Process and apparatus for repairing pipes

Details Process and apparatus for repairing pipes Process and apparatus for repairing pipes

2005-09-13

2005-09-13

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

C405S156000, C138S098000, C138S097000

Reexamination Certificate

active

06942426

ABSTRACT:
A two-stage process for repairing pipes at elevated temperatures and at elevated pressure. The process comprises the steps of preparing and displacing a hose assembly within the pipeline needing repair. A pressure medium is then introduced into the hose assembly raising the first temperature to initiate and facilitate the cross-linking reaction, and then raising the temperature to a second temperature range and pressure to cure or harden the resin. Novel manifolds and access tubes which allow the practicing the process safely are also provided.

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patent: 2003/0138298 (2003-07-01), Mercier

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