Patents by Inventor Jay D. Ondra

Jay D. Ondra 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).

  • Faceplate stress-relief in tension mask color cathode ray tube manufacture
    Patent number: 5145437
    Abstract: An apparatus for use in the manufacture of a color cathode ray tube that includes a faceplate with a screen embraced by which rails support a flat tension mask. The apparatus includes a radiant heat source for heating the faceplate, and shielding means including a heat shield for shielding a central area of the faceplate from the radient heat source. Stresses induced in the corners of the faceplate by the rails during thermal cycling of the tube are dispersed in the cooler central area of the faceplate.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: September 8, 1992
    Assignee: Zenith Electronics Corporation
    Inventors: Jay D. Ondra, Paul R. Riopel