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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 12203046 B1

PDFFull Text
Date of Patent:
Jan. 21, 2025

Filed:

Jul. 05, 2021

Grease composition and rolling bearing

Applicants:

Jtekt Corporation, Kariya, JP;

Kyodo Yushi Co., Ltd., Fujisawa, JP;

Inventors:

Kanako Niiya, Osaka, JP;

Kazunori Miyake, Osaka, JP;

Masayuki Murakami, Osaka, JP;

Shota Akimoto, Osaka, JP;

Takahiro Maeda, Osaka, JP;

Kaname Nishi, Osaka, JP;

Michitaka Yoshihara, Fujisawa, JP;

Kazuki Isa, Fujisawa, JP;

Koki Ando, Fujisawa, JP;

Assignees:

JTEKT CORPORATION, Kariya, JP;

KYODO YUSHI CO., LTD., Fujisawa, JP;

Attorney:

Oliff PLC

Primary Examiner:

Vishal V Vasisth

Int. Cl.
CPC ...
C10M 137/10 (2006.01); C10M 125/22 (2006.01); C10M 129/26 (2006.01); C10M 133/12 (2006.01); C10M 169/06 (2006.01); C10N 10/04 (2006.01); C10N 30/08 (2006.01); C10N 30/10 (2006.01); C10N 30/12 (2006.01); C10N 40/02 (2006.01); C10N 50/10 (2006.01);
U.S. Cl.
CPC ...
C10M 137/10 (2013.01); C10M 125/22 (2013.01); C10M 129/26 (2013.01); C10M 133/12 (2013.01); C10M 169/06 (2013.01); C10M 2201/084 (2013.01); C10M 2207/10 (2013.01); C10M 2215/06 (2013.01); C10M 2223/045 (2013.01); C10N 2010/04 (2013.01); C10N 2030/08 (2013.01); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2040/02 (2013.01); C10N 2050/10 (2013.01);
Abstract

The present invention relates to a grease composition including: a base oil; a thickener; a rust inhibitor; and an extreme pressure agent, in which the rust inhibitor includes, with respect to a total mass of the grease composition: 0.10 mass % to 10.00 mass % of a calcium sulfonate; 0.20 mass % to 10.00 mass % of a zinc sulfonate; and 0.10 mass % to 10.00 mass % of a zinc carboxylate, and the extreme pressure agent includes, with respect to the total mass of the grease composition, 2.00 mass % to 14.00 mass % of a zinc dialkyldithiophosphate.

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