Pipe lining method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 15, 2000
Grant Date -
N/A
app pub date -
Feb 3, 1998
filing date -
Feb 4, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe lining method is provided for accurately cutting or punching out a pipe liner bag after being lined on an inner wall of a pipe with a good operability while preventing an operation environment from being contaminated. A fluid pressure is applied to act on a pipe liner bag introduced in a pipe to press the pipe liner bag onto the inner wall of the pipe. A thickness reducing member is brought into contact with the outer surface of the pipe liner bag to partially reduce the thickness of the pipe liner bag. A predetermined pipe lining operation with the above state maintained. Then, an external force is applied to a thickness reduced portion of the pipe liner bag to break the portion.
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