| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a urinal capable of inhibiting urolith from developing in a drain lateral branch pipe while maintaining water saving capacity. <P>SOLUTION: A urinal US includes urinary concentration reduction means for reducing a urinary concentration of drainage water flowing from a trap part TP to a drain lateral branch pipe. A branch water supply pipe 32 functioning as the urinary concentration reduction means reduces the urinary concentration of the drainage water by supplying water into a passage provided between the trap part TP and the drain lateral branch pipe. <P>COPYRIGHT: (C)2012,JPO&INPIT |
