Apparatus and method for heat curing of pipe liners
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United States of America Patent
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Jul 7, 2015
Grant Date -
Mar 15, 2012
app pub date -
Aug 1, 2011
filing date -
Jul 30, 2010
priority date (Note) -
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Abstract
An apparatus and method that accelerates curing of resin in a liner for a buried pipe includes an air inversion unit connected to an air compressor. The apparatus include a curing cap having an inflation port, a curing port and a drainage port. A remote source of pressurized fluid is placed in fluid communication with the inflation port. The apparatus also includes a manifold having an outlet, a first inlet in valved fluid communication with a heated fluid source, a second inlet in valved fluid communication with a pressurized fluid source and a third inlet in valved fluid communication with the drainage port. A flexible tube is slidably received by the curing port while maintaining a substantially fluid-tight seal. The flexible tube has a first end in fluid communication with the outlet of the manifold and the second end has a substantially spherical guide thereon. The second end of the flexible tube also includes a plurality of perforations to allow fluids to pass there through.
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