Title:
BOLT AND FASTENING STRUCTURE
Document Type and Number:
Japanese Patent JP2019199937
Kind Code:
A
Abstract:
To enable deposits on the inside surface of a female screw to be scraped by screwing the female screw and a bolt, and to make a worker easily sense seating.SOLUTION: A bolt with a shaft 2 and a head comprises: a first thread 11 provided on the head side of the shaft part; and at least one of a thread provided larger in diameter than the first thread and a thread provided wider than the first thread, provided on the tip side of the shaft portion.SELECTED DRAWING: Figure 2
Inventors:
SUZUKI YUICHIRO
YOSHIDA MITSUKI
FURUKAWA AKIHIRO
FUJIMOTO TAKANORI
YOSHIDA MITSUKI
FURUKAWA AKIHIRO
FUJIMOTO TAKANORI
Application Number:
JP2018095857A
Publication Date:
November 21, 2019
Filing Date:
May 18, 2018
Export Citation:
Assignee:
AOYAMA SEISAKUSHO
International Classes:
F16B35/00; F16B25/02; F16B33/02
Domestic Patent References:
| JP2014037893A | 2014-02-27 | |||
| JP3215000U | 2018-02-22 | |||
| JP2008095793A | 2008-04-24 |
Foreign References:
| US3351115A | 1967-11-07 | |||
| EP3211252A1 | 2017-08-30 |
Attorney, Agent or Firm:
Patent Business Corporation Najima Patent Office