Title:
BRANCH PIPE FORMING DEVICE, COMBINED VALVE BODY AND COVER, BRANCH PIPE FORMING DEVICE EQUIPPED WITH COMBINED VALVE BODY AND COVER, AND BRANCH PIPE FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/221045
Kind Code:
A1
Abstract:
Provided are a branch pipe forming device, a combined valve body and cover, a branch pipe forming device equipped with a combined valve body and cover, and a branch pipe forming method, which have high work efficiency. A branch pipe forming device 100 is mounted on an existing pipe W in order to form a branch pipe 2 communicating with a bored hole Wa formed by using a boring device to bore a portion of the outer circumferential surface of the existing pipe W in a state of uninterrupted flow, said branch pipe forming device being provided with a first divided member 3 and a second divided member 4, which respectively have a divided surface 3a and a divided surface 4a along a plane that includes the axis X of the existing pipe W and the axis Y of the branch pipe 2, and which are coupled to each other in a sealed state by a fastening member B. The axis Z of a tubular part 31 is positioned closer to the branch pipe 2 than the outer circumferential surface of the existing pipe W in a cutter accommodation space Sp, coupling openings 33 and 43 which face each other with the bored hole Wa and the cutter accommodation space Sp therebetween are formed at the coupling site of the first divided member 3 and second divided member 4, and the coupling openings 33 and 43 sandwich therebetween an end portion 2A of the branch pipe 2, in a sealed state.
Inventors:
HORIKAWA GOU (JP)
KUWAGAKI DAISUKE (JP)
KUWAGAKI DAISUKE (JP)
Application Number:
PCT/JP2021/016746
Publication Date:
November 04, 2021
Filing Date:
April 27, 2021
Export Citation:
Assignee:
WATERWORKS TECHNOLOGY DEV ORG (JP)
International Classes:
F16L55/00; F16L41/06; F16L41/16
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Attorney, Agent or Firm:
R&C IP LAW FIRM (JP)
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