Appeal No. 1997-3770
Application No. 08/451,888
THE INVENTION
The invention is directed to a lubricating composition containing a major amount of a
lubricating oil, and the combination of a group of additives to improve the antiwear
properties of the lubricating composition.
THE CLAIMS
Claim 1 is illustrative of appellants’ invention and is reproduced below.
1. A lubricating composition comprising a major amount of an oil of lubricating
viscosity
and
(A) an antiwear improving amount of at least one molybdenum containing
composition, and
(B) at least one member selected from the group consisting of
(i) at least one borated overbased metal salt of an acidic organic
compound, provided that (A) and (Bi) are not the same,
(ii) a combination of (a) at least one organic polysulfide or at least one
ashless dithiocarbamate containing composition and (b) at least one component selected
from the group consisting of a metal thiophosphate, a phosphoric acid ester or salt thereof,
a phosphorus-containing carboxylic acid, ester, ether, or amide, a borated dispersant, an
alkali metal borate, a borated fatty amine, a borated phospholipid, a borate ester, and
mixtures thereof, and
(iii) a combination of (i) and (ii) provided that when (A) is a
molybdenum dithiophosphate, then (A) is present in an amount to provide from about
125 to about 900 ppm molybdenum to the lubricating composition.
2
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