DF  .~ Including application of internal fluid pressure to hollow finite length parison to expand same into conformity with female mold part {10}
531.~.~ Including shaping by mechanical means other than fluid pressure during or subsequent to fluid pressure differential shaping {3}
532  DF  .~.~.~> Shaping is longitudinal or axial stretching prior to or during differential fluid pressure deformation
533  DF  .~.~.~> Shaping is neck formation other than by closure of mold for body of article
534  DF  .~.~.~> Shaping is subsequent to expansion

DEFINITION

Classification: 264/531

Including shaping by mechanical means other than fluid pressure during or subsequent to fluid pressure differential shaping:

(under subclass 523) Processes in which sequential reshaping is carried out by physical contact with relatively moving forming means.

(1) Note. Severing, bottom pinching and neck molding wherein the neck is molded as an inherent step in the closing of the mold about the parison or workpiece are not considered reshaping within the meaning of this subclass; however, if a separate neck mold is closed about the neck portion or a mandrel is inserted forcing material into a neck mold portion of a closed mold this would be sufficient to be considered reshaping for purposes of this subclass.