Grease composition for constant velocity joint and constant velocity joint

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United States of America Patent

PATENT NO 8530396
APP PUB NO 20130079158A1
SERIAL NO

13681859

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Abstract

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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):

description='In-line Formulae' end='lead'R1NH—CO—NH—C6H4-p-CH2—C6H4-p-NH—CO—NHR2  (1)description='In-line Formulae' end='tail'

wherein R1 and R2 may be the same or different and represent C8-C20 alkyl 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.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATION3-6-32 NAKANOSHIMA KITA-KU OSAKA-SHI OSAKA 5300005 ?5300005
KYODO YUSHI CO LTDFUJISAWA-SHI KANAGAWA 251-8588

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kakizaki, Mitsuhiro Fujisawa, JP 10 40
Kondo, Shinya Fujisawa, JP 43 189
Shibata, Takaaki Iwata, JP 12 468
Takabe, Shinichi Iwata, JP 28 125

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