| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin catch basin which connects between a pipe connected to an upstream side of a catch basin main body and a pipe connected to a downstream side of the same without causing liquid stagnation and in an angularly adjustable manner, and has a relatively large bore. SOLUTION: The synthetic resin catch basin is formed of an upward-facing inspection cylinder connection portion, and flexible pipe joints on upstream and downstream sides thereof. Each flexible pipe joint includes a socket joint having a partially spherical inner surface, a spigot joint having a partially spherical external surface turnably fitted into the partially spherical internal surface of the socket joint, and an annular internal wall member which follows the inside of each of the socket joint and the spigot joint, and is turnable so as to maintain an internal cross section to an almost constant value. Then the spigot joints are integrally formed together with the catch basin main body on an upstream side and a downstream side of the same. COPYRIGHT: (C)2007,JPO&INPIT
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