Lining of passageways
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United States of America Patent
Stats
-
Apr 25, 1995
Grant Date -
N/A
app pub date -
Jul 6, 1993
filing date -
Nov 8, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An underground pipeline or passageway is lined by having a plastics film pre-liner tube applied thereto by inflation, and the tube whilst inflated has an applicator pulled therethrough from which a fluent curable or hardenable composition issues and is applied directly to the inside of the inflated tube to form a layer which cures or hardens to form a lining. Preferably a second tube is applied to the inside of the composition layer to hold it in position whilst it cures or hardens.
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