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. 07, 1992
Filed:
Jan. 14, 1991
Hans-Jurgen Breuer, Overath, DE;
Wolfgang Maus, Bergisch-Gladbach, DE;
Rudolf Schulze, Munich, DE;
Helmut Swars, Bergisch-Gladbach, DE;
Hans Hanswillemenke, Cologne, DE;
Helmut Riemscheid, Wahlscheid, DE;
Karl Weiss, St. Augustin, DE;
Herbert Frielingsdorf, Lohmar, DE;
Engelbert Schwarz, Ruppichteroth, DE;
Heribert Grewe, Overath, DE;
Klaus Greulich, Heimerzheim, DE;
Emitec Gesellschaft fur Emissionstechnologie mbH, Lohmar, DE;
Abstract
In the production of an assembled camshaft slid-on elements, such as control cams, bearing rings, gear wheels or bevel gears, are placed on an axially extending shaft tube. The slid-on elements are secured in place by expanding the shaft tube in the region of the elements by applying internal pressure. In producing the camshaft, a high strength material is used for the slid-on elements and an inferior strength material for the shaft. In the expanding step, an axially extending portion of the shaft tube is plastically deformed and the slid-on element is predominately elastically deformed. After expansion, the outer zone of the slid-on elements are elongated in the tangential direction in the range of 1%.