Patents Examined by Palmer C. Demeo
  • Patent number: 5311097
    Abstract: An improved avionics fluorescent lamp including a fluorescent tube having a resistive element disposed on its exterior and a terminal block for receiving an inserted fluorescent tube, the terminal block having a semi-rigid electrical contact for contacting the resistive element when the tube is inserted inside the terminal block. A plurality of connectors are disposed on the exterior of the terminal block for providing easy connection between the lamp wiring harness and the filament pins of the fluorescent tube and the resistive element by the semi-rigid connector. And a display device having the fluorescent lamp of the present invention disposed therein where the resistive element is disposed on the reflector side of the tube.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: May 10, 1994
    Assignee: Rockwell International Corporation
    Inventors: Thomas A. Mepham, Roger D. Eller
  • Patent number: 5274301
    Abstract: In a panel for a color cathode ray tube, a faceplate is so formed as to have a substantially rectangular front view and a skirt has four corner sections. Panel pin mount bases are provided on the four corner sections of the skirt, respectively and four panel pins are fixed to the mount base, respectively.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: December 28, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tohru Takahashi, Michio Nakamura, Takeshi Fujiwara, Hidenari Toge, Hidetoshi Yamazaki
  • Patent number: 5266867
    Abstract: A gas discharge tube using a tunnel effect type electron emitting device as a cathode is provided. The electron emitting device comprises a conductive metal base and a dielectric film formed preferably of a material containing MgO as a main component on the metal base. The dielectric film faces an anode and is exposed to a gas in the tube. In the cathode of this structure, discharge is effected at a relatively low DC voltage.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: November 30, 1993
    Assignee: Matsushita Electronics Corporation
    Inventor: Hiroshi Sakurai
  • Patent number: 5264760
    Abstract: To maintain a predetermined design color temperature throughout the lifet of a metal halide high-pressure discharge lamp, particularly suitable for illumination of theaters, film or television studios, the discharge vessel of the high-pressure lamp, typically made of quartz glass, contains a fill which, besides mercury, has a noble gas, cesium and dysprosium halide and a nickel halide. Optionally, gadolinium halide may be used. Per cubic centimeter of volume of the discharge vessel, 0.03 to 3 mg dysprosium, 0.002 to 0.5 mg nickel, and, optionally, 0.002 to 0.1 mg gadolinium are suitable. Suitable halogens for the halides are iodine and bromium, preferably in a mol relationship between 0.2 and 1.5. The metals, nickel and gadolinium limit the color temperature drop-off over the average lifetime of the lamp to at the most 1 K per operating hour of the lamp.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: November 23, 1993
    Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluehlampen mbH
    Inventors: Andreas Genz, Walter Kiele
  • Patent number: 5264754
    Abstract: Disclosed is a spark plug for an internal combustion engine including an annular end portion with a central electrode having an end within the annular end portion. A ground electrode extends from the annular end portion and has a portion extending over and spaced a predetermined distance above the end of the central electrode. The improvement comprises the end of the central electrode having cross-grooves therein defining four end faces and the ground electrode having diverging prongs at its end over the central electrode, a portion of each prong being over two adjacent end faces of the central electrode. Improved ignition is provided without critical manufacturing problems of prior art spark plugs.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: November 23, 1993
    Inventors: Santoso Hanitijo, Jacques L. Giguere
  • Patent number: 5260623
    Abstract: An electron-beam tube with an electron collector for an electron-beam entering the electron collector in an electron-beam direction. A plurality of large-area projections are provided for heat radiation including a funnel-shaped projection expanding in the electron-beam direction. The funnel-shaped projection includes a smaller opening which is one of directly and indirectly fastened to the collector and including an upstream projection including a surface which is first with respect to the electron-beam direction, the surface facing the arriving electron-beam and the surface being provided with low heat radiation properties. All other surfaces of the plurality of projections having high heat radiation properties higher than the low heat radiation properties. The collector and the plurality of projections being supported by a satellite as a travelling-wave tube with the electron collector radiating into space.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: November 9, 1993
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventor: Hubert Bradatsch
  • Patent number: 5256930
    Abstract: A cooled plasma source for producing ions by electrical discharge. A cooled plate is positioned in the chamber of the plasma source for blocking thermal radiation from an electron-emitting cathode. The presence of the cooled plate results in significantly decreased substrate temperatures, as compared to use of conventional plasma source apparatus. As a result, the cooled plasma source may be used for treatment of heat-sensitive plastic substrates.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: October 26, 1993
    Assignee: Commonwealth Scientific Corporation
    Inventor: William E. Hughes
  • Patent number: 5256936
    Abstract: An image display device capable of minutely setting the interval between an emitter (6) and a gate (5) with high accuracy and of being driven at a significantly reduced drive voltage with good emission uniformity. Each emitter (6) is provided in a recess in a substrate (2), so that the interval between the emitter (6) and a gate (5) is determined depending upon the thickness of the emitter (6). Thus, the interval can be readily controlled by adjusting or varying the period of time during which the film for the emitter (6) is formed, resulting in a micro-interval of the order of sub-microns between the two components being possible with high accuracy.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: October 26, 1993
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Shigeo Itoh, Teruo Watanabe, Hisashi Nakata, Norio Nishimura, Junji Itoh, Seigo Kanemaru
  • Patent number: 5256941
    Abstract: A color display tube is set forth comprising a color selection electrode which is suspended from supporting elements in the corners of the display window of the color display tube. The suspension elements used to suspend the color selection electrode from the supporting elements comprise a resilient element which encloses an angle .alpha. with the normal to the center of the display window. The angle .alpha. (in degrees) is defined by:.alpha.= 90-x/2- .delta.where x is the maximum deflection angle of the electrons in the color display tube, and6.5<.delta.<1.5.In the case of a tube,<.alpha.< . By virtue thereof, the effect of overall doming is substantially equal to the effect of ambient doming, as a result of which the average picture quality is improved.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: October 26, 1993
    Assignee: U.S. Philips Corporation
    Inventors: Johannes H. N. Gijrath, Theodoor C. A. Hens
  • Patent number: 5256934
    Abstract: Picture display device comprising a display tube with an electron gun having a hollow tubular structure with an inner surface on which a resistance structure of a material having a high electrical resistance is provided, which structure constitutes a focusing lens. The resistance structure is connected to at least two axially spaced electric contacts for connecting an anode voltage and at least one electric contact located in between for applying a focusing voltage. An electrode means of low-ohmic material for controlling the focusing lens by means of a dynamic correction signal is arranged in the region of the connection for the focusing voltage. Upon energization, the low-ohmic electrode means particularly exercises a non-rotationally symmetrical effect on the electron beam.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: October 26, 1993
    Assignee: U.S. Philips Corporation
    Inventors: Jeroen Van Engelshoven, Ger-Wim J. Goorhuis, Gerardus J. A. Hellings, Gerardus A. H. M. Vrijssen, Tjerk G. Spanjer
  • Patent number: 5254906
    Abstract: An electron multiplier tube including a grid type of plural dynode arrays arranged in a first direction with a multistage structure for successively multiplying electrons incident thereto and an anode provided below the multistage structure of dynode arrays for collecting the multiplied electrons to output an amplified electrical signal, each of the dynode arrays including plural rod-shaped dynode elements arranged in a second direction and a mesh electrode provided over each of the dynode arrays for providing an equipotential, wherein the multistage structure of dynode arrays includes at least one group of neighboring dynode arrays whose dynode elements are arranged so as to be aligned with one another in the first direction without displacement. Each of the dynode elements has a substantially isosceles trapezoid section, both side legs of the trapezoid being slightly inwardly curved to effectively receive the incident electrons which have been emitted from a dynode array at an upper stage.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: October 19, 1993
    Assignee: Hamamatsu Photonics K.K.
    Inventor: Suenori Kimura
  • Patent number: 5252886
    Abstract: The high pressure discharge lamp has an elongate discharge vessel of ceramic material. The outside surface area of the wall of the discharge vessel is strongly increased by a relief. Since a higher heat flow from the discharge vessel to the environment is possible, the lamp can withstand a higher load. In this way, lamp properties such as luminous flux, color rendering index and/or color temperature can be improved.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: October 12, 1993
    Assignee: U.S. Philips Corporation
    Inventors: Max L. P. Renardus, Theodorus P. P. Kandelaars, Samuel A. Carleton, Cornelis A. J. Jacobs
  • Patent number: 5252889
    Abstract: A color CRT with a first bimetal correction means provided between the inner wall of the screen panel and the shadow mask for correcting the mislanding of the electron beams due to the thermal expansion of the shadow mask, and a second bimetal correction means provided between the lower end portion of the skirt of the shadow mask and the inner wall of the mask frame for quickly correcting the initial doming of the shadow mask, thereby correcting the mislanding occurring in the beginning stage of operating the color CRT.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: October 12, 1993
    Assignee: GoldStar Co., Ltd.
    Inventor: Woong B. Choi
  • Patent number: 5250875
    Abstract: An electron gun for a cathode ray tube arranged in sequence following by a cathode, a first grid electrode, a second grid electrode, a first accelerating/focusing electrode, and a second accelerating/focusing electrode from the lower on the axis of the cathoderay tube, comprises a third grid electrode assembly including an inter-grid assembly installed between the lower electrode and the upper electrode which is made into the first accelerating/focusing electrode, a main electrostatic focusing lens mounted between the fourth grid electrode to be considered as the second accelerating/focusing electrode and the upper electrode of the third grid electrode assembly and other electrostatic focusing lens formed between the inter-grid assemblies which is installed in the third grid electrode assembly, in which the drift space of the electron beam is secured in the electron gun and the focusing electrode of the main electrostatic focusing electrode, which is applied to a lower voltage, is devided into two to get the
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: October 5, 1993
    Assignee: GoldStar Co., Ltd.
    Inventor: Nam J. Kho
  • Patent number: 5247226
    Abstract: An organic electroluminescent device having an anode, an organic hole injection transport layer, an organic luminescent layer and a cathode formed sequentially in this order, wherein the organic hole injection transport layer contains a metal complex and/or a metal salt of an aromatic carboxylic acid.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: September 21, 1993
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Yoshiharu Sato, Shigenori Otsuka
  • Patent number: 5247227
    Abstract: A plasma display device is disclosed having a number of anode pairs disposed on a front panel. Barrier ribs are disposed on the front panel spaced at predetermined intervals. Each anode pair includes odd and even anodes. The odd and even anodes of a given anode pair are partially buried in a corresponding rib.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: September 21, 1993
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventor: Nam-sin Park
  • Patent number: 5243251
    Abstract: This invention provides an improved layer coated on the outer surface of the envelope of high intensity discharge lamps, halogen lamps and so on. The overcoated layer is provided for preventing glass pieces of the envelope from scattering when the glass envelope is broken. Therefore the improved and strengthened layer comprises a fluorocarbon polymer containing metal oxide grains dispersed therein. The metal oxide grains are dispersed in the fluorocarbon polymer since the overcoated layer is heated at more than C. Further, for the purpose of strengthening the overcoated layer, the overcoated layer has an even density of the metal oxide grains in the fluorocarbon polymer. The even density of the metal oxide grains in the fluorocarbon polymer is obtained only by this invention of the coating method that includes a electrostatic coating step.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: September 7, 1993
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Shinji Inukai, Satoshi Iwasawa, Kazuo Takita, Katsusuke Uchino
  • Patent number: 5239225
    Abstract: A spark plug for an internal combustion engine includes a metallic shell within which a tubular insulator is placed, a center electrode is provided within the insulator to form a spark gap between a front end of the center electrode and an outer electrode extending from the metallic shell. First and second stepped portions are provided near a front portion of the center electrode to form a clearance between an outer wall of the center electrode and an inner wall of the insulator. The stepped portions have a progressively decreasing diameter toward the front end of the center electrode. A tapered portion is provided at an inner wall of the insulator by bevelling a front open end of the insulator. This maintains high insulation of the insulator with significantly low carbon deposit, thus avoiding ignition failure of the spark plug.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: August 24, 1993
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Toru Moriya, Tunekazu Enomoto, Mitsutaka Yoshida
  • Patent number: 5239231
    Abstract: A connector for connecting the filaments of a dual filament halogen lamp to a common ground lead includes two provisions for clamping the connector to ends of the first and second filament and a central portion for connection to the common ground in a dual filament halogen lamp.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: August 24, 1993
    Assignee: Cooper Industries, Inc.
    Inventor: Robert A. Grunder
  • Patent number: 5235247
    Abstract: The discharge tube consists of an electrically insulating cylindrical body and a pair of electrodes disposed facing each other in the cylindrical body, and is sealed with an inert gas. An activation layer of a silicate compound of alkaline metal is formed over at least a part of the inner wall surface and the electrode surface, other than the discharge surface, that are exposed to the sealed gas. This activation layer helps keep the discharge inception voltage stable even when the discharge frequency changes greatly, which in turn extends the longevity of the discharge tube.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: August 10, 1993
    Assignee: Yazaki Corporation
    Inventors: Masataka Shishido, Takashi Sato, Takahisa Suzuki, Tetsuya Mitani, Hiromitsu Tsuchiya