Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Inorganic compound
Reexamination Certificate
2011-01-11
2011-01-11
Caldarola, Glenn A (Department: 1771)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Inorganic compound
C508S168000, C508S552000
Reexamination Certificate
active
07867956
ABSTRACT:
A urea-based lubricating grease composition comprising (a) as a thickener, a diurea compound which is an alkyldiurea compound having an average molecular weight in the range of from 600 to 700, wherein in the range of from 25 to 60 mole % of the total alkyl groups is an unsaturated component, and the total amine value of the primary amine constituting the raw material is in the range of from 250 to 350, (b) a base oil having as its main component one or more synthetic hydrocarbon oil(s) having a pour point of −40° C. or below, wherein the kinematic viscosity of the base oil is 6000 mm2/sec or less at −40° C., and (c) as additives, a mixture comprising an oil-soluble organic molybdenum complex, an oil-soluble organic zinc compound of dithiocarbamic acid, an oil-soluble organic zinc compound of dithiophosphoric acid and an inorganic sulphur compound; and a roller bearing and electric power steering device wherein the said lubricating grease composition is used as the lubricant.
REFERENCES:
patent: 6444621 (2002-09-01), Okaniwa et al.
patent: 6800595 (2004-10-01), Ozaki et al.
patent: 2003/0176295 (2003-09-01), Ozaki et al.
patent: 2004/0198617 (2004-10-01), Kinoshita et al.
patent: 2004/0224859 (2004-11-01), Numazawa et al.
patent: 2006/0068996 (2006-03-01), Kuwabara et al.
patent: 2009/0065287 (2009-03-01), Kuwabara et al.
patent: 4393753 (1997-07-01), None
patent: 5066435 (1993-03-01), None
patent: 200164665 (2002-09-01), None
patent: 2002308125 (2002-10-01), None
patent: 2002363589 (2002-12-01), None
patent: 2002363590 (2002-12-01), None
patent: 2002371290 (2002-12-01), None
patent: 2003003185 (2003-01-01), None
patent: 2003335249 (2003-11-01), None
patent: 2004114972 (2004-04-01), None
patent: 2004122858 (2004-04-01), None
patent: 2004144118 (2004-05-01), None
patent: WO9905240 (1999-02-01), None
patent: WO0212418 (2002-02-01), None
patent: WO2004053032 (2004-06-01), None
International Search Report dated Mar. 9, 2006.
Asakura Toshihiro
Kawamura Yasushi
Kuwabara Hirofumi
Ozaki Takahiro
Sugimori Shigeyuki
Caldarola Glenn A
Shell Oil Company
Stewart Charles W.
Vasisth Vishal
LandOfFree
Urea-based lubricating grease composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Urea-based lubricating grease composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Urea-based lubricating grease composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2676245