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, 2010
Filed:
Oct. 08, 2004
Werner Bernhard, Moegglingen, DE;
Oliver Hetzel, Waldstetten, DE;
Joachim Fischer, Schwaebisch Gmuend, DE;
Olaf Beutler, Diepholz, DE;
Achim Ottenstein, Durlangen, DE;
Richard Kaisser, Waeschenbeuren, DE;
Reinhold Schuster, Schechingen, DE;
Wolf-ingo Ratzel, Leinfelden-Echterdingen, DE;
Werner Bernhard, Moegglingen, DE;
Oliver Hetzel, Waldstetten, DE;
Joachim Fischer, Schwaebisch Gmuend, DE;
Olaf Beutler, Diepholz, DE;
Achim Ottenstein, Durlangen, DE;
Richard Kaisser, Waeschenbeuren, DE;
Reinhold Schuster, Schechingen, DE;
Wolf-Ingo Ratzel, Leinfelden-Echterdingen, DE;
ZF Lenksysteme GmbH, Schwaebisch Gmuend, DE;
Abstract
In a power-assisted steering system or power steering system having an electric motor, which drives a worm gear mechanism that has a composite gear wheel in the form of a worm wheel, the worm wheel includes a ring gear connectible to a hub via a first disk, and an annular projection of the first disk axially engages with the ring gear. In order to improve the centering of the component parts of the composite gear wheel in the tangential direction, and in order to render the power transmission in the gear wheel uniform, the annular projection on the first disk is provided with one or more depressions in the axial direction to form tooth-like projections, which form a drive-type toothed section and engage with depressions on an axial side face of the ring gear.