Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Frank Wolpert0
Andreas Wunderlich0
Juergen Wanner0
Date of Patent
June 5, 2012
0Patent Application Number
123020830
Date Filed
May 25, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Disclosed is a screw for hard wood, comprising a screw tip (3) with two cutting edges (5) that extend approximately parallel to each other and perpendicular to the longitudinal axis of the screw. The cutting angle of the cutting edges amounts to about 90°. A centering tip (7) which slightly protrudes from the two cutting edges (5) is embodied in the extension of the longitudinal axis of the screw. Said centering tip (7) prevents the screw from deviating to the side at the beginning of the drilling process.
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