Patents by Inventor Chin Y. Cha

Chin Y. Cha 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).

  • Getter assembly with stiffened getter wand and CRT
    Patent number: 5841228
    Abstract: A cathode ray tube (CRT) has a getter attachment wand with a trough-shape along a substantial portion of its length, imparting an increased stiffness to the wand to maintain the wand in close proximity to the inside surface of the CRT envelope, thereby avoiding clipping of the electron beam on its way to the screen. An optimal curvature of the wand strikes a balance between the desired stiffness and the ease with which the wand can be resistance welded to the top cup of the electron gun assembly.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: November 24, 1998
    Assignee: U.S. Philips Corporation
    Inventors: Chin Y. Cha, Shridhar V. Iyer, Thomas W. Penird
  • Cathode ray tube with improved yoke clamp
    Patent number: 5568010
    Abstract: The deflection coil for a cathode ray tube is secured to the outside of the glass envelope of the tube via a yoke assembly including a yoke clamp having a band which encircles the assembly and is adjusted to securely hold the assembly in place. Dividing the band into sub bands separated by a space along substantially the entire length of the band significantly reduces the stress on the neck of the glass envelope of a cathode ray tube, thereby reducing the incidences of tube failures due to neck cracking.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: October 22, 1996
    Assignee: Philips Electronics North America Corporation
    Inventors: Chin Y. Cha, Shridhar V. Iyer