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. 14, 2023
Filed:
Feb. 10, 2020
Applicant:
Federal-mogul Valvetrain Gmbh, Barsinghausen, DE;
Inventors:
Assignee:
Federal-Mogul Valvetrain GmbH, Barsinghausen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21D 53/84 (2006.01); B21K 1/22 (2006.01); F01L 3/20 (2006.01); B21D 51/10 (2006.01); B23P 15/00 (2006.01);
U.S. Cl.
CPC ...
B21D 53/84 (2013.01); B21D 51/10 (2013.01); B21K 1/22 (2013.01); B23P 15/002 (2013.01); F01L 3/20 (2013.01); F01L 2303/00 (2020.05); F01L 2303/01 (2020.05);
Abstract
A method for producing a valve body of a hollow valve includes providing a workpiece blank or semi-finished product, spin extruding the workpiece to produce a preform having a cup with a hollow shape formed by the cup wall. A hollow valve produced by this method is also provided.