PURPOSE: To easily mount and demount a drain trap, etc., which are used in a shape that they are installed to a drain hole on a floor surface, for maintenance, inspection, etc.
CONSTITUTION: With a drain trap 1, an upper surface is provided with a water receiving port 2 while being equipped with a connecting collar 3 around the water receiving port 2, and a drain hole 4 is shaped to the flank. A flexible pipe 5, which can be expanded, is connected to the drain hole 4 in a form that it can be mounted and demounted, the connecting collar 3 is placed on a fringe of the drain hole 4 and fixed, and the drain hole 4 of the drain trap 1 and a drain pipe 7 are connected by utilizing the flexible pipe 5, which can be expanded. Such an arrangement can mount and demount the pipe 7 to and from an upper portion of the drain hole 4 on a floor surface.
TAKEZOE KAZUYA
SHIMANOE SHIGEYOSHI
