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US 4,454,173 AGranted
Method for lining pipes in a pipeline
AssigneeHakko Corporation
InventorMotoyuki Koga
Life of this patent
Estimating the term…
Abstract
A method for lining pipes in a pipeline. The method is characterized in that the air in the pipeline is sucked from an outlet by a vacuum pump together with plastics mist, and additional air is supplied from an inlet of the pipeline at a low pressure, so that the pipeline is lined with the plastics. The residual plastics mist is recovered into a tank at the outlet end of the pipeline.
Claims7
A method for lining pipes in a pipeline comprising:
- connecting an end opening of the pipeline to a vacuum generator;
- supplying plastics mist to the other end opening of the pipeline;
- sucking the air in the pipeline by said vacuum generator together with the plastics mist;
- and
- recovering the residual plastics mist at the outlet end of the pipeline.
2 more elements
Dependencies are inferred from the claim text.