Lining of pipelines or passageways
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United States of America Patent
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Jan 24, 1995
Grant Date -
N/A
app pub date -
Jun 29, 1992
filing date -
Jan 18, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The method provides that a pipeline (10) or passageway (10) wall is coated using a backstop means, a body of resinous material (6) and an everting tube (5). These items are located inside the passageway to be lined and moved there along with the backstop (1) providing support for the bulk of resin material and also applying pressure via the resin material onto the everting face (16). When the everting tube is a resin absorbent material, the presence of the bulk of the fluent material prevents air from becoming entrained in the everting face and prevents voids in final lining. The resin may be introduced via a tee piece (12) through the lag thereof while the everting tube is introduced along the arms of the tee.
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