US PATENT SUBCLASS 72 / 370.03
.~.~.~ End upset

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}
370.01  DF  .~.~ Comprising use of internal tool {4}
370.03.~.~.~ End upset

DEFINITION

Classification: 72/370.03

End upset:

(under subclass 370.01) Process wherein an axially forced die causes an increase in wall thickness of an axial extremity of the tube*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

370.1+, for a process of end forming without the use of an internal tool.