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:
Feb. 19, 2013
Filed:
May. 21, 2008
Mitsuhiro Kakizaki, Fujisawa, JP;
Shinya Kondo, Fujisawa, JP;
Shinichi Takabe, Iwata, JP;
Takaaki Shibata, Iwata, JP;
Mitsuhiro Kakizaki, Fujisawa, JP;
Shinya Kondo, Fujisawa, JP;
Shinichi Takabe, Iwata, JP;
Takaaki Shibata, Iwata, JP;
Kyodo Yushi Co., Ltd., Kanagawa, JP;
NTN Corporation, Osaka, JP;
Abstract
The invention provides a grease composition for constant velocity joint containing the components (a) to (g) below and a constant velocity joint containing said composition. (a) a diurea thickening agent having the following formula (1):RNH—CO—NH—CH--CH—CH--NH—CO—NHR  (1)wherein Rand Rmay be the same or different and represent C-Calkyl groups, (b) an ester synthetic oil, (c) a mineral oil and/or a synthetic hydrocarbon oil, (d) a molybdenum dialkyldithiocarbamate, (e) molybdenum disulfide, (f) a polytetrafluoroethylene, and (g) a zinc dithiophosphate compound. The grease composition of the invention reduces variations in rotational resistance of the constant velocity joint at a low temperature.