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US 6,451,745 B1Granted
High boron formulations for fluids continuously variable transmissions
AssigneeThe Lubrizol Corporation
InventorWilliam C. Ward
Life of this patent
Estimating the term…
Abstract
Continuously variable transmission can be lubricated by supplying to them a composition of (a) an oil of lubricating viscosity; (b) a dispersant; and (c) a detergent. At least one of the dispersant (b) and the detergent (c) is a borated species, and the amount of boron present in the composition is sufficient to impart improved friction and anti-seizure properties to the composition when employed in said transmission.
Claims38
A method for lubricating a continuously variable transmission, comprising supply thereto a composition comprising
- (a) an oil of lubricating viscosity;
- (b) a borated dispersant;
- and
- (c) a borated detergent;
- wherein the amount of boron is at least about 250 parts per million, based on the composition, and is present in an amount sufficient to impart improved friction and antiseizure properties to said composition when employed in said transmission.
2 more elements
A composition comprising
- (a) an oil of lubricating viscosity;
- (b) a borated succinimide dispersant or a borated Mannich dispersant;
- and
- (c) a borated detergent;
- wherein the amount of boron is at least about 250 parts per million, based on the composition, and is present in an amount sufficient to impart improved friction and antiseizure properties to said composition when employed in a continuously variable transmission.
2 more elements
A concentrate comprising
- (a) a concentrate-forming amount of an oil of lubricating viscosity;
- (b) a borated succinimide dispersant or a borated Mannich dispersant;
- and
- (c) a borated detergent;
- wherein the amount of boron is at least about 2500 parts per million, based on the concentrate.
2 more elements
Dependencies are inferred from the claim text.