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:
Nov. 26, 1996
Filed:
Dec. 28, 1993
Helmut Riemscheid, 5204 Lohmar 21, DE;
Karl Weiss, 5205 St. Augustin, DE;
Herbert Frielingsdorf, 5204 Lohmar 1, DE;
Peter Amborn, 5206 Neunkirchen-Seelscheid 1, DE;
Stefan Magirius, 5300 Bonn, DE;
Klaus Greulich, 5357 Heimerzheim, DE;
Gretel Schmidt, 5206 Neunkirchen, DE;
Peter Urban, 5000 Koln 30, DE;
Other;
Abstract
A cam shaft for valve operation in an internal combustion engine comprises two shaft elements of which the first (101, 201) is disposed inside the second (102, 202) and can be moved relative thereto angularly and/or axially. First cam elements (107, 207) provided on the first shaft element have at least lobe portions which extend radially outwardly through slots in the second shaft element to provide a cam surface, while second cam elements are provided on the second shaft element. The first and/or the second shaft element may comprise a number of individual tubular sections joined to one another.