Patents by Inventor Ii Shik Yoon

Ii Shik Yoon 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).

  • Patent number: 10618773
    Abstract: A device for controlling an operation of an elevator by using a monitor comprises: a monitor, which is installed on a wall surface of a cage of an elevator, a surface of a door of the elevator, or a wall surface of a building next to the door of the elevator, displays various buttons including a start button, an emergency button, and floor buttons controlling an operation of the elevator, and includes an embedded speaker; two pin cameras positioned at upper left and right sides of the monitor, respectively; and a controller, which controls operations of the various buttons of the monitor, an operation of the pin camera, and the operation of the elevator.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 14, 2020
    Inventor: II Shik Yoon
  • Patent number: 7469773
    Abstract: An assistant ceiling device designed to shield an escape hatch installed to a ceiling of an elevator cab is provided. The assistant ceiling device includes two elongated rail guides and a rectangular assistant ceiling plate. Each guide is installed at either side of the emergency escape hatch and has a length longer than that of the emergency escape hatch and shorter than that of the ceiling of the elevator cab. The assistant ceiling plate is laid on the rail guides to shield the emergency escape hatch. Each guide has a latching jaw so as to allow the assistant ceiling plate to be installed to the rail guides by laying both sides of the ceiling plate on the latching jaws.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: December 30, 2008
    Inventor: Ii Shik Yoon