Method of and apparatus for repairing and sealing junctions between mains and branch pipes

US5609439A · kind A · utility

Assignee

• KMG Kanal-Muller-Gruppe International GmbH & Co. KG · DE

Inventors

• Herbert Schreiner · Steinheim, DE
• Hermann Suerbaum · Steinheim, DE

Key dates

• Filing date: Mar 27, 1995
• Grant date: Mar 11, 1997
• Expiry date: Mar 27, 2015

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E03F2003/065
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A faulty junction between a main pipe and an entering branch pipe is repaired and sealed by using a bladder which is carried between two bearing blocks. The bladder is prepared with a resin impregnated mat, which, when the bladder is pulled and turned into a position center to a pipe junction lines and seals the pipe junction upon application of a pressure medium to the bladder. Positioning of the bladder is performed under TV remote-control.