公开(公告)号：US20210017004A1

公开(公告)日：2021-01-21

申请号：US17041571

申请日：2019-02-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongryol JANG ,  Kangsuk LEE ,  Jeongdoo JANG

IPC: B66D1/30 ,  B66D1/12

Abstract: 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.

公开(公告)号：US20210039222A1

公开(公告)日：2021-02-11

申请号：US16980333

申请日：2019-01-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongryol JANG ,  Jeongdoo JANG ,  Wonho CHO

IPC: B24B27/06

Abstract: Disclosed is a punching assistant device. The punching assistant device includes: a first shaft arranged perpendicular to a working surface; a second shaft perpendicularly coupled to the first shaft; and a grinder mounting member coupled to the second shaft, wherein the grinder mounting member is rotatable around the first shaft.