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:
May. 12, 1998
Filed:
Mar. 15, 1996
William A Bryant, McKeesport, PA (US);
A T Santhanam, Monroeville, PA (US);
Kennametal, Inc., Latrobe, PA (US);
Abstract
A coated cutting tool, as well as a method for making tool and a method for the milling of ductile iron using the cutting tool wherein the cutting tool includes a rake face and a flank face with a cutting edge at the juncture there. The cutting tool also presents a coating and a substrate. The substrate comprises a tungsten carbide based cemented carbide having a bulk composition of no more than 7 weight percent tantalum, no more than 3 weight percent niobium, no more than 5 weight percent titanium, no more than 1 weight percent chromium, between about 5 and about 13 weight percent cobalt, and the balance tungsten carbide. The coating has an innermost coating scheme including at least one layer adjacent to the substrate, and an outermost layer comprising titanium carbide applied by chemical vapor deposition layer.