公开(公告)号：US20170155303A1

公开(公告)日：2017-06-01

申请号：US15361257

申请日：2016-11-25

Applicant: FOUNDATION OF SOONGSIL UNIVERSITY INDUSTRY COOPERATION

Inventor： Hyeong Joon AHN

IPC: H02K5/24

Abstract: A rotary motor capable of reducing repulsive force is disclosed. The rotary motor comprises a housing, a stator located in the housing and configured to have a shape of a cylinder on which a central part is penetrated, and a rotator configured to rotate in the stator. Here, the stator rotates clockwise or counterclockwise.

公开(公告)号：US20230265891A1

公开(公告)日：2023-08-24

申请号：US18012862

申请日：2021-04-16

Applicant: FOUNDATION OF SOONGSIL UNIVERSITY-INDUSTRY COOPERATION

Inventor： Hyeong Joon AHN

IPC: F16C41/00 ,  F16C32/04

CPC classification number: F16C41/007 ,  F16C32/0474

Abstract: A magnetic bearing having a colocated eddy-current displacement sensor, comprising an electromagnet unit including a circular casing having a hollow portion therein, and a plurality of electromagnets disposed along an inner periphery of the casing, an amplifier unit coupled to one side of the electromagnet unit, a coil wiring unit coupled to the other side of the electromagnet unit, and a plurality of sensor units disposed along an inner periphery of the electromagnet unit and each having two opposite ends respectively coupled to the coil wiring unit and the amplifier unit, the plurality of sensor units being provided between the coil wiring unit and the amplifier unit, in which the sensor unit is disposed colocatedly with a suspended body supported by the electromagnet unit and configured to measure a displacement of the suspended body.

公开(公告)号：US20220333674A1

公开(公告)日：2022-10-20

申请号：US17639934

申请日：2020-08-24

Applicant: Foundation of Soongsil University-Industry Cooperation

Inventor： Hyeong Joon AHN

IPC: F16H49/00 ,  F16H55/08

Abstract: The present invention relates to a harmonic gear device in which a first similarity curve obtained by similarly transforming a reference curve representing a moving locus of an external tooth with respect to an internal tooth in a non-deflected state and a second similarity curve generated by similarly transforming the first similarity curve are used as a criterion for generating a tooth profile, wherein the present invention may provide the harmonic gear device that enlarges a first curve represented by a moving locus of positive deflection located above the apex of the reference curve among the moving loci of positive deflection of the external teeth on the basis of the reference curve to approximate an approximate reference point arranged on the second similarity curve to create a second curve, and uses the second curve as the top of the tooth profile of the external tooth.

公开(公告)号：US20210398833A1

公开(公告)日：2021-12-23

申请号：US17289477

申请日：2019-04-09

Applicant: FOUNDATION OF SOONGSIL UNIVERSITY-INDUSTRY COOPERATION

Inventor： Hyeong Joon AHN

IPC: H01L21/677 ,  H02K11/215 ,  H02K41/03 ,  H02K49/04 ,  H01L21/67 ,  B65G54/02 ,  F16C32/04 ,  F16C32/06

Abstract: Provided is a contactless vertical transfer device using a linear motor. The contactless vertical transfer device using a linear motor includes: a transfer unit for picking up an article; and a linear motor located on a side portion of the transfer unit to move the transfer unit, wherein the linear motor comprises at least one driving unit that is located on a side portion of the transfer unit and provided with a mover which a coil is wound; and a rail unit that is located apart from the mover by a predetermined distance in a lateral direction and provided with a plurality of magnet portions disposed in a transfer direction of the transfer unit. The transfer unit is moved along the rail unit by a thrust force of the mover and the magnet portion.