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:
Apr. 23, 2002
Filed:
Nov. 12, 1999
Applicant:
Inventors:
Dieter Tischer, Wendlingen, DE;
Alfred Trzmiel, Grafenberg, DE;
Dieter Maisch, Riederich, DE;
Herbert Panowitz, Frickenhausen, DE;
Assignee:
Hydraulik-Ring GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 9/02 ;
U.S. Cl.
CPC ...
F01L 9/02 ;
Abstract
A valve control mechanism for intake and exhaust valves of internal combustion engines is provided. The valve control mechanism has at least one piezo element, at least one valve element operated thereby, and at least one adjustment piston. Inflow and outflow of a pressure medium to the adjustment piston is controlled by the valve element. The adjustment piston is moveable by the pressure medium, against a counter pressure, for opening an intake or exhaust valve.