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:
May. 23, 2006
Filed:
Jan. 21, 2005
Jens Schafer, Herzogenaurach, DE;
Martin Steigerwald, Erlangen, DE;
Jonathan Heywood, Pettstadt, DE;
Jens Schafer, Herzogenaurach, DE;
Martin Steigerwald, Erlangen, DE;
Jonathan Heywood, Pettstadt, DE;
INA-Schaeffler KG, , DE;
Abstract
A device for varying valve timing in an internal combustion engine comprises an adjusting mechanism for varying an angle of rotation between a drive pinion () and a camshaft (end portion of the camshaft), said adjusting mechanism being configured as a wobble transmission. The drive pinion () comprises a first front-end gearing () and a disk () comprises a second front-end gearing (), which first and second front-end gearings mesh partially with each other, and the number of teeth of said front-end gearings differ from each other by at least one tooth. To reduce the overall dimensions of the device and avoid gearing lash, it is proposed, on the one hand, to connect the disk () rotationally fast to the camshaft () and on the other hand, to configure the disk () in axial direction of the camshaft () as a flexible element that can be deformed in axial direction by an adjusting device (thrust plate).