Patents by Inventor Byeong-sang Yun

Byeong-sang Yun 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).

  • Yoke member for voice coil motor
    Patent number: 5202595
    Abstract: A voice coil motor is disclosed which comprises a yoke member composed of a central portion forming magnetic path, left/right fringes and upper/lower fringes, a moving coil wound movably around the central portion of the yoke member, and permanent magnets being adhered on the upper/lower fringes of the yoke member and applying magnetic field to the moving coil, wherein the yoke member is formed by overlapping at least two members of different permeabilities so as to uniform each reluctance of lines of magnetic force being generated from the permanent magnets and flowing through the yoke member.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: April 13, 1993
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jun-seok Sim, Byeong-sang Yun