US PATENT SUBCLASS 72 / 370.24
.~.~.~ Change in circular tube diameter

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

362  DF  PROCESS {8}
367.1  DF  .~ Tube making or reshaping {11}
370.23  DF  .~.~ Change in cross section {2}
370.24.~.~.~ Change in circular tube diameter {1}
370.25  DF  .~.~.~.~> Reduction in diameter

DEFINITION

Classification: 72/370.24

Change in circular tube diameter:

(under subclass 370.23) Process wherein the tube* has an annular profile which is modified by varying the transverse dimension of the annular profile.

SEE OR SEARCH THIS CLASS, SUBCLASS:

370.06+, for a process of expanding a circular tube using an internal tool.