Patents by Inventor Yoon Keun Kwak

Yoon Keun Kwak 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).

  • Publication number: 20110155683
    Abstract: A crane spreader for use in lifting a container includes an attachment unit, a head block, a frame unit, a position adjustment unit and a fixation unit. The attachment unit detachably attaches the crane spreader to an upper surface of the container. The head block has a pulley connected to a trolley of a crane through a cable and coupled to the attachment unit to restrict a horizontal movement the attachment unit with respect to the head block. The frame unit is supported by the head block to be horizontally movable with respect to the head block, the frame unit being disposed below the head block with a gap therebetween. The position adjustment unit aligns the frame unit with the container by displacing the frame unit with respect to the attachment unit. The fixation unit engages the container with the frame unit.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 30, 2011
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Soo Hyun KIM, Eun Ho Kim, In Gwun Jang, Yunsub Jung, Hanjong Ju, Yoon Keun Kwak, Byung Man Kwak, Kyung Woon Kwak, Doo Yeol Koh, Sang Jun Yoo, Jung Kim, Yun Sic Hong