Drain pipe with a drain pan and a bell siphon and a coaxial set of bell siphon and a drain pan

摘要

The drain structure has a bell trap (1) which is provided with bell portion (5) provided in trap connector port (10). The trap connector port of bell trap is attached with drain pan (30) formed of magnetizable metal material. The bell trap is provided with several permanent magnets (40,50) in projecting edge portion (15). An independent claim is included for method for coaxially aligning bell trap and drain pan.