Title:
SELF-DRILLING SCREW
Document Type and Number:
WIPO Patent Application WO/2010/083634
Kind Code:
A1
Abstract:
A self-drilling screw consists essentially of a screw head, a rod body, a plurality of screw threads which are formed on the rod body and extended along the axis direction, and a bore tail part, wherein a drilling point is extended forward from the bore tail part by taking the central line as the center, and two symmetrical tangential sections are excavated on both sides of the bore tail part, and the tangential section forms a crumb discharge groove and a side edge and extends backwards, an end edge is formed on the placement of drilling lines between the drilling point and the two side edges, and the end edge shows concave shape, thus it makes the drilling point more protrudent, and shortens the distance of that two side edges drill the object.
More Like This:
| WO/1993/015327 | SELF DRILLING SCREW |
| WO/2016/073339 | WOOD FASTENER |
Inventors:
WANG HIS YUAN (CN)
WANG CHIH-CHANG (CN)
WANG CHIH-CHANG (CN)
Application Number:
PCT/CN2009/001324
Publication Date:
July 29, 2010
Filing Date:
November 26, 2009
Export Citation:
Assignee:
SUN THROUGH IND CO LTD (CN)
International Classes:
F16B25/10
Foreign References:
| CN2929298Y | 2007-08-01 | |||
| CN2773380Y | 2006-04-19 | |||
| CN2861591Y | 2007-01-24 | |||
| JPH11148506A | 1999-06-02 |
Attorney, Agent or Firm:
LIFANG & PARTNERS LAW FIRM (Tower A Nanxincang International Building,No.A22, Dongsishitiao Street, Dongcheng District, Beijing 7, CN)
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