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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 10208833 B1

PDFFull Text
Date of Patent:
Feb. 19, 2019

Filed:

Jun. 25, 2014

Sliding member, chain link, and chain comprising said link

Applicant:

Borgwarner Inc., Auburn Hills, MI (US);

Inventors:

Junichi Eda, Mie, JP;

Yasushi Miyazaki, Mie, JP;

Yukio Yoshida, Mie, JP;

Kazuo Hokkirigawa, Sendai, JP;

Assignee:

BorgWarner Inc., Auburn Hills, MI (US);

Attorney:

BrooksGroup

Primary Examiner:

Jessee R Roe

Int. Cl.
CPC ...
C21D 9/00 (2006.01); F16G 13/04 (2006.01); C22C 38/00 (2006.01); F16H 9/24 (2006.01); C22C 38/12 (2006.01); C22C 38/22 (2006.01); C21D 1/22 (2006.01); B32B 15/01 (2006.01); C21D 1/18 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C23C 8/00 (2006.01);
U.S. Cl.
CPC ...
F16G 13/04 (2013.01); B32B 15/011 (2013.01); C21D 1/18 (2013.01); C21D 1/22 (2013.01); C21D 9/0087 (2013.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/12 (2013.01); C22C 38/22 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C23C 8/00 (2013.01); F16H 9/24 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01);
Abstract

[Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link platesfor a silent chain having pinholesfor inserting linking pinsare formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.

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