US PATENT SUBCLASS 264 / 550
.~.~ Including use of male part to stretch heated preform which is formed by a female mold which determines shape of work

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}
544  DF  .~ Starting material is nonhollow planar finite length preform or product is finite length {6}
550.~.~ Including use of male part to stretch heated preform which is formed by a female mold which determines shape of work {1}
551  DF  .~.~.~> Simultaneous formation of plural articles

DEFINITION

Classification: 264/550

Including use of male part to stretch heated preform which is formed by a female mold which determines shape of work:

(under subclass 544) Processes in which a member contacts and deforms or stretches a sheet of material in an axial direction before the application of differential fluid pressure to force it into conformity with a female mold which determines the shape of the workpiece.