Method of permanently repairing a pipeline section using a combination wrap and sleeve structure
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United States of America Patent
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-
Jan 6, 2009
Grant Date -
Jan 25, 2007
app pub date -
Jul 13, 2006
filing date -
Sep 17, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a permanent method of repairing leaking, damaged, or weakened pipe by grit blasting the pipe (10), followed by wrapping it with a fiber reinforced composite material (12), then installing two half oversized steel sleeves (14). After that the non-gaseous matter is removed by fresh water and compressed air or inert gas. An epoxy or cementitious grout or combination of both is finally injected into annular chamber 20 of the sleeves through pre-installed inlet port (16) and outlet port (18). The epoxy or cementitious is then allowed to cure. The terminal end of the steel sleeves may be sealed using a pair end flanges (32) matingly securable to a pair of terminator bodies (45).
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