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:
Sep. 24, 1996
Filed:
Feb. 21, 1995
Applicant:
Inventors:
Dietmar Schwarzenthal, Ditzingen, DE;
Joachim Gruenberger, Sachsenheim, DE;
Assignee:
Dr. Ing. h.c.F. Porsche AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ; F02D / ;
U.S. Cl.
CPC ...
123 9016 ; 1231 / ; 74569 ;
Abstract
A tappet is provided with a hydraulically actuated piston and a clutch member so that the valve is inoperative in a first switching position, whereas, it carries out lifting movements for controlling the charge cycle in a second switching position. The tappet interacts with a cam of a camshaft. A locking element is associated with the clutch member and interacts with a valve stem which unlocks the locking element in a defined cam path range and when a valve stem of the valve is dipped into a bore of the clutch member.