Foraminous Electrodes (e.g., Grids) Or Shields Patents (Class 313/348)
  • Patent number: 10308777
    Abstract: Pyrolized organic layers and conductive prepregs made therewith are provided.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: June 4, 2019
    Assignee: Henkel IP & Holding GmbH
    Inventors: Raymond S. Wong, Huabing Zheng
  • Patent number: 9640369
    Abstract: A plasma generation process that is more optimized for vapor deposition processes in general, and particularly for directed vapor deposition processing. The features of such an approach enables a robust and reliable coaxial plasma capability in which the plasma jet is coaxial with the vapor plume, rather than the orthogonal configuration creating the previous disadvantages. In this way, the previous deformation of the vapor gas jet by the work gas stream of the hollow cathode pipe can be avoided and the carrier gas consumption needed for shaping the vapor plume can be significantly decreased.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: May 2, 2017
    Assignee: University of Virginia Patent Foundation
    Inventors: Haydn N. G. Wadley, Goesta Mattausch, Henry Morgner, Frank-Holm Roegner
  • Patent number: 8895874
    Abstract: Thin indium-less “optically porous” layers adapted to replace traditional ITO layers are provided herein. A thin metalized film adapted to carry an electrical charge can include a dense pattern of small openings to allow the transmission of light to or from an underlying semiconductor material. The pattern of openings can create a regular or irregular grid pattern of low aspect ratio fine-line metal conductors. Creation of this optically porous metalized film can include the printing of a catalytic precursor material, such as palladium in solution in a pattern on a substrate, drying or curing the catalytic precursor, and the deposition of a thin layer of metal, such as copper on the dried precursor to form the final conductive and optically porous film.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: November 25, 2014
    Assignee: Averatek Corp.
    Inventors: Sunity Kumar Sharma, Alex Newsom Beavers, Jr., Thomas Furst
  • Publication number: 20140010347
    Abstract: A mesh electrode adhesion structure includes: a substrate, and an opening defined in the substrate; a mesh electrode on the substrate, and a first combination groove defined in the mesh electrode; and an adhesion layer between the substrate and the mesh electrode. The mesh electrode includes: a mesh region corresponding to the opening defined in the substrate, and an adhesion region in which the first combination groove exposes the adhesion layer.
    Type: Application
    Filed: May 14, 2013
    Publication date: January 9, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Do-yoon KIM, Yong-chul KIM, Il-hwan KIM, Shang-hyeun PARK, Tae-won JEONG
  • Patent number: 8536775
    Abstract: A field emission lamp, capable of increasing the number of electron emitting points thereof, and of increasing the uniformity and the intensity of the light output therefrom by installing a mesh cathode is disclosed. The field emission lamp comprises: an outer shell having an inner surface, a mesh cathode unit surrounded by the outer shell, an anode unit formed on a portion of the inner surface of the outer shell, and a phosphor layer formed on a portion of the anode unit. Wherein, the light generated by the phosphor layer, due to the bombardment of the electrons, can output from the field emission lamp of the present invention, through the outer shell where none of the anode unit is formed thereon.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: September 17, 2013
    Assignee: Tatung Company
    Inventor: Tzung-Han Yang
  • Patent number: 8350459
    Abstract: A method for manufacturing a field electron emission source includes: providing an insulating substrate; patterning a cathode layer on at least one portion of the insulating substrate; forming a number of emitters on the cathode layer; coating a photoresist layer on the insulating substrate, the cathode layer and the emitters; exposing predetermined portions of the photoresist layer to radiation, wherein the exposed portions are corresponding to the emitters; forming a mesh structure on the photoresist layer; and removing the exposed portions of photoresist layer. The method can be easily performed and the achieved the field electron emission source has a high electron emission efficiency.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: January 8, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Li Qian, Liang Liu, Shou-Shan Fan
  • Patent number: 8324590
    Abstract: A chopper for a particle beam comprises an annular guiding element and an element for controlling the intensity of the particle beam. The control element is supported on the guiding element so that at least one point under consideration on the control element can revolve along the circumference of the guiding element. Mounting along a circumference allows for accommodation of considerably higher disturbance torque than mounting on a rotational axle, using the same bearing force. Furthermore, it is possible to dispense with the entire rotational axle, and the control element can be designed, for example, as a ring. This brings about considerable weight savings as compared to chopper wheels according to the prior art, which accordingly enables higher circumferential speeds and therefore higher modulation frequencies for the particle beam, while at the same time increasing operational safety.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 4, 2012
    Assignee: Forschungszentrum Juelich GmbH
    Inventors: Walter Renftle, Hans Kaemmerling, Michael Prager, Magdalena Prager, legal representative
  • Publication number: 20120049721
    Abstract: A metal gate electrode for a field emission device includes a plurality of metal strips. Some of the metal strips are arranged substantially along a first direction, and other metal strips are arranged substantially along a second direction substantially perpendicular to the first direction. The metal strips are connected to each other to define a plurality of rectangular apertures through which electrons can pass.
    Type: Application
    Filed: July 1, 2011
    Publication date: March 1, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: HAI-YAN HAO, SHOU-SHAN FAN
  • Publication number: 20120046597
    Abstract: The invention relates to an electrode arrangement (1) for generating a non-thermal plasma, comprising: a layer-shaped first electrode (2) made of an electrically conductive material, a layer-shaped second electrode (4) made of an electrically conductive material, wherein the second electrode (4) is electrically insulated from the first electrode (2), and a dielectric barrier (3) being arranged between the first electrode (2) and the second electrode (4), so that the non-thermal plasma is generated by a dielectric barrier discharge. The inventive electrode arrangement is characterized in that at least one of the first electrode (2) and the second electrode (4) comprises several perforations which are distributed over the electrode.
    Type: Application
    Filed: March 13, 2009
    Publication date: February 23, 2012
    Applicant: Max-Planck-Gesellschaft Zur Forderung der Wissenschaften e.V
    Inventors: Gregor Eugen Morfill, Bernd Steffes, Tetsuji Shimizu
  • Publication number: 20110306924
    Abstract: There are provided an atmospheric low-temperature micro plasma jet device for bio-medical application comprising an electrode used as an anode, a gas injection pipe used as a cathode, a porous insulating material, a protection pipe, and an insulating case and manufacturing method therefor using micromachining such as microelectromechanical systems (MEMS) in such a way that a diameter of micro electrodes where plasma is jetted is several tens micrometers or less.
    Type: Application
    Filed: September 17, 2009
    Publication date: December 15, 2011
    Inventors: Sang Sik Yang, Kang II Kim, Geun Young Kim
  • Patent number: 7864925
    Abstract: A cathode has a cathode head in which is arranged a surface emitter is arranged that emits electrons upon the application of a heating voltage. At least one electrically conductive barrier plate that is galvanically separated from the surface emitter extends up to the surface emitter. This cathode has a longer lifespan, a high electron emission and a good blocking capability.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: January 4, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventor: Wolfgang Kutschera
  • Patent number: 7855373
    Abstract: An electron gun (1) includes an emitter (2), a tubular support (3) and an adaptor (4) for receiving the emitter. The adaptor includes a tapered plugging surface (7) and the tubular support includes a correspondingly tapered seating surface (9) for receiving the plugging surface. The plugging surface and seating surface have conical profiles which help to position the adaptor concentrically with the support.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: December 21, 2010
    Assignee: Nanobeam Limited
    Inventor: Tao Zhang
  • Publication number: 20090236962
    Abstract: The Present invention provides an organic EL display and a lighting device having high efficiency. The organic EL display comprises a substrate, a pixel-driving circuit unit, and pixels arranged in the form of a matrix on the substrate. The pixel comprises a light-emitting part, and the light-emitting part is composed of a first electrode placed near to the substrate, a second electrode placed far from the substrate, and at least one organic layer placed between the first and second electrodes. The second electrode has a metal electrode layer having a thickness of 10 nm to 200 nm, and the metal electrode layer comprises a metal part and plural openings penetrating through the layer. The metal part is seamless and formed of metal continuously connected without breaks between any points therein.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 24, 2009
    Inventors: Akira FUJIMOTO, Koji Asakawa, Tsutomu Nakanishi, Eishi Tsutsumi, Ryota Kitagawa
  • Patent number: 7586251
    Abstract: An electron emission device includes: a substrate; first and second electrodes insulated from each other and having a predetermined shape on the substrate, at least one of the first and second electrodes being formed with a fine mesh pattern; and an electron emission region formed on the substrate and connected to one of the first and second electrodes. Furthermore, an electron emission display includes: first and second substrate arranged opposite to each other; first and second electrodes insulated from each other and having a predetermined shape on the first substrate, at least one of the first and second electrodes being formed with a fine mesh pattern; an electron emission region formed on the first substrate and connected to one of the first and second electrodes; and an image displaying portion including an anode electrode and a fluorescent layer arranged on the second substrate.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: September 8, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyu-Won Jung, Il-Hwan Kim
  • Patent number: 7569835
    Abstract: The present invention relates generally to grids for gating a stream of charged particles and methods for manufacturing the same. In one embodiment, the present invention relates to a Bradbury-Nielson gate having transmission line grid elements. In one embodiment is a feed structure for a gating grid where a drive source is coupled to a feeding transmission line with the same geometry as the chopper and continues with the same geometry to a termination transmission line. Also included is a method for fabricating a gate for charged particles which includes micromachining at least two gate elements from at least one wafer, wherein each gate element includes at least one grid element; metalizing the grid elements; and assembling the gate elements such that the grid elements of the gate elements are interleaved, thereby forming a Bradbury Nielson gate.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: August 4, 2009
    Assignees: Stillwater Scientific Instruments, University of Maine
    Inventors: Brian G. Frederick, Lawrence J. LeGore, Rosemary Smith, Scott Collins, Robert H. Jackson, III
  • Patent number: 7358593
    Abstract: A grid structure and method for manufacturing the same. The grid is used for gating a stream of charged particles in certain types of particle measurement instruments, such as ion mobility spectrometers and the like. The methods include various microfabrication techniques for etching and/or depositing grid structure materials on a silicon substrate.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: April 15, 2008
    Assignees: University of Maine, Stillwater Scientific Instruments
    Inventors: Rosemary Smith, Scott Collins, Brian G. Frederick, Lawrence J. LeGore
  • Patent number: 7176452
    Abstract: A beam modulation device gate is constructed from a silicon material, such as a silicon layer on an silicon on insulator wafer. The device further comprises a set of electrical contacts on the layer. The layer defines a set of electrically conducting silicon material fingers forming an array, wherein each of at least some of the fingers is connected electrically to one of the electrical contacts. The gate may be used in a mass or ion mobility spectrometer. Where the gate is constructed from a silicon on insulator wafer, an insulator layer supports the silicon layer and a handle layer supports the insulator layer. When predetermined electrical potentials are applied to the electrical contacts, at least some of the fingers will be substantially at said predetermined electrical potentials to modulate a beam of charged particles that passes through said array of fingers.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: February 13, 2007
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Ignacio A. Zuleta, Richard N. Zare
  • Patent number: 7166008
    Abstract: Method of curing polymeric compositions using light from an electroluminescent light source. An electroluminescent wire light can be embedded into a curable polymer or adhesive composition and used for curing in circumstances in which UV or visible light from conventional lamps cannot reach the polymer or adhesive to be cured. It may also be used to cure polymer or adhesive coatings of unusual or irregular shapes. An electroluminescent wire light can be embedded in a curable adhesive or polymer compound around an irregular shape of boat hull components, and the emitted light used to cure the adhesive or polymer compound to bond the boat hull components.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: January 23, 2007
    Assignee: 3M Innovative Properties Company
    Inventor: Robert J. Boettcher
  • Patent number: 7005782
    Abstract: A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputter deposits form on the grid electrodes and mounting ring. The grid electrodes are mounted to the mounting ring with slots and fastening pins that allow sliding thermal expansion and contraction between the grid electrodes and mounting ring while substantially maintaining alignment of grid openings and spacing between the grid electrodes. Asymmetric fastening pins facilitate the sliding thermal expansion while restraining the grid electrodes. Electrical contactors supply and maintain electrical potentials of the grid electrodes with spring loaded sliding contacts, without substantially affecting the thermal characteristics of the grid electrodes.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 28, 2006
    Assignee: VEECO Instruments, Inc.
    Inventors: Viktor Kanarov, Alan V. Hayes, Rustam Yevtukhov, Daniel Yakovlevitch
  • Patent number: 6856080
    Abstract: A vacuum tube having its anode/collector coated with carbonized resin plus pyrocarbon material to reduce out-gassing and secondary electron emission and the method of coating the anode/collector.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: February 15, 2005
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Donald A. Shiffler, Jr., Michael D. Haworth
  • Patent number: 6774550
    Abstract: A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputter deposits form on the grid electrodes and mounting ring. The grid electrodes are mounted to the mounting ring with slots and fastening pins that allow sliding thermal expansion and contraction between the grid electrodes and mounting ring while substantially maintaining alignment of grid openings and spacing between the grid electrodes. Asymmetric fastening pins facilitate the sliding thermal expansion while restraining the grid electrodes. Electrical contactors supply and maintain electrical potentials of the grid electrodes with spring loaded sliding contacts, without substantially affecting the thermal characteristics of the grid electrodes.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: August 10, 2004
    Assignee: Veeco Instruments, Inc.
    Inventors: Viktor Kanarov, Alan V. Hayes, Rustam Yevtukhov, Daniel Yakovlevitch
  • Patent number: 6664545
    Abstract: Bradbury-Nielson gates for the modulation of beams of charged particles, particularly ion beams in mass spectrometry, have been produced with an adjustable wire spacing down to 0.075 mm or a smaller spacing. The gates are robust, they can be fabricated in less than 3 hours, and the method of production is reproducible. In time-of-flight mass spectrometers, fine wire spacing leads to improvements in mass resolution and modulation rates. Gates that were produced using this new method have been installed in a Hadamard transform time-of-flight mass spectrometer in order to demonstrate their utility.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: December 16, 2003
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Joel R. Kimmel, Friedrich Engelke, Richard N. Zare
  • Patent number: 6661166
    Abstract: A cathode includes emitter tips provided on a substrate, a gate electrode with an electric field formed between the gate electrode and the emitter tips, and terminals and leads for supplying voltages to the emitter tips and the gate electrode, respectively. A shield electrode further is provided between the cathode and a control electrode, and the shield electrode has a cylindrical projecting portion projecting toward the cathode, through which electron beams pass. The disturbance of an electric field by the leads influences the electron beams; however, this can be prevented by the projecting portion. Because of this, even if the size of the cathode is reduced, the distortion of an electron beam spot on a phosphor screen can be reduced. As a result, a cathode-ray tube with high resolution can be provided at a low cost.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: December 9, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahide Yamauchi, Takashi Itoh, Koji Fujii, Keisuke Koga, Toru Kawase
  • Patent number: 6652923
    Abstract: An electron-emitting source includes a substrate and a coating film. The substrate is made of a material containing a metal serving as a growth nucleus for nanotube fibers as a main component, and has a plurality of through holes. The coating film is constituted by nanotube fibers formed on a surface of the substrate and wall surfaces of the through holes. A method of manufacturing an electron-emitting source is also disclosed.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: November 25, 2003
    Assignees: ISE Electronics Corporation, Nihon Shinku Gijutsu Kabushiki Kaisha
    Inventors: Sashiro Uemura, Takeshi Nagasako, Junko Yotani, Hirohiko Murakami
  • Patent number: 6635978
    Abstract: A grid for an electron tube with an axial beam which includes an apertured part through which the electrons of the beam are intended to pass. The grid is in the form of a bell and is made of a single material. The apertured part is located at the top of the bell but is placed in the bottom of a hollow so that the electrons passing through the grid around its periphery are focused onto the axis. Such a grid may find particular application to IOT-type tubes.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: October 21, 2003
    Assignee: Thomson Tubes Electroniques
    Inventor: Guy Clerc
  • Publication number: 20030146392
    Abstract: Bradbury-Nielson gates for the modulation of beams of charged particles, particularly ion beams in mass spectrometry, have been produced with an adjustable wire spacing down to 0.075 mm or a smaller spacing. The gates are robust, they can be fabricated in less than 3 hours, and the method of production is reproducible. In time-off-light mass spectrometers, fine wire spacing leads to improvements in mass resolution and modulation rates. Gates that were produced using this new method have been installed in a Hadamard transform time-of-flight mass spectrometer in order to demonstrate their utility.
    Type: Application
    Filed: August 28, 2002
    Publication date: August 7, 2003
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Joel R. Kimmel, Friedrich Engelke, Richard N. Zare
  • Patent number: 6593579
    Abstract: A radio frequency (RF) modulated electron gun includes a cathode, electrically coupled to operate as a source of charged particles, and a grid, positioned apart from the cathode. The grid and the cathode are electrically coupled to a grid voltage source and to a RF source. The grid voltage source places the grid at a first potential, and the RF source places the grid at a second potential selected to produce groups of the charged particles. The groups of charged particles are produced with each period of a signal received from the RF source.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: July 15, 2003
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventor: Kenneth Whithman
  • Patent number: 6590324
    Abstract: A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputter deposits form on the grid electrodes and mounting ring. The grid electrodes are mounted to the mounting ring with slots and fastening pins that allow sliding thermal expansion and contraction between the grid electrodes and mounting ring while substantially maintaining alignment of grid openings and spacing between the grid electrodes. Asymmetric fastening pins facilitate the sliding thermal expansion while restraining the grid electrodes. Electrical contactors supply and maintain electrical potentials of the grid electrodes with spring loaded sliding contacts, without substantially affecting the thermal characteristics of the grid electrodes.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: July 8, 2003
    Assignee: Veeco Instruments, Inc.
    Inventors: Viktor Kanarov, Alan V. Hayes, Rustam Yevtukhov, Daniel Yakovlevitch
  • Publication number: 20030048059
    Abstract: A technique for providing a grid for a gate such as utilized in gating a stream of ions or other particles in a spectrometer instrument. The grid of wires may, for example, be a so-called Bradbury-Nielson Gate that consists of a set of two electrically isolated sets of equally spaced wires that lie substantially in the same plane and alternate in potential. The method utilized to provide is to first fabricate a frame of an insulating substrate having a hole and depositing metal film patterns such that conductive portions are formed on either side of the hole. Conductive portions on either side form a series of terminating pads on the portion of the substrate closest to the hole and a bus bar. Grid wires are then formed by stretching a section of wire with desired constant tension across the hole and bonding the ends of the wire to a respective one of the pads on one side and bus bar on the other side. The method provides a rapid, inexpensive way to fabricate such modulating devices.
    Type: Application
    Filed: June 7, 2002
    Publication date: March 13, 2003
    Applicant: Stillwater Scientific Instruments
    Inventors: Nicholas LeCursi, Lawrence J. LeGore, Robert H. Jackson, C. Bronson H. Crothers, Peter H. Kleban, Brian G. Frederick
  • Patent number: 6524454
    Abstract: The present invention is an integrated screen comprising a screen portion having openings and an integral protector edge disposed about the periphery of the screen portion. This integrated screen protector edge can be utilized individually as the membrane support/flow field in an electrochemical cell or in conjunction with one or more subsequent screen layers. When utilized with subsequent screen layers, the integrated screen protector edge is disposed adjacent to and in intimate contact with the membrane assembly.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: February 25, 2003
    Assignee: Proton Energy Systems, Inc.
    Inventors: Robert H. Byron, Jr., Trent M. Molter, Mark E. Dristy
  • Patent number: 6072269
    Abstract: A ceramic member has a flat or curved ceramic plate having a plurality of minute through holes of a maximum pore diameter of 150 .mu.m or less, and having electrodes installed on one surface of the plate. The ceramic member controls the ejection of ions carrying either positive or negative charge from the minute through holes by switching the sign of charge carried by the electrodes. The minute through holes are tapered toward the side where ions are ejected. The ceramic member gives an improved property of ejecting charged particle from minute through holes while maintaining high mechanical strength and productivity.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: June 6, 2000
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Tsutomu Nanataki, Hisanori Yamamoto, Takashi Oguchi
  • Patent number: 5920151
    Abstract: An electron-emitting device contains an electron focusing system (37 or 37A) formed with a base focusing structure (38 or 38A), a focus coating (39 or 39A), and an access conductor (106 or 116). The focus coating overlies the base focusing structure and extends into a focus opening (40). The access conductor is electrically coupled to the lower surface of the focus coating. A potential for controlling the focusing of electrons that travel through the focus opening is provided to the focus coating via the access conductor. The focus coating is typically formed by an angled deposition technique.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: July 6, 1999
    Assignee: Candescent Technologies Corporation
    Inventors: Roger W. Barton, Stephanie J. Oberg, N. Johan Knall, Christopher J. Spindt, Duane A. Haven
  • Patent number: 5783900
    Abstract: A broad-beam high energy electron accelerator has an electron injection section arranged for increased current density with greater uniformity and higher transmission through the foil exit window. A plurality of cathode rods are disposed in a transverse plane and spaced at about 2.4 cm, and a reflector plate behind the cathode rods is biased negative relative thereto. A planar control grid is disposed distal of said cathode rods and a screen grid is disposed parallel to and distal of the control grid. Field-shaping wires are disposed in a plane parallel to the plane of the cathode rods and between the same and the reflector plate, with the respective field-shaping wires being disposed parallel to said rods and midway between them. The same positive bias (e.g., 11 kV) is applied to both the control grid and the field-shaping wires.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: July 21, 1998
    Assignee: Virginia Accelerators, Inc.
    Inventors: Stanley Humphries, Jr., Ralph D. Genuario
  • Patent number: 5550428
    Abstract: The present invention provides a color selecting mechanism for a cathode ray tube in which an enough area of an effective screen area of a color selecting electrode can be ensured. A frame (1) is constituted by a pair of opposite long-side frames (3) and a pair of opposite short-side frames (4). A color selecting electrode (2) is stretched over the upper surfaces (3b) of the long-side frames (3). The frame (1) is formed by the integral molding. The end portions of the upper surfaces (3b) side of the long-side frames (3) are formed into a straight line as if they were cut down. The lower surfaces of connection portions between the long-side frames (3) and the short-side frames (4) are disposed on the same plane. The height of the long-side frames (3) from this plane is formed so as to be higher than the height of the short-side frames (4).
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: August 27, 1996
    Assignee: Sony Corporation
    Inventors: Hisao Kume, Yoshiro Horiuchi
  • Patent number: 5448883
    Abstract: Carbon-carbon elements for ion optics sets are thermomechanically stable under the extreme temperature changes that are experienced in ion thrusters. The elements described include screen and accelerator grids and methods of producing such grids. The described elements are thermomechanically stable, lightweight, and resistant to sputtering.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: September 12, 1995
    Assignee: The Boeing Company
    Inventors: Jere S. Meserole, Jr., Daniel E. Hedges, Michael E. Rorabaugh
  • Patent number: 5391433
    Abstract: A carbon material for electrodes which is a graphite/glass like carbon composite material having a structure in which the crystals of the graphite are oriented in one direction in the matrix of the glass like carbon so as to possess an electrode reaction activity inherent in the graphite crystals, having a maximum pore diameter of 150 .ANG. or less, and having electrolyte non-penetrative properties substantially corresponding to those of the glass like carbon; and a process for preparing a carbon material for electrodes which comprises the steps of highly dispersing, composing and orienting a graphite fine powder of the sufficiently grown crystals in an organic substance which can leave a glass like and less graphitizable carbon when calcined in a non-oxidizing atmosphere, and then calcining and carbonizing the composition.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: February 21, 1995
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Takamasa Kawakubo, Yoshihisa Suda
  • Patent number: 5272412
    Abstract: An innovative method is proposed for the production of ion extraction grids, comprising the stages of:disposing a plurality of wires or metallic filaments in a lattice structure;coating said structure with a layer of boron.The coating with boron may take place by thermal reduction of boron trichloride in a hydrogen atmosphere. This makes it possible to produce grids at low cost and with high resistance to sputtering, suitable for use for the extraction, focusing and acceleration of the beam in ion sources for industrial and space applications.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: December 21, 1993
    Assignee: Proel Tecnologie S.p.A.
    Inventor: Gianfranco Cirri
  • Patent number: 5225735
    Abstract: An electron tube with concentric, cylindrical electrodes has at least one meshed type of grid, a mesh being defined by several rods in contact by their ends, each point of contact forming a node. In order to limit the grid current, the surface area of a node is reduced. Only three rods leave each node. The meshes are hexagonal.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: July 6, 1993
    Assignee: Thomson Tubes Electroniques
    Inventor: Michel-Pierre Tardy
  • Patent number: 5214349
    Abstract: A color selection electrode device mounts: a color selection electrode composed of filaments for regulating the position which an electron beam of the cathode ray tube reaches on a pair of U-shaped frame bodies between which the color selection electrode is stretched. Support pieces are provided for connecting both end portions of the pair of frame bodies and holding the frame bodies at a predetermined space. The color selection electrode is a metal electrode which is composed of, for example, a multiplicity of filaments. The support pieces are composed of an elastic material and are bent due to the load which is applied to the frame bodies, thereby shortening the distance between the frame bodies. In this state, the color selection electrode is stretched between the frame bodies and both ends thereof are welded to the frame bodies. Thereafter, when the load is removed, a predetermined tension is uniformly applied to the color selection electrode by the elastic restoring force.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: May 25, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeki Sakata, Akito Yamamoto, Mizuki Murata
  • Patent number: 5206565
    Abstract: In a controllable high-power electron tube in the form of a tetrode, the anode direct voltage is reduced to less than 10 kV with an anode efficiency of greater than 80%. The tube includes coaxially arranged electrodes including a cylindrical indirectly heated full walled matrix cathode containing BaO, a cylindrical control grid, a cylindrical screen grid and an anode, where the spacing between the control grid and the cathode and the spacing between the control grid and the screen grid is less than 1 mm. Such a tube can be used for achieving AM broadcast transmitters which are distinguished by a compact construction, the overall efficiency remaining largely unchanged.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: April 27, 1993
    Assignee: Asea Brown Boveri Ltd.
    Inventors: Fritz Lussi, Hans-Gunter Mathews, Werner Rohrbach
  • Patent number: 4975617
    Abstract: Flat and slightly convex pyrolytic graphite grid electrodes are very suitable for use in electric discharge tubes, are example in ion sources, cathode-ray tubes, travelling waveguides and transmitter tubes. It has proved possible to manufacture such electrodes by manufacturing the grid and the grid holder of the pyrolytic graphite electrode from one piece of pyrolytic graphite. Such integral grid electrodes have very good mechanical and thermal properties.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: December 4, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Aart A. Van Gorkum, Leopold C. M. Beirens, Bernhard Lersmacher
  • Patent number: 4890034
    Abstract: A thyratron includes a grid structure in which a grid element has a plurality of apertures therethrough, each of the apertures comprising two arcuate portions at different distances from the center of the grid which are connected by a radial portion. Thus a large grid area may be provided without detrimentally affecting voltage hold-off, jitter or mechanical soundness.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: December 26, 1989
    Assignee: English Electric Valve Company Limited
    Inventors: Hugh Menown, Robert E. Baker, Leonard R. Cullum
  • Patent number: 4866331
    Abstract: An improved lamp base having an eyelet with prongs and a base and apertures between the prongs and the base into which part of the glass insulator hardens to interlock the insulator with the eyelet.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: September 12, 1989
    Assignee: North American Philips Corporation
    Inventor: Phillip A. Livera
  • Patent number: 4795941
    Abstract: A transparent panel for a display device of cathode-ray tube type comprising, an electromagnetic shielding web defined by the wires made of an electromagnetic shielding material, and the transparent panel members sustaining said electromagnetic shielding web to shield the radiated electromagnetic waves so as to protect the observer from the effects of the waves.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: January 3, 1989
    Assignee: Riken EMC Co., Ltd.
    Inventor: Kennichi Noda
  • Patent number: 4752715
    Abstract: A television camera tube comprising an evacuated envelope enclosing an electron gun. The electron gun has, in the direction of propagation of the generated electron beam, a cathode, a grid, an anode and a cylindrical electrode. The cylindrical electrode has a diaphragm. The anode has a portion that extends substantially perpendicularly to the electron beam and includes an aperture. A first metal foil is provided on the side of the anode toward the target. The metal foil covers the aperture of the anode, but has an aperture for the electron beam. The diameter of the aperture in the foil is no more than 0.15 mm and no less than the diameter of the electron beam. A second metal foil is provided on the anode on the other side thereof. The second foil also covers the aperture of the anode. The second foil has an aperture for the electron beam. The diameter of the aperture in the second foil is smaller than the diameter of the aperture in the first metal foil, but is not less than the diameter of the electron beam.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: June 21, 1988
    Assignee: U.S. Philips Corp.
    Inventors: Jacob van den Berg, Erich E. Himmelbauer
  • Patent number: 4739213
    Abstract: In an electron tube comprising a pyrolytic graphite electrode which is a hollow body of revolution and which has an open end at which it is secured to a substantially coaxially cylindrical electrode support, a substantially cylindrical sleeve of a carbide-forming metal is interposed radially between the end of the pyrolytic graphite electrode and the electrode support. One end of the sleeve is fused around the end of the electrode and the other end is secured to the grid support. Thus, the pyrolytic graphite electrode is secured in an uncomplicated and efficient way with a satisfactory dielectric strength and without affecting the electric field of the tube in operation.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: April 19, 1988
    Inventors: Antonius M. M. Spitters, Henricus A. J. M. Knols
  • Patent number: 4737680
    Abstract: An improved grid arrangement is shown for a gridded electron gun wherein the control grid and/or shadow grid is provided with tapering grid vanes which reduce the amount of voltage required to cut off the electron beam. Alternately, a fewer number of grid vanes may be utilized to accomplish the same cutoff of the electron beam thus reducing the loading on the cathode and improving the transmission of the electron beam.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: April 12, 1988
    Assignee: Litton Systems, Inc.
    Inventors: Richard B. True, Donald E. Laycock
  • Patent number: 4728852
    Abstract: The present invention concerns a device for fixing the skirt of a grid made of pyrolytic graphite to the base of an electron tube, the fixation device being constituted by a ring fixed onto the base of the tube against which is maintained the skirt of the grid by means of abutments.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: March 1, 1988
    Assignee: Thomson-CSF
    Inventor: Roger Hoet
  • Patent number: 4723089
    Abstract: A novel color selection electrode assembly is utilized in screening a pattern of phosphor areas upon the faceplate of a color cathode ray tube. The faceplate, which is formed of a material having a predetermined temperature coefficient of expansion, has registration affording means. The aforesaid assembly comprises an auxiliary mount formed of a material having a temperature coefficient of expansion greater than that of the faceplate and has a central opening of such span as to enable the mount to surround the periphery of the faceplate. Index bosses, cooperable with the faceplate registration affording means, are detachably secured to the mount. A planar metal foil having a predetermined pattern of apertures and formed of a material having a temperature coefficient of expansion not greater than that of the mount is secured to the mount.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: February 2, 1988
    Assignee: Zenith Electronics Corporation
    Inventor: Kazimir Palac
  • Patent number: 4695760
    Abstract: Self-aligned double grids for vacuum tubes and methods for making such double grids are provided. The self-aligned double grids are especially suitable for improving the efficiency and performance characteristics of high frequency power amplifier tetrode tubes.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: September 22, 1987
    Assignee: General Electric Company
    Inventors: Thomas R. Anthony, Philip A. Lindner, Jewell G. Tucker