Installation of lateral linings with sealing collar from the main pipeline out
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United States of America Patent
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-
Apr 29, 1997
Issued Date -
N/A
app pub date -
Feb 27, 1995
filing date -
Apr 23, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A liner for a lateral pipe which leads into a main pipe having at one end a collar for installation at the location where the lateral liner meets the main, the collar extending along the interior of the main seating against the opening of the lateral. The liner mounted in a launching device is installed by everting the liner through an opening in the collar by means of fluid under pressure supplied through a pressure pipe in the launching device, the launcher held in position by an inflatable bladder which is inflated by said fluid, and against the collar for sealing the lateral/main pipe junction.
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