Method and apparatus for repairing casings and the like
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United States of America Patent
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Sep 10, 1991
Issued Date -
N/A
app pub date -
Jan 4, 1990
filing date -
Jan 10, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved device and process for creating a lining in a bore transfers strip wrapped in overlapping spiral fashion about a mandrel to the bore wall such that the edge-to-edge relation of the spirally-wrapped strip is maintained from the mandrel to the bore wall. Adhesive is applied to the strip surface during wrapping thereof on the mandrel. The invention provides a new bore with a thin, strong, corrosion resistant lining over a preselected portion of its length that is substantially pressure tight internally and externally and leak proof thus permitting substantial reuse of the lined bore.
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