Method for renovating damaged line walls in the region of the connection of an auxiliary line to a main line

Abstract

The present invention relates to a method for renovating damaged pipe walls in the region of the connection of a secondary pipe to a main pipe, comprising the following steps, in particular in this sequence: a) providing an apparatus comprising a mobile carrier element, wherein a covering element which is variable in terms of outer diameter and an expandable expansion body are arranged on the carrier element; b) moving the carrier element to the region to be renovated, which comprises the main pipe and the secondary pipe; c) expanding the covering element until it lies against the inner wall of the main pipe, wherein the expansion body, before and/or at least intermittently during the expansion thereof, is arranged in a first recess of the covering element; d) expanding the expansion body, such that the expansion body, when expanded, lies against the wall of the secondary pipe such that the covering element and the expansion body together form a shuttering; e) positioning a transport means for a renovation compound on the second recess of the covering element; and f) introducing the curable, viscous renovation compound into the space between the shuttering and the walls of the main and secondary pipes adjacent to the shuttering by means of the transport means from a storage device.

Dependencies are inferred from the claim text.