Title:
BOLT
Document Type and Number:
WIPO Patent Application WO/2019/198593
Kind Code:
A1
Abstract:
[Problem] To provide a bolt having improved properties.
[Solution] A bolt 10 having a head 12 and a shaft 14 extending from one end 14a to the other end 14b, wherein, in the shaft 14, one thread 110, being a right-handed thread or a left-handed thread, extends as one thread in the extension direction of the shaft 14, has a first lead angle, and maintains a first distance between adjacent troughs, and the other thread, that is, the left-handed thread or the right-handed thread, extends as two threads along the extension direction. Of the two other threads a first thread 120 has a second lead angle of approximately twice the value of the first lead angle and maintains a second distance between adjacent troughs that is approximately twice the first distance, and of the two other threads a second thread 130 has the second lead angle and maintains the second distance between adjacent troughs. The first thread 120 and the second thread 130 are arranged opposing one another with the first distance between a valley of the first thread 120 and a valley of the second thread 130 adjacent thereto.
Inventors:
FUJISAKI SUSUMU (JP)
FUJISAKI MASASHI (JP)
OHMORI HIROAKI (JP)
FUJISAKI MASASHI (JP)
OHMORI HIROAKI (JP)
Application Number:
PCT/JP2019/014800
Publication Date:
October 17, 2019
Filing Date:
April 03, 2019
Export Citation:
Assignee:
FUJISAKI BYORA INC (JP)
International Classes:
F16B39/16; F16B35/00; F16B39/30
Foreign References:
| JP2006189056A | 2006-07-20 | |||
| JP2003260532A | 2003-09-16 | |||
| JP5894719B2 | 2016-03-30 | |||
| JP5580087B2 | 2014-08-27 | |||
| JP2016133148A | 2016-07-25 | |||
| JP2017082845A | 2017-05-18 | |||
| JP6178105B2 | 2017-08-09 | |||
| JP6224294B2 | 2017-11-01 |
Attorney, Agent or Firm:
ONO Makoto et al. (JP)
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