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:
Oct. 28, 2003
Filed:
Jun. 04, 2002
Miroslaw Plata, Vetroz, CH;
Christophe Bagnoud, Veyras, CH;
Gregoire Arnold, Miege, CH;
Martin Bolliger, Venthone, CH;
Alcan Technology & Management Ltd, Neuhausen am Rheinfall, CH;
Abstract
An extrusion device for manufacturing a profile from an extrusion block ( ), which is at least in part of metallic material, contains a container ( ) with container bore ( ) to accommodate an extrusion block ( ), a stem ( ), a shaping chamber and/or a shaping die ( ) and a heating facility ( ) arranged between the container bore ( ) and the die ( ). The heating facility ( ) contains a heating chamber ( ) in the form of a hollow metal tube featuring at least a first and a second heating section ( ) with heating chamber walls ( ) and means ( ) for inductively heating the heating chamber walls ( ). The first heating section ( ) exhibits a larger cross-sectional diameter than the—with respect to the direction of extrusion x—second heating section ( ), forming thereby a step-like narrowing in cross-section.