US PATENT SUBCLASS 264 / 502
.~.~ At least a portion of the external surface being unconfined during 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}
501  DF  .~ Producing toroidal work (e.g., tire, etc.) {1}
502.~.~ At least a portion of the external surface being unconfined during application of fluid pressure

DEFINITION

Classification: 264/502

At least a portion of the external surface being unconfined during application of fluid pressure:

(under subclass 501) Processes in which an exterior portion of the toroidal surface is unconfined during the application of differential fluid pressure.

(1) Note. The processes included herein result in a toroid with an outward projection.

SEE OR SEARCH THIS CLASS, SUBCLASS:

572, for similar processes of shaping partially confined surfaces which are not toroidal.