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:
Feb. 05, 2008
Filed:
Dec. 22, 2006
Peter Sailer, Erlangen, DE;
Oliver Schnell, Veitsbronn, DE;
Peter Sailer, Erlangen, DE;
Oliver Schnell, Veitsbronn, DE;
Schaeffer KG, Herzogenaurach, DE;
Abstract
In a valve timing gear of an internal combustion engine having hydraulic valve clearance adjusting elements (), each element () comprises a rotationally symmetrical housing (), which is guided so that it is longitudinally displaceable in a seat in the engine and at one axial end of the element () is acted upon by a cam of a camshaft. The element () comprises a piston () which is axially displaceable in the housing () and is non-positively connected either directly or indirectly to an engine gas exchange valve. A control valve (), which has a closing member () and a valve seat for this formed on the piston (), is arranged axially between the housing () and the piston (). A reverse-spring element is used as valve clearance adjusting element (), that is to say an element the control valve () of which comprises a control valve spring (), which is supported by one end on the piston () and by the other end on the closing member ().