Patents by Inventor Bruno Francis Roussel

Bruno Francis Roussel 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).

  • Electron beam deflection device for cathode ray tubes which is self convergent and geometry corrected
    Patent number: 5847503
    Abstract: A deflection device for a cathode-ray tube with three coplanar guns, comprising a pair of horizontal deflection coils and a pair of vertical deflection coils, each horizontal deflection coil having a main deflection winding extending over the length of the deflection device, and an auxiliary deflection winding. Each main deflection winding has a front portion and a rear portion. The auxiliary deflection winding is disposed in the front portion of the main deflection winding and is arranged to generate a magnetic field opposed to a field of the main deflection winding.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: December 8, 1998
    Assignee: Thomson Tubes & Displays S.A.
    Inventors: Bruno Francis Roussel, Alain Dumesnil