Title:
TIGHTENING TORQUE CONTROL TOOL AND COMBINATION OF TIGHTENING TORQUE CONTROL TOOL AND FASTENER
Document Type and Number:
Japanese Patent JP2021053731
Kind Code:
A
Abstract:
To provide a novel tightening torque control tool that can, even when the tightening torque control tool falls and an outer peripheral edge of an outer flange portion collides with a floor surface, prevent cracks from being generated by impact of the collision, from the outer peripheral edge of the outer flange portion toward a through-opening or a recessed portion formed on an outer peripheral surface of the tightening torque control tool.SOLUTION: An amount of radially outward protrusion of an outer flange portion 30 is reduced in each region where a through-opening 14 or a recessed portion is formed.SELECTED DRAWING: Figure 1
Inventors:
KOBAYASHI RYUTA
HASHIMOTO KATSUMI
HASHIMOTO KATSUMI
Application Number:
JP2019178505A
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
Assignee:
NIPPON CLOSURES CO LTD
International Classes:
B25B23/14; F16B31/02
Domestic Patent References:
| JP2018204624A | 2018-12-27 | |||
| JPS59113307A | 1984-06-30 | |||
| JPH0685918U | 1994-12-13 |
Attorney, Agent or Firm:
Naozumi Ono
Sachiko Okunuki
Toshiyuki Kojima
Sachiko Okunuki
Toshiyuki Kojima