Patents by Inventor Choong O. Ryu

Choong O. Ryu 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: 8459978
    Abstract: A mold for manufacturing a composite drive shaft, most of which, except for opposite ends functioning as power transmission parts, has a tubular shape with a circular cross-section similar to that of a general shaft, and the shape of each end of which is changed so as to realize easy removal of the drive shaft from the mold after molding. Further, the present invention provides a composite drive shaft, which is manufactured using the mold and is configured such that, when a connection joint (metal yoke) is assembled with each end of the drive shaft, the drive shaft can be rotated in an integrated state realized by the connection joints. Thus, the composite drive shaft of the present invention can directly transmit power, instead of a mechanical fastening jointing technique or an adhesive bonding jointing technique, thus efficiently transmitting high torque.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: June 11, 2013
    Inventor: Choong O Ryu
  • Publication number: 20100144453
    Abstract: The present invention provides a connection joint, which is configured to be efficiently fastened to each end of a composite drive shaft having respective power transmission parts in opposite ends thereof. Further, the present invention also provides a composite drive shaft assembly, which has an integrated structure realized by easily fastening respective connection joints in opposite ends of the composite drive shaft, most of which, except for the opposite ends functioning as power transmission parts, has a tubular shape with a circular cross-section, similar to that of a general shaft, so that the composite drive shaft assembly can efficiently transmit high torque.
    Type: Application
    Filed: April 7, 2008
    Publication date: June 10, 2010
    Inventor: Choong O Ryu
  • Publication number: 20100113169
    Abstract: A mold for manufacturing a composite drive shaft, most of which, except for opposite ends functioning as power transmission parts, has a tubular shape with a circular cross-section similar to that of a general shaft, and the shape of each end of which is changed so as to realize easy removal of the drive shaft from the mold after molding. Further, the present invention provides a composite drive shaft, which is manufactured using the mold and is configured such that, when a connection joint (metal yoke) is assembled with each end of the drive shaft, the drive shaft can be rotated in an integrated state realized by the connection joints. Thus, the composite drive shaft of the present invention can directly transmit power, instead of a mechanical fastening jointing technique or an adhesive bonding jointing technique, thus efficiently transmitting high torque.
    Type: Application
    Filed: April 7, 2008
    Publication date: May 6, 2010
    Inventor: Choong O. Ryu