Extruder for making curved metal workpiece

Details Extruder for making curved metal workpiece Extruder for making curved metal workpiece

2007-05-22

2007-05-22

Tolan, Ed (Department: 3725)

Metal deforming

By extruding through orifice

With metal-deforming other than by extrusion

C072S257000

Reexamination Certificate

active

10524645

ABSTRACT:
An extruder for making a curved workpiece has an extruder frame including a counterbeam extending transversely of an extrusion direction and formed with a recess that is throughgoing in the direction and a tool recessed in the recess and including a die having a downstream face spaced upstream in the direction from a downstream side of the counterbeam. A hot metal block is pressed against an upstream face of the die to extrude a strand in the direction from the downstream face of the die. Immediately downstream of the die a transverse external force is applied to the strand to bend it. The tool includes a pressure plate that extends completely through the counterbeam in the extrusion direction.

REFERENCES:
patent: 2954121 (1960-09-01), Benson
patent: 5305626 (1994-04-01), Tiekink
patent: 6634200 (2003-10-01), Kleiner et al.
patent: 6952942 (2005-10-01), Graefe et al.
patent: 2006/0156780 (2006-07-01), Birkenstock

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