METHOD AND DEVICE FOR SEALING BRANCH PART OF LINING PIPE

• Main Authors: MORI YOJI, KATO KATSUTOSHI, NAKAO TOMOYOSHI
• Format: Patent
• Language: English
• Published: 31.08.1993
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

PURPOSE:To provide a means for sealing an unbonded part which exists between a fluid conduit and a plastic pipe lined on its inside face and is exposed at a branch part. CONSTITUTION:A male thread tube part 3b for clamping having a diameter smaller than the outer diameter of a male thread part 3a for connection is formed beforehand on more tip side of a branch joint 3 beyond the thread part 3a. A through hole 2a where the male thread tube part 3b for clamping can be passed through is perforated on a plastic pipe 2 lined thereon. A ring type female thread body 4, foldably and developably formed so as to pass through the through hole 2a in its folded state and so as to be screw-attached to the male thread tube part 3b for clamping in its opened state, is set in the plastic pipe 2 through the through hole 2a. The ring type female thread body 4 in an opening state is screw-attached and clamped to the male thread tube part 3b for clamping, after the male thread tube part 3b for clamping is passed through the through hole 2a, for inserting into the plastic pipe 2 while intervening appropriately a seal ring 5.