Coated Or Laminated Patents (Class 313/355)
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Patent number: 4487804Abstract: A coating is provided which substantially lengthens the life of carbon and graphite electrodes used in electrical arc processes for the manufacture of ferrous metals. The coating forms a silica-phosphorus glass upon the electrodes.Type: GrantFiled: August 2, 1982Date of Patent: December 11, 1984Assignee: Nalco Chemical CompanyInventor: Frederick V. Reven
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Patent number: 4469984Abstract: A grid-like electrode for electronic components having its grid portion made of fibrous carbon threads bonded by means of the coke of an organic polymer. The grid-like electrode is made by impregnation of each fibrous carbon thread with a liquid organic polymer containing at least 20% by weight of carbon. Then a grid-like electrode is shaped from these threads and subjected to heating until the polymer is irreversibly cured, followed by heating of the polymer to cause pyrolysis thereof to a glossy carbon state.Type: GrantFiled: February 12, 1982Date of Patent: September 4, 1984Inventors: Jury S. Sergeev, Stanislav M. Shatalov, Vladimir G. Vildgrube, Iosif L. Gandelsman, Valeria K. Kuznetsova, Iosif S. Libman, Egor N. Ljukshin, Vyacheslav I. Frolov, Valery I. Kostikov
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Patent number: 4422005Abstract: In a channel plate electron multiplier having a stack of perforated conducting sheet dynodes insulated from one another, electrons incident on the input face of the stack which do not enter the channels give rise to unwanted secondary electrons which move transverse to the channels in the space in front of the stack. These secondary electrons enter channels remote from the point of incidence and thereby degrade the definition and contrast of an electron image transmitted by the channel plate. A layer of material having a low secondary electron emission, which may be on a sheet carrier, is provided on the stack input face.Type: GrantFiled: June 29, 1981Date of Patent: December 20, 1983Assignee: U.S. Philips CorporationInventors: Derek Washington, Alan G. Knapp
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Patent number: 4404492Abstract: Cathode structures for cathode ray tubes are multi-layer structures wherein the bond between the emissive coating and the substrate is improved by forming the coating from a laminate of at least two self-supporting layers of differing compositions, the bottom layer optimized for bonding to the substrate and the top layer optimized for emissive properties.Type: GrantFiled: August 24, 1981Date of Patent: September 13, 1983Assignee: North American Philips Consumer Electronics Corp.Inventor: George Palty
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Patent number: 4400647Abstract: Cathode structures for cathode ray tubes are multilayer structures wherein the multilayer structures are formed from a laminate of at least two self-supporting layers of particles of emissive material dispersed in a fugitive organic binder matrix.Type: GrantFiled: August 24, 1981Date of Patent: August 23, 1983Assignee: North American Philips Consumer Electronics Corp.Inventor: George Palty
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Patent number: 4382206Abstract: A directly heated type oxide cathode comprising a base made of an alloy containing Ni as a major component and Zr as a reducing agent, a diffusion prevention layer made of Co formed on the base, a coating of Ni powders formed on the diffusion prevention layer, and an electron emissive alkaline earth oxide layer formed on the coating of Ni powders, does not show deformation of Ni powders or peeling of the oxide layer during the production procedures or operation of the cathode.Type: GrantFiled: September 12, 1980Date of Patent: May 3, 1983Assignee: Hitachi, Ltd.Inventors: Masaharu Kumada, Akira Misumi
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Patent number: 4341591Abstract: Method comprises providing a blank laminate consisting essentially of a positive-acting photosolubilizable central layer, first and second etchable metal layers adhered to opposite sides of the central layer and first and second etch-resistant stencils contacting the outer major surfaces of the first and second metal layers. The stencils have different, related open areas therethrough which leave selected portions of the metal layers unprotected. The unprotected portions of the first and second metal layers are etched through, thereby producing first and second openings in the metal layers. Then the central layer is exposed to actinic light through the first and/or second openings, thereby solubilizing selected portions of the central layer, which solubilized portions are then removed.Type: GrantFiled: April 8, 1981Date of Patent: July 27, 1982Assignee: RCA CorporationInventor: Donald J. Tamutus
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Patent number: 4329617Abstract: A control plate for a flat plasma screen, comprising a carrier plate of multi-layer construction, having at least three layers, the middle layer of which is of metal and the outer layers of which are glass. In the manufacture of the control apertures which extend through the control plate, an etching procedure may be employed, involving a series of etching steps with different etching agents, whereby only slight underetchings arise and the control plate maintains sufficient mechanical stability, even with a medium overall thickness. The manufacture of the control apertures may also be effected by a laser-boring operation or the like, in which the metallic middle layer carries off heat developed during the operation, whereby no thermal fissure formations are created.Type: GrantFiled: October 5, 1979Date of Patent: May 11, 1982Assignee: Siemens AktiengesellschaftInventor: Burkhard Littwin
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Patent number: 4310603Abstract: A dispenser cathode is fabricated by covering a reservoir of electron emitting material with a perforated metal foil having an appropriate pattern of pore-sized apertures thereon for providing uniform electron emission from the cathode surface. The electron emitting material is in the form of a pellet of barium oxide impregnated with a wax or resinous material to minimize chemical reduction of the barium oxide in air. The impregnated barium oxide pellet is sandwiched between the apertured foil and a support structure to which the foil is welded. During tube bake-out or subsequently during cathode activation, the wax or resinous material evaporates and barium oxide migrates through the apertures to cover the surface of the foil in a uniform manner. The desired pattern of apertures in the foil is achieved by photolithography, or by forming the foil (e.g., by chemical vapor deposition, sputter deposition, evaporation, or sintering) on a substrate containing an array of protruding posts.Type: GrantFiled: September 13, 1979Date of Patent: January 12, 1982Assignee: Varian Associates, Inc.Inventor: Louis R. Falce
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Patent number: 4301387Abstract: Carbon articles, particularly carbon electrodes, are protected against corrosive attack in use by fusing material to the article, or applying material to the carbon article which under the conditions of its use is capable of fusing to the carbon article, to form a coherent coating of protective material over only that part of the carbon article liable to corrosive attack when the article is in use.Type: GrantFiled: May 14, 1976Date of Patent: November 17, 1981Assignee: Foseco International LimitedInventors: Josef Schiffarth, Clive G. Lorkin, Kenneth J. Fletcher
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Patent number: 4272597Abstract: An electrophotographic sensitizing screen having a great number of apertures, wherein at least an insulating layer and a conductive layer are successively formed on a conductive mesh, is disclosed. These apertures are regularly arranged at such an angle as not to produce moire fringes with respect to a light image projected on the screen.Type: GrantFiled: November 28, 1979Date of Patent: June 9, 1981Inventors: Masaji Nishikawa, Norio Amemiya, Tadahiro Yasuda, Shigeru Nakayama
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Patent number: 4263636Abstract: A miniature flexible air ionizer comprises a first pair of insulating strips having a series of conductive emitters between them, and a second pair of insulating strips having a linear conductor between them and a second linear conductor on that surface of a strip of the second pair which is most remote from the emitter. The emitters and conductors are provided by laminating copper on plastic strips and chemically etching. The emitters are comb-shaped, with teeth having flat ends which are exposed to air and do not extend beyond the strips. An end connector provides mechanical and electrical connections to the ionizer.Type: GrantFiled: June 7, 1979Date of Patent: April 21, 1981Assignee: Statics, Inc.Inventor: Anthony Q. Testone
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Patent number: 4252856Abstract: An aluminum coated carbon article or composite, and process therefor having aluminum chemically bonded to carbon via an interface of a metal monocarbide formed in situ when an intermetallic phase comprising aluminum and a metal capable of reacting with carbon to form a metal carbide is reduced by carbon to aluminum and a metal carbide, the metal selected from the group consisting of tantalum, titanium and hafnium.Type: GrantFiled: February 1, 1978Date of Patent: February 24, 1981Assignee: Union Carbide CorporationInventor: Raymond V. Sara
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Patent number: 4243455Abstract: An improved simple and cheap method of forming electrode connector for liquid crystal display device has been found. This novel method eliminates difficulties in complicated compression molding process required a high accuracy of dimensions in a molded electrode connector.Type: GrantFiled: July 20, 1978Date of Patent: January 6, 1981Assignee: Nippon Graphite Industries, Ltd.Inventors: Hiroshi Shiba, Katsuhiro Murata
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Patent number: 4206263Abstract: The minute pores and discontinuities which are normally present in protective oxide coatings on carbon bodies can be closed and, if desired, filled by immersing the coated carbon body in a metal salt melt having a boiling point above 400.degree. C., and electrodepositing the melt on the coated carbon body. When the electrodeposition step is continued sufficiently long to fill the pores, the product when cool is a coated carbon body carrying an oxidation agent-resistant coating which is keyed into the surface of the carbon.Type: GrantFiled: October 31, 1977Date of Patent: June 3, 1980Assignee: Swiss Aluminium Ltd.Inventors: Hans W. Rieger, Hanspeter Alder
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Patent number: 4196938Abstract: A gas-discharge chamber electrode is proposed, comprising a hollow metal member with an emitting portion on the gas-discharge side and with coolant pipes. The hollow metal member is coated on the outside, except for the emitting portion, with a high-temperature dielectric. The electrode system includes at least two such electrodes.Type: GrantFiled: June 7, 1978Date of Patent: April 8, 1980Inventors: Evgeny I. Lunev, Vladislav M. Nesterenko, Naum A. Iofis, Zhanna A. Lavrova, Alexandr I. Bondarenko, Felix K. Kosyrev, Valery A. Timofeev, Nina P. Kosyreva, Vladimir I. Blokhin, Sergei V. Pashkin
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Patent number: 4197152Abstract: In one aspect of the invention a process for affixing a self-supporting film of emissive materials in a binder to a cathode support member to provide a cathode for a cathode ray tube includes the steps of depositing at least one drop of a liquid mixture containing a solvent for the binder of the film onto a cathode support member, contacting the liquid mixture with the self-supporting film, and preferentially evaporating the liquid mixture to cause the binder of the film to affix the film to the cathode support member.In another aspect of the invention, an improved liquid mixture for affixing a self-supporting film of emissive materials in a binder to a cathode support member includes at least two liquids miscible in all proportions with one liquid essentially a non-solvent and another higher boiling liquid a solvent for the binder of the film.Type: GrantFiled: March 14, 1979Date of Patent: April 8, 1980Assignee: GTE Sylvania IncorporatedInventors: George Palty, Kenneth Speigel
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Patent number: 4178530Abstract: In a thermionic cathode having a planar emissive body and a heating element of pyrolytic graphite which is provided on the side of the emissive body remote from the emissive surface of the emissive body, a uniform temperature distribution adjusts during operation throughout the overall emissive surface when the heating element is planar and the crystallographic c-axis of the pyrolytic graphite extends everywhere normal to the surface of the heating element facing the emissive body. As a result of this the possibility is obtained of realizing a planar, "rapid", induction-free unipotential cathode having a substantially ideal homogeneous temperature distribution.Type: GrantFiled: July 11, 1978Date of Patent: December 11, 1979Assignee: U.S. Philips CorporationInventors: Bernhard Lersmacher, Hans Lydtin, Horst Seifert, Johannes W. A. Krol
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Patent number: 4163173Abstract: The invention relates to a porous body for electrical accumulators which body shows a new structure comprising at least two cohesive layers, at least one of which is a porous layer of sintered metal powder and at least one a thinner layer of solid metal produced by fusion and solidification of one of the external surfaces of the adjacent porous layer. The invention also relates to a method of manufacturing such an electrode body as well as to an electrical accumulator containing at least one such electrode body.Type: GrantFiled: February 22, 1977Date of Patent: July 31, 1979Assignee: Nife-Jungner ABInventor: Sten B. C. Norling
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Patent number: 4129894Abstract: A laminated current surge protector comprising a flexible, conformable arrestor having a metal conductor encapsulated between a wear resistant tape adhered to the outer surface of the conductor and a dielectric tape adhered to the inner surface of the conductor. The arrestor is adhered to metal members by a bonding agent and extends across the joint between the members which includes an electrical insulating medium separating the members. The dielectric tape has a plurality of apertures therein exposing the encapsulated conductor to the metal members to provide a gap through which excessive surges of current in the metal members can pass through the conductor from one metal member to the other and thereby by-pass the joint and prevent injury thereto.Type: GrantFiled: July 7, 1977Date of Patent: December 12, 1978Assignee: Wisconsin Gas CompanyInventor: Keith A. Chen
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Patent number: 4119761Abstract: A heat radiation element has a substrate and a heat radiation layer formed on the substrate by oxides of a chromium-containing alloy. The oxides contain at least 35% by weight of chromium based on the total weight of the metals constituting the oxides.Type: GrantFiled: December 7, 1976Date of Patent: October 10, 1978Assignee: Tokyo Shibaura Electric Co., Ltd.Inventors: Takashi Kuze, Toshiharu Matsuki, Koji Nagaoka, Naoji Iwai
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Patent number: 4107569Abstract: In an electrode assembly of at least two electrodes connected together in an insulating manner, said electrodes are kept at a defined distance by means of grains of an electrically insulating material. Said grains are sunk on two sides in layers of an adhesive material present on the facing surfaces of the electrodes and the sum of the thicknesses of which is smaller than the distance between the relevant electrodes.Type: GrantFiled: January 13, 1977Date of Patent: August 15, 1978Assignee: U.S. Philips CorporationInventor: Hubertus Joseph Ronde
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Patent number: 4079285Abstract: An evacuated enclosure in the form of a cylindrical cavity having a dielectric located therein defines a dielectric guide for transporting an electron beam introduced into the cavity. The dielectric, which is disposed about the cavity wall, is operative to trap the charge associated with normal vacuum expansion of the electron beam. The trapped charge, in cases where the injected electron beam is not space charge limited, modifies the electric fields within the cavity in such a way as to provide focusing forces on the electron beam propogating through the cavity, the focusing forces being sufficient to guide a major portion of the beam through the enclosure without attenuation. Within the injected beam is space charge limited, the trapped charge induces an electrical discharge -- either surface flashover or volume puncture of the dielectric -- which liberates gaseous material.Type: GrantFiled: February 10, 1975Date of Patent: March 14, 1978Assignee: Simulation Physics, Inc.Inventor: Roger G. Little
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Patent number: 4066923Abstract: In a color display tube of the post focusing type the color selection means comprise a first and a second system of lens electrodes. A lens electrode belonging to the first system is connected by means of a diffusion bond to one of the metallized sides of an electrically insulating member which is metallized on two sides. A lens electrode belonging to the second system is formed either by the other metallized side of the insulating member or is secured to said other metallized side of the insulating member also by means of a diffusion bond.Type: GrantFiled: January 13, 1977Date of Patent: January 3, 1978Assignee: U.S. Philips CorporationInventor: Johannes VAN Esdonk
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Patent number: 4006379Abstract: Upper and lower carbon electrodes for an ultraviolet arc lamp used for light-fastness testing. The upper electrode is in the shape of an elongated cylinder, the cross-section of which has an exterior annular portion consisting of a carbonaceous material and an interior core portion consisting of a mixture of a carbonaceous material and potassium sulfate. The upper electrode has dispersed therethrough potassium chloride as a stabilizing agent. The lower electrode is in the shape of an elongated cylindrical tube having a hollow interior and is of a carbonaceous material having a high electrical conductivity and has dispersed therethrough potassium chloride as a stabilizing agent. When the upper and lower electrodes are placed with their ends opposed to each other and an alternating current at 135V and 16A is discharged thereacross, a stable light is continuously produced.Type: GrantFiled: December 19, 1975Date of Patent: February 1, 1977Inventor: Shigeru Suga
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Patent number: 4005325Abstract: A carbon electrode for a carbon arc lamp for emitting light similar to sunshine for use as a light source in light-fastness and weathering tests. The carbon electrode is composed of carbon which is homogeneously mixed with an amount of an incandescent material in a proportion of 6 to 12 weight percent of the total weight of the carbon and incandescent material together, and then molded into the shape of the electrode. The surface of the carbon electrode, exclusive of the top thereof, is provided with a copper or other metal coating.Type: GrantFiled: July 22, 1975Date of Patent: January 25, 1977Inventor: Shigeru Suga
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Patent number: 3971964Abstract: A cylindric grid electrode for electronic tubes formed by a set of carbon threads or filaments which have been coated with pyrolytic graphite. The coated carbon threads or filaments can be arranged in various configurations within the superfices of the cylinder such as in circumferentially spaced relation parallel to the cylindric axis alone, or in combination with another set of the coated threads or filaments located in spaced relation perpendicular to the axis or obliquely thereto and which overlay the first set and are soldered to the latter at the points of intersection. The coated carbon threads or filaments may also be arranged in two sets of helices oblique to the cylindric axis and which criss-cross and are soldered together at their points of intersection.Type: GrantFiled: October 21, 1974Date of Patent: July 27, 1976Assignee: BBC Brown Boveri & Company LimitedInventor: Julius Slosiar
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Patent number: 3939028Abstract: Carbon articles, particularly carbon electrodes, are protected against corrosive attack in use by fusing material to the article, or applying material to the carbon article which under the conditions of its use is capable of fusing to the carbon article, to form a coherent coating of protective material over only that part of the carbon article liable to corrosive attack when the article is in use.Type: GrantFiled: October 29, 1974Date of Patent: February 17, 1976Assignee: Foseco International LimitedInventors: Josef Schiffarth, Clive Graham Lorkin, Kenneth John Fletcher