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Patent Searching and Data


Title:
SCREW NAIL
Document Type and Number:
Japanese Patent JP2000320516
Kind Code:
A
Abstract:

To provide a screw nail which can have its problem points solved, can be easily driven by hammering, and can be easily extracted even in the case of being violently rotated with a power screwdriver.

This screw nail 1, having a sharply formed tip end part 3, is a screw nail 1 comprising a leg part 2, provided with a helical groove 4 and a head part 7 provided with a fitting groove 8 for loosening and/tightening in the upper surface. Here, the helical groove 4, provided in one streak at a 5 to 30 degrees lead angle, constitutes an angle formed by a screw part side surface 6 in a tip end side and a line which is orthogonal to an axial line in the groove at 65 to 85 degrees.


Inventors:
Kanai, Hiroki
Application Number:
JP1999000134251
Publication Date:
November 24, 2000
Filing Date:
May 14, 1999
Export Citation:
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Assignee:
KANAI HIROKI
International Classes:
F16B25/00; F16B15/06; (IPC1-7): F16B15/06; F16B25/00