| 摘要 |
PROBLEM TO BE SOLVED: To provide a catch basin which enables the smooth flow of discharge water even if a thick drain pipe is connected to the catch basin. SOLUTION: This catch basin 1 comprises upstream-side and downstream-side connection ports 11 and 12. In the catch basin 1, socket portions 11b and 12b, which have inner cylinders larger in diameter than those of connection port bodies 11a and 12a, are formed at the ends of the end connection ports 11 and 12, respectively; and the inner cylinder of the socket portion 12b of the downstream-side connection port 12 is formed in such a shape as to be eccentric downward with respect to that of the connection port body 12a. COPYRIGHT: (C)2008,JPO&INPIT
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