Pipe lining
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 10, 1999
Grant Date -
N/A
app pub date -
Mar 28, 1997
filing date -
Oct 5, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A tubular liner for a pipe is collapsed on itself to define a pair of lobes. The lobes are folded into a central region so that bending modulus and radius are reduced. The liner can be stored in a tighter coil and can be introduced into an underground pipe to be lined at a more acute angle.
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