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:
May. 23, 2023
Filed:
Jan. 31, 2019
Applicant:
Federal-mogul Valvetrain Gmbh, Barsinghausen, DE;
Inventors:
Assignee:
Federal-Mogul Valvetrain GmbH, Barsinghausen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21D 22/16 (2006.01); B21K 1/22 (2006.01); F01L 3/14 (2006.01); F01L 3/20 (2006.01); F16K 1/36 (2006.01); F16K 49/00 (2006.01);
U.S. Cl.
CPC ...
B21D 22/16 (2013.01); B21K 1/22 (2013.01); F01L 3/14 (2013.01); F01L 3/20 (2013.01); F01L 2303/00 (2020.05); F16K 1/36 (2013.01); F16K 49/007 (2013.01);
Abstract
A production method for a valve body of a hollow valve includes providing a preform with a valve head and a tubular wall which surrounds a cylindrical cavity. The tubular wall is flow formed above a flow forming mandrel which is inserted into the cavity in order to increase a length of the tubular wall. A hollow valve produced by flow forming is also disclosed.