Title:
BOLT NUT
Document Type and Number:
WIPO Patent Application WO/2021/038858
Kind Code:
A1
Abstract:
A bolt nut (1) comprises a nut (2) including a substantially cylindrical nut main body (4), a plurality of nut divided bodies (4a), a substantially cylindrical cover body (5) that covers the nut main body (4), a cover-side tapered part formed on the inner wall of the cover body (5), a nut-side tapered part (4a) formed such that the outer diameter of the outer wall thereof decreases toward one end part of the nut main body (4) so as to correspond to the cover-side tapered part, a spring (6) accommodated together with the nut main body (4) in the cover body (5), and a lid body (7) covering the other end part of the cover body (5), the bolt nut having an irregular pitch such that a bolt thread, which is the thread ridge of the bolt, and a nut thread, which is the thread ridge of the nut main body (4), have different pitches.
Inventors:
NAKAYA TAKAYOSHI (JP)
Application Number:
PCT/JP2019/034240
Publication Date:
March 04, 2021
Filing Date:
August 30, 2019
Export Citation:
Assignee:
NAKAYA SEISAKUSHO CO LTD (JP)
International Classes:
F16B37/10; F16B39/30
Foreign References:
| JPS4922356U | 1974-02-25 | |||
| JPH0972327A | 1997-03-18 | |||
| JP2018112199A | 2018-07-19 | |||
| JPH06330928A | 1994-11-29 | |||
| JP2002168222A | 2002-06-14 |
Other References:
See also references of EP 3809001A4
Attorney, Agent or Firm:
ARAI, Shigeto (JP)
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