Method for Renewal or Rehabilitation of Water Supply Pipelines and Plug Arrangement for use in Said Method
AssigneeOliner System LLC
InventorRolf Ivar Dalby
Life of this patent
Estimating the term…
Abstract
Method for renewal or rehabilitation of water supply pipelines without the need for excavation of the pipes or associated side inlets, manholes, etc., wherein plug arrangements are installed in side inlets, a flexible hose applied with adhesive is threaded into the water supply pipeline, and certain pressure is maintained for a predetermined period of time in order to get the adhesive material hardened and the hose glued to the inner pipe wall, and wherein the mounted plug arrangements are removed. A special plug arrangement for use in said method is also provided.
Claims14
Method for renewal or rehabilitation of water supply pipelines, or a predetermined section or length thereof that is to be rehabilitated, comprising:
- mounting or installing a plug arrangement from inside a water supply pipe or pipeline to cover each of a number of tapping points or side inlets of said pipe or pipeline or a predetermined section or length thereof that is to be rehabilitated,
- putting or drawing a flexible hose or tubing saturated or applied with adhesive into said pipeline or pipe length,
- applying and maintaining pressure for a predetermined period of time, wherein the applied pressure is high enough to be able to keep the flexible hose or tubing pressed or forced towards an inner wall of said pipeline or pipe length, and wherein the predetermined period of time is long enough so that the adhesive material gets hardened and the hose gets firmly glued onto the inner pipe wall, and
- detecting and removing each mounted plug arrangement from inside said pipeline or pipe length.
Plug arrangement for use in a method for renewal or rehabilitation of water supply pipelines, or a predetermined section or length thereof that is to be rehabilitated, wherein the plug arrangement comprises an optional plugging portion adapted to be inserted into a tapping point or side inlet and a covering or collar-shaped portion having a predetermined suitable shape with a peripheral area or surface adapted to cover, around the tapping point, a certain or predetermined area of an inner wall of a pipeline.
Dependencies are inferred from the claim text.