Apparatus and method of forming curved extruded products

Details Apparatus and method of forming curved extruded products Apparatus and method of forming curved extruded products

1993-06-03

1995-06-13

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264562, 264571, 26417717, 26417719, 264285, 264339, 264178R, 425 71, 425325, 4253261, 425377, 425388, B29C 4790, B29C 5302

Patent

active

054240239

ABSTRACT:
The present invention has several aspects: an extrusion apparatus, a method of making a curved extrusion, and a curved extrusion made by the method. In broadest terms, the apparatus of the present invention comprises: (1) an extruding means, typically an extruder, adapted to produce an extrudate having a cross-section; (2) a plurality of guide members arranged so as to form a curvilinear path through which the extrusion is passed, each of the guide members having an aperture having substantially the same shape as the cross-section of the extrusion, whereby the plurality of guide members are adapted to form the extrusion into a curved shape while maintaining the cross-section of the extrusion; and (3) mechanical means adapted to conduct the extrusion through said plurality of guide members, such as an extrusion puller.

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