Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 24, 2019
Patent Application Number
15865031
Date Filed
January 8, 2018
Patent Citations Received
Patent Primary Examiner
Patent 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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