Placement of pipes in the ground
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United States of America Patent
Stats
-
Feb 27, 1996
Grant Date -
N/A
app pub date -
Jun 30, 1994
filing date -
Oct 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides that an underground through borehole (28) is formed with a reaming tool (24). It is filled with a viscous fluid and as soon as possible after being so filled, a flexible lining tube (32) is inserted into the borehole (28) to keep the surface from collapsing until a rigid service pipe (12) has been pulled or pushed into the borehole.
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Cited Art Landscape
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