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:
Nov. 10, 2020
Filed:
May. 13, 2016
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Tomohisa Yamashita, Suita, JP;
Sho Takamoto, Osaka, JP;
Hiroyuki Kurokawa, Nishinomiya, JP;
Kunihiro Yabuno, Matsubara, JP;
Ken Yoshino, Guangdong, CN;
Kenji Tamura, Takatsuki, JP;
Junichi Okubo, Amagasaki, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
An apparatus for manufacturing a forged crankshaft includes a pair of upper and lower dies and a first tool. The pair of dies deforms first excess portions and thereby thickens both side portions of a rough crank arm, in a region near a rough pin adjacent thereto. The first tool is fitted in an open space made in the pair of dies, and is capable of coming into contact with a rough-journal-facing surface of the rough crank arm, except the side portions in the region near the adjacent rough pin. The first pair of dies and the first tool have first guides to guide the first tool from a retracting position to a contacting position. The first guides include a first guide disposed on at least one of an upper surface and a lower surface of the first tool.