Patents Examined by Moore, David K.
  • Method of manufacturing and adjusting a color picture tube
    Patent number: 4659957
    Abstract: A three electron gun color picture tube includes phosphorescent marks attached to the rear side fo the shadow mask. These marks can be used for checking the exact position of the electron beams during adjustment.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: April 21, 1987
    Assignee: ITT Industries, Inc.
    Inventor: Eberhard Nill
  • Electron multipliers
    Patent number: 4482836
    Abstract: A channel plate electron multiplier of the discrete dynode type formed from conductive sheets which are stacked in closely spaced relation. Each sheet is perforated with apertures which are aligned to form electron multiplying channels. The apertures in each sheet have input and output and cross sections which are approximately the same size and a concave shaped inner surface profile which causes a majority of electrons to strike the inner surface close to the output end, whereby the gain of the multiplier is increased.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: November 13, 1984
    Assignee: U.S. Philips Corporation
    Inventors: Derek Washington, Hewson N. G. King, Pamela M. Stubberfield