Method and apparatus for removing tuberculation from...

Details Method and apparatus for removing tuberculation from... Method and apparatus for removing tuberculation from...

2007-05-18

2010-11-09

Kornakov, Michael (Department: 1714)

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

C134S022110, C134S022120, C134S022180, C134S034000, C134S042000

Reexamination Certificate

active

07828903

ABSTRACT:
A method for removing pipe tuberculation includes the initial step of preparing an access point in the existing pipe by digging to the pipe and sawing a section from the pipe or creating an access port. The section of the pipeline to have its tuberculation removed is isolated by closing valves or creating another access point and sealing the end. Then, a reaming tool is introduced to the interior of the pipe. The reaming tool is attached to a hollow rod string capable of producing moderate thrust and pullback force, and must also produce sufficient torque when rotated. A horizontal directional drilling or “HDD” machine on the surface or in a pit dug out for this purpose applies the aforementioned forces to the rod string.

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patent: 2004/0118565 (2004-06-01), Crawford
“Cempipe, Ltd.,” “Creating a Middle Ground in Waterline Rehabilitation,” Nick Aubko, www.cempipe.com, May 18, 2007, 5 pages.

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