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. 30, 2014
Filed:
Jul. 10, 2010
Jonathan Heywood, Chemnitz, DE;
Sebastian Wappler, Chemnitz, DE;
Mario Lindner, Chemnitz, DE;
ThyssenKrupp Presta TecCenter AG, Eschen, LI;
Abstract
A camshaft for actuating the gas exchange valves of an internal combustion engine. The camshaft includes a camshaft tube, a hydraulic camshaft adjuster, a valve for controlling the hydraulic fluid supplied to the camshaft adjuster and an actuation device, arranged in the interior of the camshaft tube, for actuating the valve. The actuation device is secured against displacement in the axial direction. The camshaft is light-weight and functional elements in addition to the actuation device and optionally the valve can be integrated into the interior of the camshaft. It should furthermore be possible to arrange an oil or vacuum pump at the end of the camshaft opposite the camshaft adjuster, the pump being drivable by the camshaft. The actuation device is designed as an electromagnetic, piezoelectric or electrical actuator and is connected to the camshaft tube such that they rotate together.