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公开(公告)号：US11613450B2
公开(公告)日：2023-03-28
申请号：US17041571
申请日：2019-02-11
发明人： Dongryol Jang , Kangsuk Lee , Jeongdoo Jang
摘要： A lifter is disclosed. The disclosed lifter comprises: a frame; a motor part coupled to the frame; a drum rotatably coupled to the motor part and including a plurality of winding parts formed at regular intervals along the rotary shaft direction; and a plurality of wires coupled to be wound on the plurality of winding parts, respectively. Ends of the plurality of wires at one side thereof may be connected to the plurality of winding parts, respectively, and other ends of the plurality of wires may be detachably fixed to a ceiling.
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