Method of installing or replacing underground pipe
AssigneeTT Technologies, Inc.
InventorChristian J. Brahler
Life of this patent
Estimating the term…
Abstract
The present invention is directed toward a method for replacing or lining existing underground pipe. The present invention replaces the pipe between two manholes without the need to dig associated trenches. A diagonal pilot hole is formed by a piercing tool. A guide cable is passed through the existing pipe and pilot hole and attached to a ramming tool operative in bringing new pipe through the pilot hole, and into the existing pipe. The ramming tool bursts the existing pipe into the surrounding soil and replaces the existing pipe with the new pipe.
Claims9
A method of replacing existing underground pipe, said existing pipe including a lumen and an associated longitudinal axis, said existing pipe being surrounded by soil, said method comprising the steps of:
- forming a diagonal pilot hole between said existing pipe and a upper ground surface, and;
- forcing a ramming tool through said pilot hole and said existing pipe, said ramming tool operative in placing a new pipe having an associated longitudinal axis so that said associated longitudinal axis of said new pipe is substantially the same as said longitudinal axis of said existing pipe.
A method of replacing existing underground pipe, said existing pipe including a lumen and being surrounded by soil, said method comprising the steps of:
- forming an entry pilot hole with a piercing tool, said pilot hole positioned upstream of said existing pipe, and;
- drawing new pipe through said pilot hole and said existing pipe with a ramming tool.
Dependencies are inferred from the claim text.