Pipe blocking technique
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 9, 1999
Issued Date -
N/A
app pub date -
Aug 15, 1997
filing date -
May 11, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for blocking the bore of a pipe comprising moving an inflatable bag along the bore of the pipe from an access point in the pipe to a point where the bore is to be blocked, inflating the bag until it engages the internal wall of the pipe or main and causing the bag to maintain its inflated condition. Where an expandable foam is used.
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