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:
Sep. 02, 2014
Filed:
Nov. 17, 2011
Applicants:
Nathan Knotts, San Mateo, CA (US);
Allan George Hee, Orinda, CA (US);
Inventors:
Nathan Knotts, San Mateo, CA (US);
Allan George Hee, Orinda, CA (US);
Assignee:
Chevron U.S.A. Inc., San Ramon, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10M 129/76 (2006.01); C10M 169/04 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10N 2230/41 (2013.01); C01M 2209/084 (2013.01); C10M 2203/1025 (2013.01); C01M 169/041 (2013.01); C10N 2240/06 (2013.01); C10M 2207/28 (2013.01); C10N 2230/06 (2013.01); C10N 2230/42 (2013.01); C10N 2230/43 (2013.01); C10M 2203/1006 (2013.01); C10M 2203/1065 (2013.01); C10M 2209/102 (2013.01);
Abstract
This invention discloses a lubricant suitable for use in percussion equipment. The lubricant comprises a base oil selected from the group consisting of Group I or Group II, blended in a synergistic amount with a gear oil package and a friction modifier. The lubricant exhibits superior wear and superior extreme pressure properties due to the synergistic effect of the gear oil package and the friction modifier. In a preferred embodiment, the gear oil package comprises a polyalkyl methacrylate polymer, and the friction modifier comprises a synthetic ester.