US PATENT SUBCLASS 264 / 564
.~.~.~ Including deformation by application of fluid pressure

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}
563  DF  .~.~ Producing a tubular product {1}
564.~.~.~ Including deformation by application of fluid pressure {2}
565  DF  .~.~.~.~> With internal gas bearing or mandrel
566  DF  .~.~.~.~> With application of external pressure or vacuum {3}

DEFINITION

Classification: 264/564

Including deformation by application of fluid pressure:

(under subclass 563) Processes in which the tubular product is shaped or deformed by the application of differential fluid pressure.