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公开(公告)号：US20210230935A1
公开(公告)日：2021-07-29
申请号：US17257303
申请日：2020-04-03
Inventor： Dong Sop RHEE , Hyung Jun KIM
Abstract: The present disclosure provides a water-blocking device including a water-blocking plate installed on a floor of a passage, rails installed on both sidewalls of the floor, and a driving part configured to lift and lower the water-blocking plate, wherein, when the driving part is operated, the water-blocking plate is lifted and lowered along the rails.
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