The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2019
Filed:
Apr. 07, 2014
Applicant:
The Lubrizol Corporation, Wickliffe, OH (US);
Inventors:
Shaun P. Carney, Aston on Trent, GB;
David M. Hobson, Staffordshire, GB;
Assignee:
THE LUBRIZOL CORPORATION, Wickliffe, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 129/54 (2006.01); C10M 141/08 (2006.01); C08K 5/01 (2006.01); C10M 161/00 (2006.01); C10M 165/00 (2006.01);
U.S. Cl.
CPC ...
C10M 161/00 (2013.01); C10M 165/00 (2013.01); C10M 2207/027 (2013.01); C10M 2209/104 (2013.01); C10M 2209/105 (2013.01); C10M 2209/107 (2013.01); C10M 2209/108 (2013.01); C10M 2209/1036 (2013.01); C10M 2215/28 (2013.01); C10M 2219/046 (2013.01); C10N 2220/021 (2013.01); C10N 2230/02 (2013.01); C10N 2230/04 (2013.01); C10N 2230/52 (2013.01); C10N 2240/102 (2013.01); C10N 2240/105 (2013.01);
Abstract
The present invention provides a lubricating composition comprising: an oil of lubricating viscosity; 3 wt % to 30 wt % of an alkaline earth or alkali metal sulphonate detergent; and an oil-soluble polyalkylene glycol having a distribution of molecular weight such that the molecules thereof have a weight of 2500 to less than 10,000 Daltons and comprise 0.05 wt % to 3 wt % of the lubricating composition. The invention further provides a method of lubricating a 2-stroke internal combustion engine cylinder liner (and piston) with the lubricating composition.