David Allen Prendergast

US Patent:

7790660, Sep 7, 2010

Filed:

Jan 28, 2005

Appl. No.:

11/045755

Inventors:

James Thomas Carey - Medford NJ, US
David K. Prendergast - Chester PA, US
Kevin J. Buzdygon - Wilmington DE, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10M 129/70
C10M 133/16
C10M 133/44
C10M 133/12

US Classification:

508478, 508514, 508283, 508563

Abstract:

A polyalkylene glycol based lubricant composition that contains specified rust inhibitors and antioxidants has lowered operating temperature and is particularly suitable for use in worm drive gearboxes. The rust inhibitors consist of an N-acylo arcosine and an imidizole while the antioxidant consists of an alkylated diphenyl amine and a hindered phenol.

US Patent:

20060276355, Dec 7, 2006

Filed:

Jun 6, 2006

Appl. No.:

11/447417

Inventors:

James Carey - Medford NJ, US
David Prendergast - Chester PA, US

International Classification:

C10M 105/38

US Classification:

508485000

Abstract:

A lubricant formulation and method of blending a lubricant formulation is disclosed. The lubricant formulation comprises at least two base stocks. The first base stock comprises a viscosity greater than 100 cSt, Kv100 C. The second base stock comprises a viscosity less than 10 cSt, Kv100 C. The lubricant formulation provides excellent micropitting protection for gears including large gears that are used in wind turbines. In addition, the lubricant may also have a viscosity greater than 38 cSt (Kv 100 C.), a viscosity index greater than 161 and micropitting protection level of a FVA 54 micropitting Test Fail Load Stage greater than 10.