Pipe lining method

Details Pipe lining method Pipe lining method

1999-01-27

2000-05-02

Brinson, Patrick

Pipes and tubular conduits

Repairing

Patches

138 97, 4051501, 156287, 264269, F16L 5516

Patent

active

060560177

ABSTRACT:
A pipe lining method provides for precise cutting of a main pipe liner bag along a branch pipe opening using a cutter while preventing the inner wall of a branch pipe and the cutter from damages. After a cutting protection member is attached along the periphery of a branch pipe opening of a main pipe, the main pipe is lined using a main pipe liner bag. Then, a cutter of a cutting robot introduced into the main pipe is driven to cut away a portion of the main pipe liner bag covering a branch pipe opening. Since the cutting protection member functions as a guide for the cutter when cutting the portion of the main pipe liner bag covering the branch pipe opening as well as functions as a protection member for protecting the inner wall of the branch pipe, thereby making it possible to precisely cut the main pipe liner bag along the branch pipe opening using the cutter and to prevent the inner wall of the branch pipe and the cutter from damages.

REFERENCES:
patent: 5329063 (1994-07-01), Endoh
patent: 5439033 (1995-08-01), Kamiyama et al.
patent: 5454401 (1995-10-01), Kamiyama et al.
patent: 5566719 (1996-10-01), Kamiyama et al.
patent: 5598873 (1997-02-01), Kamiyama et al.
patent: 5692543 (1997-12-01), Wood
patent: 5778937 (1998-07-01), Sundermann
UK Patent Application 2041147 Bridgestock, Sep. 1980.

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