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:
Mar. 26, 2019
Filed:
Dec. 10, 2013
Applicant:
Topy Kogyo Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
Topy Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K 1/00 (2006.01); B21D 53/26 (2006.01); B60B 3/04 (2006.01); B21D 22/02 (2006.01); B21D 35/00 (2006.01); B21K 1/28 (2006.01);
U.S. Cl.
CPC ...
B21D 53/265 (2013.01); B21D 22/02 (2013.01); B21D 35/006 (2013.01); B60B 3/04 (2013.01); B21K 1/28 (2013.01); B60B 2310/206 (2013.01); B60B 2310/213 (2013.01); B60B 2360/102 (2013.01); B60B 2360/141 (2013.01); B60B 2900/212 (2013.01); B60B 2900/325 (2013.01); Y10T 29/49506 (2015.01);
Abstract
A method of manufacturing a large- or medium-sized wheel disk including using a punch or die in a first step of ironing a blank of a flat plate to a first-stage product. The first-stage product having a cylindrical rising portion with an axially non-constant thickness. The rising portion includes a thick portion located at a tip portion of the rising portion and a thickness-reduced portion which is a remaining portion of the rising portion excluding the thick portion. During the first step, only a portion of the blank corresponding to the thickness-reduced portion is ironed.