Patents by Inventor Ju-Heon Ko

Ju-Heon Ko 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: 8774447
    Abstract: Disclosed is a crossover double speaker having a small speaker and a large speaker on the upper side and on the lower side thereof. The crossover double speaker includes a cover integrally formed on the outer circumference of a flange of the yoke; a frame disposed below the cover; a first speaker unit including a first magnet disposed in a first speaker space, a first vibration plate arranged over the first magnet, and a first voice coil inserted into a first air gap; and a second speaker unit including a second magnet disposed in a second speaker space, a second vibration plate arranged between the yoke and the frame, and a second voice coil inserted into a second air gap. The yoke has sound release holes to output the sound generated from the second speaker unit in the direction of the first speaker unit.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: July 8, 2014
    Assignee: Youngbo Engineering Industries, Inc.
    Inventor: Ju-Heon Ko