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:
Jul. 10, 2018
Filed:
May. 28, 2015
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Hideki Homma, Inuyama, JP;
Akiyoshi Yamamoto, Nisshin, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/14 (2006.01); B21D 53/88 (2006.01); B21C 37/18 (2006.01); F01N 13/18 (2010.01);
U.S. Cl.
CPC ...
B21D 5/14 (2013.01); B21C 37/185 (2013.01); B21D 53/88 (2013.01); F01N 13/1872 (2013.01); F01N 13/1894 (2013.01); Y10T 29/494 (2015.01); Y10T 29/49398 (2015.01);
Abstract
A manufacturing method of a sub-muffler outer cylinder is provided. The manufacturing method includes pushing one push roll toward two receive rolls, and then bending a plate-shape workpiece to form the sub-muffler outer cylinder made of a cylindrical-shaped body. A push-in amount in a part of the workpiece corresponding to a corner part of the cylindrical-shaped body is made larger than a push-in amount in a part of the workpiece corresponding to a side part of the cylindrical-shaped body to form the cylindrical-shaped body having a polygonal cross-sectional shape.