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:
Mar. 08, 2005
Filed:
Dec. 03, 2001
Willi Wissel, Blankenbach, DE;
Willi Wissel, Blankenbach, DE;
TRW Automotive Safety Systems GmbH & Co. KG, Aschaffenburg, DE;
Abstract
The invention relates to a method of producing a skeleton for a steering wheel rim made of sheet metal, the method comprising the following steps: a flat metal blank is cut in such a way that it has a ring-shaped section, the ring-shaped section is deformed in such a way that it acquires a hollow profile which in cross-section encloses an angle of more than 180°, and the deformation is carried out at least partially in that the ring-shaped section is moved between two rotatable rollers. The invention further relates to a steering wheel produced by the method proposed. Such a steering wheel has a hollow steering wheel rim including a center channel for delivering cooling air. The channel is defined by the open hollow profile and by a shell part placed onto the profile.