Patents Examined by Bruce A. Reynolds
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Patent number: 5450055Abstract: A chip resistor is provided which comprises: an electrically insulating substrate chip having a top surface, an opposite pair of end faces, and an opposite pair of side faces; a resistor element formed on the top surface of the chip intermediate the end faces of the chip; a coating for covering the resistor element; a spaced pair of main electrodes formed on the top surface of the chip adjacent to the respective end faces of the chip in conduction with the resistor element; a spaced pair of auxiliary electrodes formed on the respective main electrodes; a pair of end electrodes formed on the respective end faces of the chip in conduction with the main and auxiliary electrodes; and a metallic plating formed on the auxiliary and end electrodes. Each of the main and auxiliary electrodes is spaced inwardly from the respective side faces of the chip.Type: GrantFiled: August 26, 1993Date of Patent: September 12, 1995Assignee: Rohm Co., Ltd.Inventor: Masato Doi
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Patent number: 5450278Abstract: A chip type capacitor with a multi-layer structure comprising a plurality of inner electrodes classified into two groups one being used as parts of signal lines and the other being connected to grounded lines. Each of the inner electrodes for radio frequency passages has a pair of inwardly extending recesses adapted to make current flows generated in the inner electrode by radio frequency noise be opposite to each other. Each of at least two grounded inner electrode pairs is interposed between vertically adjacent inner electrodes used as parts of signal lines. The inner electrodes of each pair are connected to ground terminals, respectively, and have a shape formed by removing one protruded grounding portion from a cross shape.Type: GrantFiled: December 30, 1992Date of Patent: September 12, 1995Assignees: Electronics and Telecommunications Research Institute, Korea Telecommunication AuthorityInventors: Chang H. Lee, Suk J. Lee, Sang S. Lee, Tae G. Choy
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Patent number: 5448447Abstract: A process for producing capacitor grade powder, electrodes, and finished capacitors therefrom having reduced electrical leakage characteristics. The powder is prepared by reacting Group V-B base materials with quantities of between 500 to 7000 ppm of nitrogen and 700 to 3000 ppm of oxygen. Electrical leakage is reduced by at least 28% for electrodes anodized at 100 volts or greater in comparison with electrodes and finished capacitors made from undoped materials. A range of specific charge of up to 25,000 uFV/g is achieved for sintering temperatures of 1400.degree. C. to 1800.degree. C.Type: GrantFiled: April 26, 1993Date of Patent: September 5, 1995Assignee: Cabot CorporationInventor: Hongju Chang
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Patent number: 5448444Abstract: A silicon capacitive pressure sensor is disclosed that has a glass dielectric material sputter-deposited onto a silicon substrate of the sensor. After deposition of the bulk dielectric material, the glass is patterned and etched to form a pair of concentric rings. An inner ring is of a circular shape, while the outer ring is of an octagonal shape. As compared to prior art dielectric spacers which are of a single ring of relatively wide thickness, the pair of concentric rings disclosed herein significantly reduce the parasitic capacitance of the glass dielectric material, thereby increasing the sensitivity of the sensor.Type: GrantFiled: January 28, 1994Date of Patent: September 5, 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: 5448040Abstract: A roller for furnaces, is used with a plurality of rollers substantially parallel to each other. The roller is provided with a plurality of annular collars which are side by side and spaced apart. The annular collars are cooled by means of a flow of cooling fluid which is oriented transversely with respect to their axis and parallel to their median plane. The annular riders are made in tubular form and may be of toroidal form and are connected separately each to the supply duct and to the return duct for the cooling fluid. They may also be formed by the individual turns of a tubular spiral or by a number of successive segments of a spiral which are connected via their ends to the supply duct and to the return duct.Type: GrantFiled: July 18, 1994Date of Patent: September 5, 1995Assignee: Italimpianti S.p.A.Inventors: Stefano Deplano, Roberto Millone, Maurizio Patrone
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Patent number: 5448448Abstract: An aluminum electrolytic capacitor has a large cylindrical hole in a core portion thereof. The anode and cathode foils and electrolyte-containing papers are rolled with less tension for an initial predetermined number of turns than for the later turns. Instead of forming the hole large, a core portion is formed by rolling the electrolyte-containing papers and either the anode foil or the cathode foil, or neither of them.Type: GrantFiled: June 4, 1992Date of Patent: September 5, 1995Assignee: Canon Kabushiki KaishaInventors: Yoshichika Fujiwara, Toshinori Watabe, Hiroshi Uchida
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Patent number: 5448445Abstract: A reduced size three-terminal type capacitor for removing jamming signals from an electrical signal. The three-terminal type capacitor comprises a ceramic substrate with a first ground electrode layer formed on the ceramic substrate, and a first dielectric layer formed on the first ground electrode layer. On the first dielectric layer reaching at least from one end of the first dielectric layer to the other end is a signal electrode. A second dielectric layer is formed on the first dielectric layer to surround the signal electrode together with the first dielectric layer, and a second ground electrode layer is formed on the second dielectric layer together with the first ground electrode layer. The second ground electrode layer is electrically connected to the first ground electrode layer. The structure of this three-terminal capacitor is such that first and second conductive layers (i.e.Type: GrantFiled: March 4, 1994Date of Patent: September 5, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazunori Yamate, Chikara Watanabe, Youichi Ishibashi
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Patent number: 5448041Abstract: A process for assembling at least two parts made from a composite material incorporating a ceramic or vitroceramic matrix reinforced by ceramic fibers. A continuous connection between these parts is achieved by approaching two of the parts along their respective edges to be assembled, forming a joint between the two parts by sewing with a tie or link of ceramic fibers from each of the parts to be assembled and heating the joints by a heating device employing a powerful and extremely localized heating until the two parts are welded together.Type: GrantFiled: June 10, 1993Date of Patent: September 5, 1995Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "SNECMA"Inventors: Joel. M. D. Benoit, Gilles J.-M. Bessenay, Gerard P. Gauthier
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Patent number: 5446264Abstract: A honeycomb heater has an integrated honeycomb structure obtained by connecting in series, via conductive plates, a plurality of honeycomb structure elements each having a large number of passages and each generating heat when electrified. At least two electrodes are provided on the integrated honeycomb structure for enabling the electrical heating thereof.Type: GrantFiled: February 22, 1993Date of Patent: August 29, 1995Assignee: NGK Insulators, Ltd.Inventors: Tomoharu Kondo, Fumio Abe
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Patent number: 5446259Abstract: A method for producing opto-electronic devices, such as opto-mechanical mouse devices, which includes adjusting a detector signal after a detector and emitter are connected to the remaining circuitry associated with the opto-electronic device. The method also includes a rough adjustment step wherein a the detector signal is adjusted to a predetermined output voltage, and a fine adjustment step wherein an encoder is rotated between the emitter and the detector, and the circuit is adjusted such that the duty cycle of a comparator is within a desired range.Type: GrantFiled: June 2, 1993Date of Patent: August 29, 1995Assignee: Alps Electric (U.S.A.), Inc.Inventor: Keith A. Engstrom
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Patent number: 5446258Abstract: A process for remelting metal surfaces, in particular, camshafts, using a laser. The invention shortens the cycle times and further increases cost-effectiveness by not requiring remelting in a plurality of steps. The process uses a laser beam which is focused to a rectangle. The length of the beam spot extends over the entire width of the workpiece surface of the cam. The power density and relative speed are set in order to achieve the desired remelting depth.Type: GrantFiled: September 24, 1993Date of Patent: August 29, 1995Assignee: MLI LasersInventor: Barry L. Mordike
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Patent number: 5444732Abstract: An object of the present invention is to provide an ingot wherein occurrence is prevented when an electroslag remelting method is used for producing a large ingot and which a super alloy is sensitive to segragation. According to the present invention, the electrode for electroslag remelting method has a hole formed along an axial direction in the core of an electrode. Therefore, the molten pool is made shallow so that flat and segregation is prevented from occurring. Consequently, an ESR ingot of good quality is accomplished with an excellent surface and is free from segregation. Moreover, an electrode melting rate is increasing and efficiency is improved.Type: GrantFiled: May 17, 1994Date of Patent: August 22, 1995Assignee: The Japan Steel WorksInventors: Tomoo Takenouchi, Yoshiaki Ichinomiya, Junji Ishizaka, Junji Itagaki, Shuzo Ohhashi, Tsukasa Azuma, Yasuhiko Tanaka
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Patent number: 5444600Abstract: A capacitor is provided including first and second electrodes formed from portions of the lead frame structure used in conventional integrated circuit packaging. The electrodes are encapsulated with dielectric molding material which provides dielectric insulation between the electrodes. A low power capacitively-coupled digital isolator circuit is also provided. The circuit employs a pair of the lead frame capacitors of the present invention and includes differential driver and receiver circuits. The receiver can also include an optional filter for increasing noise and glitch immunity.Type: GrantFiled: December 3, 1992Date of Patent: August 22, 1995Assignee: Linear Technology CorporationInventors: Robert C. Dobkin, Robert L. Reay
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Patent number: 5444734Abstract: A combination of a spray cooled roof having a central opening, a support member and mast post wherein the roof is provided with an engagement which are detachably engaged to the corresponding engagement affixed to a support arm assembly which extends over a closed part of the roof. The support member is coupled to the mast post which raises, lowers and laterally moves the roof.Type: GrantFiled: February 18, 1993Date of Patent: August 22, 1995Assignee: UCAR Carbon Technology CorporationInventors: Mark T. Arthur, Frank H. Miner, Jr.
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Patent number: 5444813Abstract: In order to simplify mounting and rearrangement of the infra-red lamps, and to minimize the size of unheated zones, an assembly plate (1) is formed with a pattern of assembly apertures (3) having at least three-fold symmetry. The bases (2) of the lamps (6) are formed with electrical passages (4) and fastening holes (5) whose spacing is compatible with the assembly aperture pattern. The electrical terminals are formed as contact pins (17) which project perpendicular to the quartz glass tube axis, set back from the ends (8,9) thereof, and make contact with a power supply in the electrical passages (4) in the bases (2). Multiple infra-red lamps (6) can thus be mounted closely adjacent to each other on the assembly plate (1), and the mounting configuration can be changed, e.g. by 90.degree. rotation of a lamp, with minimal rewiring effort. The completed system is suitable for surface heating or drying of products passing by on a conveyor belt or other production line.Type: GrantFiled: March 31, 1993Date of Patent: August 22, 1995Assignee: Heraeus Noblelight GmbHInventors: Ronald Stehling, Karl Schulke
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Patent number: 5444599Abstract: A capacitor having high stability with temperature comprising a cylindrical metal body, a cylindrical high tension electrode coaxial with the body and placed inside it, and at least two low tension electrodes constrained to remain in contact against the inside wall of the body via an intervening insulating layer, said electrodes being disposed symmetrically about the geometrical axis of the body, said low tension electrodes being held in place by retaining means that allow them to expand freely, the dielectric medium extending between the high tension electrode and the low tension electrodes being a gas or a vacuum, the expansion coefficient .alpha.c of the body being equal to the expansion coefficient .alpha.h of the high tension electrode, and the expansion coefficient .alpha.c of the body material being related to the expansion coefficient .alpha.b of the material of the low tension electrodes by the following inequalities:1.5<.alpha.b/.alpha.c<2.Type: GrantFiled: May 12, 1994Date of Patent: August 22, 1995Assignee: GEC Alsthom T & D SAInventors: Jean-Pierre Dupraz, Jean-Paul Gris, Daniel Trenchat
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Patent number: 5444733Abstract: Electric arc furnace with alternative sources of energy, which functions with direct current or alternating current and comprises at least one lance (12) to inject pure or combined oxygen above the bath (16) and a plurality of tuyeres (13) positioned in the hearth of the furnace (10) to inject oxygen below the bath, the tuyeres (13) being cooled by a peripheral movement of a cooling mixture consisting of at least one gas having a high cooling power (methane, butane, inert gases, etc.) and of at least one diluting gas (nitrogen, carbon dioxide), pipes (15) being included to introduce additives and powdered coal, post-combustion burners (28) possibly being comprised, the tuyeres (13) including an oxygen delivery pipe (18) having a diameter greater than 8 mm., the oxygen pressure being capable of being modulated according to the working steps, there being a constant minimum pressure of delivery.Type: GrantFiled: May 4, 1994Date of Patent: August 22, 1995Assignee: Danieli & C. Officine Meccaniche SpAInventors: Giovanni Coassin, Corrado De Cecco, Gianni Gensini, Sergio Gerussi
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Patent number: 5442516Abstract: A capacitor structure which provides improved electrical performance, utilizing a segmented plate and varied registration alignment. A method for providing improved electrical performance in a capacitor, utilizing a segmented plate structure with varied registration alignment.Type: GrantFiled: January 3, 1994Date of Patent: August 15, 1995Inventor: J. Peter Moncrieff
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Patent number: 5442154Abstract: A safety device for use with a laser beam (5) passing from a source (1) along a given optical path which optionally includes mirrors (M1-M5), in conjunction with a beam control signal processing network. The processing network includes at least one removable signal blocking element (10, 10') located on the optical path and at least partially consisting of a signal conductor (16, 18, 19) surrounding said beam (5) for co-operating therewith in order to cut off the signal instantaneously and block the beam should any deflection occur.Type: GrantFiled: December 10, 1993Date of Patent: August 15, 1995Assignee: Lectra SystemsInventors: Michel Philippe, Benoit Soulignac
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Patent number: 5442156Abstract: Apparatus for applying heat to a patch on a composite structure repair site is disclosed. The apparatus includes a sealed bladder containing both a thermally conductive fluid and a heating element in thermal contact with the fluid. The heating element which comprises a flexible sheet having an electrical resistance wire uniformly placed thereon can be immersed in the fluid or otherwise in direct thermal contact therewith. Electrical power is applied to the heating element by conductors passing through the bladder surface. The heating element of disclosed structure can be attached to seal the bladder interior into two reservoirs, to permit fluid flow throughout the bladder or to form at least one outer surface of the bladder. Flexible supports can also be attached from the heating element to an interior bladder surface to maintain spacing between the heating element and the surface.Type: GrantFiled: February 16, 1993Date of Patent: August 15, 1995Assignee: The Boeing CompanyInventors: Everett A. Westerman, Phillip E. Roll