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. 27, 2021
Filed:
Mar. 15, 2016
Nisshin Steel Co., Ltd., Tokyo, JP;
Naofumi Nakamura, Tokyo, JP;
Yudai Yamamoto, Tokyo, JP;
NISSHIN STEEL CO., LTD., Tokyo, JP;
Abstract
A formed materialhaving a cylindrical trunk portionand a flange portionformed at an end section of the trunk portion is manufactured by performing multi-stage drawing of a material metal sheet. Multi-stage drawing includes: preliminary drawing that forms, from a material metal sheet, a preformhaving a trunk element; compression drawing that is performed at least once after the preliminary drawing and that forms the trunk portionby drawing the trunk elementwhile applying a pressure-adjustable compressive force to the trunk element; and finish-ironing that is performed for securing dimensional precision at least once following the compression drawing.