Heat Utilized Patents (Class 427/120)
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Patent number: 6468584Abstract: A method for manufacturing a conductive thin film patterned substrate which is capable of being practiced at a reduced cost without causing environmental pollution while eliminating any troublesome after-treatment. An insulating substrate made of glass or the like is formed thereon with an InSnO, SnSbO, ZnAlO or Al thin film. Then, a phosphate low-softening glass paste layer is formed on the thin film. A portion of the thin film contiguous to an insulating layer made of the low-softening glass paste melts into a glass region to form an insulating layer region, so that a conductive thin film region may be patterned as electrodes.Type: GrantFiled: October 16, 2000Date of Patent: October 22, 2002Assignee: Futaba CorporationInventors: Tatsuo Yamaura, Shigeo Itoh
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Patent number: 6444256Abstract: Nanometer-size wires having a cross-sectional dimension of less than 8 nm with controllable lengths and diameters are produced by infiltrating latent nuclear or ion tracks formed in trackable materials with atomic species. The trackable materials and atomic species are essentially insoluble in each other, thus the wires are formed by thermally driven, self-assembly of the atomic species during annealing, or re-crystallization, of the damage in the latent tracks. Unlike conventional ion track lithography, the inventive method does not require etching of the latent tracks.Type: GrantFiled: November 17, 1999Date of Patent: September 3, 2002Assignee: The Regents of the University of CaliforniaInventors: Ronald G. Musket, Thomas E. Felter
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Patent number: 6315853Abstract: A method for manufacturing an ink jet recording head by combining each of the processes to fabricate a heater board comprises (I) the first step of patterning a resistive layer on a substrate, (II) the second step of laminating a first protection layer and patterning the protection layer to form a groove by removing an area for wiring electrode layers to be formed later, (III) the third step of laminating a layer formed by material for use of the wiring electrode layers, (IV) the forth step of continuously giving heat treatment to the surface of the substrate, while the surface is not allowed to be exposed to the air outside, to enable the layer formed by the material of the wiring electrode layers to flow into only the groove on the first protection layer provided in the first step, and making the surface flat, as a result of which, a pair of electrode layers are formed to enable the resistive layer between them to be constituted as the heat generating unit and (V) the fifth step of forming a second protectiType: GrantFiled: October 15, 1996Date of Patent: November 13, 2001Assignee: Canon Kabushiki KaishaInventors: Masahiko Kubota, Masami Kasamoto, Toshihiro Mori, Teruo Ozaki
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Patent number: 6316046Abstract: The invention relates to wire enamels comprising as binders polyesterimide and/or polyamideimide, the binders comprising as monomeric building blocks polyoxyalkylenediamine having terminal amino groups. The polyoxyalkylenediamines are preferably selected from the group polyoxyethylenediamine, polyoxypropylenediamine and polyoxyethylenepropylenediamine. The invention also encompasses the use of the novel wire enamels for coating copper wires, especially thick round wires or profiled wires.Type: GrantFiled: March 30, 1999Date of Patent: November 13, 2001Assignee: Schenectady InternationalInventors: Klaus-Wilhelm Liener, Gerold Schmidt, Helmut Lehmann
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Patent number: 6211326Abstract: The invention relates to a process for preparing hydroxyl- and carboxyl-containing polyesterimide resins, comprising as monomeric components: (A) imide-forming compounds having at least two primary amino groups and/or at least two isocyanate groups or imide-forming compounds having at least one primary amino group and/or at least one isocyanate group and at least one further functional group selected from hydroxyl, carboxyl and/or carboxylic anhydride, (B) polycarboxylic acids and/or their anhydrides and/or their esters and (C) polyols, characterized in that (I) component (A) is reacted with part of component (B) to form a polyimide, (II) the polyimide obtained in accordance with stage (I) is reacted with component (C) to form a polyesterimide, and finally (III) the polyesterimide obtained in accordance with stage (II) is reacted with the remaining part of component (B) to form the Also embraced by the invention is the use of the polyesterimides prepared by the process according to the invention as biType: GrantFiled: July 13, 1999Date of Patent: April 3, 2001Assignee: Schenectady International, Inc.Inventors: Brian W. Glasper, Geoffrey C. Rix, Klaus-Wilhelm Lienert
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Patent number: 6153270Abstract: A process of applying an inorganic coating to an electrically conducting body, in particular a metallic workpiece, is characterized with respect to a precisely controllable temperature variation with short temperature changes in an economical and energy-saving operation in that the body first undergoes a preparation. Thereafter, if need be, the body is degreased and/or chemically pretreated and/or blasted. Subsequently, a coating medium is applied to at least the surface region of the body being coated. Then, at least the surface region of the body being coated is heated by induction to a reaction temperature before and/or while and/or after applying the coating medium. Finally, the coating medium is fully reacted to a coating, whereupon the body undergoes a cooling.Type: GrantFiled: May 13, 1999Date of Patent: November 28, 2000Assignee: Ewald Dorken AGInventors: Horst Russmann, Thomas Kruse, Hans-Detlef Hinz
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Patent number: 6106893Abstract: A method for manufacturing an inductor element for noise suppression, including the steps of coating one surface of a supporting body with a paste comprising ferromagnetic particles and resin so as to form a sheet, forming a conductive line by printing a conductive paste on the sheet, and coating the conductive line with a paste including ferromagnetic particles and resin so as to cover the conductive line and form a core. Also included is a step of applying heat treatment under pressure. The ferromagnetic metal particles include iron particles having diameters that fall within a range of 0.01 .mu.m to 10 .mu.m, and a content of the ferromagnetic metal particles is within a range of 30 vol % to 70 vol %.Type: GrantFiled: August 6, 1997Date of Patent: August 22, 2000Assignee: TDK CoporationInventor: Fumio Uchikoba
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Patent number: 6071553Abstract: In a method for the production of melt-bonding wires to enable the use of non-solvent-containing thermoplastic or thermosetting coating materials, meltable thermoplastic or thermosetting materials are supplied to a fusion chamber (8) where they are melted. The insulated electrical conductor (1) to be coated is drawn through the melt and after the coating process leaves the coating chamber (12) through a calibration device (5), which is followed by cooling.Type: GrantFiled: July 28, 1997Date of Patent: June 6, 2000Assignee: AlcatelInventors: Maurice Ferne, Rolf Nagel, Pierre Yves Le Tiec
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Patent number: 5998027Abstract: A flat electrical wire having a substantially rectangular cross-section is prepared from an electrical conductor having a circular cross-section, first by applying a benzimidazol-based polymer coat to the wire, then rolling the coated conductor to yield the flat wire. The flat wire thus prepared has a high heat resistance and dielectric breakdown resistance and can avoid dislocation or slippage when used in a magnet coil.Type: GrantFiled: February 28, 1997Date of Patent: December 7, 1999Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Yasuhiko Onishi, Shinichi Matsumoto
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Patent number: 5875547Abstract: This invention relates to a method for preventing transport of fluids--such as water and/or gas--through a joint between at least two insulated cable conductors (1,2;21,22,23). The method includes provision of a jointing ferrule (3) for insertion of the conductor ends into the ferrule and making required electrical contacts, --and provision of a molded sheath (8) of insulation material over the joint in sealed contact with the conductor insulation. The ferrule is precovered with a coating containing EEA copolymer to obtain improved adhesion between the ferrule and the insulation sheath. The mold material must be compatible with--and preferably of the same material--as the conductor insulation.Type: GrantFiled: September 19, 1997Date of Patent: March 2, 1999Assignee: AlcatelInventors: Bj.o slashed.rn Larsson, Liv Molvik Lundegaard
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Patent number: 5786086Abstract: A conductive wire coated with an improved electrical insulation and methods for the preparation of same. The methods involve coating a conductive wire with an insulating material that comprises a curable acrylate-modified aminoamide resin. The insulated conductive wires possess highly desirable properties, including, for example, desirable dielectric strength, heat-resistance, flexibility, mechanical properties and/or uniformity.Type: GrantFiled: January 2, 1996Date of Patent: July 28, 1998Assignee: Union Camp CorporationInventors: Charles Richard Frihart, Joseph Kliwinski
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Patent number: 5750403Abstract: On a first insulating film covering a substrate, wiring layer patterns are formed and thereafter, a second insulating film of plasma CVD--SiO.sub.2 or the like is formed thereon. A hydrogen silsesquioxane resin film having a flat surface is spin-coated on the second insulating film. Thereafter, the resin film is subjected to a first heat treatment in an inert gas atmosphere to convert the resin film into a silicon oxide film of a preceramic phase. On this silicon oxide film, a third insulating film of plasma CVD--SiO.sub.2 or the like is formed. Thereafter, a second heat treatment is performed to convert the silicon oxide film of preceramic phase into a silicon oxide film of a ceramic phase, while preventing fine size projections from being formed on the surface of the silicon oxide film. Thereafter, a second wiring layer is formed on the third insulating film. It is possible to planarize an interlevel insulating film and improve a process yield.Type: GrantFiled: July 12, 1996Date of Patent: May 12, 1998Assignee: Yamaha CorporationInventors: Yushi Inoue, Takahisa Yamaha
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Patent number: 5744561Abstract: The invention relates to the use of fluorinated copolymers based on trifluoroethylene (VF3) and tetrafluoroethylene (C.sub.2 F.sub.4), having melting points above 210.degree. C. and soluble in the customary polar solvents, as protective coatings for a variety of substrates (plates, wires, cables, fibers, etc.) in the form of extruded films or sheaths or in the form of varnishes and paints.Type: GrantFiled: October 11, 1995Date of Patent: April 28, 1998Assignee: Elf Atochem S.A.Inventor: Patrick Kappler
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Patent number: 5736193Abstract: The present invention relates to solderable wire-coating compositions based on hydroxyl group-containing polyesters, blocked polyisocyanates, organic solvents and catalysts, which are characterized in that they containA) from 7 to 25% by weight of hydroxyl group-containing polyesters,B) from 55 to 70% by weight of a fully blocked aromatic diisocyanate adduct or of a plurality of fully blocked aromatic diisocyanate adducts,C) from 0.1 to 3% by weight of catalysts,D) from 1 to 8% by weight of a polyol or of a plurality of polyols, andE) from 1 to 36.9% by weight of an alkylene carbonate or of a plurality of alkylene carbonates,the total weight of the wire-coating compositions in each case being 100% by weight.The present invention also relates to a process for the continuous coating of wires using the solderable wire-coating compositions described.Type: GrantFiled: September 5, 1995Date of Patent: April 7, 1998Assignee: BASF Lacke +Farben, AGInventors: Michael Schink, Klaus Wilhelm Lienert, Joachim Runge, Silvia Hentschel
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Patent number: 5736190Abstract: An electrical component comprising an electrical component having an exterior protective layer on at least a portion of a surface. The layer is a cured copolymer of a reaction between at least one oligomer having a terminal ethylenically unsaturated group and at least one monomer having a terminal ethylenically unsaturated group. Alternatively, the layer is a cured copolymer of a reaction between at least two oligomers having a terminal ethylenically unsaturated group. The copolymerization reaction is preferably in the presence of a free radical initiator curing agent and a transition metal catalyst.Type: GrantFiled: February 23, 1996Date of Patent: April 7, 1998Assignee: Cashem, Inc.Inventors: Douglas A. Usifer, Melvin Brauer, James C. Chang, Yuan Chieh Chu
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Patent number: 5723367Abstract: A wiring forming method includes a step of forming an oxide film on a silicon substrate, a step of forming a connection hole whose aspect ratio is larger than 1 in the insulation film, a step of forming an Al wiring film on the entire surface by the bias sputtering method and heating the silicon substrate to cause Al wiring film to flow into and fill the connection hole, and a step of processing Al wiring film to form an Al wiring.Type: GrantFiled: February 20, 1996Date of Patent: March 3, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Junichi Wada, Shohei Shima
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Patent number: 5716665Abstract: The invention relates to a foamable solid composition based on thermoprocessable perfluoropolymers comprising, homogeneously dispersed in the polymeric matrix, 0.05-20% by weight of a liquid fluoropolyether having molecular weight lower than 3,500 and 0.002-10% by weight of a nucleating agent. The composition results to be suitable for extruding foamed cables.Type: GrantFiled: May 19, 1995Date of Patent: February 10, 1998Assignee: Ausimont S.p.A.Inventors: Giandomenico Vita, Massimo Pozzoli, Domenico De Angelis
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Patent number: 5674614Abstract: A varnish-coated electric wire includes cured coatings of polybenzimidazole. The polybenzimidazole coatings are cured utilizing a polymerization initiator. The varnish-coated electric wire has a high heat-resistance.Type: GrantFiled: June 1, 1995Date of Patent: October 7, 1997Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Yasuhiko Onishi, Kazuo Iura, Atsushi Maeno, Takashi Itoh, Kazunori Tsuji
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Patent number: 5660878Abstract: Process for the reduction of breakdown risks with respect to the solid dielectric insulant of transmission cables and lines operating under high voltages. The insulant normally separates the conductors of a multi-conductor line or the central conductor and the outer metal envelope of a coaxial line. Small amounts of metal particles with dimensions below 1 micron are added to the dielectric insulant mass.Type: GrantFiled: May 16, 1995Date of Patent: August 26, 1997Assignee: Commissariat a l'Energie AtomiqueInventors: Claude Le Gressus, Claude Faure, Pierre Bach, Guy Blaise
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Patent number: 5644105Abstract: A cable, self-extinguishing and releasing low quantities of toxic and corrosive smokes and gases, for optical or electrical applications, comprises a coating (3) including an outer layer (5) consisting of a polymeric mixture including 50 to 80 parts (w/w) of an aromatic polyester of the isophthalic and terephthalic acids, with bisphenol A and 20 to 50 parts (w/w) of a polyether-polyester block elastomer copolymer having a Shore hardness D greater than 50 and a Vicat softening point higher than 170.degree. C., as well as a coaxial inner (4) layer comprising an polyester thermoplastic elastomer including a quantity of aromatic groups such that its Shore hardness D is equal to at least 45 and such that the delamination shear force necessary to separate said layers (4, 5) from one another is equal to at least 2,000 g. after ageing in oil ASTM Nr. 3 for 2 hours at 100.degree. C.Type: GrantFiled: December 6, 1995Date of Patent: July 1, 1997Assignee: Pirelli Cavi S.p.A.Inventor: Luca Castellani
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Patent number: 5628836Abstract: The method of preparing an NB.sub.3 Al superconducting wire comprises the steps of passing an Nb/Al composite wire consisting of an Nb metal or an Nb alloy and an Al metal or an Al alloy through a furnace for heating the same from the room temperature to a prescribed temperature, subsequently passing the same through the furnace for holding the same at the prescribed temperature, and subsequently passing the same through a cooling part for cooling the same from the prescribed temperature to the room temperature, and these steps are continuously carried out by continuously moving the wire. According to the present invention, it is possible to obtain an Nb.sub.3 Al superconducting wire having homogeneous characteristics along its overall width with a high critical current density.Type: GrantFiled: November 18, 1994Date of Patent: May 13, 1997Assignee: Sumitomo Electric Industries, Ltd.Inventors: Naoki Ayai, Yuichi Yamada
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Patent number: 5607719Abstract: A process and device for the preparation of coatings on wires or fiber-like materials by mixing one or more polymers which contain carboxyl and/or amide groups (A) and with at least two carboxyl and/or amide groups, a hydroxyl number of less than 130 and a number average molecular weight of 200 to 5000, in the liquid state, with one or more polyisocyanates (B) with at least two free isocyanate groups in the molecule and a number average molecular weight of 200 to 3000, in the liquid state, and optionally one or more other components (C) which are normally present in lacquers, in the liquid state, continuously immediately before application in a ratio such that 0.5 to 5.0 isocyanate groups are allotted to each carboxyl group or that 0.02 to 2.Type: GrantFiled: August 26, 1994Date of Patent: March 4, 1997Assignee: Herberts GmbHInventors: Diethard Winkler, Sabine Sohnius, Guido Hoveler, Wolfgang Schulke, Rainer Krause
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Patent number: 5510153Abstract: Glass particles (14) are mixed within an uncured silicone resin (13). The fluid uncured resin is placed in a portion of a terminal block (11) and cured to form a gel (13') by subjecting it to microwaves in a microwave oven (22). Conductors (25, 26) to be interconnected are next inserted into the cured silicone gel and interconnected. The cured gel containing the glass particles thereafter constitutes a dependable insulator for the conductors, particularly the portions of the conductors that are interconnected.Type: GrantFiled: August 4, 1993Date of Patent: April 23, 1996Assignee: AT&T IPM CorporationInventors: Peter F. Lilienthal, II, Ivan Pawlenko, Ching-Ping Wong
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Patent number: 5446080Abstract: A liquid adhesive comprising a dispersion of the following component (b) in a solution of the following component (a) in an organic solvent:(a) a piperazinylethylaminocarbonyl-containing butadiene-acrylonitrile copolymer(b) a maleimide compound having at least two maleimide groups.An insulating pattern or insulating layer is formed by applying the liquid adhesive onto an electronic part by a dispensing or screen printing method, followed by thermally curing.Type: GrantFiled: October 27, 1994Date of Patent: August 29, 1995Assignee: Tomoegawa Paper Co., Ltd.Inventors: Takeshi Shima, Katsuji Nakaba, Masaharu Kobayashi, Yukinori Sakumoto
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Patent number: 5431954Abstract: Disclosed herein are a heat resistant insulated wire which is not decomposed but maintains insulativity under a high temperature with excellent adhesion of a coating film, and a method of preparing the same. The heat resistant insulated wire includes a base material consisting of an electrical conductor, and an insulating layer provided on its surface. The insulating layer is obtained by heating a second polymer, in which main chains expressed in a chemical formula --[Si(R.sub.1).sub.2 --N(R.sub.2)].sub.n -- are cross-linked with each other by chloroborazine through side chains containing trialkylsilyl radicals at a temperature of at least about 300.degree. C. and not more than 500.degree. C.Type: GrantFiled: August 19, 1994Date of Patent: July 11, 1995Assignee: Sumitomo Electric Industries, Ltd.Inventors: Shinji Inazawa, Kouichi Yamada
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Patent number: 5431953Abstract: A length of conductive wire is supported between a first reel and a second reel. The first reel is driven to move the wire through the device in a stepped fashion. Each time the wire stops a reciprocating plunger brings a material to be evaporated into contact with the wire. An electric current is passed through the length of wire in the area where the material contacts the wire. The wire is heated by the electric current to melt the material onto the wire to form a bead of material thereon. The wire is advanced to repeat the bead forming process. The wire with the beads formed thereon is wound onto the first reel for later use in an evaporator process. An infrared sensor monitors the heating process to determine if the material is melted at the desired temperature. A sensor is also provided to stop the device if the wire breaks. The advancing of the wire, the operation and refilling of the plunger and the heating of the wire are all performed automatically.Type: GrantFiled: May 12, 1992Date of Patent: July 11, 1995Assignee: Hamamatsu CorporationInventor: Norman Lyshkow
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Patent number: 5426092Abstract: A thin film, high T.sub.c fluorinated, superconducting having a lattice structure differing from the lattice structure of the material substrate, such as sapphire or stainless steel, upon which it is grown. The superconducting material is characterized by basal plane alignment of the unit cells thereof even though the substrate does not possess a perovskite lattice structure. A laser ablation technique is used to evaporate material from a fluorinated pellet of target material to deposit the fluorinated superconducting material on the substrate. The instant invention provides for a low pressure and relatively low temperature method of depositing a superconducting film which is characterized by (1) a minimal number of high angle grain boundaries typically associated with polycrystalline films, and (2) aligned a, b, and c axes of the unit cells thereof so as to provide for enhanced current carrying capacities.Type: GrantFiled: June 25, 1992Date of Patent: June 20, 1995Assignee: Energy Conversion Devices, Inc.Inventors: Stanford R. Ovshinsky, Rosa Young
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Patent number: 5382455Abstract: A method and apparatus are provided for imparting a sliding capacity to a wire which is fed through at least one loop of a strand of material which has been steeped in a lubricant such as paraffin or wax. Preferably, the strand of material is advanced at a speed which is less than the feed speed of the wire. The apparatus includes means for feeding the wire and means for advancing the strand of material around the wire. The apparatus also includes a compensating device which adjusts the tension of the strand of material and checking device for automatically a checking the lubricating operation.Type: GrantFiled: August 12, 1993Date of Patent: January 17, 1995Assignee: Gerhard BoockmannInventor: Gerhard Boockmann
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Patent number: 5347708Abstract: An implantable electrode of the type in which an elongated wire coil forms the electrode surface. The electrode coil is mounted around an insulative lead body and is stabilized on the lead body by means of a plastic filler between the individual turns of the electrode coil, extending radially outwardly to approximately one-third of the diameter of the electrode coil wire. The filler is produced by stretching a portion of the lead body which normally displays an outer diameter greater than the inner diameter of the electrode coil sliding the electrode coil over the lead body, inserting an expandable mandrel into the lead body and expanding the mandrel to urge the lead body into contact with the electrode coil. This assembly is then heated to encourage flow of the lead body into the spaces between the electrode coil to stabilize the coil on electrode body and to present fibrotic ingrowth around the electrode coil wire.Type: GrantFiled: September 21, 1993Date of Patent: September 20, 1994Assignee: Medtronic, Inc.Inventors: Thomas C. Bischoff, Pedro A. Meregotte, David P. Morell
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Patent number: 5302411Abstract: A method and apparatus for continuously curing cross-linkable polymers in a ceramic or refractory tunnel whose interior surface is coated with a material exhibiting excellent emissivity. The ceramic tunnel is energized by a heat source consisting of nicrome or equivalent wires and when coated with a metallic oxide material such as titanium dioxide colored to a black hue, or equivalent high emissivity materials, the tunnel performs as a black body radiator.Type: GrantFiled: June 22, 1992Date of Patent: April 12, 1994Inventor: Endre Toth
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Patent number: 5296260Abstract: A solution of a ceramics precursor prepared from at last one or two types of metal alkoxides or metal acylates is applied onto a ceramics film having irregularity on its surface, which is formed on a conductor surface, to fill up irregular portions of the surface. This ceramics precursor solution is at least partially changed to a ceramics state by heating. The surface is smoothed by such application of the ceramics precursor solution, and general disadvantages of weakness against rubbing and inferiority in workability can be improved. Further, it is possible to improve an outgassing property.Type: GrantFiled: August 22, 1991Date of Patent: March 22, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kazuo Sawada, Shinji Inazawa, Kouichi Yamada
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Patent number: 5291670Abstract: A process for baking electrically conductive wires clad in insulating plastics resin, comprising a first, evaporation stage for evaporation of solvents and a second resin polymerization and cross-linking stage, which are performed respectively in a first and in a second region of a tunnel chamber in a continuous oven between the inlet regions and outlet regions of which the wires advance, a third stage comprising aspiration from the oven of a mixture of air and solvents formed during the first evaporation stage, and a fourth stage comprising heating this mixture to a predetermined temperature such as to cause combustion of the solvents, and including a fifth stage of introducing heat energy to these regions of the oven from at least part of the stream of air and combustion products coming from the fourth stage, through heat exchangers disposed on the outer surface of this tunnel chamber, in such a way as significantly to reduce the introduction of heat energy provided to the chamber by heating means suppliedType: GrantFiled: August 29, 1991Date of Patent: March 8, 1994Assignee: S.I.C.M.E. S.p.A. Societa Industriale Costruzioni MicroelettricheInventors: Renato Surra, Bruno Bronzini, Michele Ricco
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Patent number: 5283082Abstract: A method for applying solder to a braided shield of a cable, particularly of a coaxial cable. A cable end portion is dipped into a solder bath a defined depth and for a defined time period prior to the removal of the jacket of the cable.Type: GrantFiled: April 14, 1992Date of Patent: February 1, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Carl H. Hussmann, Guenter Szaj
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Patent number: 5260104Abstract: A method and related apparatuses are disclosed for coating an elongated filament, such as wire, wherein wire is coated with a heated coating material, such as polyetheretherketone (PEEK), and the coated wire is maintained at a temperature and for a period of time sufficient for a desired quantity and size of crystals to form in the coating material and to minimize internal residual stress. Thereafter, the coated wire is rapidly cooled to a temperature below its crystallization temperature, such as in a quenching bath. A crystalline PEEK coating results which has minimized internal residual stress, is less brittle, and has improved cracking, peeling and abrasion resistance over amorphous PEEK coating obtainable using prior methods.Type: GrantFiled: November 25, 1992Date of Patent: November 9, 1993Assignee: Camco International Inc.Inventors: Edward W. S. Bryant, Isaac T. Reidland
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Patent number: 5254659Abstract: This invention relates to insulated wires having good heat resistance and solderability. In particular, wires coated with a polyimide resin or an imide-modified polyurethane resin are provided. They can each be produced by coating a conductor with an insulating coating composition which contains a polyamic acid represented by the following formula: ##STR1## wherein R.sup.1 means a particular tetravalent organic group, R.sup.2 denotes a specific divalent organic group, X is an alkylene or alkylenephenylene group, and n stands for a positive integer.Type: GrantFiled: March 27, 1991Date of Patent: October 19, 1993Assignee: Hitachi, Ltd.Inventors: Tetsuo Tajima, Ryoichi Sudo, Makoto Kobata, Fusaji Shoji, Masayoshi Kitadani, Kouji Oikawa
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Patent number: 5234627Abstract: Improved conductive latex dispersions are disclosed comprising a specific blend of conductive carbon black particles. The carbon black component of the blend comprises acetylene carbon black particles and furnace black particles, with the furnace black particles having a nitrogen surface area (m.sup.2 /gm) of about 250 or greater and a DBP absorption value cc/100 gm of about 180 or above. The dispersions exhibit stable viscosity upon usage and storage and still result in acceptable conductivity.Type: GrantFiled: December 11, 1991Date of Patent: August 10, 1993Assignee: DAP, Inc.Inventor: Brian L. Damschroder
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Patent number: 5233011Abstract: An insulated wire having excellent thermal resistance and good surface appearance is obtained by coating a condutor with a specific polyimide in a temperature range of 300.degree. C. to 450.degree. C. and controlling moisture content to 200 ppm or less.Type: GrantFiled: February 18, 1992Date of Patent: August 3, 1993Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Masumi Saruwatari, Shoichi Tsuji, Masami Nakano, Shinobu Moriya, Masahiro Ohta, Toshiyuki Nakakura
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Patent number: 5232737Abstract: A process for preparing an insulated metal wire with a melt-coated, adherent sheath of a polymer consisting essentially of the following repeat units: ##STR1## wherein n is 4 or 5; X is from 0.01 to 0.50; and Ar is at least one divalent aromatic radical selected from the group consisting of 1,3-phenylene, 1-methyl-2,4-phenylene and 3,4'-oxydiphenylene, comprising heating the bare wire to a temperature in excess of the Tg of the polymer and melt-coating the wire with the polymer. This produces an insulated wire that is stable to high temperatures and is resistant to water crazing, cracking and loss of coating.Type: GrantFiled: November 9, 1992Date of Patent: August 3, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Hamid M. Ghorashi, John C. Norman
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Patent number: 5217943Abstract: A high temperature superconducting wire and an improved process of making the same wherein a metal wire chosen from the group consisting of: Y; Sm; Eu; Gd; Dy; Ho; Er; Tm; Yb; and Lu is oxidized and the oxidized metal wire is then coated with molten barium-copper-oxide. The process allows high-quality superconducting wire to be easily and continuously fabricated.Type: GrantFiled: January 25, 1989Date of Patent: June 8, 1993Assignee: The University of ArkansasInventors: Allen M. Hermann, Zhengzhi Sheng, Q. A. Shams
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Patent number: 5204139Abstract: Disclosed is a thermionic emission material coating method for a filament used in a fluorescent display tube. The tungsten wire emerges in a carbonate oxide thermionic emission material in dryable form while rotating it so that the carbonate oxide becomes coated on the circumference of the wire and then dries the tungsten wire while rotating it to have a uniform thickness of coating over its entire circumference, thereby preventing flaking off the thermionic emission material and filament breakage which is caused by the uneven coating of thermionic emission material.Type: GrantFiled: October 30, 1991Date of Patent: April 20, 1993Assignee: Samsung Electron Devices Co., Ltd.Inventor: Kyeong-seok Choi
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Patent number: 5156883Abstract: A process for depositing a ceramic coating on a filament, which comprises heating the filament by passage of an electric current via at least two electrodes, and passing the heated filament through a deposition chamber containing games which on contact with the hot filament deposit the required coating; characterized in that after deposition of the coating, the coated filament passes through an electrode containing a liquid metal mixture which is a mercury/indium or mercury/cadmium amalgam or a gallium/indium mixture.Type: GrantFiled: July 2, 1991Date of Patent: October 20, 1992Assignee: The British Petroleum Company P.L.C.Inventors: Philip Gruber, Ashleigh M. Kewney, Robert A. Shatwell
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Patent number: 5139820Abstract: A method of manufacturing a ceramic insulated wire involves preparing an extrudable gel compound formed by dissolving a metal-organic compound in a solvent and adding at least one thermoplastic polymer or its monomer to the mixture to make the gel compound extrudable. The so prepared extrudable gel compound is then extruded around the outer periphery of a conductor for coating the conductor with a gel coating. Thereafter a heat treatment is performed for sintering the gel compound to form a ceramic coating.Type: GrantFiled: December 21, 1990Date of Patent: August 18, 1992Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kazuo Sawada, Shinji Inazawa, Kouichi Yamada
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Patent number: 5128175Abstract: A process for producing an insulated electric wire, comprising the steps of coating around a conductor an energy radiation curable resin composition having heat expansible microspheres incorporated therein, and curing the energy radiation curable resin composition thus coated on the conductor by exposure to an energy radiation. The process also comprises the step of heating the energy radiation curable resin composition to expand the heat expansible microspheres in the energy radiaiton curable resin composition, thereby forming a high-porosity insulation layer on the conductor. An insulated electric wire comprises a conductor; an energy radiation curable resin composition layer having microspheres incorporated therein and surrounding the conductor, the outside diameter of the microspheres in the energy radiation curable resin composition layer being maximum in the vicinity of the conductor and decreasing gradually toward the periphery of the energy radiation curable resin composition layer.Type: GrantFiled: March 13, 1990Date of Patent: July 7, 1992Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toru Yamanishi, Tatsuya Kakuta, Akinori Mori
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Patent number: 5115103Abstract: This invention relates to a novel coating structure composed of a mixture of an energy irradiation curable resin composition and microspheres, which is used to form a thinfilm coating on a small diameter conductor, thus producing an insulated conductor which has low capacitance obtained in spite of the thin-film coating, has very little variation in capacitance due to the manufacturing process, has a smooth coating layer, and can be manufactured quickly.Type: GrantFiled: November 6, 1989Date of Patent: May 19, 1992Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toru Yamanishi, Tatsuya Kakuta, Akinori Mori
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Patent number: 5091028Abstract: This invention provides a heat-resistant voice coil of H class in heat-resistance standard, which is characterized in that an electrically insulated adhesive paint applied onto both a bobbin and conductor wire is mainly consisted of a mixture comprising all aromatic polyamide resin and a hardening agent composed of aromatic polyamic acid. This invention further provides a method of manufacturing such a heat-resistant voice coil, wherein the conductor wire coated with the paint is wound around the bobbin preliminarily coated with the paint in a semihardened state, while applying a non-water polar solvent onto the bobbin.Type: GrantFiled: May 30, 1989Date of Patent: February 25, 1992Assignee: Totoku Electric Co., Ltd.Inventors: Yuzo Yamazaki, Toshiro Nishizawa
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Patent number: 5061515Abstract: The present invention is directed to lacquer binders containing polyvinyl acetal which are suitable for the formation of films and coatings and contain mixtures ofa) polyvinyl acetals andb) organic compounds containing (i) carbodiimide and/or uretone imine groups and (ii) blocked isocyanate groups,the mixtures containing from 1 to 300 parts by weight of component b) per 100 parts by weight of component a).The invention is also directed to a process for the formation of coatings on heat resistant substrates by coating these substrates with a coating composition containing binder, inert solvent and optionally the conventional auxiliary agents and additives used in lacquer technology, followed by curing of the coating at temperatures above about 80.degree. C., characterized in that the coating compositions used contain binders of the type mentioned above. Finally, the present invention is directed to these coated heat resistant substrates.Type: GrantFiled: April 5, 1990Date of Patent: October 29, 1991Assignee: Bayer AktiengesellschaftInventors: Willi Dunwald, Hans Schlegel
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Patent number: 5042143Abstract: An implantable electrode of the type in which an elongated wire coil forms the electrode surface. The electrode coil is mounted around an insulative lead body and is stabilized on the lead body by means of a plastic filler between the individual turns of the electrode coil, extending radially outwardly to approximately one-third of the diameter of the electrode coil wire. The filler is produced by stretching a portion of the lead body which normally displays an outer diameter greater than the inner diameter of the electrode coil, sliding the electrode coil over the lead body and inserting a mandrel into the lead body to urge the lead body into contact with the electrode coil. This assembly is heated to encourage flow of the lead body into the spaces between the electrode coil to stabilize the coil on electrode body and to prevent fibrotic ingrowth around the electrode coil wire.Type: GrantFiled: February 14, 1990Date of Patent: August 27, 1991Assignee: Medtronic, Inc.Inventors: Timothy W. Holleman, Sandra F. Viktora
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Patent number: 5034372Abstract: An improved method for producing superconductive oxide substance, wherein a solution containing therein a plurality of elements to constitute the superconductive oxide substance is atomized into mists, then the thus atomized mists are transported on a carrier gas into a chemical reaction device, and, after the chemical reaction in this chemical reaction device, the superconductive oxide substance is deposited on a substrate in a desired shape, with further heat-treatment of the thus deposited superconductive oxide substance in an oxygen-containing atmosphere at a temperature ranging from 200.degree. C. to 1,200.degree. C.Type: GrantFiled: December 7, 1988Date of Patent: July 23, 1991Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shigeru Matsuno, Yoshio Kubo, Kiyoshi Yoshizaki, Mitsunobu Wakata, Syouji Miyashita, Fumio Fujiwara
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Patent number: 5008998Abstract: The invention provides a mounting method by which a flat coil formed by winding an insulator layer and a metal foil sheet in layers can be mounted readily and with certainty on a circuit board. In mounting a flat coil on a circuit board, at first a pair of terminal portions each composed of a layer of solder are formed at a first end portion and a last end portion of the flat coil such that they extend in an axial direction of the coil, and then the coil is disposed on the circuit board such that the terminal portions thereof may be opposed in a perpendicular relationship to connecting faces of a conductor pattern on the circuit board. After then, the coil and the circuit board are heat processed to cause solder material applied to the connecting portions of the conductor pattern to adhere to faces of the terminal portions over the full extent of the axial length of the flat coil to interconnect the connecting faces of the conductor pattern and the terminal portions of the flat coil.Type: GrantFiled: November 22, 1989Date of Patent: April 23, 1991Assignee: Sony CorporationInventors: Shigetaka Higuchi, Isao Noguchi, Tohru Odashima
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Patent number: 4990359Abstract: A method for rendering uniform a coating applied to a substate is provided which redistributes a flowable non-uniformly applied coating with electrostatic forces after the coating has been deposited and before it solidifies. An electrostatic charging station charges the coating which, in the illustrated embodiment, is an insulative dip coating on a running length of rectangular conductive wire, as the wire emerges from a coating tank. The charged coating is passed to a coating redistribution station where shaped charged electrodes positioned to coincide with geometric high or low prints on the wire surface attract or repel coating material to cause it to flow from the more thickly to the more thinly coated regions. The redistributed coating is then dried at a drier station.Type: GrantFiled: November 13, 1989Date of Patent: February 5, 1991Assignee: Nordson CorporationInventor: Alan J. Knobbe