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:
Feb. 18, 2014
Filed:
Jul. 15, 2010
Applicant:
Hyoji Yoshimura, Nagoya, JP;
Inventor:
Hyoji Yoshimura, Nagoya, JP;
Assignees:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Yoshimura Company, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semi-finished product having a hollow and an expansion diameter portion is manufactured in advance (first step), and a press device for folding an outer cylinder () and an inner cylinder () around an entire die set (DS) is used, thereby performing drawing with a body of the semi-finished product as the center in a constant temperature atmosphere at any temperature between a room temperature and 870° C. (second step).