Patents by Inventor Do-Hoi Koo

Do-Hoi Koo 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: 9327770
    Abstract: A center pillar reinforcement unit for a vehicle may include: a plurality of reinforcement beams disposed on an exterior circumference of a center pillar inner panel in a height direction; an upper bracket disposed on an upper end portion of the center pillar inner panel and a roof rail, and fixing an end portion of the plurality of reinforcement beams; a center bracket disposed on a center portion of the center pillar inner panel, and fixing a center of the plurality of reinforcement beams; a lower bracket disposed on a lower portion of the center pillar inner panel, and fixing a lower portion of the plurality of reinforcement beams; and a gusset bracket formed inside of a side sill seal so that the lower portion of the plurality of reinforcement beams is assembled.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: May 3, 2016
    Assignee: SUNGWOO HITECH CO., LTD.
    Inventors: Yongwoo Jung, Do-Hoi Koo, Mun Yong Lee
  • Publication number: 20150183466
    Abstract: A center pillar reinforcement unit for a vehicle is provided. A center pillar reinforcement unit for a vehicle according to an exemplary embodiment of the present invention may include: a plurality of reinforcement beams disposed on an exterior circumference of a center pillar inner panel in a height direction; an upper bracket disposed on an upper end portion of the center pillar inner panel and a roof rail, and fixing an end portion of the plurality of reinforcement beams; a center bracket disposed on a center portion of the center pillar inner panel, and fixing a center of the plurality of reinforcement beams; a lower bracket disposed on a lower portion of the center pillar inner panel, and fixing a lower portion of the plurality of reinforcement beams; and a gusset bracket formed inside of a side seal so that the lower portion of the plurality of reinforcement beams is assembled.
    Type: Application
    Filed: December 26, 2014
    Publication date: July 2, 2015
    Inventors: Yongwoo JUNG, Do-Hoi KOO, Mun Yong LEE
  • Patent number: 8590952
    Abstract: A crash box of a bumper for a vehicle is provided in the bumper to absorb collision energy produced in a collision. The crash box is constructed such that upper and lower horizontal partitions and a plurality of vertical partitions are connected to each other to form a lattice structure having a plurality of hollow portions, and each of the vertical partitions is formed to be bent at a middle portion thereof. A vertical partition located at the outermost position of the hollow portions forming the lattice structure is bent towards the inside of the crash box, and a vertical partition provided in a middle portion of the crash box is bent to the outside or inside of the vehicle.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: November 26, 2013
    Assignees: Hyundai Motor Company, Kia Motors Corp., Sung Woo Hitech Co., Ltd.
    Inventors: Phil Jung Jeong, Hyun Kim, Jun Mo Ku, Hee Jun Jeong, Do Hoi Koo, Do Hyun Kim
  • Patent number: 8453483
    Abstract: A magnetic pulse forming device for a roll forming system includes forward and rearward guide rolling means, a guiding means including guiding rails disposed on the base between the forward and rearward guide rolling means and guide frames movably disposed on the guiding rails, a magnetic forming means including an upper plate connecting the guide frames corresponding to an upper surface of the forming beam, a coil housing assembled to the upper plate and a coil disposed within the coil housing and electrically connected to a pulse generator to generate a magnetic pulse by input current, a movement detector, a synchronizing motor connected to the lead screw to rotate the lead screw and a screw housing engaged with the lead screw and moving the guide frames with the forming beam in the process direction by rotation of the lead screw, and a forming mold.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: June 4, 2013
    Assignee: Sungwoo Hitech Co., Ltd.
    Inventors: Do-Hoi Koo, Su Jin Heo
  • Publication number: 20130133389
    Abstract: A magnetic pulse forming device for a roll forming system includes forward and rearward guide rolling means, a guiding means including guiding rails disposed on the base between the forward and rearward guide rolling means and guide frames movably disposed on the guiding rails, a magnetic forming means including an upper plate connecting the guide frames corresponding to an upper surface of the forming beam, a coil housing assembled to the upper plate and a coil disposed within the coil housing and electrically connected to a pulse generator to generate a magnetic pulse by input current, a movement detector, a synchronizing motor connected to the lead screw to rotate the lead screw and a screw housing engaged with the lead screw and moving the guide frames with the forming beam in the process direction by rotation of the lead screw, and a forming mold.
    Type: Application
    Filed: December 14, 2011
    Publication date: May 30, 2013
    Applicant: SUNGWOO HITECH CO., LTD.
    Inventors: Do-Hoi Koo, Su Jin Heo
  • Patent number: 8336355
    Abstract: The present invention relates to a roll-forming system and a method thereof that enables both ends of a panel to be formed attractively by roll-forming the panel after cutting grooves are formed at both ends of the panel by using a blanking press.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 25, 2012
    Assignee: Sungwoo Hitech Co., Ltd.
    Inventors: Do-Hoi Koo, Suek-Jun Choi
  • Publication number: 20120139273
    Abstract: A crash box of a bumper for a vehicle is provided in the bumper to absorb collision energy produced in a collision. The crash box is constructed such that upper and lower horizontal partitions and a plurality of vertical partitions are connected to each other to form a lattice structure having a plurality of hollow portions, and each of the vertical partitions is formed to be bent at a middle portion thereof. A vertical partition located at the outermost position of the hollow portions forming the lattice structure is bent towards the inside of the crash box, and a vertical partition provided in a middle portion of the crash box is bent to the outside or inside of the vehicle.
    Type: Application
    Filed: June 27, 2011
    Publication date: June 7, 2012
    Applicants: Hyundai Motor Company, Sung Woo Hitech Co., Ltd., Kia Motors Corporation
    Inventors: Phil Jung Jeong, Hyun Kim, Jun Mo Ku, Hee Jun Jeong, Do Hoi Koo, Do Hyun Kim
  • Publication number: 20090165520
    Abstract: The present invention relates to a roll-forming system and a method thereof that enables both ends of a panel to be formed attractively by roll-forming the panel after cutting grooves are formed at both ends of the panel by using a blanking press.
    Type: Application
    Filed: May 28, 2008
    Publication date: July 2, 2009
    Applicant: SUNGWOO HITECH CO., LTD.
    Inventors: Do-Hoi KOO, Suek-Jun Choi