Apparatus relating to the linings of pipelines and passageways
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United States of America Patent
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Nov 26, 1996
Grant Date -
N/A
app pub date -
Jun 23, 1994
filing date -
Dec 23, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides that where a main underground pipeline or passageway (10) is lined by a lining tube which extends over the connection of a lateral pipe (12) with the main pipeline or passageway (10), the lateral connection can be readily located and the lining tube (44) cut to re-establish the connection, if such as a steel ball or other deposit, which is radiation detectable, is placed on the surface of the pipeline or passageway (10) at a predetermined distance (77) from the said lateral connection.
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