Patents by Inventor Chol Woo LEE

Chol Woo LEE 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).

  • Compound transmission of combining differential gear and continuously variable transmission
    Patent number: 10724619
    Abstract: The present invention relates to a transmission for a vehicle, and more particularly, to a compound transmission of combining a differential gear and a continuously variable transmission, which transmits power through the differential gear and a transmission gear at a low speed and transmits the power through the continuously variable transmission and the differential gear at a high speed. According to the present invention, the shifting is performed through the differential gear unit at a low stage requiring large torque and low rpm and performs the shifting through the continuously variable transmission at a high stage requiring relatively small torque and high rpm to provide optimum shifting efficiency by collecting only advantageous of the respective units.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: July 28, 2020
    Assignee: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES
    Inventors: Chol Woo Lee, Yong Chan Cho, Chan Hee Park
  • COMPOUND TRANSMISSION OF COMBINING DIFFERENTIAL GEAR AND CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20180180151
    Abstract: The present invention relates to a transmission for a vehicle, and more particularly, to a compound transmission of combining a differential gear and a continuously variable transmission, which transmits power through the differential gear and a transmission gear at a low speed and transmits the power through the continuously variable transmission and the differential gear at a high speed. According to the present invention, the shifting is performed through the differential gear unit at a low stage requiring large torque and low rpm and performs the shifting through the continuously variable transmission at a high stage requiring relatively small torque and high rpm to provide optimum shifting efficiency by collecting only advantageous of the respective units.
    Type: Application
    Filed: September 11, 2015
    Publication date: June 28, 2018
    Applicant: Korea Institute Of Geoscience and Mineral Resoures
    Inventors: Chol Woo LEE, Yong Chan CHO, Chan Hee PARK