| 摘要 |
PROBLEM TO BE SOLVED: To provide an inflow cutoff device of drain port hardware capable of preventing the inflow of oil, when the oil flows out to a floor surface by some accident, in the drain port hardware arranged on the floor surface. SOLUTION: A substantially turned-down bowl-shaped cutoff cover body 14 for covering a drain body 2 and a strainer 8 from above, can be held in a close contact state on the drain body 2 via sealing packing 15 by a coating means 16. COPYRIGHT: (C)2005,JPO&NCIPI
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