Underground pipe replacement method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 16, 1996
Grant Date -
N/A
app pub date -
May 12, 1994
filing date -
May 12, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The underground pipe replacement method and apparatus includes placing a ripping tool having cutting blades into the bore of one end of the existing pipe; pulling the ripping tool through the bore of the existing pipe and cutting a plurality of slots through the wall of the existing pipe; disposing a length of rods throughout the existing pipe as the ripping tool passes through the existing pipe; plugging one end of the ripped pipe and allowing water to pass through the open end of the pipe; allowing the water to stand in the existing pipe and flow through the slots in the pipe and into the formation; softening the earth formation around the pipe; and crushing the existing pipe with a crushing tool.
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