| 摘要 |
PURPOSE:To make it possible to easily block even the deep part of a meandering piping by firmly attaching a balloon to the tip of a hose through a bellows party and providing a backup member made of a rubber elastic body so as to cover the outside of the balloon. CONSTITUTION:In a pipeline blocking device A, a hose 1 consists of a synthetic resin tube 2 and a spiral tube 3. On the outer periphery of the tip of the tube 2, a thin rubber balloon 4 is airtightly bound with adhesive. A rubber backup member 6 is fixed on the tip of the spiral tube 3, and a bell-shaped head member 9 having an opening in its tip is provided in succession to a root member 7. |
