US PATENT SUBCLASS 72 / 370.05
.~.~.~.~ Collapsible mandrel

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
370.04  DF  .~.~.~ Laterally pressed die(s) {1}
370.05.~.~.~.~ Collapsible mandrel

DEFINITION

Classification: 72/370.05

Collapsible mandrel:

(under subclass 370.04) Process in which the internal tool is undriven and breaks down for removal from the interior of the tube* after the deformation process.