With Hermetic Seal Patents (Class 361/518)
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Publication number: 20120236469Abstract: A capacitor includes: a capacitor element; an electrolyte impregnated into at least the capacitor element; a bottomed cylindrical metal case accommodating the capacitor element and the electrolyte; and a sealing body sealing an opening portion of the case. Further, the capacitor also includes a coating layer provided at a portion in contact with the outer surface of the sealing body and formed by dispersing, into resin, an adsorbent adsorbing a solvent included in the electrolyte. Alternatively, the sealing body is formed by dispersing the above-described adsorbent in a rubber component.Type: ApplicationFiled: March 2, 2011Publication date: September 20, 2012Applicant: PANASONIC CORPORATIONInventors: Norihisa Takahara, Hideki Shimamoto, Kiyoshi Hirota, Yuichiro Tsubaki
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Patent number: 8259436Abstract: An integrated capacitor assembly that contains at least two solid electrolytic capacitor elements electrically connected to common anode and cathode terminations is provided. The capacitor elements contain an anode, a dielectric coating overlying the anode that is formed by anodic oxidation, and a conductive polymer solid electrolyte overlying the dielectric layer. The capacitor elements are spaced apart from each other a certain distance such that a resinous material can fill the space between the elements. In this manner, the present inventors believe that the resinous material can limit the expansion of the conductive polymer layer to such an extent that it does not substantially delaminate from the capacitor element. In addition to possessing mechanical stability, the capacitor assembly also possesses a combination of good electrical properties, such as low ESR, high capacitance, and a high dielectric breakdown voltage.Type: GrantFiled: August 3, 2010Date of Patent: September 4, 2012Assignee: AVX CorporationInventors: Jan Petrzilek, Miloslav Uher, Lotfi Djebara
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Patent number: 8259435Abstract: A wet electrolytic capacitor that contains a hermetically sealed lid assembly is disclosed. More specifically, the lid assembly contains a lid (e.g., titanium) that defines an internal orifice. A conductive tube may extend through the orifice that is of a size and shape sufficient to accommodate an anode lead. An insulative material is also provided within the orifice to form a hermetic seal (e.g., glass-to-metal seal), such as between the conductive tube and the lid. The lid assembly also includes a liquid seal that is formed from a sealant material. The liquid seal coats a substantial portion of the lower surface of the lid and hermetic seal to limit contact with any electrolyte that may leak from the casing. To help achieve such surface coverage, the sealant material is generally flowable so that it can be heated during production of the capacitor and flow into small crevices that would otherwise remains uncoated.Type: GrantFiled: November 1, 2010Date of Patent: September 4, 2012Assignee: AVX CorporationInventors: William A. Millman, Ed Jackson, James Steven Bates, John Galvagni
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Patent number: 8248759Abstract: A capacitor has a capacitor element, an open-topped case on which terminals joined to a pair of electrode lead sections of the capacitor element are disposed facing each other, and a cover combined with the open surface of the case. Each terminal has a pair of intermediate conductive sections and a pair of terminal sections. The joint has a joint surface to which one of the electrode lead sections of the capacitor element is joined. The intermediate conductive sections are L-shaped, and are extendedly disposed in directions opposite to each other from both ends of the joint. The terminal sections are disposed further extendedly from the intermediate conductive sections and placed symmetrically about the joint.Type: GrantFiled: July 12, 2010Date of Patent: August 21, 2012Assignee: Panasonic CorporationInventors: Masayuki Sato, Yukiyasu Sugihara, Yasuyuki Ito, Nario Niibo
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Patent number: 8243421Abstract: An electrolytic capacitor in which positions of an anode terminal and a cathode terminal in a wound-type capacitor element can be fixed and consequently increase in leakage current can be suppressed and a manufacturing method thereof are provided. The electrolytic capacitor including a wound-type capacitor element having an anode terminal and a cathode terminal, a bottomed case accommodating the wound-type capacitor element, and a sealing member sealing the winding structure portion in the bottomed case, through which the anode terminal and the cathode terminal penetrate, includes a fixing member arranged between the winding structure portion and the sealing member and having openings in number not smaller than the sum of the number of anode terminals and the number of cathode terminals, the anode terminal and the cathode terminal passing through the openings, and the anode terminal and the cathode terminal being fixed by the fixing member.Type: GrantFiled: February 3, 2009Date of Patent: August 14, 2012Assignees: SANYO Electric Co., Ltd., SAGA SANYO Industries Co., Ltd.Inventor: Kazumasa Fujimoto
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Publication number: 20120176730Abstract: An electric storage device includes an electric storage device body impregnated with an electrolyte solution, a sheath for hermetically sealing the electric storage device body, and a pressure regulator provided at the sheath. The pressure regulator includes a plurality of gas release mechanism portions. Further, the pressure regulator allows release of gases from an inside space of the sheath in which the electric storage device body exists to an outside space by causing the gases from the inside space to pass through the gas release mechanism portions in succession, and blocks entry of gases from the outside space to the inside space by the respective gas release mechanism portions. A buffer space is formed between the gas release mechanism portions by being partitioned by the gas release mechanism portions.Type: ApplicationFiled: January 5, 2012Publication date: July 12, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Daigo TAKEMURA, Tetsuya Yagi, Tatsunori Okada, Shuichi Matsumoto, Kenro Mitsuda
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Patent number: 8179663Abstract: A capacitor is presented that includes a housing, an electrode assembly, a liner, and a fill port. The liner is located between the housing and the electrode assembly. The liner includes a recessed portion. A fill port extends through the housing across from the recessed portion in the liner. A gap is formed between the recessed portion and the fill port.Type: GrantFiled: May 5, 2008Date of Patent: May 15, 2012Assignee: Medtronic, Inc.Inventors: Leo J. Brabeck, Jeffrey D. Chaput, Thomas M. Henderson, Thomas W. Kanitz, Jeffrey J. Louwagie, Christian S. Nielsen, Walter C. Sunderland
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Publication number: 20120106030Abstract: A wet electrolytic capacitor that contains a hermetically sealed lid assembly is disclosed. More specifically, the lid assembly contains a lid (e.g., titanium) that defines an internal orifice. A conductive tube may extend through the orifice that is of a size and shape sufficient to accommodate an anode lead. An insulative material is also provided within the orifice to form a hermetic seal (e.g., glass-to-metal seal), such as between the conductive tube and the lid. The lid assembly also includes a liquid seal that is formed from a sealant material. The liquid seal coats a substantial portion of the lower surface of the lid and hermetic seal to limit contact with any electrolyte that may leak from the casing. To help achieve such surface coverage, the sealant material is generally flowable so that it can be heated during production of the capacitor and flow into small crevices that would otherwise remains uncoated.Type: ApplicationFiled: November 1, 2010Publication date: May 3, 2012Applicant: AVX CORPORATIONInventors: William A. Millman, Ed Jackson, James Steven Bates, John Galvagni
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Patent number: 8133286Abstract: The present subject matter includes a method of producing an apparatus for use in a patient, the method including etching an anode foil, anodizing the anode foil, assembling the anode foil, at least one cathode foil and one or more separators into a capacitor stack adapted to deliver from about 5.3 joules per cubic centimeter of capacitor stack volume to about 6.3 joules per cubic centimeter of capacitor stack volume at a voltage of between about 465 volts to about 620 volts, inserting the stack into a capacitor case, inserting the capacitor case into a device housing adapted for implant in a patient, connecting the capacitor to a component and sealing the device housing.Type: GrantFiled: March 12, 2007Date of Patent: March 13, 2012Assignee: Cardiac Pacemakers, Inc.Inventor: Gregory J. Sherwood
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Patent number: 8134083Abstract: A circuit carrier having a metal support layer, at least some portions of which are covered by a dielectric layer, the dielectric layer having a plurality of pores, with the pores being sealed by glass at least on the opposite side of the dielectric layer to the support layer.Type: GrantFiled: December 3, 2008Date of Patent: March 13, 2012Assignee: AB Mikroelektronik Gesselschaft mit beschrankter HaftungInventor: Bernd Haegele
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Publication number: 20110317333Abstract: Provided is an electrical energy storage device including an electrode winding body, which includes a positive electrode generating electrons by oxidation and reduction, a negative electrode for absorbing the generated electrons, and separation layers for physically separating the negative electrode from the positive electrode, which are sequentially wound around a winding core, and an electrolyte provided between the positive electrode and the negative electrode, the electrical energy storage device including: a terminal plate for externally connecting the electrode winding body to an external electrode connecting member such as an external resistor; a cylindrical can for accommodating the electrode winding body connected to the terminal plate; and a conductive interconnecting member for connection between the terminal plate and polarity-leads on one side of the electrode winding body by a method selected from the group consisting of plasma-spraying, welding, soldering and adhesion using a conductive adhesivType: ApplicationFiled: February 24, 2010Publication date: December 29, 2011Applicant: NESSCAP CO., LTD.Inventors: Kyung-Sang Chun, Kwan-Gu Jeong
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Patent number: 8082663Abstract: A method of providing a hermetic, electrical connection between two electrical components by mating at least one metal pin in a glass-ceramic to metal seal connector to two electrical components, wherein the glass-ceramic to metal seal connector incorporates at least one metal pin encased (sealed) in a glass-ceramic material inside of a metal housing, with the glass-ceramic material made from 65-80% SiO2, 8-16% Li2O, 2-8% Al2O3, 1-5% P2O5, 1-8% K2O, 0.5-7% B2O3, and 0-5% ZnO. The connector retains hermeticity at temperatures as high as 700° C. and pressures as high as 500 psi.Type: GrantFiled: November 11, 2008Date of Patent: December 27, 2011Assignee: Sandia CorporationInventors: Saundra L. Monroe, S. Jill Glass, Ronnie G. Stone, Jamey T. Bond, Donald F. Susan
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Publication number: 20110260695Abstract: A capacitor device and associated method having a housing made of a material that is folded to form a cavity sized to contain an electrolyte and electrode package. The material has a substrate and a film attached to the substrate. Respective portions of the film that are folded against each other are fused together to form a first seal that in cooperation with a folded edge of the material seals the cavity. The capacitor also has a second seal attached to the housing and to the first seal that seals the cavity.Type: ApplicationFiled: April 21, 2010Publication date: October 27, 2011Applicant: SEAGATE TECHNOLOGY LLPInventor: Neal Frank Gunderson
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Patent number: 7978463Abstract: One or more embodiments of transportable weatherproof battery power supply and storage for electronic equipment are provided. The transportable weatherproof enclosure can include a base, an enclosure removably engaged to a base plate; a first door pivotably connected to the first wall, a second door pivotably connected to the second wall, and a first battery pack disposed within the enclosure.Type: GrantFiled: September 17, 2010Date of Patent: July 12, 2011Assignee: Solarcraft, Inc.Inventors: Darrell N. Haun, Donald N. Haun, Victor Gingles
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Publication number: 20110149475Abstract: This document discusses capacitive elements including a first, second and third electrode arranged in a stack. The third electrode is positioned between the first and second electrode. An interconnect includes a unitary substrate shared with the first and second electrodes. The interconnect is adapted to deform to accommodate the stacked nature of the first and second electrodes. The unitary substrate includes a sintered material disposed thereon.Type: ApplicationFiled: December 15, 2010Publication date: June 23, 2011Inventors: Gregory J. Sherwood, Jay E. Daley, Mary M. Byron, Eric Stemen, Peter Jay Kuhn
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Patent number: 7830647Abstract: The capacitor has a capacitor element, a tubular metallic case, an electrolyte, and a terminal plate. The case contains the capacitor element and is joined to a first electrode of the capacitor element at its inner bottom surface. The terminal plate is joined to the second electrode of the capacitor element and seals the opening of the case. At least one of the terminal plate and the case is provided with a through hole, into which a hermetic plug made of a rubber-like elastic body and having an external diameter larger than a diameter of the through hole is inserted.Type: GrantFiled: December 8, 2006Date of Patent: November 9, 2010Assignee: Panasonic CorporationInventors: Teruhisa Miura, Hideki Shimamoto, Shusaku Kawasaki, Masayuki Shinjou
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Publication number: 20100267252Abstract: An electronic component includes an electronic component body having lead wires led out therefrom and compliant pins. Compliant pins include connections to be connected to lead wires and are in contact, at end surfaces on the other side thereof, with a lead-wire lead-out surface of the electronic component body. Compliant pins are provided at one end thereof with connectors to be press-fitted into the throughholes of a circuit board.Type: ApplicationFiled: September 28, 2007Publication date: October 21, 2010Applicant: Matsushita Electric Industrial Co., Ltd.Inventor: Katsuya Fujimoto
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Publication number: 20100268292Abstract: A hermetically sealed wet electrolytic capacitor includes a hermetically sealed case, a cathode, an anode, and an insulator between the anode and the cathode to provide electrical insulation between the anode and the cathode. An electrolytic solution is disposed within the case. A first terminal is electrically connected to the anode and a second terminal is electrically connected to the cathode. The cathode comprises a metal substrate having an alloy layer formed with a noble metal and a noble metal/base metal electrode element layer electrochemically deposited thereon. The electrolytic solution has a conductivity between 10 and 60 mS/cm. The capacitor may be used in an implantable device.Type: ApplicationFiled: April 14, 2010Publication date: October 21, 2010Applicant: VISHAY SPRAGUE, INC.Inventors: Alex Eidelman, Ilia Skatkov, Vicki Segel, Pavel Vaisman, Hila Eshel, John Evans, Stephen Breithaupt, Sarah Lastella, Edward Fairfield
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Patent number: 7817404Abstract: A capacitor includes a metal case having an opening, a capacitor element accommodated in the metal case, an electrolyte accommodated in the metal case, and a sealing rubber sealing the opening of the metal case. The sealing rubber seals the opening of the metal case while the sealing rubber is compressed to have a stress applied thereto. The stress is not lower than 0.5 MPa and not higher than a predetermined maximum value. This capacitor prevents the electrolyte from leaking, thus having high reliability.Type: GrantFiled: April 18, 2006Date of Patent: October 19, 2010Assignee: Panasonic CorporationInventors: Teruhisa Miura, Kazuhiro Murakami, Masayuki Shinjou, Toshiyuki Kitagawa, Shusaku Kawasaki
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Patent number: 7746623Abstract: The present invention provides means for forming an oxide film on a metal surface, means for repairing a defect of an oxide film, a high-performance electrolytic capacitor using the means, and an electrolyte of the capacitor. Namely, the prevent invention provides a method for easily forming an oxide film on the surface of a metal or an alloy thereof by anodization using a solution containing an ionic liquid. In an application of this method, an electrolytic capacitor having means for repairing a defect of an oxide film can be formed by a method using, as an electrolyte, an ionic liquid, a solution containing an ionic liquid and a salt, or a solution containing an ionic liquid and a conductive polymer or a TCNQ salt, and a valve metal or an alloy thereof as a metal.Type: GrantFiled: July 15, 2008Date of Patent: June 29, 2010Assignee: Kaneka CorporationInventors: Mutsuaki Murakami, Masamitsu Tachibana, Hiroyuki Furutani, Hideo Yamagishi
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Publication number: 20100149727Abstract: In a capacitor, a capacitor elements of which positive and negative electrodes are drawn out in reverse directions is put in a metal case, and one electrode is bonded to the inner bottom of the metal case, and other electrode of the capacitor element is bonded to the inner side, and on the surface of a terminal plate sealing the opening of the metal case, a junction part of flat plate projecting to a position higher than the metal case is provided.Type: ApplicationFiled: December 11, 2006Publication date: June 17, 2010Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Teruhisa Miura, Shusaku Kawasaki, Hideki Shimamoto, Tatehiko Inoue
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Patent number: 7736398Abstract: A method is described for manufacturing a conductive polymer electrolytic capacitor. The method includes a step of aging a capacitor element including an electrolyte containing a conductive polymer and an ionic liquid by applying an aging voltage y (V) to the capacitor element to satisfy the following formula (1) or the following formula (2). In the following formulae (1) and (2), x represents a forming voltage for a valve metal. An electrolytic capacitor having a high withstand voltage is implemented by this method. 0.5x?y?x(0<x?48)??(1) 24?y?x(48<x)??(2).Type: GrantFiled: February 25, 2008Date of Patent: June 15, 2010Assignee: Kaneka CorporationInventors: Kazuyuki Tateishi, Mutsuaki Murakami, Hiroyuki Furutani
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Patent number: 7733631Abstract: A capacitor is presented that includes a housing, an electrode stack, a liner, and a fill port. The liner is located between the housing and the electrode stack. The liner includes a recessed portion. A fill port extends through the housing across from the recessed portion in the liner. A gap is formed between the recessed portion and the fill port.Type: GrantFiled: October 31, 2005Date of Patent: June 8, 2010Assignee: Medtronic, Inc.Inventors: Leo J. Brabeck, Jeffrey D. Chaput, Thomas M. Henderson, Thomas W. Kanitz, Jeffrey J. Louwagie, Christian S. Nielsen, Walter C. Sunderland
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Publication number: 20090273886Abstract: The capacitor has a capacitor element, a tubular metallic case, an electrolyte, and a terminal plate. The case contains the capacitor element and is joined to a first electrode of the capacitor element at its inner bottom surface. The terminal plate is joined to the second electrode of the capacitor element and seals the opening of the case. At least one of the terminal plate and the case is provided with a through hole, into which a hermetic plug made of a rubber-like elastic body and having an external diameter larger than a diameter of the through hole is inserted.Type: ApplicationFiled: December 8, 2006Publication date: November 5, 2009Inventors: Teruhisa Miura, Hideki Shimamoto, Shusaku Kawasaki, Masayuki Shinjou
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Publication number: 20090237861Abstract: Metal getter systems for use in electronic devices are provided. The getter systems taught herein include compartmentalized, metal getter systems for use in electrolytic environments present within electrolytic devices, such as electrolytic capacitors, without the problem of getter passivation. Such systems (50) can include a composite getter system (10) inserted into a central portion of an electrolytic capacitor (50) having a container (51), electrodes (52), and electrical contacts (54,54?).Type: ApplicationFiled: March 13, 2009Publication date: September 24, 2009Inventors: Ronald O. Peterson, Richard C. Kullberg, Luca Toia, Sergio Rondena, Johnny Mio Bertolo
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Patent number: 7589956Abstract: A sealed electrode enclosed in separator material is provided for use in a capacitor cell. The separator may either be adhered to the electrode in sheets, or may be formed into a pouch, which is used to enclose the electrode. A method of preparing the electrode sealed with separator is described in which an adhesive is used to secure the pouch to the electrode before sealing it. The prefabricated electrode and separator combination may be used in both coiled capacitor cells and flat capacitor cells that are often used in implantable medical devices. Electrodes prepared in this fashion can be efficiently and reliably aligned within the case of a capacitor cell, and have no exposed electrode surfaces that could lead to short-circuiting within the cell.Type: GrantFiled: February 9, 2006Date of Patent: September 15, 2009Assignee: Medtronic, Inc.Inventors: John D. Norton, Anthony W. Rorvick, Mark D. Breyen, Paul A. Pignato, Thomas P. Miltich
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Patent number: 7576972Abstract: A method is described for applying a double sealing system to an electro-technical device and an electro-technical device with a double seal. Said Electro-technical device has; a container (5) housing a functional unit (2) and including one aperture (52) provided with a cover (6), wherein said cover has a first face (61) abutting an annular surface (520) which borders said aperture (52); a first sealing joint (7) accommodated in a first groove (64) provided in the first face (61) of the annular surface (520), a second groove (65) provided on said first face (61) of the annular surface (520), and surrounding the first groove (64), said second groove (65) having a closed concavity not directly accessible from the exterior of the electro-technical device (1) when the cover is applied to the annular surface (520).Type: GrantFiled: November 28, 2003Date of Patent: August 18, 2009Assignee: Maxwell Technologies, Inc.Inventors: Etienne Savary, Cédric Scheidegger, Albert Galley
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Publication number: 20090147441Abstract: A closed type capacitor (1) includes: an external container (10) which cuts off gas; a pair of polarized electrodes contained in the external container (10); a separator arranged between the electrodes; and a non-aqueous electrolytic liquid containing electrolyte and a non-aqueous organic solvent if necessary. The external container (10) has an opening (10A) for communication between inside and outside the container and a valve mechanism (13) which is arranged to cover the opening (10A) and which is opened and closed by the pressure difference between the inside and outside the container (10). The electrolyte contains more than 30 mass % of ion liquid. This closed type capacitor can minimize separation of electrolyte in the valve path.Type: ApplicationFiled: August 29, 2005Publication date: June 11, 2009Applicants: NISSHINBO INDUSTRIES, INC., JAPAN RADIO CO., LTD.Inventors: Hiroshi Yoshida, Mitsugu Kotani, Shoko Marukane, Hideshige Nakagawa, Toshihiro Hamada, Yoji Higashi
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Publication number: 20090122468Abstract: A capacitor includes a metal case having an opening, a capacitor element accommodated in the metal case, an electrolyte accommodated in the metal case, and a sealing rubber sealing the opening of the metal case. The sealing rubber seals the opening of the metal case while the sealing rubber is compressed to have a stress applied thereto. The stress is not lower than 0.5 MPa and not higher than a predetermined maximum value. This capacitor prevents the electrolyte from leaking, thus having high reliability.Type: ApplicationFiled: April 18, 2006Publication date: May 14, 2009Inventors: Teruhisa Miura, Kazuhiro Murakami, Masayuki Shinjou, Toshiyuki Kitagawa, Shusaku Kawasaki
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Patent number: 7531010Abstract: According the present invention, anode foils are encapsulated in separator material so as to insulate them from the metal housing of an electrolytic capacitor. The present invention also provides for enclosed capacitor configurations for use in stacked capacitor configurations. Preferably, heat-sealable polymeric materials are used as separator materials to encapsulate or enclose the anode assemblies and capacitor configurations. The encapsulated anode assemblies and capacitor configurations of the present invention may be used in implantable cardioverter defibrillators.Type: GrantFiled: January 7, 2005Date of Patent: May 12, 2009Assignee: Pacesetter, Inc.Inventors: Christopher R. Feger, Thomas F. Strange
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Patent number: 7522403Abstract: A multilayer polymer film capacitor block, adapted to accept high currents. At least one multilayer polymer film capacitor is fit into a cavity defined in a rigid, thermally conductive structure. The cavity is sized and shaped to receive said multilayer polymer film capacitor when said capacitor is at a temperature below 40° C., but fitting said capacitor in a conformal manner so that as said capacitor is raised to temperatures above 40° C., said cavity constrains expansion of said capacitor.Type: GrantFiled: March 21, 2006Date of Patent: April 21, 2009Assignee: Rinehart Motion Systems, LLCInventors: Lawrence E. Rinehart, Guillermo L. Romero
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Patent number: 7519350Abstract: A structure is provided which is capable of reliably suppressing deformation caused by deterioration of a gasket member to maintain a dustproof function and of avoiding interference with other components mounted within electronic devices including a liquid crystal display panel. When the gasket member is made flat due to its secular changes (in geometry) and is made to extend in its width direction and, as a result, its inner wall face is deformed toward a central portion of an aperture attributed to an increase in the width of the gasket member, the deformation is suppressed by making an outer wall face of a stopping rib press the inner wall face of the gasket member.Type: GrantFiled: December 23, 2005Date of Patent: April 14, 2009Assignee: NEC CorporationInventors: Atsushi Yamamoto, Shigehiro Terada
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Patent number: 7518859Abstract: An HDD case is provided that enables direct connection of an interface connector and houses an HDD and that is superior in regard to vibration absorption, sound insulation, radiating heat, and waterproofness, and that consists of (1) a rectangular box-like case body, (2) a cover that have a heat sink, mounted via an adhesive synthetic-resin mat, and sound-absorbing materials; (3) a relay board that includes an internal connector fitted with an interface connector of the HDD, an external connector exposed to the outside so as not to protrude beyond the outside surface of the cover when the cover is closed, and wiring that connects the connectors; and (4) a waterproof seal that is applied all along the mating surface between the cover and the opening at the top of the case body and between the cover and the upper opening surface of the external connector.Type: GrantFiled: June 1, 2007Date of Patent: April 14, 2009Assignee: Grow Up Japan, Inc.Inventor: Toshihiro Kobayashi
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Patent number: 7492572Abstract: 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. The electrolyte solution containing the aluminum tetrafluoride salt is used. The moisture content of the capacitor element is adjusted to 0.7% by weight or less, wit respect to the weight of the capacitor element, preferably 0.5% by weight or less, and most preferably 0.4% by weight or less. In this way, the electrolytic capacitor having the low impedance characteristic and the high resistance voltage characteristic, and the excellent high temperature life characteristic is provided.Type: GrantFiled: November 7, 2003Date of Patent: February 17, 2009Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7474521Abstract: A capacitor including a flexible case and method for manufacturing the same are provided. The capacitor includes an electrode assembly encased in a sealed flexible case. The electrode assembly includes an anode formed from a high surface area valve metal and a cathode operatively positioned relative to the anode. The flexible case may conform to an exterior contour of the electrode assembly.Type: GrantFiled: February 28, 2006Date of Patent: January 6, 2009Assignee: Medtronic, Inc.Inventor: Joachim Hossick-Schott
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Patent number: 7468222Abstract: An electrochemical device comprises a matrix 60 including an anode 10 and a cathode 20, an electrolyte, and a shell 50 for accommodating the matrix 60 and electrolyte in a closed state. The shell 50 includes an upper lid 52, a lower lid 54, and a gasket 56. At least one of the upper lid 52 and lower lid 54 is formed with a projection protruding toward the matrix 60 so that the upper lid 52 and the anode 10 electrically come into contact with each other and that the lower lid 54 and the cathode 20 electrically come into contact with each other.Type: GrantFiled: December 21, 2004Date of Patent: December 23, 2008Assignee: TDK CorporationInventors: Tetsuya Takahashi, Masayuki Ohtsuka, Kunio Miyabara, Saburou Tsuchida, Mitsuyoshi Harano
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Patent number: 7457102Abstract: A capacitor is provided to overcome the following problem: when plural capacitors are linked, a large coupling space is required because an anode and a cathode are brought out through the opposite ends, so that downsizing of the capacitor is difficult. The capacitor also allows easy electrical and mechanical coupling, reducing the required coupling space and unnecessary resistance. According to a structure of the capacitor, capacitor element (2) is enclosed in mechanical housing (3) having an opening sealed by terminal plate (4). Terminal slip (5), which includes rib (5b) to be coupled to one of the anode and the cathode of capacitor element (2) and terminal (5a), is insert-molded into terminal plate (4). The other of the anode and the cathode is coupled to an inner bottom face of metal housing (3). The one of the anode and the cathode is brought out through terminal (5a), and the other of the anode and the cathode is brought out through metal housing (3), thus a lower resistance is expected.Type: GrantFiled: May 26, 2005Date of Patent: November 25, 2008Assignee: Panasonic CorporationInventors: Teruhisa Miura, Hideki Simamoto, Tatehiko Inoue, Tsuyoshi Yoshino
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Patent number: 7365962Abstract: A capacitor includes a hollow capacitor element formed by rolling a pair of flat sheet-like electrodes and, with separators interposed therebetween, a bottom-closed metallic casing receiving the capacitor element and a drive electrolyte therein, and an opening-sealing plate sealing an opening portion of the metallic casing, the opening-sealing plate having an external connection terminal. A rubber-like elastic member is provided on a surface of the opening-sealing plate at a peripheral edge portion thereof, and an electrically-insulating layer is formed on the metallic casing to cover at least a region extending from the open end of the metallic casing to a recess provided for fixing the opening-sealing plate, and the rubber-like elastic member is pressed by the open end portion of the metallic casing.Type: GrantFiled: March 18, 2004Date of Patent: April 29, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Teruhisa Miura, Yoshio Miyazaki
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Patent number: 7348097Abstract: An insulative feedthrough receives an electrical lead therethrough and includes a ferrule having fist and second open ends and an interior surface. At least one polymeric guide member is positioned substantially within the first end of the ferrule and has an aperture therethrough for receiving the lead. An insulating material is deposited in the ferrule through the second end for sealingly engaging the lead and the interior surface of the ferrule.Type: GrantFiled: June 17, 2003Date of Patent: March 25, 2008Assignee: Medtronic, Inc.Inventors: Christian S. Nielsen, Timothy T. Bomstad
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Patent number: 7274551Abstract: A hermetically sealed, electrolytic capacitor is provided having a lid incorporating a liquid seal on the wet side of the lid and a hermetic seal on the dry side of the lid. The lid includes a plate, with a hole through its thickness, and a flange creating an orifice in the hole, adjacent the underside of the lid. A liquid seal is positioned in the orifice and has a terminal insulated from the plate by an elastomeric ring. The terminal is electrically connected to the capacitor element on its wet side, and the terminal is electrically connected to the hermetic seal on its dry side.Type: GrantFiled: October 26, 2006Date of Patent: September 25, 2007Assignee: Cornell-Dubilier Marketing, Inc.Inventors: Samuel G. Parler, Jr., Philip A. Knight
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Publication number: 20070217124Abstract: A capacitor having a large current carrying capacity includes a hollow core formed by a non-conducting tubular section, and a capacitor winding wrapped around the tubular section. A thermal cutoff device is disposed within the hollow core. The thermal cutoff device is configured to sense a predetermined temperature level within the hollow core and disable the current carrying capacity of the capacitor. The thermal cutoff device is disposed at a geometric center of the capacitor winding, which is also the hot spot of the capacitor winding. The thermal cutoff device includes first and second conductors electrically connected to each other with a predetermined solder alloy. The first conductor includes a cross-sectional portion that is attached to the second conductor. The cross-sectional portion is subjected to a springing force in a lateral direction away from the second conductor.Type: ApplicationFiled: March 13, 2007Publication date: September 20, 2007Inventors: Bernard Lavene, David Curto, Alan Schach
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Patent number: 7268995Abstract: An electric double layer capacitor is composed of a pair of current collectors, a positive polarizable electrode provided on one of the pair of current collectors, a negative polarizable electrode provided on the other of the pair of current collectors, a separator between the positive and negative polarizable electrodes, and an organic electrolytic solution which impregnates at least the positive and negative polarizable electrodes and the separator. The capacitor has a theoretical amount of ions Qt defined as Qt (moles)=C×V÷96,500, wherein C is the rated capacitance (farads) of the capacitor and V is the rated voltage (volts), and an amount of ions Qe in the organic electrolytic solution, such that Qe/Qt=1.7 to 3.5. The capacitor has a high voltage rating, excellent cycle characteristics during high-current charging and discharging, and a low internal resistance in low-temperature environments.Type: GrantFiled: September 25, 2006Date of Patent: September 11, 2007Assignee: Nisshinbo Industries, Inc.Inventors: Hiroshi Yoshida, Kanako Yuyama
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Patent number: 7256983Abstract: An electrolytic capacitor having a low impedance characteristic, and a high withstand voltage characteristic in the 100V class, provides excellent high temperature life and leakage characteristics. An electrolyte solution containing an aluminum tetrafluoride salt is used. Moreover, a ceramics coating layer or an insulating synthetic resin layer is formed at a contact portion with a sealing component of a rivet or a cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber with added peroxide as a cross-linking agent to a butyl rubber polymer containing isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.Type: GrantFiled: November 7, 2003Date of Patent: August 14, 2007Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7215532Abstract: A method for manufacturing electrical components of the energy-accumulating electrostatic or electrochemical type, consisting in winding at least two layers of a film on a support made of an electrically nonconducting material that has a substantially polygonal cross-section, by providing a preset number of film turns until a predefined thickness is reached, and forming a first layer; arranging respective spacers at the corners of the polygon in which the contour of the wound film is inscribed; and winding more turns of film around the first layer and around the spacers inserted at the corners, to form a second layer. A machine by means of which the method is performed comprises a rotatingly mounted frame on which the support is fixed for winding of the layer of film.Type: GrantFiled: February 17, 2005Date of Patent: May 8, 2007Assignee: Arcotronics Industries S.p.AInventors: Sauro Righi, Mirko Mazza
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Patent number: 7206186Abstract: An electrolytic capacitor is provided having a metal-glass-metal hermetic seal and a liquid seal, which protects the hermetic seal from the electrolyte solution in the capacitor. The liquid seal is formed by compressing an elastomeric ring between the underside of the lid of the capacitor and a terminal plate, connected to the capacitor element, whereby compression of the elastomeric seal is maintained by the lead, which connects the terminal plate and a metal post in the hermetic seal.Type: GrantFiled: May 31, 2006Date of Patent: April 17, 2007Assignee: Cornell Dubilier Marketing, Inc.Inventors: Philip A. Knight, Samuel G. Parler, Jr., Jerry W. Norris
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Patent number: 7141332Abstract: The present invention pertains to lightweight, hard and leakproof prismatic packaging structures for electrochemical devices and economical method of assembly and hermetic sealing of said structures by plastic layers attached to their metal walls. Metal welding is avoided and superior protection of lithium polymer cells and other cells is thus provided at lesser cost.Type: GrantFiled: July 23, 2002Date of Patent: November 28, 2006Inventors: Joseph B. Kejha, David Chua, Hsiu-Ping Lin
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Patent number: 6952339Abstract: A capacitor and a method for assembling a capacitor. A capacitor is assembled from a case, which contains an anode that is electrically insulated from the case by isolators. A washer is placed above the anode. This washer transfers force from a capacitor cap to the isolators and anode, securing the anode in place. A cap is placed on the case. The cap may be shaped as a toroid with an outer and an inner annular wall. The annular walls may meet at the top and have an opening at the bottom creating a cap cavity in order to store electrolyte or other materials in the cap. The cap also supports a glass seal that insulates the lead tube and lead wire coming from the anode. Once assembled, the capacitor is filled with electrolyte. A weld extends around the cap to secure the cap to the case. The weld may be administered from the top of the capacitor.Type: GrantFiled: May 13, 2004Date of Patent: October 4, 2005Inventor: Todd Knowles
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Patent number: 6898066Abstract: The present invention relates to a structure of chip type electrolytic capacitor, which comprises a casing cover and a partition to separate space of casing cover into a dielectric chamber and a buffer chamber, a dielectric which includes lead pins, holes on the partition for the lead pins pass through. The dielectric is installed in the dielectric chamber, and lead pins pass through the holes on partition and extend to the buffer chamber. The buffer chamber is sealed with a bottom cover which also includes holes for lead pins. A stuff of epoxide is filled into the buffer chamber to fix the dielectric and its lead pins. A top cover is to seal the dielectric chamber for filling electrolyte. The casing cover is made with high strength engineering plastic by plastic injection machine. A supersonic welding and the epoxide adhesive solidification package technologies replace rubber packing.Type: GrantFiled: June 21, 2004Date of Patent: May 24, 2005Inventor: Chieh-Fu Lin
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Patent number: 6842330Abstract: A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first electrode comprising carbon which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first electrode comprising carbon and separating the first electrode from a second electrode comprising carbon. A second current collector foil is juxtaposed against a side of the second electrode and is electrically coupled to the second terminal.Type: GrantFiled: September 6, 2002Date of Patent: January 11, 2005Assignee: Maxwell Technologies, Inc.Inventors: C. Joseph Farahmandi, John M. Dispennette, Edward Blank, Robert W. Crawford, Chenniah Nanjundiah
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Publication number: 20040207974Abstract: 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: ApplicationFiled: May 11, 2004Publication date: October 21, 2004Applicant: RUBYCON CORPORATIONInventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa