Method for reconstructing corroded pipes

Details Method for reconstructing corroded pipes Method for reconstructing corroded pipes

1997-06-06

1999-03-30

Ferensic, Denise L.

Pipes and tubular conduits

Repairing

138 98, 405184, F16L 5518

Patent

active

058876278

ABSTRACT:
A method for reconstructing corroded pipes is disclosed in which a long, new pipe can be inserted smoothly and without excessive force, into an older pipe. The method involves the insertion of a new pipe into an old pipe using a dolly to transfer the reaction force. The tail end of the new pipe is attached to the dolly, and the front end of the new pipe is sealed off. A plug is inserted into the dolly from the tail end of the new pipe, which is filled with pressurized water. The dolly is then moved in the direction of the old pipe to insert the new pipe into the old pipe.

REFERENCES:
patent: 4662606 (1987-05-01), Akesaka
patent: 4796673 (1989-01-01), Ueda
patent: 4815695 (1989-03-01), Akesaka
patent: 4830538 (1989-05-01), Ueda
patent: 4830539 (1989-05-01), Akesaka
patent: 4848407 (1989-07-01), Smith et al.
patent: 5190705 (1993-03-01), Corazza

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