Patents by Inventor Eui-Jung Yeon

Eui-Jung Yeon 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: 6817507
    Abstract: A capstan motor for a magnetic recording and reproducing apparatus includes a stator having a coil disposed on outer peripheral direction thereof, and a rotor having a magnet to correspond to coil and rotated by an electromagnetic interaction between the coil and the magnet. A capstan shaft is rotated integrally with the rotor, is fixed on the rotor and installed so that one side of the capstan shaft is cohered with a pinch roller taking a tape therebetween to drive the tape with the pinch roller. The magnet has a predetermined shape and is provided to apply magnetic force of the magnet eccentrically for an electromagnetic force generated on the coil so that a predetermined thrust can be applied to the capstan shaft toward one direction between upper and lower directions of the shaft direction.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: November 16, 2004
    Assignee: LG Electronics Inc.
    Inventor: Eui-Jung Yeon
  • Publication number: 20030076614
    Abstract: A capstan motor for a magnetic recording and reproducing apparatus comprises a stator including a coil; a rotor having a magnet to correspond the coil and rotated; and a capstan shaft rotated integrally with the rotor and installed so that one side of the capstan shaft is cohered with a pinch roller taking a tape therebetween to drive the tape with the pinch roller, wherein the magnet of a predetermined shape is provided to apply magnetic force of the magnet eccentrically for an electromagnetic force generated on the coil so that a predetermined thrust can be applied to the capstan shaft toward one direction between upper and lower directions of the shaft direction, therefore, a constant thrust in length direction of the capstan shaft is generated to minimize vibration of the tape, and thereby reliability for reproducing and recording of the magnetic recording and reproducing apparatus can be improved.
    Type: Application
    Filed: October 17, 2002
    Publication date: April 24, 2003
    Inventor: Eui-Jung Yeon
  • Patent number: 6128157
    Abstract: A structure for pressing a cassette in a magnetic record and playback machine which includes a cassette holder having guide posts containing fixing slots on both lateral sides of the cassette holder, a driving arm having concave slots in which the guide posts are inserted, and an elastic supporting member surrounding the upper side and both lateral sides of the cassette holder. The upper part of the elastic supporting member has one or more folds which extend downward and both ends of the elastic supporting member are placed in the fixing slots of the guide posts, and both ends of the elastic supporting member are inserted into the concave slots of the driving arm along with the guide posts.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: October 3, 2000
    Assignee: LG Electronics, Inc
    Inventors: Sung Hun Choi, Myung Cheol Baek, You Seok Chae, Sung Pyo Hong, Jong Dae Park, Soo Beom Lee, Joon Bong Bang, Eui Jung Yeon