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:
Feb. 18, 2014
Filed:
Feb. 02, 2007
Jyri Järvenkylä, Hollola, FI;
Franz-josef Riesselmann, Lohne, DE;
Ralf Winterstein, Meiningen, DE;
Reinhold Freermann, Ochtrup, DE;
Lars Hoving, Västerås, SE;
Jyri Järvenkylä, Hollola, FI;
Franz-Josef Riesselmann, Lohne, DE;
Ralf Winterstein, Meiningen, DE;
Reinhold Freermann, Ochtrup, DE;
Lars Hoving, Västerås, SE;
Uponor Innovation AB, Fristad, SE;
Abstract
An elongated product is formed such that first a core is formed, the outer surface of the core being made of plastic. Thereafter, a tubular metal layer is extruded such that the layer is seamless. When the metal layer is extruded, a clearance is allowed between the metal layer and the core. After the metal layer has cooled, the diameter of the metal layer is reduced such that the metal layer contacts the plastic core. Thereafter, the metal is annealed such that the flexibility of the metal layer increases.