Grease composition for electric power steering device, and electric power steering device

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United States of America Patent

PATENT NO 9873851
SERIAL NO

14422530

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Abstract

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Provided are both a grease composition for an electric power steering device and an electric power steering device. The grease composition can keep a sufficiently low coefficient of friction in a sliding area between a steel and a resin over a long period, is less susceptible to being removed from the sliding area, does not cause break down of an oil film, and thus can minimize the occurrence of stick-slips. A grease composition for an electric power steering device, containing a synthetic hydrocarbon oil which exhibits a density of 0.75 to 0.95 g/cm3 at 15° C., a saturated aliphatic amide compound, boron nitride, a glycerin fatty acid partial ester, and a metal soap-based thickener; and an electric power steering device using the grease composition.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTDIBARAKI 312-8503

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Takashi Yokohama, JP 236 2194
Sakai, Kazumi Yokohama, JP 26 295
Shiino, Kohtaro Kanagawa, JP 45 465
Shitara, Yuji Kuki, JP 16 59
Suzuki, Tatsuro Kanagawa, JP 47 276
Taniuchi, Satoshi Kanagawa, JP 6 122

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