Patents by Inventor Ik Hyeon Choi

Ik Hyeon 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).

  • Patent number: 10184212
    Abstract: Coupling body devices, including methods of making the same, are provided and described. A method of manufacturing a coupling body, for example, can include forming a tube by braiding nonmetal fibers, forming a flange by rolling inwards an end of the tube, providing a metallic connector, inserting at least one Z-pin in an end portion of the connector, and coupling the tube and the connector by inserting the Z-pin in the flange and performing a composite material forming process.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 22, 2019
    Assignee: Korea Aerospace Research Institute
    Inventors: Ik Hyeon Choi, Ho Sung Lee, Gi Hyuk Choi, In Hee Hwang
  • Patent number: 9434110
    Abstract: Provided are a method of manufacturing a Z-pin having an unevenness shape formed on a surface thereof so as to economically and effectively increase coupling force in the Z-pin for coupling of a composite material laminated structure in a laminated direction, and a Z-pin manufactured using the same and a composite structure including the Z-pin.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: September 6, 2016
    Assignee: KOREA AEROSPACE RESEARCH INSTITUTE
    Inventors: Ik Hyeon Choi, Cheol Ho Lim, Eun Sup Sim
  • Publication number: 20160168788
    Abstract: Coupling body devices, including methods of making the same, are provided and described. A method of manufacturing a coupling body, for example, can include forming a tube by braiding nonmetal fibers, forming a flange by rolling inwards an end of the tube, providing a metallic connector, inserting at least one Z-pin in an end portion of the connector, and coupling the tube and the connector by inserting the Z-pin in the flange and performing a composite material forming process.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 16, 2016
    Applicant: Korea Aerospace Research Institute
    Inventors: Ik Hyeon Choi, Ho Sung Lee, Gi Hyuk Choi, In Hee Hwang
  • Publication number: 20150024203
    Abstract: Provided are a method of manufacturing a Z-pin having an unevenness shape formed on a surface thereof so as to economically and effectively increase coupling force in the Z-pin for coupling of a composite material laminated structure in a laminated direction, and a Z-pin manufactured using the same and a composite structure including the Z-pin.
    Type: Application
    Filed: November 21, 2013
    Publication date: January 22, 2015
    Applicant: Korea Aerospace Research Institute
    Inventors: Ik Hyeon CHOI, Cheol Ho LIM, Eun Sup SIM
  • Publication number: 20140250665
    Abstract: Provided are a Z-pinning patch capable of improving process efficiency, productivity, and the like, by allowing Z-pinning of a composite laminated structure to be realized using a structure as simple as possible, and a method for manufacturing or jointing composite laminated structures using the same. The Z-pinning patch used for Z-pinning for reinforcing delamination performance of composite laminated structures or connecting between a plurality of laminated members, includes: a base plate formed in a plate form; and a plurality of pins fixed to one side of the base plate.
    Type: Application
    Filed: September 25, 2012
    Publication date: September 11, 2014
    Inventors: Ik Hyeon Choi, Cheol Ho Lim, Eun Sup Sim
  • Patent number: 8205654
    Abstract: A composite laminated structure is reinforced by inserting pins into a device for manufacturing a composite laminated structure. The device has a bottom guide on a composite laminated structure in a pre- or post-cured state. The device has first vertical pins that are inserted into the composite laminated structure. A top guide, on the bottom guide, has guide pins that are movable in a vertical direction at positions corresponding to the first pins.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: June 26, 2012
    Assignee: Korea Aerospace Research Institute
    Inventors: Ik Hyeon Choi, In Hee Hwang, Eung Tai Kim, Seok Min Ahn, Chan Hong Yeom, Dae Sung Lee
  • Publication number: 20100167039
    Abstract: A composite laminated structure is reinforced by inserting pins into a device for manufacturing a composite laminated structure. The device has a bottom guide on a composite laminated structure in a pre- or post-cured state. The device has first vertical pins that are inserted into the composite laminated structure. A top guide, on the bottom guide, has guide pins that are movable in a vertical direction at positions corresponding to the first pins.
    Type: Application
    Filed: September 8, 2008
    Publication date: July 1, 2010
    Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
    Inventors: Ik Hyeon Choi, In Hee Hwang, Eung Tai Kim, Seok Min Ahn, Chan Hong Yeom, Dae Sung Lee