Patents by Inventor Wan-Sung Pae

Wan-Sung Pae 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).

  • Patent number: 11035373
    Abstract: Provided is a water pump including a supporting structure for an impeller having a lower manufacturing cost and having reduced noise and vibration characteristics compared to a conventional water pump including a supporting structure for an impeller. The water pump including a supporting structure for an impeller includes: a shaft; an impeller having the shaft inserted into a center of the impeller and rotating together with the shaft to discharge an introduced fluid; a core formed on an outer circumference of the shaft; a magnetic material formed on an outer circumference of the core and forming a magnetic field rotating the shaft connected to the core and the impeller; a pump housing the shaft, impeller and core; and a supporting member installed between an end of the shaft and the pump housing to support the shaft.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: June 15, 2021
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Joon Seup Kim
  • Patent number: 10995759
    Abstract: Provided is a water pump including a lower casing, an upper casing coupled to an upper side of the lower casing to form an impeller accommodating space therein by the coupling with the lower casing and having an inlet communicating with the impeller accommodating space and allowing a fluid to be introduced therethrough and an outlet allowing the fluid to be discharged therethrough, an impeller provided in the impeller accommodating space and including an upper plate and a lower plate arranged to be spaced apart from each other vertically and a plurality of blades arranged and coupled between the upper plate and the lower plate, and a rotor coupled to the impeller and rotated together with the impeller, wherein the upper casing has a spacing recess provided on an inner surface corresponding to an outer circumference of the upper plate of the impeller.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 4, 2021
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Byeung Jin Kim
  • Publication number: 20210083558
    Abstract: Provided are a motor integrated with a control unit, in which a motor unit and the control unit are efficiently cooled by allowing heat generated from the motor unit to be radiated from the motor unit, and heat generated from the control unit including a control board to be radiated from the control unit, respectively, and a water pump having the same.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 18, 2021
    Inventors: Wan Sung PAE, Dong Heon MO, Joon Seup KIM
  • Publication number: 20200300264
    Abstract: Provided is a water pump including a lower casing, an upper casing coupled to an upper side of the lower casing to form an impeller accommodating space therein by the coupling with the lower casing and having an inlet communicating with the impeller accommodating space and allowing a fluid to be introduced therethrough and an outlet allowing the fluid to be discharged therethrough, an impeller provided in the impeller accommodating space and including an upper plate and a lower plate arranged to be spaced apart from each other vertically and a plurality of blades arranged and coupled between the upper plate and the lower plate, and a rotor coupled to the impeller and rotated together with the impeller, wherein the upper casing has a spacing recess provided on an inner surface corresponding to an outer circumference of the upper plate of the impeller.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 24, 2020
    Inventors: Wan Sung PAE, Hyun Tae LEE, Byeung Jin KIM
  • Publication number: 20200116151
    Abstract: The present invention relates to an impeller for an electric water pump capable of preventing a cavitation from occurring in the impeller according to the related art and improving a flow restriction in the impeller by changing an internal structure of the impeller in consideration of a flow of a coolant introduced into the impeller. The impeller for an electric water pump, includes: an inlet member formed in a pipe shape extending to allow a fluid to be introduced; an upper member connected to one end of the inlet member, extending to one side, and having an inner diameter increasing toward the one side; an extension member outwardly extending from one end of the upper member; and a lower impeller member coupled to an upper impeller member formed by the inlet member, the upper member, and the extension member to form a discharge space from which the fluid is discharged.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 16, 2020
    Inventors: Wan Sung PAE, Byeung Jin KIM, Joon Seup KIM
  • Publication number: 20200032808
    Abstract: Provided is a water pump including a supporting structure for an impeller having a lower manufacturing cost and having reduced noise and vibration characteristics compared to a conventional water pump including a supporting structure for an impeller. The water pump including a supporting structure for an impeller includes: a shaft; an impeller having the shaft inserted into a center of the impeller and rotating together with the shaft to discharge an introduced fluid; a core formed on an outer circumference of the shaft; a magnetic material formed on an outer circumference of the core and forming a magnetic field rotating the shaft connected to the core and the impeller; a pump housing the shaft, impeller and core; and a supporting member installed between an end of the shaft and the pump housing to support the shaft.
    Type: Application
    Filed: July 26, 2019
    Publication date: January 30, 2020
    Inventors: Wan Sung PAE, Hyun Tae LEE, Joon Seup KIM
  • Patent number: 10498187
    Abstract: Provided is a brushless direct current (BLDC) motor applied to a fuel pump for a motor vehicle, and more particularly, a BLDC motor of a fuel pump for a motor vehicle in which an end of a shaft of a rotor is coupled to a stator side to be rotated such that a length of the shaft is reduced.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 3, 2019
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Jin Woo Han
  • Publication number: 20190017510
    Abstract: The present disclosure relates to an electric water pump and a method of manufacturing the same, and more particularly, to an electric water pump of which productivity, maintainability, and use convenience may be improved by simplifying a production process through a change in a structure, and a method of manufacturing the same. The electric water pump includes: a pump housing accepting a motor therein; an acceptor having a cylindrical shape of which one side is opened and formed at one side of the pump housing; a control substrate installed in the acceptor; an external terminal formed of a conductor and penetrating through the acceptor to electrically connect the control substrate to an external power supply; and an internal terminal formed of a conductor and penetrating through the pump housing and the acceptor to electrically connect the motor and the control substrate to each other.
    Type: Application
    Filed: July 11, 2018
    Publication date: January 17, 2019
    Inventors: Young Sub JANG, Joon Seop KIM, Wan Sung PAE
  • Patent number: 10020696
    Abstract: Provided is a DC motor for a fuel pump for a vehicle. The DC motor for a fuel pump for a vehicle includes: a housing whose inside is hollow; a stator coupled to the inside of the housing and having a first permanent magnet whose N pole is disposed inwardly in a radial direction and a second permanent magnet whose S pole is disposed inwardly in a radial direction, the first permanent magnet and the second permanent magnet being spaced apart from each other to face each other; and a rotor disposed on an inside of the stator while being spaced apart from the stator, in which a first gap g1 between the first permanent magnet and the rotor is different from a second gap g2 between the second permanent magnet and the rotor, whereby a torque ripple that is a fluctuation width of a cogging torque is reduced.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: July 10, 2018
    Assignee: COAVIS
    Inventors: Gyu Sang Yu, Hyun Tae Lee, Wan Sung Pae
  • Publication number: 20180102680
    Abstract: Provided is a DC motor for a fuel pump for a vehicle. The DC motor for a fuel pump for a vehicle includes: a housing whose inside is hollow; a stator coupled to the inside of the housing and having a first permanent magnet whose N pole is disposed inwardly in a radial direction and a second permanent magnet whose S pole is disposed inwardly in a radial direction, the first permanent magnet and the second permanent magnet being spaced apart from each other to face each other; and a rotor disposed on an inside of the stator while being spaced apart from the stator, in which a first gap g1 between the first permanent magnet and the rotor is different from a second gap g2 between the second permanent magnet and the rotor, whereby a torque ripple that is a fluctuation width of a cogging torque is reduced.
    Type: Application
    Filed: June 7, 2017
    Publication date: April 12, 2018
    Inventors: Gyu Sang YU, Hyun Tae LEE, Wan Sung PAE
  • Publication number: 20170201143
    Abstract: Provided is a brushless direct current (BLDC) motor applied to a fuel pump for a motor vehicle, and more particularly, a BLDC motor of a fuel pump for a motor vehicle in which an end of a shaft of a rotor is coupled to a stator side to be rotated such that a length of the shaft is reduced.
    Type: Application
    Filed: January 6, 2017
    Publication date: July 13, 2017
    Inventors: Wan Sung PAE, Hyun Tae LEE, Jin Woo HAN
  • Patent number: 9576715
    Abstract: Provided is a device for magnetizing a ring-shaped magnet for a brushless direct current (BLDC) motor, including: a rotor having a ring-shaped magnet installed on an outer peripheral surface of a rotor core; and a plurality of magnetizing yokes disposed so as to be spaced apart from each other by a predetermined interval while facing an outer peripheral surface of the ring-shaped magnet, magnetizing the ring-shaped magnet to form even-numbered unit magnets, and magnetizing the ring-shaped magnet only in regions except for one end and the other end of the unit magnets.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: February 21, 2017
    Assignee: COAVIS
    Inventors: Seong Hwan Moon, Wan Sung Pae, In Seok Sohn
  • Publication number: 20150380146
    Abstract: Provided is a device for magnetizing a ring-shaped magnet for a brushless direct current (BLDC) motor, including: a rotor having a ring-shaped magnet installed on an outer peripheral surface of a rotor core; and a plurality of magnetizing yokes disposed so as to be spaced apart from each other by a predetermined interval while facing an outer peripheral surface of the ring-shaped magnet, magnetizing the ring-shaped magnet to form even-numbered unit magnets, and magnetizing the ring-shaped magnet only in regions except for one end and the other end of the unit magnets.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 31, 2015
    Inventors: Seong Hwan Moon, Wan Sung Pae, In Seok Sohn
  • Patent number: 8672651
    Abstract: Provided is a fuel pump module used for a car, and more particularly, to a fuel pump module with a driver equipped inside a fuel tank capable of solving a problem of space limitation due to the installation of the driver by disposing the driver for controlling a BLDC fuel pump between a flange and a reservoir and mounting it in the fuel tank, minimizing the degradation in performance of the BLDC fuel pump caused by voltage drop and efficiency degradation due to a wire by reducing a length of a wire for electrically connecting the driver with the BLDC fuel pump, and achieving a sufficient heat radiation effect by directly transferring the heat energy generated from electrical devices such as FET, MCU, or the like, mounted in the driver to the fuel in the fuel tank through the case cover.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: March 18, 2014
    Assignee: Coavis
    Inventors: Wan-Sung Pae, Hyung-Min Kim, Kyeong-Hwan Kim, Inseok Sohn
  • Patent number: 8561595
    Abstract: Provided is a driver-integrated type BLDC fuel pump module, which is used in a vehicle and in which a driver used for controlling the operation of a BLDC fuel pump is installed in a flange of the BLDC fuel pump module, thus removing the spatial limit caused when the driver is installed and reducing the length of an electric wire electrically connecting the driver to a BLDC fuel pump of the module, thereby solving the problem of the operational performance of the BLDC fuel pump deteriorating as a result of both the voltage drop in the electric wire and a reduction in the operational efficiency of the pump.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: October 22, 2013
    Assignee: Coavis
    Inventors: Se Dong Baek, Kyoung Hwan Kim, Wan Sung Pae
  • Publication number: 20120000556
    Abstract: Provided is a driver-integrated type BLDC fuel pump module, which is used in a vehicle and in which a driver used for controlling the operation of a BLDC fuel pump is installed in a flange of the BLDC fuel pump module, thus removing the spatial limit caused when the driver is installed and reducing the length of an electric wire electrically connecting the driver to a BLDC fuel pump of the module, thereby solving the problem of the operational performance of the BLDC fuel pump deteriorating as a result of both the voltage drop in the electric wire and a reduction in the operational efficiency of the pump.
    Type: Application
    Filed: December 14, 2010
    Publication date: January 5, 2012
    Applicant: COAVIS
    Inventors: Se Dong Baek, Kyoung Hwan Kim, Wan Sung Pae
  • Publication number: 20110206543
    Abstract: Provided is a fuel pump module used for a car, and more particularly, to a fuel pump module with a driver equipped inside a fuel tank capable of solving a problem of space limitation due to the installation of the driver by disposing the driver for controlling a BLDC fuel pump between a flange and a reservoir and mounting it in the fuel tank, minimizing the degradation in performance of the BLDC fuel pump caused by voltage drop and efficiency degradation due to a wire by reducing a length of a wire for electrically connecting the driver with the BLDC fuel pump, and achieving a sufficient heat radiation effect by directly transferring the heat energy generated from electrical devices such as FET, MCU, or the like, mounted in the driver to the fuel in the fuel tank through the case cover.
    Type: Application
    Filed: February 16, 2011
    Publication date: August 25, 2011
    Applicant: COAVIS
    Inventors: Wan-Sung Pae, Hyung-Min Kim, Kyeong-Hwan Kim, Inseok Sohn