US PATENT SUBCLASS 72 / 266
.~.~ Integral with ram

Current as of: June, 1999
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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}
266.~.~ Integral with ram {1}
267  DF  .~.~.~> Single element ("impact extrusion" type)

DEFINITION

Classification: 72/266

Integral with ram:

(under subclass 264) Method or means in which a plunger constitutes pressure-applying means and is integrally formed with or rigidly joined to the internal-forming means for simultaneous operational movement therewith.

(1) Note. Patents involving longitudinal adjustment between the plunger and mandrel where the relation between the two is fixed during operation are included. [figure] [caption]Extrusion by ram with internal mandrel (subclass 266).