Branch pipe lining bag and pipe lining method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 26, 2000
Grant Date -
N/A
app pub date -
Jan 28, 1999
filing date -
Feb 4, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A branch pipe lining bag wherein an annular protective member is previously fixed on a flange which is provided adjoined to an open end of a tubular bag. This tubular bag is soaked with a hardenable liquid resin and adapted to be everted under fluid pressure into a branch pipe. The protective member can be attached on the marginal periphery of the branch pipe opening to the main pipe simultaneously at the end of the branch pipe lining, irrespective of the inner diameter of the main pipe. Also, a pipe lining method wherein the annular protective member fixed on the flange is prepared previously and then the flange is connected to the part of the main pipe where the branch pipe opens. The main pipe lining bag can be bored without any damage irrespective of both the main pipe diameter and the branch pipe diameter or any connecting situations.
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Cited Art Landscape
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