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:
Sep. 14, 1993
Filed:
Mar. 27, 1991
Rudolf Beier, Offenbach, DE;
Peter Amborn, Neunkirchen, DE;
Wolfgang Exner, Hennef, DE;
Herbert Frielingsdorf, Lohmar, DE;
Klaus Greulich, Hollig, DE;
Joachim Altdorf, Cologne, DE;
Ivan Rericha, Sinnersdorf, DE;
GKN Automotive AG, Siegburg, DE;
Lohr & Bromkamp GmbH, Offenbach am Main, DE;
Ford-Werke AG, Cologne, DE;
Abstract
A driveshaft for a motor vehicle has an approximately constant wall thickness and a changing outer diameter which extends analogously to the amplitude of the second basic vibration of the natural bending frequency. In this way it is possible to achieve a distribution of cross-sectional area which is functionally optimized and meets the respective strength requirements. At the same time, torsional stiffness values may be set as required and natural resonance frequency values may be varied. With help of this design it is possible to move the natural resonance frequency of the tubular shaft into a speed range of minimum external excitation energy.