Patents by Inventor Ralph Wilhelmus Lambertus Johannus Dams

Ralph Wilhelmus Lambertus Johannus Dams 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).

  • Cathode ray tube with anti-ringing coil
    Patent number: 6833662
    Abstract: The invention relates to a cathode ray tube comprising means (5) for generating an electron beam (6,7,8), means (51) for deflecting the electron beam, and a coil (14′) for influencing a deflection of the electron beam (6,7,8). The coil (14′) comprises an electrically conductive coil holder (46) and coil windings (47,48) having an electrically conductive outer layer (44). The electrically conductive layer (44) of the coil wires (41) and the coil holder (46) cooperate with each other so as to form a conductive path A between successive coil windings (47,48). Due to the outer layer (44) of the wires and the conductive coil holder (46) an electrical path A between successive windings (47,48) is created that provides damping and by which ringing is suppressed.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: December 21, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Dirk Willem Harberts, Ralph Wilhelmus Lambertus Johannus Dams
  • Cathode ray tube with anti-ringing coil
    Publication number: 20030057820
    Abstract: The invention relates to a cathode ray tube comprising means (5) for generating an electron beam (6,7,8), means (51) for deflecting the electron beam, and a coil (14′) for influencing a deflection of the electron beam (6,7,8). The coil (14′) comprises an electrically conductive coil holder (46) and coil windings (47,48) having an electrically conductive outer layer (44). The electrically conductive layer (44) of the coil wires (41) and the coil holder (46) cooperate with each other so as to form a conductive path A between successive coil windings (47,48). Due to the outer layer (44) of the wires and the conductive coil holder (46) an electrical path A between successive windings (47,48) is created that provides damping and by which ringing is suppressed.
    Type: Application
    Filed: September 4, 2002
    Publication date: March 27, 2003
    Inventors: Dirk Willem Harberts, Ralph Wilhelmus Lambertus Johannus Dams