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. 18, 2019
Filed:
Apr. 13, 2015
Thyssenkrupp Federn Und Stabilisatoren Gmbh, Hagen, DE;
Thyssenkrupp Ag, Essen, DE;
Werner Hufenbach, Dresden, DE;
Jörn Kiele, Dresden, DE;
Martin Lepper, Dresden, DE;
Jens Werner, Coswig, DE;
THYSSENKRUPP FEDERN UND STABILISATOREN GMBH, Hagen, DE;
THYSSENKRUPP AG, Essen, DE;
Abstract
A torsion spring may be formed as a bar spring or helical spring comprising a spring wire of fiber composite material. In some examples, the torsion spring comprises a number of layers of fiber reinforcement, which are impregnated with a matrix material. The layers may comprise tensile-loaded fibers and compression-loaded fibers. Groups of layers of the same loading direction may exist and, seen from an inside to an outside, the group stiffness of at least two groups may differ. Likewise, methods for making such torsion springs of fiber composite material are disclosed.