Patents by Inventor Mary E. Doersom

Mary E. Doersom 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).

  • In-line electron gun and method for modifying the same
    Patent number: 4370593
    Abstract: An in-line electron gun mount comprises a plurality of cathodes for producing and directing a plurality of electron beams along spaced co-planar paths. A shield cup having a back surface with a plurality of co-planar apertures therethrough is disposed along the beam paths. One of the apertures of the shield cup has a first pair of magnetically permeable members attached to the back surface of the shield cup. A nonmagnetic plate having a plurality of co-planar apertures therethrough has a second pair of magnetically permeable members attached to one surface thereof. The plate is attached to the back surface of the shield cup so that the second pair of members are disposed between the back surface of the shield cup and the plate. The plate apertures are substantially aligned with the shield cup apertures.
    Type: Grant
    Filed: December 30, 1980
    Date of Patent: January 25, 1983
    Assignee: RCA Corporation
    Inventors: Raymond H. Sweigart, Mary E. Doersom