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:
Jun. 05, 2012
Filed:
May. 25, 2007
Applicants:
Frank Wolpert, Eschental, DE;
Juergen Wanner, Waldenburg, DE;
Andreas Wunderlich, Kupferzell, DE;
Inventors:
Assignee:
Adolf Wuerth GmbH & Co. KG, Kuenzelsau, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16B 25/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a screw for hard wood, comprising a screw tip () with two cutting edges () 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 () which slightly protrudes from the two cutting edges () is embodied in the extension of the longitudinal axis of the screw. Said centering tip () prevents the screw from deviating to the side at the beginning of the drilling process.