Patents by Inventor Sun Beom Woo

Sun Beom Woo 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).

  • Two-speed transmission for electric vehicle
    Patent number: 10480622
    Abstract: The present invention relates to a two-speed transmission and includes a first sun gear; a second sun gear; a plurality of first planetary gears which are engaged with the first sun gear to rotate or revolve along a circumferential direction of the first sun gear; a ring gear which includes an inner circumferential gear and an outer circumferential gear, the outer gear rotating by being engaged with an input gear which rotates by a driving device; a plurality of second planetary gears which are engaged with the inner circumferential gear and the second sun gear to rotate or revolve along a circumferential direction of the second sun gear; a carrier to which the first planetary gears and the second planetary gears are rotatably connected; and a brake part which selectively fixes the first sun gear and the second sun gear.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 19, 2019
    Assignee: NEOOTO CO., LTD.
    Inventors: Sun Hyun Kim, Sun Beom Woo, Se Hoon Oh, Duk Soon Choi
  • TWO-SPEED TRANSMISSION FOR ELECTRIC VEHICLE
    Publication number: 20180216709
    Abstract: The present invention relates to a two-speed transmission and includes a first sun gear; a second sun gear; a plurality of first planetary gears which are engaged with the first sun gear to rotate or revolve along a circumferential direction of the first sun gear; a ring gear which includes an inner circumferential gear and an outer circumferential gear, the outer gear rotating by being engaged with an input gear which rotates by a driving device; a plurality of second planetary gears which are engaged with the inner circumferential gear and the second sun gear to rotate or revolve along a circumferential direction of the second sun gear; a carrier to which the first planetary gears and the second planetary gears are rotatably connected; and a brake part which selectively fixes the first sun gear and the second sun gear.
    Type: Application
    Filed: December 7, 2017
    Publication date: August 2, 2018
    Applicant: NEOOTO CO., LTD.
    Inventors: Sun Hyun KIM, Sun Beom Woo, Se Hoon Oh, Duk Soon Choi