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:
Dec. 12, 2000
Filed:
Feb. 17, 1998
Applicant:
Inventors:
Dirk Neubauer, Nachrodt-Wiblingwerde, DE;
Dirk Heintzen, Hagen, DE;
Helmut Schilly, Bergneustadt, DE;
Harald Schmitz, Dortmund, DE;
Assignee:
AFT Atlas Fahrzeugtechnik GmbH, Werdohl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9017 ; 123 9031 ; 7456 / ; 464-2 ;
Abstract
The phase of a camshaft in an internal combustion engine can be changed by the piston rod of a double-acting hydraulic cylinder and piston unit which is controlled by a valve having a spool movable axially by an electromagnet which is adapted to be influenced by a plurality of signals including those from the engine electronics.