Patents Assigned to CK MATERIALS LAB CO., LTD.
  • Publication number: 20250044885
    Abstract: The present invention relates to a method of evaluating a magneto-rheological rotating load device. In a method of evaluating a structural defect of a magneto-rheological rotating load device according to the present invention, the magneto-rheological rotating load device includes a housing, a shaft rotatably installed in the housing, one or more rotary rings connected to the shaft and configured to rotate in conjunction with a rotation of the shaft, a coil part disposed in the housing, and a magneto-rheological fluid with which at least a part in the housing is filled, and the method includes measuring whether a torque value, which is applied when the shaft and the rotary ring rotate, decreases from an initial set value within a predetermined range.
    Type: Application
    Filed: October 18, 2024
    Publication date: February 6, 2025
    Applicant: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun KIM, Jeen Gi KIM, Min Jae KANG, Dong Wook KIM
  • Publication number: 20240419203
    Abstract: Provided is a magnetorheological rotating load apparatus and a control method therefor, the magnetorheological rotating load apparatus including a housing, a yoke fixed in the housing, a shaft mounted to rotate in the housing, at least one rotating ring connected to the shaft to rotate in conjunction with the rotation of the shaft, a coil disposed in the housing, and a magnetorheological fluid filled in at least a portion of the housing, wherein at least a portion of the shaft positioned inside the housing is made of a non-magnetic material.
    Type: Application
    Filed: August 30, 2024
    Publication date: December 19, 2024
    Applicant: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun KIM, Jeen Gi KIM, In Sik JEE
  • Publication number: 20240418618
    Abstract: The present invention relates to a method for evaluating the characteristics of a magnetorheological fluid. The method for evaluating the characteristics of magnetorheological fluid, according to the present invention, is for evaluating the characteristics of magnetorheological fluid comprising a dispersion medium and magnetic particles and is characterized by comprising the following steps: (a) preparing a container in which a magnetorheological fluid is filled or a flow channel in which a magnetorheological fluid flows; (b) placing a coil part such that the container or flow channel is positioned in the hollow portion of the coil part; and (c) using the coil to measure an impedance signal or inductance signal with respect to the magnetorheological fluid.
    Type: Application
    Filed: August 26, 2024
    Publication date: December 19, 2024
    Applicant: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun KIM, Seong Jun SHIN, Jeong Hoon KIM, Seung Hyun SON
  • Patent number: 12147619
    Abstract: The present invention relates to a method of evaluating a magneto-rheological rotating load device. In a method of evaluating a structural defect of a magneto-rheological rotating load device according to the present invention, the magneto-rheological rotating load device includes a housing, a shaft rotatably installed in the housing, one or more rotary rings connected to the shaft and configured to rotate in conjunction with a rotation of the shaft, a coil part disposed in the housing, and a magneto-rheological fluid with which at least a part in the housing is filled, and the method includes measuring whether a torque value, which is applied when the shaft and the rotary ring rotate, decreases from an initial set value within a predetermined range.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: November 19, 2024
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jeen Gi Kim, Min Jae Kang, Dong Wook Kim
  • Publication number: 20240338083
    Abstract: The present invention relates to a tactile keyboard and a tactile input device. The tactile keyboard according to the present invention, which includes a plurality of keys, comprises a base portion providing a region on which the plurality of keys are arranged, wherein at least one of the keys comprises: a magnetic field generator which is arranged on the base portion; a cap portion which provides one surface so that a user comes in contact with the surface to apply an external force; an elastic portion which is disposed between the base portion and the cap portion and elastically supports the cap portion; and a motion portion which is at least partially connected to the cap portion and includes an elastic material, in which magnetic particles are distributed in a matrix.
    Type: Application
    Filed: June 20, 2024
    Publication date: October 10, 2024
    Applicant: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun KIM, Jeen Gi KIM, In Sik JEE
  • Patent number: 12080155
    Abstract: Provided is a haptic device including a medium for receiving a digital sound signal from a portable terminal, a digital-to-analog converter (DAC) for receiving the digital sound signal from the medium and converting the digital sound signal into an analog signal, a sound outputter for receiving the analog signal and outputting sound, and a haptic actuator driven by receiving the analog signal.
    Type: Grant
    Filed: June 7, 2023
    Date of Patent: September 3, 2024
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, In Sik Jee
  • Patent number: 12073709
    Abstract: A method of providing a mobile device with information of an incoming message using a tactile signal is provided. The method includes receiving the incoming message at the mobile device, determining at least one type of the tactile signal for the information of the incoming message based on a selected setting, transforming the information of the incoming message into the at least one type of the tactile signal, activating the at least one type of the tactile signal, and providing the mobile device with the information of the incoming message using the activated at least one type of the tactile signal.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: August 27, 2024
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Seoung Hun Do, Hyeong Jun Kim
  • Patent number: 12032821
    Abstract: The present invention relates to a tactile message providing method and a tactile message providing device. The tactile message providing method in a mobile device includes driving a tactile message program in a first mobile device, receiving a tactile pattern in the first mobile device, converting the tactile pattern into a tactile signal, and transmitting the tactile signal to a second mobile device. The tactile message program includes a tactile switch icon, and the tactile switch icon switches a text input window to a tactile pattern input window and the tactile pattern input window receives the tactile pattern to generate a digital signal.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: July 9, 2024
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, Nam Seok Kim, Jeong Bum Lee
  • Patent number: 12003196
    Abstract: A button type actuator according to one embodiment may comprise: a case; a button part having at least a part which is moved with respect to the case by a user's pressure; a vibrator connected to the button part and including a magnetic body; and a coil for generating a magnetic field on the vibrator.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: June 4, 2024
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, Ki Suk Son
  • Patent number: 11914779
    Abstract: An apparatus and method for generating and reproducing pattern data is provided. The apparatus for generating pattern data includes an input data reception unit for receiving input data according to a user selection; a controller for determining pattern information on the basis of the input data and generating pattern data including the determined pattern information, and a communication unit for transmitting the generated pattern data to the apparatus for reproducing pattern data.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: February 27, 2024
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee
  • Patent number: 11847262
    Abstract: An apparatus and a method for providing a haptic control signal of a haptic device are disclosed. The apparatus for providing a haptic control signal of a haptic device comprises: a haptic pattern data determination unit for determining haptic pattern data on the basis of at least one of an audio signal and an additional effect signal; a haptic control signal generation unit for generating a haptic control signal for controlling a vibration operation of the haptic device on the basis of the haptic pattern data; and a transmission unit for transmitting the haptic control signal to the haptic device.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: December 19, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Ki Suk Son, Jong Hun Lee
  • Patent number: 11798441
    Abstract: The purpose of the present invention is to provide a magnetic fluid display in which a magnetic fluid moves in response to a magnetic field and which may display a unique visual image according to the meeting and parting of the magnetic fluid. A magnetic fluid display according to the present invention comprises: a display unit including a transparent liquid into which a magnetic fluid is injected; and a magnetic field generating unit for applying a magnetic field to the magnetic fluid at a rear surface of the display unit. When the magnetic field is applied, the magnetic fluid moves in the transparent liquid in a directional manner, so that an image may be displayed on the display unit.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: October 24, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, Min Kyu Choi
  • Patent number: 11760375
    Abstract: The present invention relates to a haptic information provision device. The haptic information provision device (100) according to the present invention comprises: a receiver (120) for receiving external notification information; a controller (130) for converting the notification information to a haptic signal; and an operation unit (110) for transferring haptic information to a user according to the haptic signal, wherein the operation unit (110) includes a plurality of operation units (110a-110j), the respective operation units (110a-110j) operating in response to different notification information and thus transferring different haptic information to the user.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: September 19, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Seoung Hun Do, Hyeong Jun Kim
  • Patent number: 11741799
    Abstract: A curved haptic actuator according to an embodiment may comprise: a housing having a receiving space and having a shape where the receiving space and an outer appearance thereof are bent outward; a vibration unit disposed in the receiving space, being movable along the longitudinal direction of the housing, and having a shape bent upward; elastic bodies connected to an inner wall of the housing and both sides of the vibration unit; and a magnetic field generation unit which is installed on the inner wall of the housing and generates a magnetic field and applies the magnetic field to the vibration unit.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: August 29, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Myung Sun Park, Jong Hun Lee, Cheol Hee Lee
  • Patent number: 11714490
    Abstract: A radial magnet actuator includes a housing having an inner space, a moving body including a mass body provided to relatively move in the inner space, and a hollow radial magnet provided in the mass body, an elastic member configured to elastically support the moving body from one side of the inner space, and a hollow coil part provided at an upper side of the inner space, with at least a portion inserted into the hollow of the radial magnet, wherein the radial magnet is magnetized in a radial direction.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: August 1, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, Jong Ki Lee, Ihn Beom Lee
  • Patent number: 11710389
    Abstract: Provided is a haptic device including a medium for receiving a digital sound signal from a portable terminal, a digital-to-analog converter (DAC) for receiving the digital sound signal from the medium and converting the digital sound signal into an analog signal, a sound outputter for receiving the analog signal and outputting sound, and a haptic actuator driven by receiving the analog signal.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 25, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, In Sik Jee
  • Patent number: 11662823
    Abstract: A haptic device according to one embodiment can comprise: a database unit for storing acoustic information or receiving the acoustic information from an external device; a control unit for converting the acoustic information into an electrical signal according to a predetermined pattern; a driving unit for generating a motion signal on the basis of the electrical signal; and a transfer unit for transferring a patterned tactile signal to a user by means of the motion signal.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: May 30, 2023
    Assignee: CK MATERIAL LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Ji Goo Kang, Jong Hun Lee, Jeong Beom Lee, Jong Hyung Jung
  • Patent number: 11623244
    Abstract: According to one embodiment, a tactile actuator can comprise: a housing having an accommodation space therein; a cap covering at least a portion of the accommodation space; a vibration unit disposed inside the accommodation space; an elastic member for connecting the housing and the vibration unit such that the vibration unit can vibrate with respect to the housing; a coil for forming a magnetic field to drive the vibration unit; and a control unit for determining any one driving mode on the basis of collected driving information from among a plurality of preset driving modes and determining, according to the driving mode, the characteristic of a current to be applied to the coil.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: April 11, 2023
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, Jeong Bum Lee, Ji Goo Kang, Jong Hyung Jung
  • Patent number: 11514826
    Abstract: The purpose of the present invention is to provide a magnetic fluid display in which a magnetic fluid moves in response to a magnetic field and which may display a unique visual image according to the meeting and parting of the magnetic fluid. A magnetic fluid display according to the present invention comprises: a display unit including a transparent liquid into which a magnetic fluid is injected; and a magnetic field generating unit for applying a magnetic field to the magnetic fluid at a rear surface of the display unit. When the magnetic field is applied, the magnetic fluid moves in the transparent liquid in a directional manner, so that an image may be displayed on the display unit.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: November 29, 2022
    Assignee: CK Materials LAB Co., Ltd.
    Inventors: Hyeong Jun Kim, Jong Hun Lee, Min Kyu Choi
  • Patent number: 11504743
    Abstract: A flexible tactile actuator includes a tactile transmitter configured to be flexible and including magnetic particles capable of being polarized in response to an external magnetic field and a matrix layer including the magnetic particles, a magnetic field generator disposed below the tactile transmitter and configured to generate a magnetic field in the tactile transmitter, and an elastic member provided in a shape of a film, having at least a portion in surface contact with the magnetic field generator, and attached to be in surface contact with one of a top surface and a bottom surface of the tactile transmitter.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: November 22, 2022
    Assignee: CK MATERIALS LAB CO., LTD.
    Inventors: Hyeong Jun Kim, Myung Sun Park, Jong Hun Lee, Ji Goo Kang, Nam Seok Kim