| 摘要 |
<p>PURPOSE: To facilitate connection of a branch pipe by stopping one end of a large sized ring-shaped rubber band to either one of a protrusion of socket provided in an upper surface in a skirt part of a vinyl chloride-made main pipe, thereafter winding the band while extended, stopping the other end of the band to the other, and press attaching the skirt part to a main pipe peripheral surface temporarily fixed. CONSTITUTION: An inflow port is opened to an inspection cylinder 1, and after a skirt part 11, applying a bonding agent, of a branch pipe 10 is connected to astride the periphery applying a bonding agent, a band part in one end of an elliptic ring- shaped rubber band is stopped to on protrusion 15, to wind around the inspection cylinder 1 while extending the band, and to stop the band part in the other end to the other protrusion 15. Accordingly, the skirt part 11 is always press attached and temporarily fixed by elastic force of the ring-shaped rubber band relating to the inspection cylinder 1. By tightening with elasticity of the rubber band, since not only no deformation is generated in the skirt part 11 and the inspection cylinder 1 but also the ring-shaped rubber band is stopped to the paired protrusions 15, similarly to when tightened by two wires, a uniform pressure is obtained.</p> |
