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. 13, 2014
Filed:
Jul. 16, 2008
Uwe Kretzschmann, Wangelau, DE;
Rico Schneider, Pleidelsheim, DE;
Henry Schuett, Sachsenheim, DE;
Matthias Luik, Reutlingen, DE;
Matthias Oettle, Riederich, DE;
Uwe Kretzschmann, Wangelau, DE;
Rico Schneider, Pleidelsheim, DE;
Henry Schuett, Sachsenheim, DE;
Matthias Luik, Reutlingen, DE;
Matthias Oettle, Riederich, DE;
Komet Group GmbH, Besigheim, DE;
Hartmetall-Werkzeugfabrik Paul Horn GmbH, Teubingen, DE;
Abstract
The invention relates to a drilling tool with a base, having a central axis of rotation, and a drill bit, detachably connected to the base. The drill bit has a coupling part, which can be coupled with a coupling receptacle on the face of the base and has at least two convexly curved centring portions, which are arranged such that they are distributed over the circumference and engage with an exact fit in complementary concavely curved centring portions of the coupling receptacle. The coupling part has a complementary driver stop, meshing with a rotary driver of the coupling receptacle. It is claimed as novel that the centring portions of the coupling part and/or of the coupling receptacle have clamping surfaces, which run onto each other in the manner of a rotary wedge until the driver stop and the rotary driver come up against each other counter to a predetermined direction of rotation.