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:
Mar. 07, 1995
Filed:
Jul. 02, 1993
Applicant:
Inventors:
Anakkavur T Santhanam, Monroeville, PA (US);
Rajendra V Godse, Greensburg, PA (US);
Dennis T Quinto, Greensburg, PA (US);
Kenneth E Undercoffer, Greensburg, PA (US);
Prem C Jindal, Greensburg, PA (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
428212 ; 428457 ; 428469 ; 428472 ; 428697 ; 428699 ; 428701 ; 428702 ; 428704 ; 428698 ;
Abstract
Provided is a coated cutting tool having a coating and a substrate. The coating includes at least one CVD layer which may have a residual tensile stress and at least one layer having a high residual compressive stress. The outermost layer of the coating is preferably the one containing residual compressive stresses. The substrate is a composite having hard refractory grains.