| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: when a conventional drain pipe repair auxiliary tool is mounted once to a drain pipe and the outside of the deteriorated drain pipe is fastened and drawn from the floor surface, the deteriorated drain pipe is destroyed by chucking pressure thereof and sufficient drawing action may not be obtained occasionally. <P>SOLUTION: A floor surface portion of a deteriorated drain pipe to be drawn is fixed by an inward opening chuck, thereby preventing the deteriorated drain pipe from being deformed by inward opening pressure. Then, by once installing an auxiliary tool, the drain pipe can be drawn completely. Work saving therefore can be provided and floor surface damage caused by installing a plurality of auxiliary tools can be prevented to a minimum. <P>COPYRIGHT: (C)2013,JPO&INPIT |
