Patents Examined by Ken Berck
  • Locking device for microchannel plate in image amplifier tube
    Patent number: 7064486
    Abstract: An image intensifier tube comprising a housing which holds a photocathode and a screen, wherein a microchannel plate is supported in a recess in an interior surface of an annular collar which is also held in the housing.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: June 20, 2006
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventor: Thomas Theodore Mabry
  • Spark plug and producing method therefor
    Patent number: 6768249
    Abstract: In a spark plug, a complex chromate coat 42 that contains a chromium component and a phosphorus component as cationic components, at least 90 wt % of the chromium component being trivalent chromium and the phosphorus component being present in an amount of 1 to 15 wt % as calculated for PO4, is formed on the surface of the galvanized main metal shell 1 of a spark plug. If a silicon component is substituted for the phosphorus component, it may be present in an amount of 5 to 75 wt % as calculated for SiO2.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: July 27, 2004
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hiroaki Nasu, Wataru Matsutani
  • Locking device for microchannel plate in image amplifier tube
    Patent number: 6628073
    Abstract: An image intensifier tube comprising a housing which holds a photocathode and a screen, wherein a microchannel plate is supported in a recess in an interior surface of an annular collar which is also held in the housing.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: September 30, 2003
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventor: Thomas Theodore Mabry
  • Flat reflector lamp for dielectrically inhibited discharges with spacers
    Patent number: 6531822
    Abstract: The invention relates to a flat reflector lamp for dielectrically inhibited discharges (14). Greater configuration flexibility is achieved in electrode design (11, 12) while simultaneously ensuring stability of the discharge vessel (1, 2) and preserving the possibility of minimum light reflection impairment by mounting the spacers (3) separated from the flat reflector frames (15) between the base plate (1) and the cover plate (2), the latter being arranged between the electrode strips (11, 12).
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: March 11, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
    Inventors: Frank Vollkommer, Lothar Hitzschke
  • Cathode ray tube
    Patent number: 6479928
    Abstract: A CRT has an improved contrast with a provision of a filter layer where nano-sized metal particles are dispersed in a dielectric matrix to selectively absorb light in predetermined wavelengths, specifically wavelengths between peak wavelengths of primary colors emitted by phosphors coated on the inner surface of the face plate. The improved contrast is a result of the metal particles in a dielectric matrix resonating with particular wavelengths and thus absorbing them.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: November 12, 2002
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong-hyuk Lee, Jung-hwan Park, Yoon-hyung Cho, Hae-seung Lee, Dong-sik Zang
  • TIR lens for uniform brightness
    Patent number: 6429581
    Abstract: This invention provides a TIR (total internal reflecting) lens to capture and redirect light from multiple light sources, such as neon or fluorescent lamps, to generate a light of uniform brightness across the lens face.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 6, 2002
    Assignee: Corning Incorporated
    Inventor: Jackson P. Trentelman
  • Thermionic electron emitter based upon the triple-junction effect
    Patent number: 6420822
    Abstract: An electron emissive cathode is designed based upon the triple-junction effect. The electron emitting cathode comprises a cathode body having an emitting surface for emitting electrons. A ferroelectric material is impregnated within the cathode body such that the ferroelectric material enhances the emission of electrons from the emitting surface. The cathode body may comprise a tungsten matrix material and the ferroelectric material may comprise a barium titanate, lithium niobate material and/or other known ferroelectrics.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: July 16, 2002
    Assignee: Northrop Grumman Corporation
    Inventor: Robert Spencer Symons