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:
Jul. 16, 2013
Filed:
Aug. 31, 2007
Jacek Kruszynski, Stuttgart, DE;
Uwe Kretzschmann, Besigheim, DE;
Hendrik Nitzsche, Benningen, DE;
Henry Schuett, Sachsenheim, DE;
Jacek Kruszynski, Stuttgart, DE;
Uwe Kretzschmann, Besigheim, DE;
Hendrik Nitzsche, Benningen, DE;
Henry Schuett, Sachsenheim, DE;
Komet Group GmbH, Besigheim, DE;
Abstract
An indexable insert for solid drills has four identical cutting edges () arranged at a distance above a supporting base () and each extending between two cutting-edge corners ('). The cutting edges are each bounded by a cutting face () and a clearance face (), with the inclusion of a wedge angle (b). Of the cutting edges (), one in each case is in an active operating position during the drilling operation. To permit optimum adaptation to the cutting conditions and drilling characteristics, varying over the length of the cutting edge of the drilling tool, it is proposed according to the invention that the height (h) of the four cutting edges (), measured from the plane of the supporting base (), and/or the clearance angle (a) varies over the length of the respective cutting edges ().