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:
Oct. 14, 2014
Filed:
Oct. 15, 2010
Applicants:
Minoru Namiki, Fujisawa, JP;
Daming Dong, Fujisawa, JP;
Terasu Yoshinari, Fujisawa, JP;
Inventors:
Assignee:
Kyodo Yushi Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 115/08 (2006.01); C10M 137/10 (2006.01); C10M 169/02 (2006.01); C10M 169/00 (2006.01);
U.S. Cl.
CPC ...
C10M 169/00 (2013.01); C10N 2230/02 (2013.01); C10M 2207/2805 (2013.01); C10M 2223/045 (2013.01); C10N 2240/02 (2013.01); C10M 169/02 (2013.01); C10M 2207/129 (2013.01); C10M 2207/2835 (2013.01); C10M 2203/1025 (2013.01); C10M 2205/0285 (2013.01); C10M 2219/046 (2013.01); C10N 2230/12 (2013.01); C10M 2215/1026 (2013.01); C10M 2207/127 (2013.01); C10N 2250/10 (2013.01); C10M 2207/0406 (2013.01); C10M 2217/0456 (2013.01); C10N 2210/02 (2013.01); C10M 2219/044 (2013.01); C10M 2207/026 (2013.01); C10N 2230/52 (2013.01);
Abstract
The invention provides a grease composition for bearings used in wind power generators, containing a base oil which has a kinematic viscosity of 10 to 70 mm/s at 40° C. and a pour point of −40° C. or less, and a diurea compound as a thickener, for example, a diurea compound represented by formula (1) where Rand Rare both C8-alkyl group. The grease composition for bearings used in wind power generators according to the invention can meet the requirements in terms of the seizure life and the pumpability as well as the fatigue life (flaking life).