Patents by Inventor Byeong Sam Yoo

Byeong Sam Yoo 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).

  • Braking device for a door operator
    Patent number: 9731941
    Abstract: A device for inhibiting the closing of a door that controls entry of an enclosure includes a first magnet disposed on a driven portion of the device and a second magnet disposed on a fixed portion of the enclosure. The first magnet and the second magnet are configured to be in register with each other as the door moves toward a closed position such that if the first magnet and the second magnet are in register with each other, a pole of the first magnet is in close proximity of a pole of the second magnet such that the first magnet and the second magnet react to each other to inhibit motion of the door towards the closed position.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: August 15, 2017
    Assignee: Otis Elevator Company
    Inventors: Jinkoo Lee, Jung Sam Kim, Byeong Sam Yoo, Hansoo Shim, Guohong Hu, Mark Steven Thompson
  • Braking Device for a Door Operator
    Publication number: 20130056306
    Abstract: A device for inhibiting the closing of a door that controls entry of an enclosure includes a first magnet disposed on a driven portion of the device and a second magnet disposed on a fixed portion of the enclosure. The first magnet and the second magnet are configured to be in register with each other as the door moves toward a closed position such that if the first magnet and the second magnet are in register with each other, a pole of the first magnet is in close proximity of a pole of the second magnet such that the first magnet and the second magnet react to each other to inhibit motion of the door towards the closed position.
    Type: Application
    Filed: November 30, 2010
    Publication date: March 7, 2013
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Jinkoo Lee, Jung Sam Kim, Byeong Sam Yoo, Hansoo Shim, Guohong Hu, Mark Steven Thompson