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:
Jun. 15, 1999
Filed:
Mar. 04, 1998
Applicant:
Inventors:
Bjorn Olsson, Huddinge, SE;
Bjorn Ljungberg, Enskede, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Primary Examiner:
Int. Cl.
CPC ...
C20C / ;
U.S. Cl.
CPC ...
4272551 ; 4272481 ; 4272552 ; 4272553 ; 4272557 ;
Abstract
The present invention discloses a coated cutting insert particularly useful for dry milling of grey cast iron. The insert is characterized by a WC--Co cemented carbide substrate and a coating including an innermost layer of TiC.sub.x N.sub.y O.sub.z with columnar grains and a top coating of a fine gained .alpha.-Al.sub.2 O.sub.3 layer.