US PATENT SUBCLASS 29 / 523
.~.~.~.~ Radially expanding internal tube

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
428  DF  .~ Assembling or joining {21}
505  DF  .~.~ Joining by deforming {6}
522.1  DF  .~.~.~ Radially expanding part in cavity, aperture, or hollow body {3}
523.~.~.~.~ Radially expanding internal tube

DEFINITION

Classification: 29/523

Radially expanding internal tube:

(under subclass 522.1) Processes in which the inserted part is tubular.

SEE OR SEARCH THIS CLASS, SUBCLASS:

512, for a process of expanding a tube outwardly to grip a surrounding part, and in addition, flaring the end of the tube beyond the edge of the aperture or cavity in which the tube is fastened.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

382.4+, for a coupling between a first and a second pipe formed by outwardly bulging the inner pipe.