| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an expansible ring assembly part with a removable driving mechanism capable of reducing total cost. <P>SOLUTION: This expansible ring assembly part for sealing a gasket in an opening part on a wall of a structure includes the driving mechanism having one set of block members having one bolt having one through port provided with screw thread and an end part provided with a screw and opposing screw threads inside the through port, respectively. The block member is meshed with each end part of an expansible ring so as to remove it. One overlapping sleeve is arranged by overlapping on the end part of the expansible ring. The end part of the expansible ring and the overlapping sleeve include a cooperating ratchet structure part. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
