Superconductor Having Metal Connect, Pad, Connect Structure, Or Patterned Superconductor Circuit, Per Se Patents (Class 505/220)
  • Patent number: 11189398
    Abstract: A superconducting electrical power distribution system has a superconducting bus bar and one or more bus bar thermal conductor lines extending in thermal proximity along the bus bar to receive heat from the bus bar over the length of the bus bar. The system further has superconducting cables electrically connected to the bus bar at respective electrical joints distributed along the bus bar. The system further has a cryogenic cooling sub-system. The system further has a network comprising first and second thermal conductor lines, each line comprising a cold end which is cooled by the cryogenic cooling sub-system, and an opposite hot end, whereby heat received by each line is normally conducted along the line in a direction from its hot end to its cold end.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: November 30, 2021
    Assignee: Rolls-Royce PLC
    Inventor: Chloe J. Palmer
  • Patent number: 11114602
    Abstract: Methods and structures corresponding to superconducting apparatus including superconducting layers and traces are provided. A method for forming a superconducting apparatus includes forming a first dielectric layer on a substrate by depositing a first dielectric material on the substrate and curing the first dielectric material at a first temperature. The method further includes forming a first superconducting layer comprising a first set of patterned superconducting traces on the first dielectric layer. The method further includes forming a second dielectric layer on the first superconducting layer by depositing a second dielectric material on the first superconducting layer and curing the second dielectric material at a second temperature, where the second temperature is lower than the first temperature. The method further includes forming a second superconducting layer comprising a second set of patterned superconducting traces on the second dielectric layer.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: September 7, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Richard P. Rouse, David B. Tuckerman
  • Patent number: 10985476
    Abstract: A cylindrical joint for connecting sub-cables of a superconducting busbar includes a stainless steel shell, stainless steel pressure plates, first sub-cables, second sub-cables, copper saddles, a stainless steel support, indium coatings, stainless steel tapers. First and second sub-cables are supported by the stainless steel support. The first sub-cables and the second sub-cables are embedded into the grooves on the stainless steel support in sequence. The copper saddles are embedded into each of the grooves, and the indium coating is plated on both sides of the copper saddle, respectively. The stainless steel pressure plate is welded to the stainless steel support. The outer side of the joint is the stainless steel shell. The cylindrical joint of the disclosure has a low resistance, a lower AC loss, less materials, and a good cooling performance.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 20, 2021
    Assignee: HEFEI INSTITUTES OF PHYSICAL SCIENCE, CHINESE ACAD
    Inventors: Kun Lu, Yuntao Song, Xiongyi Huang, Xinjie Wen, Chen Liu
  • Patent number: 9065267
    Abstract: A superconducting device (1) has an elongated coated conductor (2), with a substrate (3) and a quenchable superconducting film (4), wherein the elongated coated conductor (2) has a width W, and an external shunt system (5), with bridge contacts (6; 6a, 6b), electrically connected to the superconducting film (4), and a resistive member (7), thermally insulated from the coated conductor (2) and electrically connected to the bridge contacts (6; 6a, 6b). The device is is characterized in that the bridge contacts (6; 6a, 6b) along the elongated coated conductor (2) have a spacing SP with SP?8*W. The device reduces the risk of a burnout of a superconducting device in case of a quench in its superconducting film.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: June 23, 2015
    Assignee: Bruker HTS GmbH
    Inventor: Alexander Usoskin
  • Patent number: 9014771
    Abstract: A layered superconductor device includes multiple layers of a single crystal superconducting material having intermittent layers of superconducting material dispersed in a pattern with a second material such that each layer of the multiple layers a single crystal superconducting material are interconnected via superconducting material, allowing for a continuous current path, and a thickness of the superconducting material never exceeds a first predetermined thickness.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: April 21, 2015
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas O. Jones, III
  • Patent number: 9008739
    Abstract: In a terminal structure of a superconducting cable conductor, a terminal portion of the superconducting cable conductor is connected with a terminal member of a good conductor. The terminal portion includes a superconducting layer disposed on an outer periphery of a central support; and an insulating layer surrounding the superconducting layer. The insulating layer and the superconducting layer are partially removed to expose the central support and the superconducting layer in this order from an end of the superconducting cable conductor. The terminal member includes a metal sleeve which includes a first cylindrical portion whose inner surface is in close contact with an exposed portion of the central support; a second cylindrical portion which is soldered around an exposed portion of the superconducting layer; and a third cylindrical portion into which the insulating layer is inserted.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: April 14, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Shinichi Mukoyama, Masashi Yagi, Tomoya Nomura, Shuka Yonemura
  • Patent number: 8989829
    Abstract: A layered superconductor device includes multiple layers of a single crystal superconducting material having intermittent layers of superconducting material dispersed in a pattern with a second material such that each layer of the multiple layers a single crystal superconducting material are interconnected via superconducting material, allowing for a continuous current path, and a thickness of the superconducting material never exceeds a first predetermined thickness.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 24, 2015
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas O. Jones, III
  • Patent number: 8954125
    Abstract: Low-loss superconducting devices and methods for fabricating low loss superconducting devices. For example, superconducting devices, such as superconducting resonator devices, are formed with a (200)-oriented texture titanium nitride (TiN) layer to provide high Q, low loss resonator structures particularly suitable for application to radio-frequency (RF) and/or microwave superconducting resonators, such as coplanar waveguide superconducting resonators. In one aspect, a method of forming a superconducting device includes forming a silicon nitride (SiN) seed layer on a substrate, and forming a (200)-oriented texture titanium nitride (TiN) layer on the SiN seed layer.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 10, 2015
    Assignees: International Business Machines Corporation, The United States of America, as represented by the Secretary of Commerce, The National Institute of Standards
    Inventors: Antonio D. Corcoles Gonzalez, Jiansong Gao, Dustin A. Hite, George A. Keefe, David P. Pappas, Mary E. Rothwell, Matthias Steffen, Chang C. Tsuei, Michael R. Vissers, David S. Wisbey
  • Patent number: 8943686
    Abstract: A method for coupling ends of two insulated conductors includes coupling a core of a first insulated conductor to a core of a second insulated conductor. Exposed portions of the cores are located inside a box with an open top. Electrically insulating powder material is placed into the box and a first plunger is inserted through the open top of the box to compact the powder material. Additional electrically insulating powder material is placed into the box and a second plunger is inserted through the open top of the box to compact the powder material into compacted powder material that surrounds the exposed portions of the cores. The compacted powder material is formed into a substantially cylindrical shape. A sleeve is placed over the compacted powder material and coupling the sleeve to the jackets of the insulated conductors.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: February 3, 2015
    Assignee: Shell Oil Company
    Inventors: Carrie Elizabeth Hartford, David Stuart Morgan
  • Patent number: 8918152
    Abstract: Disclosed are devices comprising multiple nanogaps having a separation of less than about 5 nm. Also disclosed are methods for fabricating these devices.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: December 23, 2014
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Douglas R. Strachan, Danvers E. Johnston, Beth S. Guiton, Peter K. Davies, Dawn A. Bonnell, Alan T. Johnson, Jr.
  • Publication number: 20140357496
    Abstract: A superconducting device (1) has an elongated coated conductor (2), with a substrate (3) and a quenchable superconducting film (4), wherein the elongated coated conductor (2) has a width W, and an external shunt system (5), with bridge contacts (6; 6a, 6b), electrically connected to the superconducting film (4), and a resistive member (7), thermally insulated from the coated conductor (2) and electrically connected to the bridge contacts (6; 6a, 6b). The device is is characterized in that the bridge contacts (6; 6a, 6b) along the elongated coated conductor (2) have a spacing SP with SP?8*W. The device reduces the risk of a burnout of a superconducting device in case of a quench in its superconducting film.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 4, 2014
    Inventor: Alexander Usoskin
  • Patent number: 8897846
    Abstract: A process produces a connecting structure between two superconductors, in particular magnesium diboride superconductors embodied as a superconducting core wire surrounded by normally conducting metal. A substance which reduces the melting point of magnesium is admixed to a substance mixture including magnesium and boron, and the exposed ends of the core wires are brought into contact with the substance mixture, which is caused to react in situ at a reaction temperature corresponding to the lower melting point to give magnesium diboride.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: November 25, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Antje Drechsler, Wilfried Goldacker, Marijn Pieter Oomen, Jacob Johan Rabbers, Sonja Schlachter
  • Patent number: 8880134
    Abstract: This invention relates to a superconductor device, comprising: a superconductor; a former which supports the superconductor; and, an intermediate electrical connector attached to the former for coupling the superconductor to a power source, wherein the intermediate electrical connector is connected to the superconductor via a deformable portion in the intermediate electrical connector, wherein the deformable portion allows relative movement between the superconductor and former.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: November 4, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Stephen M. Husband, Alexander C. Smith, Nigel Schofield, Andrew Oliver
  • Publication number: 20140323313
    Abstract: A new type of superconducting fault current limiter is disclosed, which can advantageously be used with high voltage transmission networks. The circuit is electrically connected to two terminals, which connect to the transmission network. The superconducting circuit is located within an enclosure or tank, which is electrically isolated from ground. Therefore, the voltage difference between the enclosure and the superconducting circuit, and between the enclosure and the terminals are significantly less than exist in current deployments. In some embodiments, the enclosure is electrically connected to one of the terminals, while in other embodiments, the enclosure is electrically isolated from the terminals. The circuit can be combined with other like circuits to address a wide range of current transmission network configurations.
    Type: Application
    Filed: July 7, 2014
    Publication date: October 30, 2014
    Inventors: Kasegn D. Takletsadik, Roger B. Fish, Paul J. Murphy
  • Patent number: 8862193
    Abstract: A connector assembly of a superconducting fault current limiter includes a first superconducting tape element, an electrical connector electrically coupled to the first superconducting element at a first region of the electrical conductor, and a second superconducting tape element electrically coupled to the electrical connector in a second region of the electrical connector. The electrical connector comprises a unitary structure. The first superconducting tape element, the electrical connector, and the second superconducting tape element comprise may comprise a layer.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: October 14, 2014
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventor: Kasegn D. Tekletsadik
  • Publication number: 20140249034
    Abstract: A superconducting element for a superconducting fault current limiter, including a substrate 32, an intermediate layer 34 that is formed on the substrate 32, a superconducting layer 36 that is formed on the intermediate layer 34, an electrode 44 that is connected to the superconducting layer 36, and a metal fine particle sintered layer 40 that is interposed between the superconducting layer 36 and the electrode 44 and connects the superconducting layer 36 and the electrode 44.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 4, 2014
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomohiro NAKAYAMA, Weiming ZHOU, Hajime KASAHARA, Kengo NAKAO, Akifumi NAKAJIMA, Masakazu MATSUI
  • Patent number: 8755853
    Abstract: A contact element (4) provided with an electrical connection element (4A), and intended for a superconducting cable unit arranged in a refrigerant, has an electrically conductive plate intended to be borne mechanically by the unit and to be electrically connected to the cable. The plate has through slots (4E, 4E?, 4E?) intended to form thermal conduction baffles.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: June 17, 2014
    Assignee: Nexans
    Inventors: Nicolas Lallouet, Sébastien Delplace
  • Patent number: 8731629
    Abstract: A junction box is provided which allows serial connection of the individual conductors of at least one high temperature superconductor (HTS) wire bundle. The junction box includes an electrical interface device disposed within a junction box housing. The interface device is configured receive both ends of each conductor of each HTS wire bundle, and to provide a superconductive electrical connection between respective first ends of conductors to respective second ends of other wire bundle conductors to form at least one superconductive multi-turn electromagnetic winding.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: May 20, 2014
    Assignee: American Superconductor Corporation
    Inventors: Christopher G. King, James F. Maguire
  • Patent number: 8716188
    Abstract: A superconducting article includes first and second stacked conductor segments. The first stacked conductor segment includes first and second superconductive segments and has a nominal thickness tn1. The second stacked conductor segment includes third and forth superconductive segments and has a nominal thickness tn2. The superconducting article further includes a joint region comprising a first splice connecting the first and third superconductive segments together and a second splice connecting the second and forth superconductive segments together. The first splice is adjacent to and bridged portions of the first and third superconductive segments along at least a portion of the joint region, and the second splice is adjacent to and bridged portions of the second and forth superconductive segments along at least a portion of the joint region. The joint region has a thickness tjr, wherein tjr is not greater than at least one of 1.8tn1 and 1.8tn2.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: May 6, 2014
    Assignee: SuperPower, Inc.
    Inventors: Yi-Yuan Xie, Kenneth P. Lenseth, Justin Waterman, Venkat Selvamanickam
  • Patent number: 8718733
    Abstract: A superconducting fault current limiter recovery system includes a superconducting fault current limiter, a shunt electrically coupled in parallel with the superconducting fault current limiter, and a bypass path also electrically coupled in parallel with the superconducting fault current limiter. The bypass path enables a load current to flow through the bypass path during a bypass condition. Thus, load current may be quickly reestablished to serve loads after a fault condition via the bypass path while a superconductor of the superconductor fault current limiter has time to return to a superconducting state after the fault condition.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: May 6, 2014
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Paul J. Murphy, Gary E. Dickerson
  • Patent number: 8700109
    Abstract: Techniques for improving reliability of a superconducting fault current limiting system (SCFCL) are provided. In one particular exemplary embodiment, the techniques may be realized with a superconducting fault current limiting system (SCFCL) comprising: an input current lead and an output current lead, each current lead coupled to a power distribution/transmission network; a container; a superconductor contained in the container; a shunt disposed outside the container and in parallel with the superconductor; a cryogenic system configured to provide coolant into the container; and at least one sensor disposed near and configured to monitor at least one operating condition of at least one of the input current lead and the output current lead, the superconductor, and the shunt.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: April 15, 2014
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Mark R. Amato, Paul J. Murphy, Kasegn D. Tekletsadik
  • Patent number: 8649834
    Abstract: A layered superconductor device includes multiple layers of a single crystal superconducting material having intermittent layers of superconducting material dispersed in a pattern with a second material such that each layer of the multiple layers a single crystal superconducting material are interconnected via superconducting material, allowing for a continuous current path, and a thickness of the superconducting material never exceeds a first predetermined thickness.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 11, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas O. Jones
  • Patent number: 8644898
    Abstract: A device includes a circuitry layer having one or more circuitry regions and a superconducting layer having a plurality of naturally-occurring defects. Potential wells are formed in the superconducting layer and located outside of the bounds of the circuitry regions. A pattern of engineered defects is formed in the superconducting layer and are configured such that, upon encountering a pulse of electromagnetic energy applied at a high potential region of the superconducting layer prior to energizing any circuits within the circuitry layer and when the superconducting layer is in a superconducting state, magnetic flux trapped within the naturally-occurring defects is directed to one or more of the potential wells.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: February 4, 2014
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Marcio C. De Andrade, Anna M. Leese De Escobar
  • Patent number: 8644897
    Abstract: Provided is a superconducting apparatus, including a joint of superconducting wires having high electric conduction characteristics and a superconducting magnet or the like. The superconducting joint comprises a plurality of superconducting wires and a sinter which integrates the plurality of superconducting wires. Herein, at least any one of the superconducting wires is a MgB2 superconducting wire, the sinter contains MgB2, and the sinter is compressed form the direction different from the direction toward which the superconducting wires protrude. Further, in order to form such a joint, a compression vessel provided with an opening used for introducing raw material powders to construct the sinter and another opening used for inserting the superconducting wires is utilized, and the openings are directed to different directions each other. Accordingly, MgB2 is filled in the sinter at high density, allowing the joint structure to have a good bonding property among particles.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: February 4, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yota Ichiki, Tsuyoshi Wakuda, Kazuhide Tanaka
  • Patent number: 8600464
    Abstract: This invention relates to a superconducting fault current limiter, including: an input segment of an input transformer core and an output segment of an output transformer, each segment having a first end and a second end; a length of superconductor which forms a winding around the input segment and a winding around output segment, wherein the windings are connected in series to form a closed loop; a cryostat in which the superconductor is housed; wherein each end of the input and output segments are exposed to the exterior of the cryostat.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 3, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Huw L. Edwards, Christopher G. Bright, Stephen M. Husband
  • Patent number: 8588876
    Abstract: An electric joint design to be used in electromagnetic coils made with high-temperature superconducting tape, aspected wire, or cable. A terminal member contains an engraved twist-bend contour, which receives the coil and changes the direction of the coil by about 90 degrees without any hard-bends. A current lead is aligned with terminal section of the coil establishing an electric joint whose length is not limited by the coil geometry. Resistance is distributed along the length of the electric joint to reduce heat generation. The electric joint is placed away from the area where the magnetic forces are high to eliminate the problem of helium gas becoming trapped.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: November 19, 2013
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Ulf Peter Trociewitz, David K. Hilton, Youri Viouchkov, Matthieu Dalban-Canassy
  • Patent number: 8530389
    Abstract: An improved process for the preparation of oxide superconducting rods. The present invention provides a process for the preparation of oxide superconducting rods. The process includes the steps of a cold isopressing process without addition of binder, particularly thin and those based on Ag-added (Bi,Pb)2 Sr2 Ca2 Cu3 O10+x is disclosed.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: September 10, 2013
    Assignee: Council of Scientific & Industrial Research
    Inventors: Narinder Kumar Arora, Gursharan Kaur Padam, Ramesh Sethi, Mukul Sharma, Shrikant Narayan Ekbote
  • Publication number: 20130102474
    Abstract: In a terminal structure of a superconducting cable conductor, a terminal portion of the superconducting cable conductor is connected with a terminal member of a good conductor. The terminal portion includes a superconducting layer disposed on an outer periphery of a central support; and an insulating layer surrounding the superconducting layer. The insulating layer and the superconducting layer are partially removed to expose the central support and the superconducting layer in this order from an end of the superconducting cable conductor. The terminal member includes a metal sleeve which includes a first cylindrical portion whose inner surface is in close contact with an exposed portion of the central support; a second cylindrical portion which is soldered around an exposed portion of the superconducting layer; and a third cylindrical portion into which the insulating layer is inserted.
    Type: Application
    Filed: May 30, 2011
    Publication date: April 25, 2013
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Shinichi Mukoyama, Masashi Yagi, Tomoya Nomura, Shuka Yonemura
  • Patent number: 8340737
    Abstract: A current lead (1) for connecting a superconducting load system (5), in particular, a magnet coil, to a current feed point (3a) that is at a higher temperature than the load system (5) comprises a flat, elongated carrier (6) and a plurality of mechanical and electrical parallel high-temperature superconductors (HTSC) (10), wherein the HTSCs (10) are disposed side by side on the carrier (6). The carrier (6) is made of stainless steel, and a plurality of HTSCs (10) are each disposed side by side on two opposite carrier (6) sides of the carrier. The carrier (6) is constituted in the shape of a plate with cut-outs (15; 15a-15d). The current lead has a high current capacity and low thermal conductivity and provides improved emergency conduction properties in case of failure of the superconductivity in the HTSC.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: December 25, 2012
    Assignee: Bruker HTS GmbH
    Inventors: Tabea Arndt, Martin Munz, André Aubele, Bernd Sailer
  • Publication number: 20120309631
    Abstract: A current lead (1) for connecting a superconducting load system (5), in particular, a magnet coil, to a current feed point (3a) that is at a higher temperature than the load system (5) comprises a flat, elongated carrier (6) and a plurality of mechanical and electrical parallel high-temperature superconductors (HTSC) (10), wherein the HTSCs (10) are disposed side by side on the carrier (6). The carrier (6) is made of stainless steel, and a plurality of HTSCs (10) are each disposed side by side on two opposite carrier (6) sides of the carrier. The carrier (6) is constituted in the shape of a plate with cut-outs (15; 15a-15d). The current lead has a high current capacity and low thermal conductivity and provides improved emergency conduction properties in case of failure of the superconductivity in the HTSC.
    Type: Application
    Filed: July 30, 2010
    Publication date: December 6, 2012
    Applicant: Bruker HTS GmbH
    Inventors: Tabea Arndt, Martin Munz, André Aubele, Bernd Sailer
  • Patent number: 8315678
    Abstract: Superconducting connections are provided to internal layers of a multi-layer circuit board structure, for example by superconducting vias.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: November 20, 2012
    Assignee: D-Wave Systems Inc.
    Inventor: Sergey V. Uchaykin
  • Publication number: 20120289405
    Abstract: A contact element (4) provided with an electrical connection element (4A), and intended for a superconducting cable unit arranged in a refrigerant, has an electrically conductive plate intended to be borne mechanically by the unit and to be electrically connected to the cable. The plate has through slots (4E, 4E?, 4E?) intended to form thermal conduction chicanes.
    Type: Application
    Filed: April 30, 2012
    Publication date: November 15, 2012
    Inventors: Nicolas Lallouet, Sébastien Delplace
  • Patent number: 8306590
    Abstract: Disclosed is a three layer process for making contact points to a high transition temperature superconductor (HTSC), particularly to (Bi,Pb)2 Sr2 Ca2 CU3019+x with and without silver in the superconductor. The contact structure is a three layer configuration with a perforated silver foil (3) sandwiched between two metal spray gun deposited silver layers (2,5) and subsequent heat treatment in air. The contact has been made on tubes and rods (1). The silver contacts are capable of carrying a continuous current of 200 Amps without adding any substantial heat load to the cryogen used to cool the HTSC. The contact resistance at 4.2 K is in the range of 1.5×10 (hoch?8) to 8.5? 10 (hoch?8) OHM in zero applied filed.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: November 6, 2012
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shrikant Ekbote, Gursharan Kaur Padam, Narendra Kumar Arora, Mukul Sharma, Ramesh Sethi, Mrinal Kanti Banerjee
  • Patent number: 8304372
    Abstract: The present invention provides a process for joining oxide-superconducting tubes with a superconducting joint. The process involves the preparation of a partially preformed superconducting material, followed by cold isopressing of the powder of partially performed superconducting material into tube shape and further provided with grooves at both ends of the tubes with a subsequent deposition of a silver layer. The process further involves the lapping of one of the end faces of a pair of said tubes to be joined. These lapped end faces of both the tubes clubbed together on a common silver bush are coated with a paste of the same partially preformed superconducting material in organic formulation. Then these coated end faces are closed pressed together to form a joint. This joint portion and the end portions of the tubes are wrapped with a perforated silver foil followed by deposition of another layer of silver.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: November 6, 2012
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shrikant Narayan Ekbote, Gursharan Kaur Padam, Narendra Kumar Arora, Mukul Sharma, Ramesh Sethi
  • Patent number: 8280467
    Abstract: A cooling system includes a first section of high temperature superconducting (HTS) cable configured to receive a first flow of coolant and to permit the first flow of coolant to flow therethrough. The system may further include a second section of high temperature superconducting (HTS) cable configured to receive a second flow of coolant and to permit the second flow of coolant to flow therethrough. The system may further include a cable joint configured to couple the first section of HTS cable and the second section of HTS cable. The cable joint may be in fluid communication with at least one refrigeration module and may include at least one conduit configured to permit a third flow of coolant between said cable joint and said at least one refrigeration module through a coolant line separate from said first and second sections of HTS cable. Other embodiments and implementations are also within the scope of the present disclosure.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: October 2, 2012
    Assignee: American Superconductor Corporation
    Inventors: Jie Yuan, James Maguire
  • Publication number: 20120245033
    Abstract: A superconducting cable terminal connection device connecting a terminal of a superconducting cable for power transmission to an external power system, includes: an electric field relaxation shield disposed inside an insulation housing; a horizontal conductor fixed to an end portion of a core of the superconducting cable drawn into the electric field relaxation shield; an insulator which coats an outer periphery of the horizontal conductor; a vertical conductor which is drawn into the electric field relaxation shield and has a through-hole through which the horizontal conductor and the insulator pass so as to be slidable in a lengthwise direction; and a flexible electrical conduction member which electrically connects an end portion of the horizontal conductor to the vertical conductor.
    Type: Application
    Filed: September 19, 2011
    Publication date: September 27, 2012
    Applicant: LS CABLE LTD.
    Inventors: Seok Ju LEE, Su Kil LEE, Hyun Man JANG, Chang Youl CHOI
  • Patent number: 8271061
    Abstract: A connection arrangement for connecting together two superconductor cables, each having a central conductor comprising at least one superconductive part, a dielectric layer surrounding said central conductor, a shield surrounding said dielectric layer and a cryogenic enclosure surrounding said shield, the connection arrangement has an electrical splicing device for splicing together the central conductors and stripped dielectric layers of the corresponding shields. This connection arrangement has a covering made of semi-conductive material that is placed between the two shield ends and an electrical connection device for connecting together the two shield ends, the connection device surrounding the covering, being contained in the cryogenic enclosure, and comprising two junction elements each electrically and mechanically joined to a respective one of the shield ends, and an electrical splicing arrangement for splicing together the two junction elements.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: September 18, 2012
    Assignee: Nexans
    Inventor: Nicolas Lallouet
  • Patent number: 8263531
    Abstract: Under one aspect, a laminated, spliced superconductor wire includes a superconductor joint, which includes (i) first and second superconductor wires, each wire including a substrate, a superconductor layer overlying the substrate, and a cap layer overlying the superconductor layer; and (ii) a conductive bridge, the conductive bridge including a substrate, a superconductor layer overlying the substrate, and a cap layer overlying the superconductor layer, wherein the cap layer of the conductive bridge is in electrically conductive contact with a portion of the cap layer of each of the first and second superconductor wires through an electrically conductive bonding material. The spliced wire also includes (b) a stabilizer structure surrounding at least a portion of the superconductor joint, wherein the superconductor joint is in electrical contact with the stabilizer structure; and (c) a substantially nonporous electrically conductive filler, wherein the filler substantially surrounds the superconductor joint.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 11, 2012
    Assignee: American Superconductor Corporation
    Inventors: Alexander Otto, Eric R. Podtburg
  • Patent number: 8238990
    Abstract: A superconducting joint that structurally binds a first superconducting segment to a second superconducting segment. The first and second superconducting segment each include corresponding areas containing a granular superconducting substance formed by a first element and a second element. The superconducting joint includes a solid non-superconducting binding formed from a source of the first element and a source of the second element combined to produce the granular superconducting substance around the solid non-superconducting binding to permit for the flow of superconducting current through the first superconducting segment and the second superconducting segment.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: August 7, 2012
    Assignee: ASG Superconductors, S.p.A.
    Inventor: Davide Nardelli
  • Patent number: 8229528
    Abstract: A superconducting coil comprises a plurality of windings. Each winding comprises at least one superconducting segment having an exposed area containing a granular superconducting substance. A junction electrically connects at least one superconducting segment of one winding to at least one superconducting segment of another winding. The junction is formed by coupling the granular superconducting substance of the exposed area of the at least one superconducting segment of the one winding to the granular superconducting substance of the exposed area of the at least one superconducting segment of the other winding. In an embodiment, the exposed areas are positioned to face each other.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: July 24, 2012
    Assignee: ASG Superconductors, S.p.A.
    Inventors: Davide Nardelli, Roberto Marabotto, Adamo Laurenti
  • Publication number: 20120184446
    Abstract: A process produces a connecting structure between two superconductors, in particular magnesium diboride superconductors embodied as a superconducting core wire surrounded by normally conducting metal. A substance which reduces the melting point of magnesium is admixed to a substance mixture including magnesium and boron, and the exposed ends of the core wires are brought into contact with the substance mixture, which is caused to react in situ at a reaction temperature corresponding to the lower melting point to give magnesium diboride.
    Type: Application
    Filed: September 29, 2010
    Publication date: July 19, 2012
    Applicant: Siemens Aktiengesellschaft
    Inventors: Antje Drechsler, Wilfried Goldacker, Marijn Pieter Oomen, Jacob Johan Rabbers, Sonja Schlachter
  • Patent number: 8211833
    Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 3, 2012
    Assignee: Ambature, LLC
    Inventors: Douglas J. Gilbert, Timothy S. Cale
  • Patent number: 8204564
    Abstract: High-temperature superconductivity confined to nanometer-scale interfaces has been a long standing goal because of potential applications in electronic devices. The spontaneous formation of a superconducting interface in bilayers consisting of an insulator (La2CuO4) and a metal (La1?xSrxCuO4), neither of which is superconducting per se, is described. Depending upon the layering sequence of the bilayers, Tc may be either ˜15 K or ˜30 K. This highly robust phenomenon is confined to within 2-3 nm around the interface. After exposing the bilayer to ozone, Tc exceeds 50 K and this enhanced superconductivity is also shown to originate from a 1 to 2 unit cell thick interfacial layer. The results demonstrate that engineering artificial heterostructures provides a novel, unconventional way to fabricate stable, quasi two-dimensional high Tc phases and to significantly enhance superconducting properties in other superconductors.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: June 19, 2012
    Assignee: Brookhaven Science Associates, LLC
    Inventors: Ivan Bozovic, Gennady Logvenov, Adrian Mihai Gozar
  • Patent number: 8195260
    Abstract: A two-sided joint for splicing two laminated wires together, while preserving the mechanical integrity of the wire is disclosed. The two-sided joint can splice two laminated HTS wires having tapered ends and includes a bottom strap and a top strap. Under one aspect, a laminated, spliced superconductor wire includes a superconductor joint, which includes first and second superconductor wires, each wire including a laminate layer, a substrate layer overlaying the laminate layer, a buffer layer overlaying the substrate layer, a superconductor layer overlaying the buffer layer, a gap layer overlaying the superconductor layer, and a laminate layer overlaying the gap layer, a first HTS strap in electrical connection with the second laminate layer of the first laminate wire and the second laminate layer of the second laminate wire, and a backing strap proximate to the first laminate layer.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: June 5, 2012
    Assignee: American Superconductor Corporation
    Inventors: Alexander Otto, Peter D. Antaya, John P. Voccio, Henry C. Valcour
  • Publication number: 20120115733
    Abstract: This invention relates to a superconductor device, comprising: a superconductor; a former which supports the superconductor; and, an intermediate electrical connector attached to the former for coupling the superconductor to a power source, wherein the intermediate electrical connector is connected to the superconductor via a deformable portion in the intermediate electrical connector, wherein the deformable portion allows relative movement between the superconductor and former.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 10, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Stephen M. HUSBAND, Alexander C. SMITH, Nigel SCHOFIELD, Andrew OLIVER
  • Patent number: 8150486
    Abstract: The device has a quenchable superconductor (1), a first metallic member (2) electrically coupled with the quenchable superconductor (1), a second metallic member (3) electrically coupled to the first metallic member (2). The first metallic member (2) is thermally and electrically coupled with the quenchable superconductor (1) due to their direct surface contact. The superconducting device has a second metallic member (3) with a resistive element (4) and an electrical coupling (5) with the first metallic member (2). The resistive element (4) of the second metallic member (3) is thermally decoupled from the first metallic member (2). The first metallic member (2) has a substantially higher electrical resistance compared to the second metallic member (3).
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: April 3, 2012
    Assignee: Bruker HTS GmbH
    Inventor: Alexander Usoskin
  • Publication number: 20120021915
    Abstract: There is provided a superconducting joint for electrically connecting a first multifilamentary superconducting wire including a plurality of first superconducting filaments embedded in a first stabilizer matrix and a second multifilamentary superconducting wire including a plurality of second superconducting filaments embedded in a second stabilizer matrix.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 26, 2012
    Inventors: Motomune KODAMA, Tsuyoshi Wakuda
  • Publication number: 20110301039
    Abstract: Preparation and deposition of supercooled, electron-doped, water-cluster clathrate nanoparticles in confined geometries and on substrates from proprietary nanoemulsions is described. The compositions can yield high-Tc superconductors, e.g., in the vicinity of ?43 deg C., useful for SQUID devices in electronic and magnetic application. In certain embodiments, the water-cluster clathrates are formed in nanoemulsions.
    Type: Application
    Filed: December 29, 2009
    Publication date: December 8, 2011
    Applicant: HYDROELECTRON VENTURES, INC.
    Inventors: Keith Johnson, Matthew Price-Gallagher
  • Publication number: 20110281734
    Abstract: Disclosed is a three layer process for making contact points to a high transition temperature superconductor (HTSC), particularly to (Bi,Pb)2 Sr2 Ca2 CU3019+x with and without silver in the superconductor. The contact structure is a three layer configuration with a perforated silver foil (3) sandwiched between two metal spray gun deposited silver layers (2,5) and subsequent heat treatment in air. The contact has been made on tubes and rods (1). The silver contacts are capable of carrying a continuous current of 200 Amps without adding any substantial heat load to the cryogen used to cool the HTSC. The contact resistance at 4.2K is in the range of 1.5×10(hoch?8) to 8.5? 10(hoch?8)OHM in zero applied filed.
    Type: Application
    Filed: July 23, 2010
    Publication date: November 17, 2011
    Inventors: Shrikant EKBOTE, Gursharan Kaur PADAM, Narendra Kumar ARORA, Mukul SHARMA, Ramesh SETHI, Mrinal Kanti BANERJEE
  • Patent number: 8044752
    Abstract: High-current, compact, flexible conductors containing high temperature superconducting (HTS) tapes and methods for making the same are described. The HTS tapes are arranged into a stack, a plurality of stacks are arranged to form a superstructure, and the superstructure is twisted about the cable axis to obtain a HTS cable. The HTS cables of the invention can be utilized in numerous applications such as cables employed to generate magnetic fields for degaussing and high current electric power transmission or distribution applications.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: October 25, 2011
    Assignee: American Superconductor Corporation
    Inventors: Alexander Otto, Ralph P. Mason, James F. Maguire, Jie Yuan