US PATENT SUBCLASS 264 / 549
.~.~.~ 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}
547  DF  .~.~ With distinct staged deformation by differential fluid pressure {2}
549.~.~.~ Including use of male part to stretch heated preform which is formed by a female mold which determines shape of work

DEFINITION

Classification: 264/549

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

(under subclass 547) 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.