Title:
NUT
Document Type and Number:
WIPO Patent Application WO/2018/003226
Kind Code:
A1
Abstract:
A layered nut (10) comprises a plurality of thin nuts (12) formed with through-holes (16) having almost the same diameter. On the inner peripheral surface of each thin nut (12), a plurality of screw threads (18, 38) are formed at predetermined angular spacing so as to protrude toward the inside of the through-hole (16). In this case, the thin nuts (12) are layered along the direction of the central axis (14) so that the through-holes (16) become approximately coaxial. The outer peripheral surfaces of the layered thin nuts (12) are subjected to laser welding or the like, thereby joining the thin nuts (12) and completing the layered nut (10).
Inventors:
NAKAYAMA TORU (JP)
MASUI RYUICHI (JP)
ISHIZAWA NAOHIRO (JP)
MASUI RYUICHI (JP)
ISHIZAWA NAOHIRO (JP)
Application Number:
PCT/JP2017/014363
Publication Date:
January 04, 2018
Filing Date:
April 06, 2017
Export Citation:
Assignee:
SMC CORP (JP)
International Classes:
F16B37/02; F16B37/00; F16H25/24
Foreign References:
| US5785477A | 1998-07-28 | |||
| JP2005114044A | 2005-04-28 | |||
| US20080247842A1 | 2008-10-09 | |||
| JPS5896112U | 1983-06-30 |
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (JP)
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