The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
May. 05, 2000
Applicant:
Inventor:
Erwin Brunnhofer, Fuldabrück, DE;
Assignee:
Technoform Caprano + Brunnhofer Ohg, Fuldabruck, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 4/790 ;
U.S. Cl.
CPC ...
B29C 4/790 ;
Abstract
Hollow extrusions are formed by initially extruding a plurality of separate strands adapted to form segments of the completed hollow extrusion in their positions corresponding to the locations of those segments in the finished extrusion. Webs between these strands are then formed by feeding an afterflow of the melt at press pressure into the shaping channel in the calibrator downstream from the die zone so that under the pressure of this melt and the melt heat, the webs fuse to the ends of ribs of the separate strands.