Resistance Element Surrounds Terminal Patents (Class 338/331)
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Patent number: 11791070Abstract: An NTC thermistor element is of less than 0402 size. A first internal electrode is connected to a first external electrode. A second internal electrode is separated from the first internal electrode and is connected to a second external electrode. A third internal electrode opposes the first and second internal electrodes and is not connected to the first external electrode and the second external electrode. A shortest distance between the first internal electrode and the third internal electrode and a shortest distance between the second internal electrode and the third internal electrode are smaller than a shortest distance between the first internal electrode and the second internal electrode, a shortest distance between the first external electrode and the third internal electrode, and a shortest distance between the second external electrode and the third internal electrode, and are less than or equal to ΒΌ the thickness of the thermistor body.Type: GrantFiled: September 28, 2020Date of Patent: October 17, 2023Assignee: TDK CORPORATIONInventors: Daisuke Tsuchida, Takehiko Abe, Yoshihiko Satoh, Koki Yamada
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Patent number: 11709103Abstract: The temperature sensor can have a core having a length extending between two ends, the core having a cavity extending along the length, a wire extending in the cavity, along the length, the wire fixed at both ends, the core having a transversal aperture at an intermediary location between the ends, the transversal aperture leading into the cavity, and a potting filling a portion of the cavity and supporting the wire at the intermediary location of the transversal aperture.Type: GrantFiled: May 20, 2020Date of Patent: July 25, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventor: Joseph Marone
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Patent number: 8973253Abstract: The object of the invention is to provide a method and an apparatus that allow production of metal plate chip resistors having a relatively low resistance with high accuracy and yield through simple process. The object is achieved by apparatus for manufacturing metal plate chip resistors including cutting mold for cutting intermediate product strip transversely to obtain worked product chip, ohm meter for measuring the resistance of the worked product chip, control device having a calculating part for performing a calculation using the resistance measured by the ohm meter to work out a width in which the strip is to be cut transversely so as to obtain a worked product chip of a desired resistance, and cutting width adjustor for making an adjustment so that the strip is to be cut transversely in the width obtained from the calculating part.Type: GrantFiled: November 8, 2013Date of Patent: March 10, 2015Assignee: Kamaya Electric Co., Ltd.Inventors: Tatsuki Hirano, Kazuo Tanaka
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Patent number: 8590141Abstract: The object of the invention is to provide a method and an apparatus that allow production of metal plate chip resistors having a relatively low resistance with high accuracy and yield through simple process. The object is achieved by apparatus 10 for manufacturing metal plate chip resistors including cutting mold 21 for cutting intermediate product strip 14 transversely to obtain worked product chip 16a, ohm meter 22 for measuring the resistance of the worked product chip 16a, control device 23 having a calculating part for performing a calculation using the resistance measured by the ohm meter 22 to work out a width in which the strip 14 is to be cut transversely so as to obtain a worked product chip of a desired resistance, and cutting width adjusting means 26, 27 for making an adjustment so that the strip 14 is to be cut transversely in the width obtained from the calculating part.Type: GrantFiled: August 2, 2011Date of Patent: November 26, 2013Assignee: Kamaya Electric Co., Ltd.Inventors: Tatsuki Hirano, Kazuo Tanaka
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Patent number: 8550611Abstract: A heater for use in a phase change ink printhead reservoir is provided that includes a first insulating layer having at least one ink supply path opening, and a second insulating layer having at least one ink supply path opening that aligns with the at least one ink supply path opening in the first insulating layer. The heater includes a resistance heating trace arranged in a serpentine pattern between the first and the second insulating layers. The resistance heating trace is configured to receive electric current and to convert the electric current to heat. The resistance heating trace includes a trace ring for each ink supply path opening in the first and second insulating layers that forms a continuous perimeter around the corresponding ink supply path opening.Type: GrantFiled: January 9, 2012Date of Patent: October 8, 2013Assignee: Xerox CorporationInventors: Nasser Alavizadeh, Christopher Jon Laharty, Chad Johan Slenes
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Patent number: 8492682Abstract: A micro heater includes a first electrode, a second electrode, a first carbon nanotube, and a second carbon nanotube. The first carbon nanotube extends from the first electrode. The second carbon nanotube branches from the second electrode. The first carbon nanotube and the second carbon nanotube intersect with each other to define a node therebetween.Type: GrantFiled: December 30, 2010Date of Patent: July 23, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xue-Shen Wang, Qun-Qing Li, Shou-Shan Fan
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Publication number: 20120293300Abstract: The present invention provides a low-resistance carbon grounding module and a method for manufacturing the same, which can increase strength for durability against external environmental changes by varying the type and mixing ratio of raw materials for a carbon resistor without using any heat source. The low-resistance carbon grounding module comprises a carbon resistor extending in the longitudinal direction thereof and a conductive core bar installed in the center of the transverse section of the carbon resistor, wherein the carbon resistor comprises graphite, cement, and feldspar. Thus, it is possible to prevent the durability from being deteriorated due to external environmental changes, water, or electrical resistance, thus improving the quality and reliability of the product while minimizing the production of CO2.Type: ApplicationFiled: May 16, 2012Publication date: November 22, 2012Applicant: OMNI LPS. CO., LTD.Inventor: Young-Ki CHUNG
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Patent number: 8092000Abstract: A heater for use in a phase change ink printhead reservoir is provided that includes a first insulating layer having at least one ink supply path opening, and a second insulating layer having at least one ink supply path opening that aligns with the at least one ink supply path opening in the first insulating layer. The heater includes a resistance heating trace arranged in a serpentine pattern between the first and the second insulating layers. The resistance heating trace is configured to receive electric current and to convert the electric current to heat. The resistance heating trace includes a trace ring for each ink supply path opening in the first and second insulating layers that forms a continuous perimeter around the corresponding ink supply path opening.Type: GrantFiled: January 19, 2009Date of Patent: January 10, 2012Assignee: Xerox CorporationInventors: Nasser Alavizadeh, Christopher Jon Laharty, Chad Johan Slenes
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Patent number: 7199016Abstract: An integrated circuit resistor is provided that comprises a mesa 14 between electrical contacts 16 and 18. The electrical resistance between electrical contacts 16 and 18 is selectively increased through the formation of recesses 20 and 22 in the mesa 14. The size of recesses 20 and 22 can be used to tune the value of the electrical resistance between contacts 16 and 18.Type: GrantFiled: August 13, 2004Date of Patent: April 3, 2007Assignee: Raytheon CompanyInventors: David D. Heston, Jon E. Mooney
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Patent number: 6392528Abstract: An electrical device which contains a first electrode, a second electrode, a third electrode, a first resistor which is connected in series between the first and second electrodes, and a second resistor which (i) is thermally coupled to the first resistor, (ii) exhibits anomalous resistance/temperature behavior, and (iii) is connected in series between the first and third electrodes.Type: GrantFiled: February 9, 1999Date of Patent: May 21, 2002Assignee: Tyco Electronics CorporationInventor: Inho Myong
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Patent number: 6163246Abstract: A chip-type electronic device has a sintered ceramic body formed by integrally sintering a plurality of ceramic layers, inner electrodes including first electrodes, second electrodes and a third electrode formed inside this sintered ceramic body and outer electrodes formed on both end surfaces of this sintered ceramic body. One end of each of the first electrodes is electrically connected to one of the outer electrodes. Each of the second electrodes is electrically connected to a corresponding one of the first electrodes through an associated one of throughholes through one of the ceramic sheets. The third electrode is electrically connected to the other of the outer electrodes and overlaps with the second electrodes as seen perpendicularly to the planar inner electrodes.Type: GrantFiled: May 31, 2000Date of Patent: December 19, 2000Assignee: Murata Manufacturing Co., Ltd.Inventors: Yukiko Ueda, Masahiko Kawase
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Patent number: 6157289Abstract: The invention presents a PTC thermistor which is high in adhesive strengths of inner- and outer-layer electrodes composed of metallic foil respectively stuck to conductive sheets, and has a larger current breaking characteristic. It contains a laminated body (13) which is formed by alternately laminating a plurality of conductive sheets (14) and an inner-layer electrode (11) composed of metallic foil having first plated layers (12) so that the conductive sheets (14) can become the outermost layers, an outer-layer electrode (18) positioned at the outermost layer of the laminated body (13), and having a second plated layer (16) on a side facing the inner-layer electrode (11), and side-face electrode layers 20) disposed at facing sides of the laminated body 913) for connecting electrically the inner-layer electrode (11) and outer-layer electrode (18).Type: GrantFiled: March 9, 1999Date of Patent: December 5, 2000Assignee: Mitsushita Electric Industrial Co., Ltd.Inventors: Junji Kojima, Kohichi Morimoto, Takashi Ikeda, Naohiro Mikamoto
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Patent number: 6124781Abstract: A battery protection device includes an upper foil electrode laminated to the upper surface of a conductive polymer PTC layer, and a lower foil electrode laminated to the lower surface of the PTC layer. An isolated portion of the lower electrode is formed by creating an annular isolation gap in the lower electrode. A first via is formed through the upper electrode, the PTC layer, and the isolated portion of the lower electrode. The diameter of the first via is smaller than the diameter of the isolated electrode portion, so that an annular area of the isolated electrode portion is left between the opening and the isolation gap. The internal wall surface of the first via and the annular electrode area are plated with a conductive metallization layer, which forms a first contact seat that is conductively connected by the metallized surface of the first via with the upper electrode. A first contact element is fixed to the first contact seat.Type: GrantFiled: September 29, 1999Date of Patent: September 26, 2000Assignee: Bourns, Inc.Inventors: Steven D. Hogge, Andrew Brian Barrett
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Patent number: 6108212Abstract: The surface-mount device package comprises a pad located on a face of the surface-mount device, a solder bump bonded to the pad, and a terminal spaced radially apart from the pad. A terminal surrounds the pad in at least one common plane that bisects the pad and the terminal. An electrically resistive volume intervenes between the pad and the terminal. The pad is electrically coupled to the terminal through the resistive volume. The terminal, the pad, and the electrically resistive volume cooperate to form a passive component associated with at least one device interconnection. The passive component preferable comprises an integral resistor. The integral resistor serves to eliminate or at least substantially reduce electrical resonances and reflections that may otherwise degrade the signal integrity.Type: GrantFiled: June 5, 1998Date of Patent: August 22, 2000Assignee: Motorola, Inc.Inventors: Lawrence E. Lach, Gregory J. Dunn, Daniel R. Gamota
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Patent number: 5990781Abstract: A chip type resistor includes terminal electrodes having main upper electrodes, extensions or enclaves of a resistive film formed on left and right sides of the upper surface of main upper electrodes, and auxiliary upper electrodes formed on upper surfaces of extensions or enclaves. Therefore, step between the upper surface of terminal electrodes at opposing ends of resistive film and an upper surface of cover coat covering the resistive film can be reduced or eliminated at a low cost.Type: GrantFiled: March 13, 1998Date of Patent: November 23, 1999Assignee: Rohm Co., Ltd.Inventor: Shigeru Kambara
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Patent number: 5973588Abstract: A composition material for use in manufacturing a varistor consists of the following constituents:a) zinc oxide,b) ceramic structure influencing additives selected from the group consisting of bismuth oxide, boric acid, chromium oxide, cobalt oxide, manganese oxide and tin oxide,c) a grain growth influencing additive selected from the group consisting of antimony oxide, silicon dioxide and titanium dioxide,d) an organic solvent carrier,e) an organic viscosity influencing additive, andf) an organic binder.The composition may serve as a ceramic ink for use in the manufacture of multilayer varistors, especially using a screen printing process.A multilayer varistor with pin receiving apertures has a plurality of electrode segments coplanar to each other surrounding the apertures.Type: GrantFiled: February 6, 1995Date of Patent: October 26, 1999Assignee: ECCO LimitedInventors: Stephen P. Cowman, Derek A. Nicker, John M. Shreeve
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Patent number: 5565838Abstract: The invention provides a varistor with sputtering terminations. In one aspect, the invention includes a varistor body with electrodes internal to the body except at spaced apart regions of the body, and sputtered terminations on the spaced apart regions of the body. In another aspect of the invention, embodiments include terminations comprised of metals from the from the group consisting of chromium, nickel, palladium, silver, tin, vanadium and mixtures thereof. In another aspect, embodiments of the invention include a passivation layer on outer surfaces of the varistor.Type: GrantFiled: May 16, 1994Date of Patent: October 15, 1996Assignee: AVX CorporationInventor: Ning-Huat Chan
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Patent number: 5560098Abstract: A method of making an electrical connection of a conductor (1) to a thick film track (2) mounted on a substrate (3) includes the steps of heating the conductor (1) to a temperature at which it may melt the glass constituent of the track (2), and inserting it into the track (2) such that it sinks in and contacts the metallic constituent of the track. The glass sets, fixing the conductor in place. Thus the need for a second firing operation is avoided.Type: GrantFiled: January 20, 1995Date of Patent: October 1, 1996Assignee: Central Research Laboratories LimitedInventor: Ian Robins
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Patent number: 5247277Abstract: An electrical device in which a first connection element is in electrical contact with a resistive element. The first connection element defines a cavity into which, when the cavity is empty, a second connection element can be inserted. The second connection element, which may be connected to a source of electrical power, is partially within the cavity, makes physical and electrical contact with the first connection element, and protrudes from the cavity. Such devices can be made in a continuous process by a method of the invention. They are particularly suitable for insertion into a circuit board.Type: GrantFiled: May 27, 1992Date of Patent: September 21, 1993Assignee: Raychem CorporationInventors: Shou-Mean Fang, Vijay K. Dhingra, Chi-Ming Chan, Daniel Chandler
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Patent number: 4445026Abstract: Electrical devices comprising a layer of a PTC conductive polymer and a sheet electrode in contact with each face of the PTC layer. The electrodes extend to the sides of the layer and the sides of the layer are concave, and this results in improved performance. Preferred devices are circuit control devices which protect a circuit from increases in current resulting from a fault.Type: GrantFiled: July 10, 1980Date of Patent: April 24, 1984Assignee: Raychem CorporationInventor: Jack M. Walker
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Patent number: 4438322Abstract: An electric heater assembly for tools having a removable heated tip includes a tubular metal base having an open end adapted to removably receive and hold the end of the tool tip. A coating of ceramic electrical insulation material is provided on a portion of the exterior of the base and a length of Nickel-Iron alloy resistance wire is wound on the ceramic coated portion. Electrical lead wires are connected in lapped relationship to the respective ends of the resistance wire. Each lead wire includes a first portion lying between several turns of resistance wire and the ceramic coating on the base and a second portion bent back and overlaying the several turns of resistance wire. The second portion is wrapped with at least one additional turn of the resistance wire. A coating of ceramic electrical insulation material is provided over the resistance wire and the terminals to seal the same from the deliterious effects of the atmosphere.Type: GrantFiled: June 16, 1981Date of Patent: March 20, 1984Assignee: Pace IncorporatedInventor: Frank Sylvia
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Patent number: 4334148Abstract: A self-regulating electrical heater comprised of a material which exhibits a positive temperature coefficient of resistance. The heater has a generally rectangular cross-section which provides greater thermal stability and reduces the number of hotline failures.Type: GrantFiled: January 16, 1978Date of Patent: June 8, 1982Assignee: Raychem CorporationInventor: Andrew J. Kampe
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Patent number: 4260872Abstract: A fast response ceramic ignitor which is particularly adapted for use with household current as a replacement for gas pilot lights, the ignitor being formed from pure lanthanum chromite, or lanthanum chromite which has been doped with combinations of niobium, magnesium, or strontium ions in quantities sufficient to provide desired electrical resistivity characteristics.Type: GrantFiled: March 13, 1978Date of Patent: April 7, 1981Assignee: General Refractories CompanyInventors: Franz J. Brodmann, Ronald Staut
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Patent number: 4164646Abstract: A current carrying member embedded in a brick-like member and having a wrapping comprising a flexible graphitic covering providing intimate contact with respect to the brick, also allowing the current carrying member and the brick to expand at different rates under conditions of heat while still retaining a very intimate electric contact.Type: GrantFiled: April 24, 1978Date of Patent: August 14, 1979Inventor: Frederick G. J. Grise
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Patent number: 4127934Abstract: An electrical circuit device having a substrate including circuit components on at least one side thereof and a plurality of through openings in the substrate. Terminal leads are positioned in the openings each with a deformation intermediate the ends of the leads and spaced internally of the opening from a soldered area at the juncture of the exposed portion of the leads and the termination edge of the substrate. Two methods of assembly of leads to the substrate are also disclosed.Type: GrantFiled: July 5, 1977Date of Patent: December 5, 1978Assignee: Allen-Bradley CompanyInventors: John E. Bartley, Orville R. Penrod, Lawrence D. Radosevich
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Patent number: 4112410Abstract: A heater comprising a metallic tubular sheath in which an elongate electrical center conductor is coaxially disposed therewithin. A fibrous, inorganic electrical insulation material is wrapped around the center conductor and an electrical resistance heating element surrounds the enwrapped center conductor, the heating element being coaxial with the center conductor and electrically connected thereto with the heating element and the conductor being adapted to be connected to a source of electrical power to energize the heating element. Other electrical insulation material is disposed between the heating element and the sheath to electrically insulate the heating element from the sheath and to provide a conductive heat transfer path between the heating element and the sheath. A method of manufacturing a heater is also disclosed.Type: GrantFiled: November 26, 1976Date of Patent: September 5, 1978Assignee: Watlow Electric Manufacturing CompanyInventors: Ronald M. Wrob, Jeffrey P. Melly
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Patent number: 4097718Abstract: A hair curler includes an apertured cylindrical shell about which hair to be curled is wound. Mounted within the shell are two semicylindrical mounting components which donfine between themselves a plurality of spaced apart pill-shaped PTC resistor bodies. The engaging surfaces of the pill-shaped resistor bodies and of the semicylindrical mounting components are complementary and cylindrical, to establish good electrical and thermal contact between the engaging surface portions. Voltage is applied across the two semicylindrical mounting components, causing the generation of heat within the PTC resistor bodies. The PTC action of the latter causes an automatic limiting of temperature, preventing damage to hair. The generated heat is transmitted to a heating plate in contact with a wick extending into a water container. Water evaporates from the wick and steam passes into the interior of the apertured cylindrical shell, out through the apertures thereof, and into contact with the hair wound around the curler.Type: GrantFiled: January 14, 1976Date of Patent: June 27, 1978Assignee: Braun AktiengesellschaftInventor: Hans Joachim Weise
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Patent number: 3956614Abstract: A metal bar with a metal felt covering on each side or therearound and sized externally to be a snug slip fit into slot means provided in a conductive surface monolithic refractory ceramic heater element provide for a convenient and desirable means for distributing current to the conductive surface of the element. As the felt covered electrode means heats up with electric current input to the element and under heat generating conditions, there will be a still tighter bond between the metal felt surfaces of the electrode and the slotted opening in the ceramic element to result in the desired tight contact and an efficient current distribution therefrom.Type: GrantFiled: April 21, 1975Date of Patent: May 11, 1976Assignee: Universal Oil Products CompanyInventor: George L. Hervert