Title:
NUT
Document Type and Number:
Japanese Patent JP2015227670
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a nut which can be retightened even in the case where the nut cannot be rotated integrally with a member to be fastened while the nut is fixed to the member to be fastened.SOLUTION: This invention comprises a casing having a cylindrical inner space and a screw member inserted into the casing. The screw member is a substantial cylindrical member having a tapered hole, a diameter of which is expanded rearward. A tapered surface of the tapered hole is provided with a plurality of guide walls properly spaced apart from each other and arranged in a circumferential manner. Each of divided threads is movably arranged between the adjoining guide walls in an axial direction of the tapered surfaces to form a female thread part corresponding to a male thread. Biasing means for always biasing the divided thread forward is provided in the screw member and there is provided rotary means for rotating the screw member.
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| JP4718062 | nut |
Inventors:
TAGAWA TOSHIKAZU
Application Number:
JP2014112393A
Publication Date:
December 17, 2015
Filing Date:
May 30, 2014
Export Citation:
Assignee:
UNION CORP
International Classes:
F16B37/10; E05B1/00
Domestic Patent References:
| JPH048481A | 1992-01-13 | |||
| JP2013234731A | 2013-11-21 | |||
| JPH07197922A | 1995-08-01 | |||
| JPS60117736U | 1985-08-09 |
Attorney, Agent or Firm:
Kazuyoshi Tsujimoto
Nozomi Tsujimoto
Minako Kanazawa
Nozomi Tsujimoto
Minako Kanazawa
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