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. 23, 2025
Filed:
Jan. 21, 2021
Applicant:
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Inventors:
Christian Ruhl, Friedrichshafen, DE;
Helmut Boehm, St. Ingbert, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 15/00 (2006.01); B22D 17/00 (2006.01); B22D 21/00 (2006.01);
U.S. Cl.
CPC ...
B22D 15/005 (2013.01);
Abstract
A method for producing a cylindrical hollow body () made of aluminum, an aluminum alloy, or a light metal alloy, includes casting a hollow body () such that the hollow body () has an inner and an outer lateral surface () and two axial end faces. The method also includes, during the casting process, making at least one defined notch (') into one or more of the inner lateral surface (), the outer lateral surface (), and the two axial end faces.