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:
Jan. 06, 2009
Filed:
Jul. 02, 2005
Harald Elendt, Altendorf, DE;
Christof Faria, Erlangen, DE;
Harald Elendt, Altendorf, DE;
Christof Faria, Erlangen, DE;
Schaeffler KG, Herzogenaurach, DE;
Abstract
A valve drive for an internal combustion engine having at least one camshaft which has a toothed shaft () and at least one cam part () with a plurality of different cam paths () arranged adjacent to one another for the variable actuation of gas exchange valves () by displacement of the cam parts () by means of actuators (actuator pinsand) on the toothed shaft (), the toothed shaft () having a shaft profile () and the cam parts () having a hub profile () which is matched to said shaft profile (), and the number of wedges, notches or teeth () of the shaft profile () and of the hub profile () being such that the different cam positions for four-stroke internal combustion engines of any type such as in-line engines, V-engines or W-engines, and with any numbers of cylinders, can be provided with the same toothed shafts () and cam parts ().