Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Sulfurized compound of indeterminate structure – which is a...
Reexamination Certificate
2005-01-18
2005-01-18
McAvoy, Ellen M. (Department: 1764)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Sulfurized compound of indeterminate structure, which is a...
C508S419000, C508S433000, C508S436000, C508S569000
Reexamination Certificate
active
06844300
ABSTRACT:
Gear oils meeting GL-5 specifications are obtained by blending a base oil, a thermally stable phosphorus-containing anti-wear agent; and a metal-free sulfur-containing extreme-pressure agent; wherein the thermally stable phosphorus-containing anti-wear agent is present in an amount sufficient to provide from 100 to 350 ppm phosphorus to the formulated gear oil and wherein the metal-free sulfur-containing extreme-pressure agent is present in an amount sufficient to provide at least 10,000 ppm sulfur to the formulated gear oil and wherein the formulated gear oil contains 350 ppm of phosphorus or less.
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Smalheer et al, “Lubricant Additives”, Section I-Chemistry of Additives, p. 1-11, 1967.
Barber Rodney I.
Ellis David R.
Milner Jeffrey L.
Sheets Roger M.
Ethyl Corporation
McAvoy Ellen M.
Rainear Dennis H.
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