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:
Sep. 29, 2020
Filed:
Jun. 20, 2017
Nisshin Steel Co. Ltd., Tokyo, JP;
Naofumi Nakamura, Tokyo, JP;
Yudai Yamamoto, Tokyo, JP;
Nisshin Steel Co., Ltd., Tokyo, JP;
Abstract
A method for manufacturing a molded member includes carrying out a multi-stage drawing process and at least one finishing ironing process on a base metal sheet, the molded member including a tubular body and a flange formed at an end portion of the body. The multi-stage drawing process includes a preliminary drawing process for forming a preliminary body having a body element from the base metal sheet, and a plurality of compression drawing processes performed after the preliminary drawing process, the compression drawing processes drawing the body element while applying compressive force along a depth direction of the body element to a circumferential wall of the body element. The at least one finishing ironing process is carried out such that a mold clearance of an upper portion of the body element is narrower than a mold clearance of a lower portion of the body element.