Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Peter Haenle0
Date of Patent
November 20, 2007
0Patent Application Number
112683200
Date Filed
November 7, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A drill for hard materials, comprising webs that are subdivided by means of cutting grooves, and at least one principal cutting edge, each of which is provided with a cutting corner and a transition to a chisel edge. At least some sections of the principal cutting edge are continuously convex in an axial direction starting from the cutting edge.
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