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:
Oct. 19, 2004
Filed:
Apr. 19, 2002
Applicant:
Inventors:
Mario Kuhl, Herzogenaurach, DE;
Henning Karbstein, Strullendorf, DE;
Lothar von Schimonsky, Nuremberg, DE;
Assignee:
INA-Schaeffler KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 1/14 ;
U.S. Cl.
CPC ...
F01L 1/14 ;
Abstract
A hydraulic system ( ) for a switchable valve drive element ( ) of an internal combustion engine ( ) is provided and includes a throttled connection ( ) created from a second channel ( ), used to actuate a hydraulic play-compensation element ( ) using hydraulic fluid, directly to an external radial side ( ) of a coupling element ( ). The coupling element ( ) is supplied by a first channel ( ) with the switching hydraulic pressure. These measures make it possible to keep the first channel ( ) as free as possible of undesired air.