PIPE LOOSENING DEVICE AND METHOD
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United States of America Patent
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Issued Date -
Sep 5, 2024
app pub date -
May 13, 2024
filing date -
Jan 9, 2017
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Abstract
A pipe loosening device and methods are shown. In one example, the pipe loosening device enables a method wherein a pipe to be replaced is deformed but not burst, and a portion of a sidewall of the pipe is forced outward into the surrounding soil to compact a local region of the surrounding soil and loosen the existing pipe. The pipe may then pulled from the ground along an axis of the pipe.
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