Patents Examined by Michael D. Switzer
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Patent number: 5384684Abstract: An MF capacitor of an oil impregnation type, whose durability in constant voltage application is so high that it is suitable for practical use. The metallized plastic film is impregnated with an electrically insulating oil composition obtained by adding 5-80% by weight of natural fatty acid triglyceride which contains a less amount of fatty acid ester having free hydroxyl radical to an aromatic hydrocarbon having a specific chemical structure and being liquid at -30.degree. C.Type: GrantFiled: August 6, 1993Date of Patent: January 24, 1995Assignee: Nippon Petrochemicals Company, LimitedInventors: Kunio Sugisawa, Hiroyuki Hoshino, Shozo Hayashi
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Patent number: 5383089Abstract: An electrode for a rechargeable electrical energy storage device has a substrate and an electrochemically active material deposited on the substrate. The electrochemically active material provides electron transfer between itself and an electrolyte. The electrochemically active material is a mixed-valence complex containing at least two metal atoms and at least one ligand attached to the metal atoms, and has metal-to-metal bonds where the metals exist in multiple oxidation states such that electron transfer between the metal atoms in the complex or between discrete complexes occurs. A rechargeable electrical energy storage device (20) has two electrodes (28, 36) constructed from a mixed-valence complex (30), and the electrodes are electrically connected by an ion carrying electrolyte (32). The electrodes are also physically separated from each other by a barrier (34) that will pass ions but not electrons.Type: GrantFiled: May 10, 1993Date of Patent: January 17, 1995Assignee: Motorola, Inc.Inventors: Melanie Williams, James L. Davis
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Patent number: 5380988Abstract: A heated mat structure provides a plurality of thin heated mats, each releasably interconnected in electrical parallel through an electrical powering system providing low voltage current. Each heated mat comprises relatively thin rectilinear laminated structure, having a rigid back panel with fastening means for positional maintenance, supporting a thin heating lamina having an element formed of electrically resistive metallic foil imbedded in plastic sheet material which in turn supports an outer surfacing lamina having an exposed surface of high friction material to prevent slipping. The laminae may carry plastic sheet material between adjacent surfaces and about peripheral edges to aid interconnection and isolation. All adjacent structural surfaces are mechanically joined. Each pad provides an electrical connector communicating spacedly from interconnection with its foil heating element.Type: GrantFiled: December 23, 1993Date of Patent: January 10, 1995Inventor: C. William Dyer
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Patent number: 5381300Abstract: A capacitive micro-sensor includes a sandwich of three silicon wafers, a peripheral stripe of each surface of the central plate being assembled to a corresponding stripe of an opposing external plate through an insulating layer. At least one of the external plates forms a first electrode, the central plate forms a second electrode and at least one portion of the central plate forms a variable capacity with at least one of the external layers. At least one of the insulating layers is formed by a sandwich of a first insulating layer, a conductive layer and a second insulating layer, the conductive layer being associated with connection means.Type: GrantFiled: February 19, 1993Date of Patent: January 10, 1995Assignee: Sextant AvioniqueInventors: Isabelle Thomas, Pierre O. LeFort, Christophe Legoux
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Patent number: 5381299Abstract: A silicon capacitive pressure sensor is disclosed having a silicon substrate and a silicon diaphragm separated by a glass dielectric spacer. The substrate has an upper surface formed as a mesa which is generally curved in shape, the curvature being concave. Due to manufacturing constraints the mesa upper surface comprises a series of concentric rings that approximate the desired concave shape. The step height and diameter of the rings are such that, at full deflection of the diaphragm, the diaphragm touches the center of the mesa, but not the edges of the individual steps. That is, letting the edges or corners of the steps define a curve, the radius of curvature of the diaphragm is smaller than the radius of curvature of the locus of the step corners.Type: GrantFiled: January 28, 1994Date of Patent: January 10, 1995Assignee: United Technologies CorporationInventors: Paul L. Provenzano, James L. Swindal, Robert J. Kuhlberg, Charles B. Brahm, Harold D. Meyer, Frank W. Gobetz, Walter J. Wiegand, Robert H. Bullis
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Patent number: 5379181Abstract: A smoothing device for a power supply is provided comprising a rectifier for rectifying an output of an alternating current power supply and at least a pair of electrolytic capacitors for smoothing an output of said rectifier. The pair of electrolytic capacitors have a non-polarized structure in which a pair of electrode foils each having an oxide film on a surface are wound into a roll with a separator containing an electrolyte interposed therebetween. A pair of electrodes are connected to each of said pair of electrode foils. At least one of the pair of electrodes has a mark for distinguishing them from each other. The pair of electrolytic capacitors are so connected that magnetic fluxes generated by said electrode foils are cancelled with each other.Type: GrantFiled: December 31, 1992Date of Patent: January 3, 1995Assignee: Jelmex Co., Ltd.Inventor: Kazuo Ishii
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Patent number: 5379180Abstract: A capacitor comprising a polyethylene 2,6-naphthalate film as a base film, a coating layer, formed on at least one surface of said base film, which coating layer comprises a water-soluble or water-dispersible resin and has a center line average surface roughness (Ra) of 0.005 to 0.5 .mu.m, and a metal layer deposited on said coated polyethylene 2,6-naphthalate film, wherein said coated polyethylene 2,6-naphthalate film has an F5 value in a machine direction of at least 1.5.times.10.sup.8 Pa, a Young's modulus in a machine direction of at least 5.9.times.10.sup.9 Pa, and a Young's modulus in a transverse direction of at least 5.9.times.10.sup.9 Pa, which capacitor has good moist-heat resistance and long-term stability.Type: GrantFiled: August 11, 1993Date of Patent: January 3, 1995Assignee: Diafoil Hoechst Company, LimitedInventor: Shin-ichi Kinoshita
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Patent number: 5377073Abstract: A stacked type solid electrolytic capacitor has a plurality of single plate capacitors each constituted by a dielectric oxide film, a solid electrolytic film and a negative electrode layer sequentially laminated on a surface of a positive electrode member having a positive electrode section. A metal spacer which has a thickness corresponding to each of spaces between the positive electrode sections is placed in each of the spaces. The metal spacers and the positive electrode sections are mechanically and electrically interconnected by welding. The invention may be embodied in a stacked electrolytic capacitor of a lead type or that of a chip type. The invention provides capacitor in which the size is reduced and the capacity is increased, the possibility of deterioration in electrical characteristics during the fabrication process is eliminated, and the process of fabrication is made easy.Type: GrantFiled: January 25, 1993Date of Patent: December 27, 1994Assignee: NEC CorporationInventors: Takashi Fukaumi, Yoshihiko Saiki, Toshihiko Nishiyama, Satoshi Arai
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Patent number: 5375034Abstract: A silicon capacitive pressure sensor is disclosed having a silicon diaphragm and a silicon substrate arranged in parallel and separated by a glass dielectric spacer. The glass is deposited onto a surface of the substrate using an ion milling machine. The sensor further includes a transition piece attached to a second layer of glass insulator disposed between the silicon diaphragm and the transition piece. The transition piece has a throughbore formed therein for applying a fluid to a surface of the silicon diaphragm, the fluid having a pressure desired to be measured by the sensor. The glass disposed between the diaphragm and the transition piece is deposited onto the transition piece using the ion milling process.Type: GrantFiled: December 2, 1993Date of Patent: December 20, 1994Assignee: United Technologies CorporationInventors: Arthur G. Foyt, Paul L. Provenzano, James L. Swindal, Robert A. Wagner
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Patent number: 5369546Abstract: In an electric double layer capacitor, a pair of conductive layers are formed on a pair of electrically insulating substrates, respectively.A pair of polarizable electrodes are sandwiched between the conductive layers and an ionically conducting separator is interposed between the polarizable electrodes. The polarizable electrodes are preferably made of activated carbon/polyacene composite.This invention realizes to form a plurality of elements electrically insulated on the same substrate, because it is possible to form the electric double layer capacitors using the electrically insulated substrate. More, it is possible to arrange a plurality of elements in line on the same substrate by designing conductive layers forming on the electrically insulating substrates, so that the electric double layer capacitors of which breakdown voltage is high and the height is low are obtained.Type: GrantFiled: February 25, 1993Date of Patent: November 29, 1994Assignee: NEC CorporationInventors: Takashi Saito, Yukari Shimizu, Junji Tabuchi
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Patent number: 5363272Abstract: A capacitor apparatus incorporating a fuse incorporates a capacitor device having a first electrode and a second electrode; a fuse whose one end is connected to the first electrode; a first lead terminal connected to the other end of the fuse; a second lead terminal connected to the second electrode; and resin in which the capacitor device, fuse, and a part of the first and second lead terminals are molded. According to such features, fuming and ignition of the capacitor device due to an excessive current therethrough can be prevented without fail.Type: GrantFiled: November 25, 1991Date of Patent: November 8, 1994Assignee: Rohm Co., Ltd.Inventors: Eisaku Tanaka, Choujirou Kuriyama
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Patent number: 5361187Abstract: Ceramic dielectric compositions for manufacturing multilayer ceramic capacitors (MLCC's) having very high dielectric constants between about 8,000-19,000 and meeting the Z5U and Y5V EIA (Electronic Industries Association) specifications for temperature coefficient of capacitance, are prepared from barium titanate host materials based upon the formulation (Ba.sub.1-x Ca.sub.x) (Ti.sub.1-y-z Sn.sub.y Zr.sub.z)O.sub.3, and doped with small amounts of niobium, manganese, lanthanum, zirconium and yttrium oxides to alter the dielectric spectrum so as to meet desired EIA specifications.Type: GrantFiled: March 11, 1993Date of Patent: November 1, 1994Assignee: Ferro CorporationInventor: Thallam T. Srinivasan
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Patent number: 5359179Abstract: A band and/or strip heater assembly which enables the terminal end portions of the electrical heating element to be readily exposed so as to be easily accessible for later connection to any one of a wide variety of lead/terminal connections. The assembly comprising a heater element having a plurality of end portions associated therewith, electrical insulation material positioned in surrounding relationship on at least two sides of the heater element, a housing member enclosing the heater element and insulation material, an opening extending through at least a portion of the insulating material located adjacent one side of the heater element and through at least a portion of the housing member, the heater element end portions extending through such openings so as to be readily exposed exterior of the housing member. This construction enables the basic heater unit to be fully fabricated and assembled without attaching a particular style of lead/terminal connection thereto.Type: GrantFiled: December 29, 1992Date of Patent: October 25, 1994Assignee: Watlow Electric Manufacturing CompanyInventors: George B. Desloge, Raymond H. Fiehler, Keith M. Gegg, Steven M. Klump
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Patent number: 5357399Abstract: A method of simultaneously forming a multiplicity of surface mountable solid state capacitors is disclosed.Type: GrantFiled: September 25, 1992Date of Patent: October 18, 1994Assignee: AVX CorporationInventor: Ian Salisbury
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Patent number: 5357083Abstract: In a method of manufacturing a plastics material sleeve fitted with a heating wire and intended for producing an electric resistance welding connector the sleeve is molded to a cylindrical shape delimited by an outside surface and an inside surface; a helical groove is formed in one of these two surfaces of the sleeve; a wire is placed in the groove; and the plastics material heated by means of the wire is smoothed so as to cover the wire totally and close the groove. The electric resistance welding sleeve obtained in this way is in particular intended to be used either without overmolding it as an ordinary sleeve in particular for welding water pipes or after overmolding it as an electric resistance welding connector in particular for gas pipes.Type: GrantFiled: May 21, 1992Date of Patent: October 18, 1994Assignees: Boulet D'Auria, Terlizzi & Cie, Gaz De FranceInventor: Vincent S. B. D'Auria
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Patent number: 5351164Abstract: A double layer electrolytic capacitor of two electrodes each in contact with a common electrolyte. At least one of the electrodes is comprised of a crystalline material characterized by the presence of van der Waals channels in the material. These van der Waals channels are adapted to accommodate the electrolyte within the channels, such that a double layer of charge is formed at interfaces of the van der Waals channels and the electrolyte when a voltage is applied between the two electrodes.Type: GrantFiled: October 29, 1992Date of Patent: September 27, 1994Assignee: T.N. Frantsevich Institute for Problems in Materials ScienceInventors: Ivan I. Grigortchak, Kornei D. Tovstjuk, Zahar D. Kovalyuk, Ivan D. Kozmik, Bogdan P. Bahmatyuk
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Patent number: 5347104Abstract: A heater control circuit is provided to control the heating condition of a cooking oven by means of a triac. In the heater control circuit, an electrical heater is incorporated. The heater further has a switch which is electrically connected in series with the heater so as to actuate and deactuate the heater in combination with on-off operation of the switch. A control relay is electrically connected in series with the triac and the heater to be actuated and deactuated in association with on-off operation of the switch so as to break an electrically conductive path through the triac.Type: GrantFiled: May 21, 1992Date of Patent: September 13, 1994Assignee: Rinnai Kabushiki KaishaInventors: Makoto Morishima, Yoshihiro Kanaya
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Patent number: 5347106Abstract: The mirror assembly uses a reflective coating as a heating element for preventing fog formation on a mirror exposed to a humid environment such as is found in a bathroom. As compared to other typically reflective mirror coatings, the coating used in this invention has a relatively high resistance. The coating may be split into separate conductive elements with one or more scribe lines in order to control the length of the conductive path from inlet bus to outlet bus. The buses are made from an ultra thin foil tape which can be adhered to the reflective coating and which is solderable for securement of power lines thereto. The bus tape possesses both in plane and through plane conductive characteristics and can simply be cut to any length desired for the mirror sizes being produced.Type: GrantFiled: January 13, 1992Date of Patent: September 13, 1994Inventors: Carl A. Reiser, Richard D. Sawyer
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Patent number: 5343021Abstract: A heater that has a plate shaped substrate with two holes penetrating through the substrate. Both holes are at one end of the substrate. The heater has a heating film mounted on the surface of the substrate for generating heat. The film is made of electrically conductive material and formed into a stripe shape having a first end and a second end. The first end is located near the hole. The heater also has an end film coated on the surface of the heating film around the hole and electrically connected with the heating film for supplying electric power to the heating film. The end film has higher electrical conductivity than the heating film. The substrate has means provided at the hole for supplying the electric power to the end film. The hole enables high reliability in electrical connection between the outer terminal and the heater because of the hole and the electric power supply means at the hole.Type: GrantFiled: April 27, 1993Date of Patent: August 30, 1994Assignee: Toshiba Lighting & Technology CorporationInventors: Shigehiro Sato, Yoshiyuki Matsunaga, Tsuyoshi Ono
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Patent number: 5343353Abstract: A microminiature, large capacitor for a semiconductor memory is formed from a raw material compound of plural different kinds of metal atoms for deposition, irrespective of the material, temperature and surface condition of a substrate, thereby forming a thin dielectric film having uniform characteristics not affected by the interface even though the film is made as thin as approximately 0.1 .mu.m. The microminiature large capacitance capacitor has a capacitance unaffected by an oxide existing at the interface between a ferroelectric and electrodes without using precious metals such as platinum having the least degree of freedom in deposition of thin films and microminiature processing. The ferroelectric thin film is deposited using an organic metal comprising a plurality of kinds of metal elements in conformity with the composition of a desired dielectric. As electrodes for use in forming a capacitor, a substance exhibiting conductivity after oxidation is preferably employed.Type: GrantFiled: August 17, 1992Date of Patent: August 30, 1994Assignee: Hitachi, Ltd.Inventors: Hiroshi Miki, Yuzuru Ohji, Shinichi Tachi, Keiichi Kanehori