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:
Oct. 25, 2011
Filed:
Sep. 05, 2007
Maria Åstrand, Storvreta, SE;
Peter Müller, Bad Homburg, DE;
Thomas Schneider, St. Ingbert, DE;
Thomas Heil, Bruchköbel, DE;
Maria Åstrand, Storvreta, SE;
Peter Müller, Bad Homburg, DE;
Thomas Schneider, St. Ingbert, DE;
Thomas Heil, Bruchköbel, DE;
Sandvik Intellectual Property AB, Sandviken, SE;
Abstract
The present invention relates to a drill comprising a cemented carbide or high speed steel substrate and a coating wherein the coating comprises: a first layer system having a multilayered structure covering substantially the whole active part of the drill, a second layer system having a multilayered structure covering only the tip area of the drill. Drills according to the present invention have good wear resistance and improved properties when reconditioning the drill. The present invention also relates to a method of making a drill according to the present invention.