Patents by Inventor Dae-Hun Cho

Dae-Hun Cho 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: 20250033471
    Abstract: A non-contact interface device for a vehicle and a method for controlling the same, may display an operation system menu for a driver and passengers to operate various kinds of devices of the vehicle as a hologram, enable a user to operate the displayed operation system menu in a non-contact manner by use of the user's finger or the like, and provide the user with a tactile feedback for a non-contact operation, so that the user can recognize whether to have operated the menu.
    Type: Application
    Filed: November 20, 2023
    Publication date: January 30, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, Korea Institute of Science and Technology
    Inventors: Dong Gu Kim, Jang Hyeon Lee, Dae Sung Kwon, Hyun Soo Kim, Il Seon Yoo, Byung Chul Lee, Seong Hun Cho, Seung Hyub Baek, Min Seok Kim, Soo Young Jung
  • Publication number: 20050061267
    Abstract: A check valve for a diesel engine comprises a pipe formed with an oil inlet and oil outlet. A piston is slidably installed in the pipe and a spring pressures the piston toward the oil inlet side for closing an oil passage connecting the oil inlet and oil outlet. The spring is an asymmetric compression spring, which allows the compression length change of the spring to be relatively large at low oil pressure and slight at high oil pressure. Thereby, relatively increasing the oil jet change amount when the rpm of the diesel engine is low and decreasing the oil jet change amount when the rpm of the diesel engine is high. Thus reducing frictional loss of the engine oil pump and improving the fuel consumption rate.
    Type: Application
    Filed: December 30, 2003
    Publication date: March 24, 2005
    Inventor: Dae-Hun Cho