Patents by Inventor Kyu Sung CHOI

Kyu Sung CHOI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250257902
    Abstract: A fluid heating heater according to one embodiment of the present invention may include a main body in which a flow path through which a fluid flows in and is heated is formed, an inlet that is disposed on one side of the main body and through which the fluid flows in, an outlet that is disposed on the other side of the main body and through which the fluid flows out, and a plurality of flow path protrusions that are provided inside the main body to protrude and are isotropically disposed between the inlet and the outlet.
    Type: Application
    Filed: February 7, 2025
    Publication date: August 14, 2025
    Applicant: Hanon Systems
    Inventors: Chi Yong PARK, Min Gyu PARK, Yong Ha CHAE, Kyu Sung CHOI
  • Publication number: 20250207629
    Abstract: The present invention provides an airfoil journal bearing including a bearing housing, a bump foil provided inside the bearing housing, formed in a circumferential direction, and coupled to the bearing housing, and a top foil provided inside the bump foil, formed in the circumferential direction, and having one end, based on the circumferential direction, fixedly coupled to the bearing housing, and the other end configured as a free end, in which the other end, which is the free end of the top foil, is formed to exceed one end in a direction in which the top foil extends based on one end fixed to the bearing housing, such that the other end of the top foil is disposed to overlap one side in the circumferential direction.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 26, 2025
    Inventors: Jong Sung LEE, Hyun Chil KIM, Gunwoong PARK, Min Gyu PARK, Chi Yong PARK, Yeol Woo SUNG, Kyu Sung CHOI
  • Patent number: 12331786
    Abstract: The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: June 17, 2025
    Assignee: HANON SYSTEMS
    Inventors: Yeol Woo Sung, Hyun Chil Kim, Gunwoong Park, Min Gyu Park, Chi Yong Park, Hyun Sup Yang, Jong Sung Lee, Kyu Sung Choi
  • Publication number: 20250154979
    Abstract: The present invention relates to an air foil journal bearing including a bump foil and a top foil, in which one end and the other end of the top foil based on a circumferential direction are disposed with a step difference in a radial direction, and one end of the top foil is disposed radially inward of the other end of the top foil on the assumption that a direction in which the top foil extends from one end to the other end is identical to a rotation direction of a rotor disposed inside the top foil and configured to rotate, such that an additional fluid dynamic pressure is generated in the bearing, and asynchronous vibration components, which affect noise, are suppressed during a high-speed operation, which may improve driving stability.
    Type: Application
    Filed: March 24, 2023
    Publication date: May 15, 2025
    Inventors: Jun Hyuk Park, Chi Yong Park, Jong Sung Lee, Kyu Sung Choi
  • Patent number: 12234830
    Abstract: An air compressor having a housing; a rotating shaft extending in the longitudinal direction inside the housing; a compression unit disposed in front of the rotating shaft and rotated by the rotating shaft to compress and discharge air that flows in; a motor unit which rotates the rotating shaft; a control board which controls the motor unit; a filter unit which supplies external electrical power to the control board and filters the noise of the electrical power; and a bus bar assembly which transfers the electrical power from the control board to the motor unit.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: February 25, 2025
    Assignee: HANON SYSTEMS
    Inventors: Kyu Sung Choi, Hyun Chil Kim, Gun Woong Park, Min Gyu Park, Chi Yong Park, Yeol Woo Sung, Hyun Sup Yang, Jong Sung Lee
  • Publication number: 20250018022
    Abstract: The present invention relates to a novel recombinant porcine circovirus type 2 protein and use thereof and, more specifically, to: a novel recombinant porcine circovirus type 2 protein; and a vaccine composition, an immunogenic composition, and a feed composition, comprising same. It was confirmed that the novel recombinant porcine circovirus type 2 protein according to the present invention showed excellent antibody titers against both PCV2b and type 2d. This means that when the recombinant porcine circovirus type 2 protein of the present invention is used as a vaccine, porcine circovirus-related diseases can be effectively prevented by cross-protecting both PCV2b and PCV2d genotypes, and thus the porcine circovirus type 2 protein of the present invention can be used in various ways in the field of pig farming.
    Type: Application
    Filed: June 14, 2022
    Publication date: January 16, 2025
    Applicant: INNOVAC INC.
    Inventors: Tae Wook HAHN, Ki Ju KIM, Kyu Sung CHOI
  • Publication number: 20240426338
    Abstract: The present invention relates to an air foil thrust bearing including a bump foil and a top foil stacked at a position corresponding to the bump foil to cover the bump foil, in which an outer diameter of the top foil is larger than an outer diameter of the bump foil in a radial direction, and the bump foil and the top foil are formed and disposed so that a portion where pressure of an air film between a thrust runner and the top foil is high when a rotor rotates is consistent with a region in which the bump foil exists, such that friction in an outermost peripheral region of the top foil based on the radial direction is reduced, durability is improved, the pressure of the air is relatively uniformly dispersed, and a load supporting force is improved.
    Type: Application
    Filed: November 4, 2022
    Publication date: December 26, 2024
    Inventors: Gunwoong Park, Hyun Chil Kim, Kyu Sung Choi, Jun Hyuk Park, Yong Ha Chae
  • Publication number: 20240384752
    Abstract: The present invention relates to an air foil journal bearing including a bump foil having a plurality of elastic bumps and provided and coupled inside a bearing housing, a mid-foil provided inside the bump foil, formed in a circumferential direction, and having at least one circumferential end coupled to the bearing housing, and a top foil provided inside the mid-foil, formed in the circumferential direction, and having at least one circumferential end coupled to the bearing housing, in which a stepped portion is formed as a radius of an inner peripheral surface of a partial circumferential region of the mid-foil is smaller than a radius of an inner peripheral surface of the remaining region, such that an additional pressure is generated in a section in which a maximum positive pressure is applied when a rotor rotates at low speed, such that the rotor may float at a relatively low rotational speed, and friction and vibration between the rotor and the top foil may be reduced.
    Type: Application
    Filed: October 17, 2022
    Publication date: November 21, 2024
    Inventors: Jong Sung Lee, Hyun Chil Kim, Gunwoong Park, Min Gyu Park, Chi Yong Park, Yeol Woo Sung, Hyun Seok Jung, Kyu Sung Choi
  • Patent number: 12031549
    Abstract: The present invention relates to an air compressor for a vehicle and, more specifically, to an air compressor for a vehicle wherein the entire operation of the air compressor may be stabilized by a cooling unit in which a portion of the compressed air that moves through a connection pipe conveying primarily compressed air exchanges heat with a cooling water flowing part to cool the driving unit.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: July 9, 2024
    Assignee: Hanon Systems
    Inventors: Hyun Chil Kim, Gunwoong Park, Chi Yong Park, Yeol Woo Sung, Hyun Sup Yang, Jong Sung Lee, Kyu Sung Choi
  • Patent number: 11988228
    Abstract: Air compressor for a vehicle having improved internal cooling efficiency by ensuring a circulation flow of compressed air for internal cooling and allowing the compressed air to sufficiently flow. The air compressor comprises: a housing with a compression unit for introducing and compressing air from outside; a motor unit which includes a rotor and a stator, and drives the compression unit to rotate according to the rotation of the rotor; a bearing unit supporting the rotor to be rotatable; a cooling circulation flow path formed inside the housing for moving, in an axial direction, some of the air compressed in the compression unit and circulating the air to the compression unit; and a bypass flow path which receives some of the air passing through the cooling circulation flow path and bypasses a partial region of the bearing unit to join the cooling circulation flow path.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 21, 2024
    Assignee: Hanon Systems
    Inventors: Gun Woong Park, Chi Yong Park, Jong Sung Lee, Kyu Sung Choi
  • Patent number: 11982283
    Abstract: The present invention relates to a compressor and, more specifically, to an air compressor for a vehicle, which can support a rotor disk and form a cooling flow channel by a first cover and a second cover, and thus can improve cooling efficiency while increasing manufacturability.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: May 14, 2024
    Assignee: Hanon Systems
    Inventors: Chi Yong Park, Hyun Chil Kim, Gunwoong Park, Min Gyu Park, Yeol Woo Sung, Hyun Sup Yang, Jong Sung Lee, Kyu Sung Choi
  • Publication number: 20240125357
    Abstract: The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 18, 2024
    Applicant: Hanon Systems
    Inventors: Yeol Woo SUNG, Hyun Chil KIM, Gunwoong PARK, Min Gyu PARK, Chi Yong PARK, Hyun Sup YANG, Jong Sung LEE, Kyu Sung CHOI
  • Publication number: 20240125334
    Abstract: An air compressor according to an aspect of the present invention comprises: a housing; a rotating shaft which is disposed in the housing; a compression unit which is connected to the rotating shaft to compress and discharge inlet air; a motor unit which drives the rotating shaft; a control board which controls the motor unit; and a filter unit which filters out noise from external power and supplies the external power to the control board, wherein the housing includes a first cooling flow channel for cooling the motor unit and a second cooling flow channel for cooling the filter unit, and the first cooling flow channel communicates with the second cooling flow channel.
    Type: Application
    Filed: March 30, 2022
    Publication date: April 18, 2024
    Inventors: Kyu Sung CHOI, Hyun Chil KIM, Gun Woong PARK, Min Gyu PARK, Chi Yong PARK, Yeol Woo SUNG, Hyun Sup YANG, Jong Sung LEE
  • Publication number: 20240120813
    Abstract: Air compressor in which the arrangement structure between a filter part and a discharge resistor reduces interference between the filter part and the discharge resistor and increases the space utilization of the filter part, making the air compressor more compact. The air compressor comprises a housing with a rotary shaft disposed inside it; a compression part connected to the rotary shaft which compresses and discharges introduced air; a motor part driving the rotary shaft; a control board for controlling the motor part, and the filter part which filters noise of external power and supplies the external power to the control board, wherein the filter part includes a capacitor assembly connected to an external power source, a transistor connected to the control board, a current sensor assembly connected to the transistor, and a discharge resistor connected to the capacitor assembly and discharges the residual charge in the capacitor assembly.
    Type: Application
    Filed: April 11, 2022
    Publication date: April 11, 2024
    Inventors: Kyu Sung CHOI, Gun Woong PARK, Chi Yong PARK, Yeol Woo SUNG, Hyun Sup YANG
  • Publication number: 20240011498
    Abstract: The present invention relates to a compressor and, more specifically, to an air compressor for a vehicle, which can support a rotor disk and form a cooling flow channel by a first cover and a second cover, and thus can improve cooling efficiency while increasing manufacturability.
    Type: Application
    Filed: April 1, 2021
    Publication date: January 11, 2024
    Inventors: Chi Yong PARK, Hyun Chil KIM, Gunwoong PARK, Min Gyu PARK, Yeol Woo SUNG, Hyun Sup YANG, Jong Sung LEE, Kyu Sung CHOI
  • Publication number: 20230327524
    Abstract: The present invention relates to an air compressor which improves the space utilization of a filter unit, and reduces the number of constituent parts constituting the filter unit, thereby improving assemblability, reducing manufacturing costs, and minimizing the size of the air compressor itself. The air compressor comprises: a housing; a rotating shaft extending in the longitudinal direction inside the housing; a compression unit disposed in front of the rotating shaft and rotated by the rotating shaft to compress and discharge air that flows in; a motor unit which rotates the rotating shaft; a control board which controls the motor unit; a filter unit which supplies external electrical power to the control board and filters the noise of the electrical power; and a bus bar assembly which transfers the electrical power from the control board to the motor unit.
    Type: Application
    Filed: September 8, 2021
    Publication date: October 12, 2023
    Inventors: Kyu Sung CHOI, Hyun Chil KIM, Gun Woong PARK, Min Gyu PARK, Chi Yong PARK, Yeol Woo SUNG, Hyun Sup YANG, Jong Sung LEE
  • Publication number: 20230106824
    Abstract: The present invention relates to an air compressor for a vehicle and, more specifically, to an air compressor for a vehicle wherein the entire operation of the air compressor may be stabilized by a cooling unit in which a portion of the compressed air that moves through a connection pipe conveying primarily compressed air exchanges heat with a cooling water flowing part to cool the driving unit.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 6, 2023
    Inventors: Hyun Chil KIM, Gunwoong PARK, Chi Yong PARK, Yeol Woo SUNG, Hyun Sup YANG, Jong Sung LEE, Kyu Sung CHOI
  • Publication number: 20220403854
    Abstract: Air compressor for a vehicle having improved internal cooling efficiency by ensuring a circulation flow of compressed air for internal cooling and allowing the compressed air to sufficiently flow. The air compressor comprises: a housing with a compression unit for introducing and compressing air from outside; a motor unit which includes a rotor and a stator, and drives the compression unit to rotate according to the rotation of the rotor; a bearing unit supporting the rotor to be rotatable; a cooling circulation flow path formed inside the housing for moving, in an axial direction, some of the air compressed in the compression unit and circulating the air to the compression unit; and a bypass flow path which receives some of the air passing through the cooling circulation flow path and bypasses a partial region of the bearing unit to join the cooling circulation flow path.
    Type: Application
    Filed: September 29, 2020
    Publication date: December 22, 2022
    Inventors: Gun Woong PARK, Chi Yong PARK, Jong Sung LEE, Kyu Sung CHOI
  • Patent number: 10962050
    Abstract: A vehicle air compressor including a shaft provided with an impeller disposed at one side thereof and a runner disposed at the other side thereof, a motor configured to rotate the shaft, a trust bearing which supports the shaft in a longitudinal direction of the shaft and of which a surface is disposed adjacent to a surface of the runner, wherein a cooling hole for cooling air between the trust bearing and the runner is disposed in the trust bearing.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: March 30, 2021
    Assignee: Hanon Systems
    Inventors: Jong Sung Lee, Hyun Chil Kim, Gun Woong Park, Chi Yong Park, Hyun Sup Yang, Kyu Sung Choi
  • Publication number: 20200149583
    Abstract: The present invention provides a vehicle air compressor including a shaft provided with an impeller disposed at one side thereof and a runner disposed at the other side thereof, a motor configured to rotate the shaft, a trust bearing which supports the shaft in a longitudinal direction of the shaft and of which a surface is disposed adjacent to a surface of the runner, wherein a cooling hole for cooling air between the trust bearing and the runner is disposed in the trust bearing.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Inventors: Jong Sung LEE, Hyun Chil KIM, Gun Woong PARK, Chi Yong PARK, Hyun Sup YANG, Kyu Sung CHOI