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Title:
LOOSENING DETECTION SENSOR AND METHOD FOR DETECTING LOOSENING USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/214909
Kind Code:
A1
Abstract:
This loosening detection sensor 5 detects loosening of a bolt 4 and a nut 6 which are for fixing components 1, 2, the loosening detection sensor 5 comprising an insulating layer 5b and a first conductive layer 5a and a second conductive layer 5b that vertically sandwich the insulating layer 5b, and having a washer shape that is sandwiched between the component 1 and the bolt 4, or between the component 2 and the nut 6 without making direct contact with a shaft 4b of the bolt 4.

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Inventors:
MATSUNAGA ERI (JP)
TSUDA MASAYUKI (JP)
MINOTANI TADASHI (JP)
SHOJI MASANARI (JP)
Application Number:
PCT/JP2020/017318
Publication Date:
October 28, 2021
Filing Date:
April 22, 2020
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
F16B31/00; G01N22/00
Foreign References:
US20140129158A12014-05-08
JP2003034352A2003-02-04
JP2001159572A2001-06-12
JP2018013431A2018-01-25
JP2005069312A2005-03-17
Other References:
MATSUNAGA ERI, MINOTANI TADASHI, TSUDA MASAYUKI: "Fundamental Study of Coating-type Sensor for Detection of Infrastructure Deterioration", ZAIRYO- TO-KANKYO, vol. 68, no. 7, 1 January 2019 (2019-01-01), pages 178 - 181, XP055823277
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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