Invention Grant
- Patent Title: Self-drilling screw
- Patent Title (中): 自钻螺丝
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Application No.: US12302083Application Date: 2007-05-25
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Publication No.: US08192124B2Publication Date: 2012-06-05
- Inventor: Frank Wolpert , Juergen Wanner , Andreas Wunderlich
- Applicant: Frank Wolpert , Juergen Wanner , Andreas Wunderlich
- Applicant Address: DE Kuenzelsau
- Assignee: Adolf Wuerth GmbH & Co. KG
- Current Assignee: Adolf Wuerth GmbH & Co. KG
- Current Assignee Address: DE Kuenzelsau
- Agency: Boyle Fredrickson, S.C.
- Priority: DE102006026176 20060529
- International Application: PCT/EP2007/004658 WO 20070525
- International Announcement: WO2007/137771 WO 20071206
- Main IPC: F16B25/10
- IPC: F16B25/10

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.
Public/Granted literature
- US20090142159A1 Self-Drilling Screw Public/Granted day:2009-06-04
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