Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic sulfur compound – wherein the sulfur is single bonded...
Reexamination Certificate
2005-03-23
2011-10-18
McAvoy, Ellen (Department: 1771)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic sulfur compound, wherein the sulfur is single bonded...
C508S156000, C508S180000, C508S464000, C508S465000, C508S551000, C508S585000, C508S588000, C508S591000
Reexamination Certificate
active
08039423
ABSTRACT:
Disclosed are a lubricant composition including a lubricating base oil, fine particles and a calcium sulfonate-based thickener, a speed reduction gear filled with the lubricant composition, and an electric power steering apparatus including the speed reduction gear. The invention reduces operating noise of the speed reduction gear, regardless of the amount of backlash that occurs on combining a small gear and a large gear and without a more complicated structure for the speed reduction gear, by action of the fine particles. Further, separation of oil is prevented, by action of the calcium sulfonate-based thickener of the lubricant composition, so that electric power steering apparatus noise within the inside of a car is reduced at a low cost.
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Kasahara Fumiaki
Kitahata Kouji
Okaniwa Takashi
Shirai Yoshimasa
Yamazaki Satoshi
JTEKT Corporation
Kyodo Yushi Co. Ltd.
McAvoy Ellen
Oladapo Taiwo
Rabin & Berdo PC
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