Apparatus for the lining of existing pipes
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United States of America Patent
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Dec 1, 1992
Issued Date -
N/A
app pub date -
Nov 29, 1991
filing date -
May 9, 1988
priority date (Note) -
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Abstract
An apparatus for lining installed pipework which includes a swaging die which is attached directly or indirectly to the pipe to be lined, pulling structure attached to the leading end of the liner pipe and threaded through the pipework to reduce the external diameter of the liner pipe by up to 15%, pushing structure located between the die and the pipework, and heating and cooling apparatus for the liner pipe.
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