Patents by Inventor Jong Ik CHOI

Jong Ik 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).

  • Method and apparatus for controlling clutch using fail-safe valve
    Patent number: 9476466
    Abstract: Apparatus for controlling a clutch using a fail-safe valve, and the apparatus includes: a fail-safe valve which is moved to the left or right according to an on-off operation of an on-off solenoid valve; and a control unit configured to control the fail-safe valve through the on-off solenoid valve; wherein when engine torque is a predetermined reference value or more, the control unit turns off the on-off solenoid valve to move the fail-safe valve for applying line pressure to the clutch, and when the engine torque is lower than the predetermined reference value, the control unit turns on the on-off solenoid valve to move the fail-safe valve for applying control pressure to the clutch.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: October 25, 2016
    Assignee: HYUNDAI AUTRON CO., LTD.
    Inventors: Kwang Hyuk Lim, Chang Kyu Shin, John Ha Lee, Jong Ik Choi, Se Hoon Son
  • METHOD AND APPARATUS FOR CONTROLLING CLUTCH USING FAIL-SAFE VALVE
    Publication number: 20160032989
    Abstract: Disclosed are a method and an apparatus for controlling a clutch using a fail-safe valve, and the apparatus includes: a fail-safe valve which is moved to the left or right according to an on-off operation of an on-off solenoid valve; and a control unit configured to control the fail-safe valve through the on-off solenoid valve; wherein when engine torque is a predetermined reference value or more, the control unit turns off the on-off solenoid valve to move the fail-safe valve for applying line pressure to the clutch, and when the engine torque is lower than the predetermined reference value, the control unit turns on the on-off solenoid valve to move the fail-safe valve for applying control pressure to the clutch.
    Type: Application
    Filed: December 9, 2014
    Publication date: February 4, 2016
    Applicant: HYUNDAI AUTRON CO., LTD.
    Inventors: Kwang Hyuk LIM, Chang Kyu SHIN, John Ha LEE, Jong Ik CHOI, Se Hoon SON