Invention Grant
- Patent Title: Pipe loosening device and method
-
Application No.: US15865031Application Date: 2018-01-08
-
Publication No.: US10422441B2Publication Date: 2019-09-24
- 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.
- Main IPC: F16L55/18
- IPC: F16L55/18 ; F16L1/028 ; F16L55/30 ; F16L55/40 ; E21B19/16 ; F16L1/024 ; F16L1/032 ; F16L1/06 ; 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
- US20180195641A1 PIPE LOOSENING DEVICE AND METHOD Public/Granted day:2018-07-12
Information query