Patents by Inventor Kent L. Headley

Kent L. Headley 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).

  • Device for correction of negative differential coma error in cathode ray tubes
    Patent number: 5777429
    Abstract: A device for correction of negative differential coma error in convergence free deflection yokes. The deflection yoke encloses a portion of a cathode ray tube, including a portion of the cathode ray tube neck, and includes: a separator around which is wound a horizontal deflection coil for providing a horizontal magnetic deflection field; a core around which is wound a vertical deflection coil for providing a vertical magnetic deflection field, the core partially encircling the separator; and a rear cover which attaches the deflection yoke to the cathode ray tube, the rear cover being disposed around the neck of the cathode ray tube and having a first side facing the direction of the screen of the cathode ray tube and resting against a rear end of the separator.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: July 7, 1998
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventor: Kent L. Headley