Title:
DRIVER
Document Type and Number:
Japanese Patent JP2020028945
Kind Code:
A
Abstract:
To suppress deviation of a washer with respect to a center shaft of a screw section when fastening a male screw having the screw section passed with the washer to a prescribed object.SOLUTION: A driver is usable when fastening a male screw. The driver includes: a holding section; a shaft section which has a base end side fixed to the holding section; a cylindrical holder in which an insertion hole along the shaft section is provided at the center and the shaft section is inserted into the insertion hole; and a connection member which connects the holder and the holding section. A recess which has a circular opening having a center on a center shaft of the insertion hole on a tip side of the holder is formed at the tip. When fastening the male screw, the tip of the shaft section is inserted into a cavity of a head of the male screw and at the same time, a washer inserted into a screw section of the male screw can be stored in the recess.SELECTED DRAWING: Figure 3
Inventors:
ONAKA MASAGEN
Application Number:
JP2018155657A
Publication Date:
February 27, 2020
Filing Date:
August 22, 2018
Export Citation:
Assignee:
DISCO ABRASIVE SYSTEMS LTD
International Classes:
B25B15/00; B25B13/54; B25B23/02
Domestic Patent References:
| JP2001138257A | 2001-05-22 | |||
| JPS5662867U | 1981-05-27 | |||
| JPS5541261U | 1980-03-17 | |||
| JPH0387579U | 1991-09-05 |
Attorney, Agent or Firm:
Akira Matsumoto
Tomohiro Okamoto
Kasahara Takahiro
Ei Okamoto
Takayuki Okano
Tomohiro Okamoto
Kasahara Takahiro
Ei Okamoto
Takayuki Okano