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:
Jul. 02, 2019
Filed:
Feb. 27, 2015
Clariant International Ltd., Muttenz, CH;
Linn High Therm Gmbh, Eschfelden, DE;
Daniel Decker, Liederbach, DE;
Michael Woelki, Frankfurt am Main, DE;
Phillip Schwerdt, Mainz-Kastel, DE;
Horst Linn, Eschenfelden, DE;
Rudolf Linn, Hersbruck, DE;
Juergen Kunstmann, Bad Soden, DE;
CLARIANT INTERNATIONAL LTD., Muttenz, CH;
LINN HIGH THERM GMBH, Eschfelden, DE;
Abstract
A heating device for producing carbon fibers from a thread-shaped fiber starting material, wherein the heating device has a central tubular induction heating element through which the fiber starting material is moved. The tubular induction heating element is surrounded by thermal insulation. At least one mid- to high-frequency induction coil is provided outside the thermal insulation, and an inert gas flows through the central induction heating element, in particular, for carbonizing and/or graphitizing the fiber starting material. For energy optimization, a first and a second tube element is provided on the outer side of the thermal insulation. The elements are made of material that is transparent to the induction field of the mid- to high-frequency induction coil and are spaced apart from one another by an annular gap through which the inert gas flows.