Process and apparatus for in situ rehabilitation of pipelines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 14, 1992
Grant Date -
N/A
app pub date -
Jul 13, 1990
filing date -
Jul 13, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Underground pipelines that carry wastewater water, natural gas and industrial fluids deteriorate with age. Shown is a process and apparatus for installing a thermoplastic liner in such existing pipelines to accomplish in situ rehabilitation. It involves extruding a tube of thermoplastic liner material within the interior of a pipeline in situ, said tube having an outside diameter smaller than the inside diameter of said pipeline. The tube is next expanded so that the outside diameter of said tube is essentially equal to the inside diameter of said pipeline. The expanded tube is then cooled and hardened in a liner configuration.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully