Invention Grant
- Patent Title: Pipe loosening device and method
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Application No.: US17697468Application Date: 2022-03-17
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Publication No.: US11982394B2Publication Date: 2024-05-14
- Inventor: John A. Olander
- Applicant: TT Technologies, Inc.
- Applicant Address: US IL Aurora
- Assignee: TT Technologies, Inc.
- Current Assignee: TT Technologies, Inc.
- Current Assignee Address: US IL Aurora
- Agency: Schwegman Lundberg & Woessner, P.A.
- The original application number of the division: US15865031 2018.01.08
- Main IPC: F16L55/18
- IPC: F16L55/18 ; E21B19/16 ; F16L1/024 ; F16L1/028 ; F16L1/032 ; F16L1/06 ; F16L55/165 ; F16L55/30 ; F16L55/40 ; F16L55/16

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.
Public/Granted literature
- US20220268390A1 PIPE LOOSENING DEVICE AND METHOD Public/Granted day:2022-08-25
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