Significant Electrical Connection Means (e.g., Terminals Or Leads) Patents (Class 361/520)
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Patent number: 7481849Abstract: An electric appliance comprises a component part (101) that comprises electronic components, among which is an electrolytic capacitor (105). A molded part (301) is molded around the component part (101), An outer surface of the molded part (301) constitutes at least a part of the outer surface of the electric appliance. The molded part comprises a cavity (302), which contains something else than electronic components or connections between electronic components. The cavity (302) is separated from the electrolytic capacitor (105) by at most a wall the thickness of which is smaller than a mean material thickness of the molded part (301) between the component part (101) and outside of the electric appliance.Type: GrantFiled: April 20, 2006Date of Patent: January 27, 2009Assignee: Salcomp OyInventors: Mikko Lehtonen, Marko Hagström
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Patent number: 7420797Abstract: An apparatus comprising a capacitor stack, including one or more substantially planar anode layers, and one or more substantially planar cathode layers. Additionally, the capacitor has a case having a first opening and a second opening, the first opening sized for passage of the capacitor stack, and a cover substantially conforming to the first opening and sealingly connected to the first opening. Also, the capacitor includes a plate substantially conforming to the second opening and sealingly connected to the second opening, the plate defining an aperture. Additionally, the capacitor includes a plug substantially conforming to the aperture in the plate, the plug sealingly connected to the plate. The capacitor stack is disposed in the case, and the terminal is in electrical connection with the case and at least one capacitor electrode.Type: GrantFiled: July 15, 2005Date of Patent: September 2, 2008Assignee: Cardiac Pacemakers, Inc.Inventor: Brian L. Schmidt
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Publication number: 20080158780Abstract: An apparatus is disclosed which includes an electrolytic capacitive element with multiple capacitor sections.Type: ApplicationFiled: December 28, 2007Publication date: July 3, 2008Applicant: American Radionic Company, Inc.Inventor: Robert Stockman
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Patent number: 7375949Abstract: One embodiment of the present subject matter includes an apparatus which includes a capacitor stack, including at least one substantially planar capacitor electrode, a case having a first opening and a second opening, the first opening sized for passage of the capacitor stack, the second opening defined by walls having a first thickness, a cover substantially conforming to the first opening and sealingly connected to the first opening and a plate substantially conforming to the second opening, the plate sealingly connected to the second opening, the plate having a second thickness which is approximately greater than the first thickness of the walls defining the second opening, wherein the capacitor stack is disposed in the case.Type: GrantFiled: December 7, 2006Date of Patent: May 20, 2008Assignee: Cardiac Pacemakers, Inc.Inventors: A. Gordon Barr, James A. Taller, Brian L. Schmidt
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Patent number: 7355841Abstract: An exemplary capacitor has a capacitor stack positioned in a case with a conductor positioned between the case and a lid. In one embodiment the conductor is positioned between the lid and an upper rim of the case and is welded to the lid and case. In one aspect, a capacitor constructed with round wire connectors for interconnecting anode and cathode layers. In one aspect, a configuration for electrically connecting a terminal wire to a capacitor case in which an end of the wire is attached to the case in end-on fashion. The terminal wire may have an expanded end for attaching to the capacitor case in a manner that minimizes the effect on the height profile of the case.Type: GrantFiled: November 3, 2000Date of Patent: April 8, 2008Assignee: Cardiac Pacemakers, Inc.Inventors: Brian L. Schmidt, Michael J. O'Phelan, James M. Poplett, Robert R. Tong
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Publication number: 20080030927Abstract: One embodiment of the present subject matter includes a stack of substantially planar electrodes including at least a first and second anode layer, and a plurality of cathode layers, a case in which the stack is disposed and to which the plurality of cathode layers is connected, a first feedthrough disposed through the case and connected to the first anode and a second feedthrough disposed through the case and connected to the second anode, wherein a first capacitor including the first anode layer and a second capacitor including the second anode layer are electrically isolated.Type: ApplicationFiled: August 3, 2006Publication date: February 7, 2008Inventor: Gregory J. Sherwood
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Patent number: 7327557Abstract: A structure and method for connecting capacitor electrodes is provided. One aspect of this disclosure relates to an apparatus for connecting cathodes. The apparatus includes a cathode layer containing an aperture, and a connection member. The connection member includes a protrusion mateable to the aperture having a length at least equal to a thickness of the cathode layer, a first flat section perpendicular to the protrusion, the first flat section having a first side attached to the protrusion and a second side including a contact surface, and a second flat section perpendicular to the first flat section, the second flat section at an offset distance from the protrusion and having a height equal to or greater than the protrusion, and where the connection member is mated to the cathode layer. Other aspects and embodiments are provided herein.Type: GrantFiled: April 21, 2006Date of Patent: February 5, 2008Assignee: Cardiac Pacemakers, Inc.Inventor: James M. Poplett
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Patent number: 7262953Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent leakage characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic. Moreover, the aforementioned electrolyte solution is used, and a foil showing noble potential at least in the electrolyte solution than the electrode potential of the cathode tab, or a cathode electrode foil subjected to chemical treatment is used as the cathode electrode foil, so as to obtain an excellent leakage characteristic.Type: GrantFiled: November 7, 2003Date of Patent: August 28, 2007Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7247178Abstract: A miniature solid electrolytic capacitor is provided, which is suitable for being disposed within an electrically insulating layer, and is connected to other component using an electrically conductive adhesive with a connection resistance at an anode low and with connection reliability improved. Specifically, the electrolytic capacitor includes a valve metal element for an anode 10 having a capacitor forming part 10A and an electrode lead part 10B, a dielectric oxide film 11 formed on the valve element, a solid electrolyte layer 12 formed on the dielectric oxide film 11 and a charge collecting element for a cathode 13 formed on the solid electrolyte layer 12, wherein at least one through hole 15 is formed in the electrode lead part 10B so as to expose a core 10C of the valve metal element, and an exposed portion 10D of the core is used for connecting portion.Type: GrantFiled: September 20, 2006Date of Patent: July 24, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koichi Hirano, Tsunenori Yoshida, Hiroyuki Handa, Yoshihisa Yamashita, Seiichi Nakatani
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Patent number: 7197819Abstract: A method of assembling and providing an electric power apparatus. The method uses a heat resistant housing having a structure adapted to accommodate and retain a power circuit card and also including a bracket adapted to accommodate and constrain a rigid conductive member. A power circuit card having an electrical terminal is placed into the housing and a rigid conductive member into the bracket. The rigid conductive member is flow soldered to the electrical terminal, thereby exposing the heat resistant housing to heat and creating a solder bond. Finally, the rigid conductive member is affirmatively connected to the housing. The bracket constrains the rigid conductive member so that the act of affirmatively connecting does not weaken the solder bond.Type: GrantFiled: December 18, 2004Date of Patent: April 3, 2007Assignee: Rinehart Motion Systems, LLCInventors: Lawrence E. Rinehart, Guillermo L. Romero
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Patent number: 7190570Abstract: An exemplary capacitor has a capacitor stack positioned in a case with a conductor positioned between the case and a lid. In one embodiment the conductor is positioned between the lid and an upper rim of the case and is welded to the lid and case. In one aspect, a capacitor constructed with round wire connectors for interconnecting anode and cathode layers. In one aspect, a configuration for electrically connecting a terminal wire to a capacitor case in which an end of the wire is attached to the case in end-on fashion. The terminal wire may have an expanded end for attaching to the capacitor case in a manner that minimizes the effect on the height profile of the case.Type: GrantFiled: September 15, 2005Date of Patent: March 13, 2007Assignee: Cardiac Pacemakers, Inc.Inventors: Brian L. Schmidt, Michael J. O'Phelan, James M. Poplett, Robert R. Tong
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Patent number: 7164574Abstract: A capacitor including a capacitor stack. The capacitor includes one or more substantially planar anode layers, and one or more substantially planar cathode layers. The capacitor includes a case with a first opening and a second opening, the first opening sized for passage of the capacitor stack and the second opening defined by walls having a first thickness. Additionally, the capacitor has a cover substantially conforming to the first opening and sealingly connected to the first opening, and a plate substantially conforming to the second opening, the plate adapted for attachment of a terminal, and sealingly connected to the second opening. The plate has a second thickness which is approximately greater than the first thickness of the walls defining the second opening. The capacitor stack is disposed in the case, and the terminal is in electrical connection with the case and at least one capacitor electrode.Type: GrantFiled: July 15, 2005Date of Patent: January 16, 2007Assignee: Cardiac Pacemakers, Inc.Inventors: A. Gordon Barr, James A. Taller, Brian L. Schmidt
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Patent number: 7157671Abstract: One aspect provides a capacitor having a first stack of capacitive elements a second stack of capacitive elements, wherein the first and second stacks are enclosed in separate compartments of a capacitor case that electrically isolate the electrolytes of each stack from one another.Type: GrantFiled: January 15, 2004Date of Patent: January 2, 2007Assignee: Cardiac Pacemakers, Inc.Inventors: Michael J. O'Phelan, Brian L. Schmidt, James M. Poplett, Robert R. Tong, Richard J. Kavanagh, Rajesh Iyer, Alexander Gordon Barr, Luke J. Christenson, Brian V. Waytashek, Brian D. Schenk, Gregory J. Sherwood
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Patent number: 7031140Abstract: The invention provides an electric double layer capacitor which has a container made from a resin in a substantially rectangular parallelepipedal form by joining a first container half segment and a second container half segment each in the form of a box. The second container segment is provided at one end thereof with an extension extending along an outer side surface of the first container segment to the bottom outer surface thereof. A first lead member has a portion closer to one end thereof, embedded in the first container segment, the first lead member portion, bent as embedded in the first container segment and led out of the container to outside thereof. A second lead member has a portion closer to one end thereof, embedded in the second container segment, bent as embedded in the second container segment and extending through the extension to outside of the container.Type: GrantFiled: November 30, 2004Date of Patent: April 18, 2006Assignee: Sanyo Electric Co., Ltd.Inventors: Seiji Omura, Kiyotaka Ito
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Patent number: 7023690Abstract: A capacitor enlarging an anode electrode pattern of a substrate is provided. The capacitor comprises a capacitor device including anode and cathode parts; and a substrate including a device mounting surface formed with anode and cathode electrode patterns connected to the anode and cathode parts, respectively, and a rear face formed with anode and cathode land patterns connected to the anode and cathode electrode patterns corresponding thereto by way of anode and cathode vias extending along a thickness direction. The anode electrode pattern is integrally formed with a region including at least a part of a region corresponding to the anode land pattern and at least a part of a region corresponding to the cathode land pattern in an area of the device mounting surface of the substrate.Type: GrantFiled: December 20, 2004Date of Patent: April 4, 2006Assignee: TDK CorporationInventors: Yumiko Yoshihara, Masaaki Kobayashi
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Patent number: 6987660Abstract: A feedthrough terminal assembly for an active implantable medical device utilizes to establish a reliable electrical connection between capacitor electrode plates, via inner surface metallization of a capacitor aperture, and an associated terminal pin 10, which passes at least partially therethrough. The inserts are preferably resiliently flexible, such as a spring, to establish this connection. The insert also serves to establish a mechanical connection between the capacitor and the terminal pin.Type: GrantFiled: March 30, 2005Date of Patent: January 17, 2006Assignee: Greatbatch-Sierra, Inc.Inventors: Robert A. Stevenson, Richard L. Brendel, Christine Frysz, Haytham Hussein, Matthew A. Dobbs
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Patent number: 6985352Abstract: The present invention relates generally to capacitor cells and the utilization of enhanced separator materials in such cells. More specifically, the present invention is related to the utilization of track-etched materials as the separator materials in capacitor cells. Methods of making a capacitor cell having a track-etched separator material is also disclosed.Type: GrantFiled: July 11, 2003Date of Patent: January 10, 2006Assignee: Medtronic, Inc.Inventor: John D. Norton
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Patent number: 6882519Abstract: The present invention relates to a method of manufacturing a flat aluminum electrolytic capacitor comprising a separator impregnated with an electrolytic solution, an anode foil and a cathode foil, a flat capacitor element that has external lead-out terminals connected respectively to the anode foil and the cathode foil, and a flexible casing that houses the capacitor element and is hermetically sealed, said method comprising the steps of encasing the capacitor element in the flexible casing and applying aging treatment before hermetically sealing the casing, and hermetically sealing the flexible casing, and also relates to a flat aluminum electrolytic capacitor comprising a separator impregnated with the electrolytic solution, the anode foil and the cathode foil, the flat capacitor element that has the external lead-out terminals connected respectively to the anode foil and the cathode foil, and the flexible casing that houses the capacitor element and is hermetically sealed, wherein the electrolytic capacitType: GrantFiled: September 19, 2003Date of Patent: April 19, 2005Assignee: Rubycon CorporationInventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
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Patent number: 6881232Abstract: A multi-anodic aluminum electrolytic capacitor includes an electrical connection to the multiple porous (e.g., tunnel-etched) anodes in an anode stack using a single anode tab that is attached only to a first anode. Other anodes are electrically coupled to the anode tab through the first anode. Anodes in the anode stack are in intimate physical and electrical contact with other such anodes as a result of layering effected by planar stacking or cylindrical winding. The need for separate tabs to different anode layers is eliminated or at least minimized, thereby reducing capacitor volume, increasing capacitor reliability, and reducing the cost and complexity of the capacitor manufacturing process for multi-anodic capacitors. The capacitor is capable of use in implantable defibrillators, camera photoflashes, and other electric circuit applications.Type: GrantFiled: July 10, 2003Date of Patent: April 19, 2005Assignee: Cardiac Pacemakers, Inc.Inventors: Michael J. O'Phelan, Robert R. Tong, James M. Poplett, Luke J. Christenson, Alexander Gordon Barr, Brian V. Waytashek
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Patent number: 6859353Abstract: Structures for serially connecting at least two capacitors together are described. Serially connecting capacitors together provides device manufactures, such as those selling implantable medical devices, with broad flexibility in terms of both how many capacitors are incorporated in the device and what configuration the capacitor assembly will assume.Type: GrantFiled: December 11, 2003Date of Patent: February 22, 2005Assignee: Wilson Greatbatch Technologies, Inc.Inventors: William B. Elliott, Eric Stemen
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Patent number: 6859354Abstract: An electrolytic capacitor comprising an anode, cathode and an electrolyte. The electrolyte comprises: about 35-60%, by weight water; about 10-55%, by weight organic solvent; about 0.05 to 10%, by weight, sulphuric acid; about 0.05 to 10%, by weight, boric acid; and about 0.05 to 10%, by weight, phosphorus oxy acid.Type: GrantFiled: May 30, 2003Date of Patent: February 22, 2005Assignees: Kemet Electronic Corporation, Medtronic, Inc.Inventors: Mark Edward Viste, Joachim Hossick-Schott, Zhi Fang, Brian John Melody, John Tony Kinard
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Patent number: 6856502Abstract: The invention relates to a method for cooling an electrolytic capacitor comprising a casing (1) that surrounds a capacitive element (2), and to an electrolytic capacitor. The casing (1) is provided with a hollow (3), and a cooling element (4) made of an electrically insulating material is placed in the hollow (3), the cooling element comprising at least one duct (5), which can be arranged to receive a cooling medium. Since the cooling element placed in the hollow is made of an electrically insulating material, the cooling medium can be liquid, such as water.Type: GrantFiled: May 7, 2002Date of Patent: February 15, 2005Assignee: ABB OyInventors: Risto Laurila, Mervi Jylhäkallio
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Patent number: 6852137Abstract: A method for manufacturing solid electrolytic capacitor that can be mounted direct on a semiconductor component and offers a superior high frequency characteristic. An aluminum foil 20 is provided on one surface with a resist film 23 and then with a through hole 24. Next, an insulation film 25 is formed to cover the other surface of aluminum foil 20 and to fill the first through hole, and then the resist film 23 is removed; and then the surface of aluminum foil 20 is roughened to be provided with a dielectric layer 27 thereon. A second through hole 36 is formed in the insulation film 25, which is filling the first through hole 24. A through hole electrode 28 is formed in the second through hole; and then, on the surface of the dielectric layer 27, a solid electrolytic layer 29 and a collector layer 30 are formed. After an opening 37 is provided, a first connection terminal 31 is formed therein, and a second connection electrode 32 on the exposed surface of the through hole electrode 28.Type: GrantFiled: July 16, 2002Date of Patent: February 8, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsumasa Miki, Yuji Mido, Tatsuo Fujii, Makoto Nakano, Suzushi Kimura
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Patent number: 6839223Abstract: Disclosed is an aluminum electrolytic capacitor, wherein each of anode and cathode foils is joined to a corresponding portion of a leader line through at least two caulked joint sections formed at each of the opposite ends of the flat portion, and a plurality of pressure-welded joint sections formed between the respective caulked joint sections at the opposite ends. The chaulked joint sections formed at each of the opposite ends of the portion provide a high joint strength. Further, the pressure-welded joint sections formed between the respective caulked-join sections at the opposite ends of the portion allow an electrical connection between the foil and the leader line to be stably obtained at a low resistance. This joint structure can, therefore, be applied to small-size capacitors which have not been able to be obtained by using only caulked joint, to achieve an aluminum electrolytic capacitor having a sufficient joint strength and a highly reliable electrical connection.Type: GrantFiled: January 8, 2004Date of Patent: January 4, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuya Kawahara, Mitsuo Tadokoro, Yoshiki Hashimoto, Toshiyuki Hata, Morihiro Fukuda, Tsuyoshi Yoshino
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Patent number: 6836401Abstract: A capacitor is provided so as to include: a capacitor element including a dielectric layer, and an anode and a cathode that are arranged to support the dielectric layer therebetween; a planar anode terminal; and a planar cathode terminal. The anode terminal and the cathode terminal are led out from the capacitor element in a same direction so as to be in parallel with each other, and at least a part of the anode terminal and at least a part of the cathode terminal overlap each other without contact in a direction perpendicular to a terminal plane of at least one terminal selected from the anode terminal and the cathode terminal. A capacitor built-in board using the capacitor also is provided.Type: GrantFiled: June 19, 2003Date of Patent: December 28, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tsunenori Yoshida, Mikinari Shimada, Hiroyuki Handa, Masaaki Kuranuki, Seiichi Nakatani, Akihiro Ishikawa
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Patent number: 6807048Abstract: A capacitor structure comprises a shallow drawn encasement having first and second major sides and a peripheral wall coupled to the first and second sides. A cathode is disposed within the encasement proximate the first and second major sides, the cathode having a cathode lead. A central anode a having an anode lead is disposed within the encasement, and a bipolar, insulative feedthrough extends through the encasement through which electrical coupling may be made to the anode lead and the cathode lead.Type: GrantFiled: May 30, 2003Date of Patent: October 19, 2004Assignee: Medtronic, Inc.Inventors: Christian S. Nielsen, Mark Edward Viste, Anthony W. Rorvick, David P. Haas, Joachim Hossick-Schott, John D. Norton, Tim T. Bomstad, Kurt J. Casby, William John Taylor
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Patent number: 6795297Abstract: The present invention provides an electrode sheet for an electric double-layer capacitor. The electrode sheet is molded from granules which are produced from ingredients including an electrochemically active material, an electrically conductive filler and a binder. And the electrode sheet is bonded with a collector foil so as to form a polarizable electrode which is rolled or bent so as to be applied to the electric double-layer capacitor. In the present invention, a coefficient of elongation S for the polarizable electrode is adapted to be greater than (R+T)/R and less than or equal to 1.11, where R represents a curvature of an inscribed circle at a bent portion of the polarizable electrode and T represents a thickness of the polarizable electrode.Type: GrantFiled: November 26, 2003Date of Patent: September 21, 2004Assignees: Honda Motor Co., Ltd., Daido Metal Company Ltd.Inventors: Manabu Iwaida, Shigeki Oyama, Kenichi Murakami, Kouki Ozaki, Masanori Tsutsui
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Publication number: 20040174659Abstract: Disclosed is an aluminum electrolytic capacitor, wherein each of anode and cathode foils is joined to a corresponding portion of a leader line through at least two caulked joint sections formed at each of the opposite ends of the flat portion, and a plurality of pressure-welded joint sections formed between the respective caulked joint sections at the opposite ends. The caulked joint sections formed at each of the opposite ends of the portion provide a high joint strength. Further, the pressure-welded joint sections formed between the respective caulked-join sections at the opposite ends of the portion allow an electrical connection between the foil and the leader line to be stably obtained at a low resistance. This joint structure can, therefore, be applied to small-size capacitors which have not been able to be obtained by using only caulked joint, to achieve an aluminum electrolytic capacitor having a sufficient joint strength and a highly reliable electrical connection.Type: ApplicationFiled: January 8, 2004Publication date: September 9, 2004Inventors: Kazuya Kawahara, Mitsuo Tadokoro, Yoshiki Hashimoto, Toshiyuki Hata, Morihiro Fukuda, Tsuyoshi Yoshino
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Patent number: 6788524Abstract: A drop-fill assembly and method for uniformly distributing electrode active particles onto a current collector is described. The drop-fill assembly comprises a conduit containing two or more spaced apart sifting screens. A funnel is located upstream of the sifting screens to distribute an electrode active powder into the center of the conduit with a downward velocity. The mesh of any one sifting screen is out of direct alignment with respect to the next or previous screen. The electrode active powder is poured into the funnel and distributed across the conduit's cross-section as it bounces off and passes through the misaligned sifting screens. The powder exits at the bottom of the conduit lying in a thin, uniform layer on a current collector, taking on the shape of the desired electrode due to the boundary of the conduit and pressing fixtures located above and beneath the current collector. The powder layer is then pressed on to the current collector to produce an electrode.Type: GrantFiled: October 9, 2003Date of Patent: September 7, 2004Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Tina Urso, Dominick Frustaci, Michael Guidi
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Patent number: 6771488Abstract: A capacitor includes a valve metal foil including a valve metal porous body and a lead portion, a dielectric layer provided on the valve metal porous body, a solid electrolyte layer on the dielectric layer, a collector layer on the solid electrolyte layer, an anode lead connected to the lead portion, a housing for accommodating the valve metal porous body, the dielectric layer, the solid electrolyte layer, the collector layer, and the anode lead, and for having an end of the anode lead exposed from a surface of the housing, an anode external terminal provided over the housing and connected with the end of the anode lead, and a cathode external terminal provided over the housing and coupled with the collector layer. The capacitor has a large capacitance, a small ESR, and a small ESL.Type: GrantFiled: November 14, 2003Date of Patent: August 3, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Seiji Takagi, Ayumi Kochi, Yuji Mid, Yasuo Kanemitsu
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Patent number: 6733544Abstract: A method for producing an electrical double layer capacitor comprising the steps of assembling together components comprised of a positive electrode, a negative electrode, a non-aqueous solvent, an electrolyte containing a supporting salt, a separator, and a gasket to form a coin- or button-type electrical double layer capacitor, heating the assembled coin- or button-type electrical double layer capacitor so that a temperature profile of the heating step is approximately the same as a temperature profile of reflow soldering, and welding an outer connection terminal to the heated assembled coin- or button-type electrical double layer capacitor after the heating step.Type: GrantFiled: October 10, 2001Date of Patent: May 11, 2004Assignee: SII Micro Parts Ltd.Inventors: Shinichi Takasugi, Yoshimi Kanno, Shunji Watanabe, Tsugio Sakai, Yoshibumi Nakamura, Hideharu Onodera
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Patent number: 6735074Abstract: An aluminum electrolytic chip capacitor having excellent resistance against vibrations is disclosed. The capacitor is free from breakage of soldered portions or lead wires due to the vibrations upon being mounted on a board. The capacitor includes a metal case accommodating a capacitor element and having its open end sealed with a sealing member, and an insulated terminal plate mounted on the case. The case is provided with an annular shrink portion at the sealing of the open end. The terminal plate includes wall portions disposed at positions other than on a line of the lead wire bending direction of the periphery of the terminal plate. The wall portions cover at least the shrink portion. Inner surfaces of the wall portions abut the periphery of the case, thereby holding the case.Type: GrantFiled: November 4, 2002Date of Patent: May 11, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ryuji Nakamura, Yoshihito Suizu, Morihiro Fukuda, Sunao Matsunaga, Takeshi Shoji
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Patent number: 6704187Abstract: A termination assembly for a capacitor provides controlled ESR and ESL. First and second termination elements are attached to first and second foils to provide terminal connections. The first and second foils are wound into a cylinder such that the first and second termination elements form a shape within the cylinder and are spaced apart by a first distance. First and second leads are extending from the termination elements, respectively, such that the first and second leads are spaced apart by a second distance different from the first distance.Type: GrantFiled: September 24, 2001Date of Patent: March 9, 2004Assignee: Intel CorporationInventors: Steve Schiveley, Mike Greenwood, Tao Liu, Peir Chu, Aaron Steyskal
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Patent number: 6699265Abstract: One embodiment includes a capacitor having a first anode stack having a first number of anode foils, a second anode stack having a second number of anode foils, where the first number of anode foils is different than the second number of anode foils. Another aspect provides a capacitor having a case having a curved interior surface, and first, second, and third capacitor modules that confront the curved interior surface of the case. One aspect provides a capacitor having one or more anodes and a cathode structure comprising a plurality of integrally connected cathode plates, the cathode structure having a serpentine shape, interweaving under and over each of the one or more anodes. One aspect provides a feedthrough assembly having an electrically conductive member dimensioned to extend at least partially through a feedthrough hole of a case of the capacitor, the conductive member having a passage therethrough.Type: GrantFiled: November 3, 2000Date of Patent: March 2, 2004Assignee: Cardiac Pacemakers, Inc.Inventors: Michael J. O'Phelan, Brian L. Schmidt, James M. Poplett, Robert R. Tong, Richard J. Kavanagh, Rajesh Iyer, Alexander Gordon Barr, Luke J. Christenson, Brian V. Waytashek, Brian D. Schenk, Gregory J. Sherwood
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Patent number: 6687118Abstract: A method of joining a connection member to a capacitor foil using a staking tool having a tip of less than 0.030″ (0.762 mm) in diameter. Another embodiment couples multiple connection members of a capacitor together by edge-connecting each connection member to its substantially flush neighboring connection members. In one aspect, a capacitor includes a multi-anode stack connected at a first weld by a weld joint less than 0.060″ (1.524 mm) in diameter and a tab attached to one of the anodes of the multi-anode stack at a second weld. In one aspect, an exemplary method joining one or more foils using a staking tool having a tip of less than approximately 0.060″ (1.524 mm) in diameter. In another aspect, a capacitor including a capacitor case having an electrolyte therein and a high formation voltage anode foil having a porous structure and located within the capacitor case.Type: GrantFiled: November 3, 2000Date of Patent: February 3, 2004Assignee: Cardiac Pacemakers, Inc.Inventors: Michael J. O'Phelan, James M. Poplett, Robert R. Tong, Rajesh Iyer, Alexander Gordon Barr
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Publication number: 20030223179Abstract: The invention intends to reduce the inductance of wirings for connecting an electrolytic capacitor for use in a low-voltage electric device, and realizes to suppress the surge voltage and improve the frequency response. For a low-voltage electrolytic capacitor, the anode and cathode electrode terminals are placed to come close, and broad parallel plates are used for the wirings connecting to the electric device, so that the to-and-fro currents overlap in an area of the power wirings near the electrolytic capacitor, thereby reducing the inductance of the wiring parts to a large extent.Type: ApplicationFiled: January 14, 2003Publication date: December 4, 2003Inventors: Akira Mishima, Shinji Shirakawa, Keiichi Mashino, Toshiyuki Innami
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Patent number: 6648928Abstract: Implantable medical devices (IMDs) and their various components, particularly a simplified, miniature capacitor connector block and wiring harness utilizing an epoxy droplet and method of making same are disclosed. An electrode stack comprises a plurality of capacitor layers stacked in registration upon one another, each capacitor layer comprising a cathode layer having a cathode tab, an anode sub-assembly comprising at least one anode layer having an anode tab, and a separator layer located between adjacent anode and cathode layers. A connector assembly is electrically attached to the anode connection terminal for making electrical connection with anode tabs and to the cathode connection terminal for making electrical connection with cathode tabs. The connector block is formed on an encapsulation area of a case side wall of epoxy that is cured for a period of time under elevated temperature conditions while rotating the capacitor assembly.Type: GrantFiled: April 30, 2002Date of Patent: November 18, 2003Assignee: Medtronic, Inc.Inventors: Christian S. Nielsen, Timothy T. Bomstad, Mark D. Breyen, Thomas P. Miltich, Michael E. Clarke, Anthony W. Rorvick
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Patent number: 6621687Abstract: A microelectronic supercapacitor is amenable to being fabricated using micro electromechanical systems (MEMS) techniques. By utilizing MEMS techniques, the supercapacitor in accordance with the present invention can be formed with volumes <1 mm3. As such, such microelectronic supercapacitor is suitable for use in applications in which only a few millimeters are available for both a supercapacitor and an energy storage device, such as a battery.Type: GrantFiled: September 5, 2001Date of Patent: September 16, 2003Assignees: Northrop Grumman Corporation TPL, Inc., TPL, Inc., California Institute of TechnologyInventors: David H. Lewis, Jr., John J. Waypa, Erik K. Antonsson, Charles D. E. Lakeman
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Patent number: 6616713Abstract: An anode lead 17 extending from a capacitor body 18 of a capacitor element 14 is mounted on a connecting portion 21 of an anode terminal 12 and the anode lead 17 and the connecting portion 21 are welded together by laser light B. The welding operation is performed by laser light B in a state where the anode lead 17 is urged to the connecting portion 21 in a region between said anode lead and said connecting portion. Alternatively, the welding operation is performed by laser light B in a state where a reflection plate having a slot and functioning to reflect reflected laser light is arranged in a region between the connecting portion and the capacitor body while the anode lead is received in said slot.Type: GrantFiled: November 14, 2001Date of Patent: September 9, 2003Assignee: NEC Tokin CorporationInventors: Mitsunori Sano, Takashi Kono, Kazunori Watanabe
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Publication number: 20030123217Abstract: An aluminum electrolytic chip capacitor having excellent resistance against vibrations is disclosed. The capacitor is free from breakage of soldered portions or lead wires due to the vibrations upon being mounted on a board. The capacitor includes a metal case accommodating a capacitor element and having its open end sealed with a sealing member, and an insulated terminal plate mounted on the case. The case is provided with an annular shrink portion at the sealing of the open end. The terminal plate includes a wall portion disposed at a position other than on a line of the lead wire bending direction of the periphery of the terminal plate. The wall portions cover at least the shrink portion. Inner surfaces of the wall portions abut the periphery of the case, thereby holding the case.Type: ApplicationFiled: November 4, 2002Publication date: July 3, 2003Inventors: Ryuji Nakamura, Yoshihito Suizu, Morihiro Fukuda, Sunao Matsunaga, Takeshi Shoji
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Patent number: 6563692Abstract: A capacitor, particularly, an electrolyte capacitor, with low inductance includes a housing part, at least one capacitor reel including two capacitor electrodes insulated from each other by a dielectric and positioned in the housing part, and a housing bottom having at least one feed-through for contacting the capacitor electrodes and on which are arranged outer terminals for capacitor electrodes, the outer terminals being positioned so that one of the two outer terminals encircles the other terminal at least partially, and the two outer terminals are electrically insulated from each other.Type: GrantFiled: April 9, 2002Date of Patent: May 13, 2003Assignee: Robert Bosch GmbHInventor: Wolfgang Feiler
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Patent number: 6556426Abstract: A low-inductance electrolytic capacitor has an additional current guidance being provided from the winding via the pot and an electrically conductive disk to the negative lead-through, so that the current is divided for reducing the self-inductance.Type: GrantFiled: December 27, 2001Date of Patent: April 29, 2003Assignee: EPCOS AktiengesellschaftInventor: Norbert Will
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Patent number: 6545855Abstract: An apparatus (100) for reducing inductance in a capacitor having a first terminal (12) and a spaced-apart second terminal (14), includes a first conductive plate (120) and a second conductive plate (140). The first conductive plate (120) is electrically coupled to the first terminal (12). The second conductive plate (140) is electrically coupled to the second terminal (14) and is disposed in parallel with the first conductive plate (120) so as to overlap at least a portion of the first conductive plate (120). An insulating member (122 and 142) is disposed between the first conductive plate (120) and the second conductive plate (140). The insulating member (122 and 142) insulates the first conductive plate (120) from the second conductive plate (140).Type: GrantFiled: December 3, 2001Date of Patent: April 8, 2003Assignee: Motorola, Inc.Inventors: Scott W. Repplinger, Jiri Slaby, Christopher J. Hoyle, Brian Lau
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Patent number: 6477037Abstract: Implantable medical devices (DMDs) and their various components, including flat electrolytic capacitors for same, and methods of making and using same, particularly a simplified, miniature capacitor connector block and wiring harness utilizing an epoxy droplet and method of making same are disclosed. An electrode stack assembly and electrolyte are located within the interior case chamber of a hermetically sealed capacitor case. The electrode stack includes a plurality of capacitor layers stacked in registration upon one another, each capacitor layer including a cathode layer having a cathode tab, an anode sub-assembly comprising at least one anode layer having an anode tab, and a separator layer located between adjacent anode and cathode layers, whereby all adjacent cathode layers and anode layers of the stack are electrically insulated from one another by a separator layer.Type: GrantFiled: June 30, 2000Date of Patent: November 5, 2002Assignee: Medtronic, Inc.Inventors: Christian S. Nielsen, Timothy T. Bomstad, Mark D. Breyen, Thomas P. Miltich, Michael E. Clarke, Anthony W. Rorvick
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Patent number: 6451073Abstract: A single cell, multi-electrode high performance double layer capacitor includes first and second flat stacks of electrodes adapted to be housed in a closeable two-part capacitor case which includes only a single electrolyte seal. Each electrode stack has a plurality of electrodes connected in parallel, with the electrodes of one stack being interleaved with the electrodes of the other stack to form an interleaved stack, and with the electrodes of each stack being electrically connected to respective capacitor terminals. A porous separator is positioned against the electrodes of one stack before interleaving to prevent electrical shorts between the electrodes. The electrodes are made by folding a compressible, low resistance, aluminum-impregnated carbon cloth, made from activated carbon fibers, around a current collector foil, with a tab of the foils of each electrode of each stack being connected in parallel and connected to the respective capacitor terminal.Type: GrantFiled: May 16, 2000Date of Patent: September 17, 2002Assignee: Maxwell Electronic Components Group, Inc.Inventors: C. Joseph Farahmandi, John M. Dispennette, Edward Blank, Alan C. Kolb
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Patent number: 6445567Abstract: A cap member 4 having electrode terminals 10, 11 which are arranged in an opening 2a, and an insulating seal member 12 insert-molded between both the electrode terminals 10, 11. The electrode terminals 10, 11 are provided with ribs 14, 17, and chemically bond to the layer of an organic compound formed on the surface of the terminals 10, 11. The bottom surface of the rib 17 is placed upwardly of the bottom surface of the rib 14. The resin-molded article 12 contains therein the ribs 14 and 17 formed on both the electrode terminals 10, 11 and chemically bonds to the organic compound layers formed on the surfaces of both the electrode terminals 10, 11.Type: GrantFiled: February 7, 2002Date of Patent: September 3, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masato Komatsuki, Toshiyuki Matsuoka
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Patent number: 6402793Abstract: Flat electrolytic capacitors particularly for use in implantable medical devices having stacked cathode and anode layers particular electrical connections of the capacitor anode and cathode layers with a capacitor connector assembly. Anode terminal means extend through the capacitor case side wall for electrically connecting a plurality of the anode tabs to one another and providing an anode connection terminal at the exterior of the case that is electrically insulated from the case. A cathode terminal extends through or to an encapsulation area of the capacitor case side wall via a cathode terminal passageway for electrically connecting a plurality of the cathode tabs to one another and providing a cathode connection terminal at the exterior of the case. The connector assembly is electrically attached to the anode connection terminal for making electrical connection with the anode tabs and to the cathode connection terminal for making electrical connection with the cathode tabs.Type: GrantFiled: June 30, 2000Date of Patent: June 11, 2002Assignee: Medtronic, Inc.Inventors: Thomas P. Miltich, Paul A. Pignato, Mark D. Breyen, Kurt J. Casby, William L. Johnson
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Patent number: 6366445Abstract: A cartridge capacitor, such as floating cathode electrolytic capacitor, having anodes, a floating cathode, and electrolytic layers rolled into a cartridge. Consecutive turns of the floating cathode are connected together by a conductor to reduce generated heat and to improve heat dissipation. An anode at outer turns of the capacitor is smaller in area than an anode at inner turns of the capacitor to reduce heat generated at the inner turns. The anodes can be made of an amorphous oxide foil.Type: GrantFiled: April 2, 1999Date of Patent: April 2, 2002Assignee: General Electric CompanyInventors: Sigmund Bruno Alexander Bruvelaitis, Juan Antonio Rojas Rosales
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Patent number: 6356431Abstract: A structure of connection pins of a capacitor includes a housing, connection pins positioned at the lateral sides of the interior of the housing, and a capacitor element located between two pins, and the remaining space of the housing being filled with fixing glue, characterized in that one opening of the housing holds the capacitor element at a larger surface thereof and the two pins are located at the sides of the housing a plurality of elastic plates with a slanting angle are provided to the connection pins, and the lower section of the connection pins are bent to form a contact plate for contacting with a circuit board, the contact plate is a hook-like structure and is provided with solder at appropriate position, an insertion leg is provided on the contact plate for mounting with the circuit board, thereby the elastic plate clips the capacitor element to provide a good position and stable contact.Type: GrantFiled: March 26, 2001Date of Patent: March 12, 2002Inventors: Ming Chang Lin, Su-Chin Lai
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Patent number: 6319292Abstract: A capacitor includes a porous pellet formed from compressed conductive particles. The pellet has a lead receiving external surface. The conductive particles at the lead receiving surface are fused together to create a fused layer on the external surface of the pellet. A lead wire has one of its ends welded to the fused layer on the surface of the pellet. The fused layer is formed by exposing it to high temperatures, preferably by use of a laser beam.Type: GrantFiled: June 5, 2000Date of Patent: November 20, 2001Assignee: Vishay Sprague, Inc.Inventors: Yuri L. Pozdeev-Freeman, Boris Levi, Semion Akselrod