Title:
DRIVE SCREW
Document Type and Number:
Japanese Patent JP2012092889
Kind Code:
A
Abstract:
To increase a return stop function while improving workability in fastening.
The drive screw includes: a guide 3 provided at a distal end of a shaft part 2; a first screw 4 provided at a base end of the guide and including a plurality of screw threads 6; a second screw 5 provided at the base end of the first screw and having a screw shape equivalent to that of the first screw; and a head 1 provided at the base end of the shaft part 1. The screw threads 6, 7 of the first and second screws 4, 5 are formed by shifting the phases by a half pitch.
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Inventors:
SHIBUSAWA TETSUO
Application Number:
JP2010239938A
Publication Date:
May 17, 2012
Filing Date:
October 26, 2010
Export Citation:
Assignee:
IWATA BOLT KK
International Classes:
F16B25/00; F16B15/02; F16B15/06
Domestic Patent References:
| JP3120541U | 2006-04-13 | |||
| JP2002081429A | 2002-03-22 | |||
| JP2010127415A | 2010-06-10 | |||
| JP2002106539A | 2002-04-10 | |||
| JPH1151033A | 1999-02-23 | |||
| JPS62124307A | 1987-06-05 | |||
| JPWO2008078460A1 | 2010-04-15 | |||
| JP2007107693A | 2007-04-26 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta