| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a repair sleeve of existing useful drainage pipe when an existing drainage pipe is repaired by making use of a part of existing pipes as it is as a unit pipe. <P>SOLUTION: The repair sleeve has a main section 51, a guide part 52 formed on the upper end of the main section 51, a straight part 53 continuously formed to the guide part 52, and a collar 54 continuously formed to the upper end of the straight part 53. The main pipe section 51 has a little smaller outer diameter than the inner diameter of the unit pipe 11, and the straight part 53 has a same outer diameter with the inner diameter of the unit pipe 11. The protruded part from the unit pipe 11 of the main section 51 forms an insertion part 51 to a rising pipe 60. The underface of the collar 54 functions as a seal face 56 to a packing. The collar 54, the straight part 53, and the guide part 52 are formed by machining the end of a strainless steel pipe. <P>COPYRIGHT: (C)2003,JPO</p> |
