Patents by Inventor Dan Joseph Haflinger

Dan Joseph Haflinger 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).

  • Collimated beam electron gun system for shaped beam cathode ray tube
    Patent number: 4032815
    Abstract: An electron gun system is described for generating a high current collimated beam of electrons for use in a shaped beam cathode ray tube system. The electron gun includes a cathode having an electron emitting surface for generating free electrons, a collimating grid axially spaced from the cathode and having a central aperture, and a control grid axially spaced from the collimating grid and having a central aperture axially aligned with the aperture of the collimating grid. The control grid receives a varying potential for establishing an electric field which is substantially axial over at least a central portion of the electron beam so as to collimate the beam axially.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: June 28, 1977
    Assignee: Stromberg Datagraphix Inc.
    Inventor: Dan Joseph Haflinger