| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a load on a worker engaged in closing work of a through opening formed in a wall of a building or the like, and surely close the through opening in a stable state for a long period. <P>SOLUTION: A closing tool includes: a tubular member 101 opened at both ends and allowing flowing of a gas between the opening 101a on one end side and the opening 101b on the other end side; a fall-off prevention member 102 provided at the one end of the tubular member 101 and having a bag shape expandable and contractible with entrance and exit of the gas through the tubular member 101; and a sealing member 103 installable to the other end of the tubular member 101, blocking off entrance and exit of the gas through the tubular member 101 in a state of being installed to the tubular member 101, and larger in the dimension in the diameter direction of the tubular member 101 than the opening diameter of an opening targeted for closing. <P>COPYRIGHT: (C)2012,JPO&INPIT |
