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Title:
SPACER FOR POSITIONAL ADJUSTMENT OF A RENEWAL PIPE, AND PIPE RENEWAL METHOD EMPLOYING SAME
Document Type and Number:
WIPO Patent Application WO/2019/171801
Kind Code:
A1
Abstract:
A plurality of spacers 50, 70 in which first and second wedge-shaped members are overlaid are disposed around the entire circumference between a renewal pipe 40 and an existing pipe 21 with a thickness corresponding to a gap between the renewal pipe and the existing pipe. The first wedge-shaped members of the spacers 70 disposed at the bottom of the renewal pipe or in the vicinity of the bottom of the renewal pipe are held by a holding member attached to a segment 1 of the renewal pipe, in such a way as to be capable of sliding in the length direction of the pipe. The first wedge-shaped members are held by the holding member in such a way that movement in a direction orthogonal to the length direction and the circumferential direction of the pipe is restricted, preventing the first wedge-shaped members from falling out from the segment under their own weight.

Inventors:
KAMIYAMA Takao (31-27 Daikan-cho, Hiratsuka-sh, Kanagawa 07, 〒2540807, JP)
HASEGAWA Takeshi (31-27 Daikan-cho, Hiratsuka-sh, Kanagawa 07, 〒2540807, JP)
HONDA Fumitaka (31-27 Daikan-cho, Hiratsuka-sh, Kanagawa 07, 〒2540807, JP)
Application Number:
JP2019/002039
Publication Date:
September 12, 2019
Filing Date:
January 23, 2019
Export Citation:
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Assignee:
SHONAN GOSEI-JUSHI SEISAKUSHO K.K. (31-27, Daikan-cho Hiratsuka-sh, Kanagawa 07, 〒2540807, JP)
International Classes:
F16L1/00; E03F7/00; F16L55/18
Attorney, Agent or Firm:
HAYAKAWA Yuzi et al. (Sansui Patent Firm, 4th Floor Akasaka Wing Bldg., 6-6-15, Akasaka, Minato-k, Tokyo 52, 〒1070052, JP)
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