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:
Jul. 23, 2013
Filed:
Jul. 04, 2007
Thomas Hale, Northampton, GB;
Jonathan Hall, Northampton, GB;
Hermann Hoffmann, Stuttgart, DE;
Mahle International GmbH, , DE;
Abstract
The present invention relates to a cam drive () having a camshaft and having cams ()arranged thereon and having at least one rocker arm () which has a cam follower () and which is operatively connected by means of its first arm () to a plunger-like bearing () and by means of its second arm () to at least one gas exchange valve () of an associated cylinder. The cam drive () also has a device () for varying the lift of the at least one gas exchange valve (). Here, it is essential to the invention that the device () is embodied as a clutch device which acts between the plunger-like abutment () and the rocker arm ()and which has an actuating element () which is mounted so as to be rotatable about an axis () of the plunger-like abutment () at least between two positions, wherein a valve lift in a first, coupled position of the actuating element () is varied in comparison with a second, decoupled position.