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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.:

US 10088013 B1

PDFFull Text
Date of Patent:
Oct. 02, 2018

Filed:

May. 14, 2014

Manufacturing method for multi-layered ring

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;

Inventors:

Tomohiko Nishiyama, Toyota, JP;

Akira Takashima, Toyota, JP;

Takeshi Umeda, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jermie Cozart

Int. Cl.
CPC ...
C21D 9/40 (2006.01); B21D 53/14 (2006.01); F16G 5/16 (2006.01); B23P 15/00 (2006.01); C23C 8/02 (2006.01); C23C 8/26 (2006.01); C23C 8/10 (2006.01); C23C 8/34 (2006.01); B21D 53/16 (2006.01); C21D 9/50 (2006.01); C21D 1/06 (2006.01);
U.S. Cl.
CPC ...
F16G 5/16 (2013.01); B21D 53/14 (2013.01); B21D 53/16 (2013.01); B23P 15/00 (2013.01); C21D 9/40 (2013.01); C21D 9/50 (2013.01); C23C 8/02 (2013.01); C23C 8/10 (2013.01); C23C 8/26 (2013.01); C23C 8/34 (2013.01); C21D 1/06 (2013.01); C21D 2261/00 (2013.01); Y10T 29/49798 (2015.01); Y10T 29/49813 (2015.01);
Abstract

A manufacturing method includes, cutting out a plurality of rings, polishing the rings, adjusting the plurality of rings so that they exhibit circumferential lengths respectively predetermined for them, nitriding the plurality of rings, and assembling in order to layer the plurality of rings into a multi-layered ring; wherein after the rings are cut out from the pipe, each of them is polished one by one so that their order is not changed; in nitriding, they are subjected to a nitriding process in a state where they are set in a jig in order to keep their order; and in assembling, the rings are assembled so that rings that were parts originally adjacent to each other in a state of the pipe become layers that are adjacent to each other in the multi-layered ring.

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