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. 09, 2024
Filed:
Sep. 13, 2019
Applicant:
Aisin Takaoka Co., Ltd., Toyota, JP;
Inventor:
Toru Kojima, Toyota, JP;
Assignee:
AISIN TAKAOKA CO., LTD., Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 19/08 (2006.01); F01N 13/18 (2010.01); F16L 23/032 (2006.01);
U.S. Cl.
CPC ...
B21D 19/082 (2013.01); F01N 13/1855 (2013.01); F01N 13/1872 (2013.01); F16L 23/032 (2013.01); F01N 2450/24 (2013.01);
Abstract
After an annular plate is blanked from a metal flat plate in a blanking step, an inner peripheral portion of the annular plate is deformed upward in a burring step. As a result, a hat-shaped intermediate product having an upstanding tubular portion and an annular plate portion is formed. After that, an outer peripheral portion of the annular plate portion is folded step by step toward an inner peripheral side of the annular plate portion. As a result, a folded portion composed of a first folded portion and a second folded portion is formed, whereby a connection portion having a second flange portion is formed.