| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drain pipe blocking device for a leakage test, allowing the blocking device to be easily inserted even into a narrow insertion port after installation of terminal devices for implementation of an air-filling type leakage test. <P>SOLUTION: A drain pipe blocking device for a leakage test comprises an inner bag 2 which is wholly formed of an expandable and shrinkable hollow cylindrical bag made of elastic material such as rubber, wholly folded flat in a shrunk state, with a closed top end 2a and an air entrance 2i arranged adjacent to a rear end 2b; an outer bag 3 which is wholly formed of an expandable and shrinkable bag made of elastic material such as rubber, with a closed flat top end 3a and a size allowing the inner bag 2 to be accommodated therein in an unbound state for covering the outside of the inner bag, capable of being inserted to a leakage testing spot 7 of a drain pipe 6 along with the inner bag 2; and a flexible pipe 4 having a top end connected to the air entrance 2i of the inner bag 2 and a rear end connectable to a pressurized air supply source 5. <P>COPYRIGHT: (C)2012,JPO&INPIT |
