Patent ID: 7635006
Filing Date: 2009-12-22
Classification: F16L

Abstract:
1. A method for sealing of a pipe ( 4 ) that is inaccessible from the outside due to its location inside building elements or, that is in the ground, and in which a fluid coating material is sprayed out of at least one nozzle ( 2 ) moved through the pipe to be sealed, towards the inner wall ( 3 ) of the pipe for covering at least parts of the inner wall of the pipe thereof, and in which the coating material then hardens for forming a part of the wall of the pipe where it has been applied, and wherein the method is for sealing of pipes having one or more substantial holes ( 12 ) though the pipe wall, the method comprising: introducing into the pipe to be sealed, prior to said spraying, at least one unperforated material piece ( after introducing the pipe piece ( after braking the means for holding the unperforated material piece together, using the nozzle (