| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-pipe repairer in which such a fact of nonconformity that a thermosetting adhesive lying in and around a border line between a rubber sleeve and a branch pipe sleeve has been scraped off due to friction between a pipe and an inner wall will in no case occur. SOLUTION: A border line 12 to be attached tight after a rubber sleeve 3 and a branch pipe sleeve 11 are superposed on each other is made up into an elliptic form being long in the axial direction of the rubber sleeve 3. Accordingly, since the border line 12 is situated side a recess 3A being formed on upper part of the rubber sleeve 3 in a state that the branch pipe sleeve 11 is contracted, such a problem that both radial symmetrical sizes enlarge can be prevented. Therefore, such nonconformity that a thermosetting adhesive lying in and around this border line 12 is scraped off due to friction between a pipe 7 and an inner wall is thus prevented too. |
