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Title:
WATER LEAK REPAIR FITTING
Document Type and Number:
WIPO Patent Application WO/2023/286567
Kind Code:
A1
Abstract:
A water leak repair fitting 1 has: a plurality of metal bands 3 provided so as to be spaced apart from each other in the pipe circumferential direction CD of a fluid pipe 2; a water-stop sheet 5 which is provided to an inner peripheral surface 3a of each of the plurality of metal bands 3, which is formed from an elastic body, and which hermetically seals a space between the metal band 3 and an outer peripheral surface 2b of the fluid pipe 2; and a fastening mechanism 4 which engages the end portions of the plurality of metal bands 3 in the pipe circumferential direction with each other for fastening. An inner peripheral surface 5a of the water-stop sheet 5 has a plurality of first ribs 51 extending in the pipe circumferential direction CD, a plurality of second ribs 52 extending in the pipe axis direction AD, and a plurality of first recessed portions 54. The plurality of first recessed portions 54 are each formed by being blocked by the plurality of first ribs 51 and the plurality of second ribs 52. A pipe axis direction outer end 53e of an outermost rib 53 from among the plurality of first ribs 51 that is located on the pipe axis direction outermost side AD1 is positioned on the pipe axis direction inner side AD2 relative to a pipe axis direction outer end 3e of the metal band 3.

Inventors:
SATO MAKOTO (JP)
OKADA HIROAKI (JP)
SUZUKI KOSUKE (JP)
MORI MITSUHIRO (JP)
Application Number:
PCT/JP2022/025308
Publication Date:
January 19, 2023
Filing Date:
June 24, 2022
Export Citation:
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Assignee:
YOKOHAMA CITY (JP)
TAISEI KIKO CO LTD (JP)
International Classes:
F16L55/172; F16L55/18
Foreign References:
JPS53160821U1978-12-16
JPS57193483U1982-12-08
CN208431507U2019-01-25
JP2009144818A2009-07-02
JP2012018146A2012-01-26
JP2008045943A2008-02-28
JPS5821009A1983-02-07
KR20100095055A2010-08-30
JP2008075884A2008-04-03
JP2011511230A2011-04-07
JPH0719388A1995-01-20
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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