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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 10947471 B1

PDFFull Text
Date of Patent:
Mar. 16, 2021

Filed:

Oct. 11, 2019

Grease composition and rolling bearing

Applicant:

Jtekt Corporation, Osaka, JP;

Inventors:

Takeshi Tsuda, Kashiba, JP;

Yurie Hagino, Kashihara, JP;

Assignee:

JTEKT CORPORATION, Osaka, JP;

Attorney:

Oliff PLC

Primary Examiner:

Prem C Singh

Assistant Examiner:

Francis C Campanell

Int. Cl.
CPC ...
F16C 33/20 (2006.01); C10M 173/02 (2006.01); C10M 107/02 (2006.01); C10M 125/30 (2006.01); C10M 169/02 (2006.01); C10M 169/06 (2006.01); C10M 159/12 (2006.01); C10M 135/18 (2006.01); F16C 19/00 (2006.01); C10M 119/24 (2006.01); C10N 20/02 (2006.01); C10N 40/02 (2006.01); C10N 30/10 (2006.01);
U.S. Cl.
CPC ...
C10M 107/02 (2013.01); C10M 119/24 (2013.01); C10M 125/30 (2013.01); C10M 135/18 (2013.01); C10M 159/12 (2013.01); C10M 169/02 (2013.01); C10M 169/06 (2013.01); F16C 19/00 (2013.01); C10M 2201/103 (2013.01); C10M 2205/003 (2013.01); C10M 2215/065 (2013.01); C10M 2217/045 (2013.01); C10M 2219/068 (2013.01); C10M 2290/00 (2013.01); C10N 2020/02 (2013.01); C10N 2030/10 (2013.01); C10N 2040/02 (2013.01);
Abstract

A grease composition includes base oil, a thickener, and an inorganic additive. The base oil is a poly-α-olefin having a base oil kinematic viscosity of 15 to 50 mm/s at 40° C. The thickener is a diurea expressed by Structural Formula (1). The content of the thickener is 10 to 22 mass % with respect to the total amount of the base oil and the thickener. The inorganic additive is a mixture containing sepiolite and bentonite, and is organically modified. The content of the inorganic additive is 2 to 20 mass % with respect to the total amount of the base oil and the thickener.R—NHCONH—R—NHCONH—R  (1)

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