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:
Jun. 03, 2008
Filed:
Mar. 31, 2006
Applicants:
Donald Haefner, Troy, MI (US);
Florin Bugescu, Canton, MI (US);
Inventors:
Donald Haefner, Troy, MI (US);
Florin Bugescu, Canton, MI (US);
Assignee:
Schaeffler KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 1/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variable valve drive for changing control timing of cam-actuated gas-exchange valves of an internal combustion engine is provided, with a tappet (), which, with convex cam engaging contour (), engages a cam () of a camshaft () and which is guided so that it can move in the longitudinal direction in a rotatable tappet guide (), whose rotational angle () is adjustable for changing the control timing. In this way, the tappet guide () can rotate about a rotational axis () parallel to a longitudinal axis () of the camshaft ().