Method for lubricating surfaces

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11292982
APP PUB NO 20180258364A1
SERIAL NO

15913161

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of lubricating the contact between a first surface coated with a hydrogenous carbon film or coating of type a-C:H, ta-C:H, a-C:H:Me or a-C:H:X, as classified by VDI-Standard VDI 2840 and a second ferrous, preferably steel surface. The method comprises supplying to said contact a lubricating oil composition comprising a major amount of an oil of lubricating viscosity and (a) an oil-soluble or oil-dispersible molybdenum compound in an amount such as to provide between 150 and 1000 ppm by weight of molybdenum to the lubricating oil composition, and (b) between 0.1 and 5% by weight with respect to the weight of the lubricating oil composition of a polymeric organic friction modifier, the organic friction modifier being the reaction product of (i) a functionalised polyolefin, (ii) a polyether, (iii) a polyol and (iv) a monocarboxylic acid chain terminating group.

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Patent Owner(s)

  • INFINEUM INTERNATIONAL LTD

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hartley, Joseph P Oxford, GB 18 39
Laine, Emmanuel Maidenhead, GB 6 29
Stidder, Gregory O E Wantage, GB 1 0

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