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. 10, 1985
Filed:
Aug. 27, 1984
Rao R Nimmagadda, Fountain Valley, CA (US);
Smith International, Inc., Newport Beach, CA (US);
Abstract
Rolling cone rock bit seal and bearing hard surfaces having been made fully ready for assembly are first provided thin overlay coatings to enhance the resistance of the surfaces to both wear and corrosion. The coating is an engineering ceramic comprised of at least one nonmetallic element selected from a list consisting of C, O, and N, combined with at least one metallic element selected from a list consisting of Ti, Hf, Zr, Nb, Ta, W, B, Al, Co, and Cr. In a modified physical vapor deposition process, the selected coating will be developed at a temperature not to exceed 400.degree. Fahrenheit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile