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:
Jan. 12, 2010
Filed:
Apr. 28, 2005
Charles P. Harris, Ann Arbor, MI (US);
Kathleen Maher Anguish, Whitmore Lake, MI (US);
Anthony Krpan, Oakville, CA;
Charles P. Harris, Ann Arbor, MI (US);
Kathleen Maher Anguish, Whitmore Lake, MI (US);
Anthony Krpan, Oakville, CA;
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
Metalworking fluids contain active sulfur, a certain kind of inactive sulfur called 'available sulfur', and fat in a base oil of a lubricating viscosity. The metalworking fluids are chlorine free and phosphorous free. Boundary lubrication is provided by the fat, while extreme pressure lubrication is provided by the sulfur. Available sulfur is inactive sulfur minus any contribution of inactive sulfur from sulfurized saturated fats. Active sulfur and available sulfur are present in balanced proportions, while fat is present at an amount effective to provide boundary lubrication. Use of the fluids reduces tool wear over a long period of action and over a variety of boundary and extreme pressure conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile