The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2000
Filed:
Sep. 11, 1998
Abstract
The invention relates to a method and an apparatus for lining a pipe through a sealing internal lining by using a flexible tube including adhesive, which is introduced into said pipe in turning inside out manner and is kept dimensionally stable until the adhesive is cured. To reduce the frictional force during the introducing operation a strip additive is deposited onto the outside of the flexible tube prior to the turning up operation. A strip additive having a gel-like consistence is used to minimize the frictional force. For a uniformly wetting the flexible tube with the strip additive, this is transferred into a liquid condition by heating prior to depositing. After depositing, it quickly cools down to the ambient temperature such that the required gel-like consistence is ensured for the introducing operation. Thereby it is possible to line pipes or ducts comprising several pipe bends an angles within the line course.