Pressure containment device for everting a flexible liner
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United States of America Patent
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Jun 12, 2001
Grant Date -
N/A
app pub date -
Nov 17, 1998
filing date -
Nov 17, 1998
priority date (Note) -
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Abstract
A pressure containment device enables the installation of an everting liner without requiring a shipping container that can be pressurized. A pressure housing provides an inlet for receiving the liner and an outlet for installing the liner into the borehole. First and second movable belts have first and second sealing surfaces, respectively, for receiving the liner at the inlet of the pressure housing, and first and second interior surfaces for urging the first and second sealing surfaces against the liner when the pressure housing is pressurized. First rollers support the first and second movable belts within the pressure housing.
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