Patents by Inventor Sung Jun Ju

Sung Jun Ju 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).

  • Wormgear shaped driving part, elevator using wormgear shaped driving part and elevating system
    Patent number: 9463957
    Abstract: An elevator moving along an elevator shaft in a building, comprises a car for transport, a worm driving part moving together with the car, a rotating axis of which is parallel to a moving path of the car, and a worm support part including supporting teeth installed in the elevator shaft along the moving path of the car in accordance with worm teeth of the worm driving part. Using the worm driving part and the worm support part mutually interacting, the elevator can go up and down, and the worm driving part and the worm support part keep low frictional resistance to improve an efficiency of lifting.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: October 11, 2016
    Assignee: COREEELEVATOR CO., LTD.
    Inventors: Nam Young Kim, Sung Jun Ju, Hyon Jo Ji
  • WORMGEAR SHAPED DRIVING PART, ELEVATOR USING WORMGEAR SHAPED DRIVING PART AND ELEVATING SYSTEM
    Publication number: 20130206514
    Abstract: An elevator moving along an elevator shaft in a building, comprises a car for transport, a worm driving part moving together with the car, a rotating axis of which is parallel to a moving path of the car, and a worm support part including supporting teeth installed in the elevator shaft along the moving path of the car in accordance with worm teeth of the worm driving part. Using the worm driving part and the worm support part mutually interacting, the elevator can go up and down, and the worm driving part and the worm support part keep low frictional resistance to improve an efficiency of lifting.
    Type: Application
    Filed: August 3, 2011
    Publication date: August 15, 2013
    Applicant: COREEELEVATOR CO., LTD.
    Inventors: Nam Young Kim, Sung Jun Ju, Hyon Jo Ji