REHABILITATING PIPE SEGMENT AND EXISTING PIPE REHABILITATION METHOD USING SAME
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United States of America Patent
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app pub date -
Mar 20, 2013
filing date -
Jul 17, 2008
priority date (Note) -
Abandoned
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Abstract
A rehabilitating pipe segment comprises first and second segment halves linked together to provide a variable-width segment. The first segment half has an internal surface plate, a convex plate extending parallel to the internal surface plate, and a side plate extending perpendicular to the internal surface plate. The second segment half has an internal surface plate, an internal plate extending parallel to the internal surface plate and forming a concavity, and a side plate extending perpendicular to the internal surface plate. The convex plate and a braking rubber are fitted into the concavity to link the first and second segment halves together to provide the variable-width segment. When tension of a specified amount or greater acts on the variable-width segment, the first and second segment halves move relative to each other in the pipe length direction against the braking force of the braking rubber.
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