US PATENT SUBCLASS 72 / 265
.~.~ Movable longitudinally in ram


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

253.1  DF  BY EXTRUDING THROUGH ORIFICE {15}
264  DF  .~ Utilizing internal forming means (e.g., mandrel) or core tube (e.g., wire guide) {4}
265.~.~ Movable longitudinally in ram


DEFINITION

Classification: 72/265

Movable longitudinally in ram:

(under subclass 264) Method or means utilizing or including apparatus in which a plunger constitutes pressure-applying means and the internal-forming means is a mandrel, and both the plunger and mandrel point in the direction of the extrusion flow and in line therewith, the mandrel being slidable within and relative to the plunger during some portion of the operational cycle of the machine.

SEE OR SEARCH THIS CLASS, SUBCLASS:

266, for a mandrel which is merely longitudinally adjustable in the plunger, the relation between the two being otherwise fixed during operation.