With Cooling Means Patents (Class 335/300)
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Patent number: 12002620Abstract: The present disclosure relates to a bed-integrated electromagnetic field apparatus for controlling movement of a microrobot, and a method for driving a microrobot by using the same. A bed-integrated electromagnetic field apparatus according to the present disclosure can accurately control the movement of a medical device that can be inserted into a human body, such as a microrobot, and enables reduction of the size of the apparatus so as to be used in a medical procedure for diagnosis and treatment of vascular disease and the like.Type: GrantFiled: October 27, 2020Date of Patent: June 4, 2024Assignee: KOREA INSTITUTE OF MEDICAL MICROROBOTICSInventors: Jayoung Kim, Jong Oh Park
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Patent number: 11213891Abstract: Provided herein are approaches for forming a conduit embedded within a component of a semiconductor manufacturing device (e.g., an ion implanter) using an additive manufacturing process (e.g., 3-D printing), wherein the conduit is configured to deliver a fluid throughout the component to provide heating, cooling, and gas distribution thereof. In one approach, the conduit includes a set of raised surface features formed on an inner surface of the conduit for varying fluid flow characteristics within the conduit. In another approach, the conduit may be formed in a helical configuration. In another approach, the conduit is formed with a polygonal cross section. In another approach, the component of the ion implanter includes at least one of an ion source, a plasma flood gun, a cooling plate, a platen, and/or an arc chamber base.Type: GrantFiled: August 14, 2019Date of Patent: January 4, 2022Assignee: Varian Semiconductor Equipment Associates, Inc.Inventors: Joshua M. Abeshaus, Jordan B. Tye
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Patent number: 9669237Abstract: In a combined MRI and radiation therapy system, a magnet structure and radiation therapy equipment are provided. The magnet structure comprises a single substantially cylindrical field coil structure comprising a number of superconducting coils joined by a support structure and extending axially of a central region. An outer vacuum chamber encloses the field coil structure in an evacuated volume. A cooling arrangement comprising cooling tubes is in thermal contact with the superconducting coils and receives a cryogen flowing through the cooling tubes. The radiation therapy equipment comprises a gamma radiation source rotatable about an axis of the field coil structure to direct a radiation beam substantially radially through the field coil structure.Type: GrantFiled: March 8, 2012Date of Patent: June 6, 2017Assignee: Siemens PLCInventor: Simon James Calvert
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Publication number: 20150137921Abstract: A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method provides a first insulative layer tubular in shape and including a surface along which a conductor segment may be positioned. A channel formed in the surface of the insulative layer defines a first conductor path and includes a surface of first contour in cross section along a first plane transverse to the conductor path. A segment of conductor having a surface of second contour in cross section is positioned at least partly in the channel and extends along the conductor path. Along the first plane, contact between the conductor surface of second contour and the channel surface of first contour includes at least two separate regions of contact.Type: ApplicationFiled: November 26, 2014Publication date: May 21, 2015Inventors: Gerald Stelzer, Rainer Meinke, Mark Senti
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Patent number: 8952773Abstract: A device for the creation of propulsive force comprising a magnet, such as a permanent magnet or a superconductive solenoid, fixedly mounted at the narrow end of a converging nozzle made of a superconductor, such as a type II superconductor, e.g. like the rare earth Ba—Cu—O superconductors Sm—Ba—Cu—O or Y—Ba—Cu—O. The magnetic field generated by the interaction of the magnet with the superconducting nozzle due to Meissner effect, acts in the form of pressure on nozzle thereby producing a propulsive force directed toward the nozzle's converging end. The propulsive force being developed may be used for propelling or actuating any machine or vehicle, as well as in the production of energy.Type: GrantFiled: November 14, 2011Date of Patent: February 10, 2015Inventor: Athanassios A. Nassikas
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Patent number: 8917153Abstract: A supported pot magnet has a magnet coil and a coil former, with the coil former being made of a non-metallic material having a thermal contraction coefficient the same as that of the magnet coil. The supported pot magnet also has a cooling circulator composed of two identical separate components with a semi-cylindrical shape, each having multiple cooling tubes, a refrigerant inlet tube, a refrigerant outlet tube, and multiple clamps. The cooling tubes have a semicircular shape and mate with the slots, and are provided thereon with heat conducting members that are vertically disposed at an inner side of the cooling tubes. The refrigerant inlet tube and outlet tube are vertically mounted at two ends of the cooling tubes, in communication with the cooling tubes. The clamps are disposed on the refrigerant inlet tube and outlet tube.Type: GrantFiled: May 30, 2013Date of Patent: December 23, 2014Assignees: Siemens Aktiengesellschaft, Siemens Shenzhen Magnetic Resonance Ltd.Inventors: Lei Yang, Bu Qing Zhang
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Patent number: 8875521Abstract: A device for cooling components, comprising a housing in which a cavity is formed, in which a phase-change material is accommodated, the housing having at least one surface, which is able to be brought into contact with the component to be cooled, and at least one heat-dissipating surface. The cavity accommodating the phase-change material is enclosed by at least one coil, and the phase-change material includes ferromagnetic or magnetizable particles. Furthermore a method for cooling a component using the device is described.Type: GrantFiled: June 10, 2009Date of Patent: November 4, 2014Assignee: Robert Bosch GmbHInventors: Reinhold Danner, Andre Lischeck, Udo Schulz, Thomas Proepper, Heinrich Barth
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Patent number: 8830020Abstract: An actuator includes a coil; a cooling body configured to cool the coil; a quantity of heat transfer material fixedly arranged between the cooling body and the coil, and a mechanical attacher configured to attach the coil to the cooling body.Type: GrantFiled: September 13, 2010Date of Patent: September 9, 2014Assignee: ASML Netherlands B.V.Inventors: Rody Koops, Petrus Mathijs Henricus Vosters, Franciscus Stadhouders
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Patent number: 8506468Abstract: A ferrofluid chamber has a housing that is adapted to be coupled to a component that generates a magnetic field of sufficient strength to stimulate anatomical tissue. In addition, a ferrofluid is disposed within the housing for cooling the component.Type: GrantFiled: May 27, 2008Date of Patent: August 13, 2013Assignee: Neuronetics, Inc.Inventors: Kenneth Ghiron, Mark Edward Riehl
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Publication number: 20130181796Abstract: A transformer winding, having at least two multi-layered winding modules, which are connected electrically in series, extend about a common winding axis, and are nested one inside the other hollow-cylindrically, at least one cooling channel, which is arranged along the common winding axis hollow-cylindrically between the winding modules, and a flat electrical shield is provided within the at least one cooling channel at least sectionally along the radial circumference thereof, wherein the electrical shield extends over approximately the entire axial length and through which electrical shield the electrical capacitance distribution in the transformer winding connected electrically in series is influenced.Type: ApplicationFiled: March 5, 2013Publication date: July 18, 2013Applicant: ABB Technology AGInventor: ABB Technology AG
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Patent number: 8487730Abstract: A magnetic field generating device includes a housing and a cryogenically coolable superconducting magnetic coil that is accommodated in the housing. The housing includes a deep-drilled hole, through which coolant flows.Type: GrantFiled: May 14, 2010Date of Patent: July 16, 2013Assignee: Siemens AktiengesellschaftInventors: Robert Hahn, Andreas Ziegler
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Patent number: 8471661Abstract: A coil includes electrically conductive winding wire wound in turns around a core in one or more layers. The surface of the winding wire is provided with at least one groove in the direction of the longitudinal axis of the winding wire, and at least one cooling tube which enables coolant circulation is positioned in the groove of the winding wire, being at least partly embedded therein. The groove is formed on the surface of the winding wire of an outermost winding wire layer relative to the core and opens away from the core The cooling tube in the groove is placed around the outermost winding wire layer and covers the outermost winding wire layer at least partly.Type: GrantFiled: May 28, 2010Date of Patent: June 25, 2013Assignee: ABB OyInventors: Pertti Sevakivi, Markku Talja
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Patent number: 8471660Abstract: A superconducting magnetizer assembly includes a coil pack including an inner coil configured to generate a first magnetic field in response to an electric current supplied to the inner coil, an outer coil being disposed about the inner coil and configured to generate a second magnetic field in response to an electric current supplied to the outer coil, a non-conductive end spacer disposed between an end winding of the inner coil and an end winding of the outer coil, and a container to house the inner and outer coils; and a yoke disposed proximate the coil pack being configured to constrain the first and second magnetic fields to reduce the strength of the first field at the end winding of the inner coil, wherein the yoke comprises an annular ring configured to at least partially envelop the coil pack.Type: GrantFiled: December 5, 2012Date of Patent: June 25, 2013Assignee: General Electric CompanyInventors: James Humphrie Rochford, Kiruba Sivasubramaniam Haran, Ernst Wolfgang Stautner
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Patent number: 8468684Abstract: A magnetizing coil unit and a method of making a magnetizing coil unit is provided. The coil includes a solenoid coil having a coiled copper sheet in which the width of the copper sheet is equal to the height of the solenoid coil. A magnetizing assembly includes a plurality of magnetizing coil units.Type: GrantFiled: November 20, 2006Date of Patent: June 25, 2013Assignee: General Electric CompanyInventors: Evangelos Trifon Laskaris, Paul Shadforth Thompson, Liang Li, Kathleen Melanie Amm, Bulent Aksel, Michael Anthony Palmo, Jr.
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Patent number: 8362863Abstract: The present disclosure is generally directed towards magnetization of permanent magnets using superconducting magnetizers. For example, in one embodiment, a superconducting magnetizer assembly is provided. The assembly includes a coil pack having an inner coil including a first superconducting magnet material, the coil being configured to generate a first magnetic field in response to an electric current supplied to the coil, and an outer coil including a second superconducting magnet material, the outer coil being disposed about the inner coil and being configured to generate a second magnetic field in response to an electric current supplied to the outer coil. The coil pack also includes a container configured to house the inner and the outer coils.Type: GrantFiled: January 14, 2011Date of Patent: January 29, 2013Assignee: General Electric CompanyInventors: James Humphrie Rochford, Kiruba Sivasubramaniam Haran, Ernst Wolfgang Stautner
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Patent number: 8354908Abstract: The present invention provides a cylindrical magnetic levitation stage which includes a cylindrical substrate used to form micro-patterns of various arbitrary shapes on a large-area semiconductor substrate or display panel substrate, a cylindrical substrate, a combination of a first permanent magnet array and a first coil array and a combination of a first permanent magnet array and a first coil array, which are coupled to the cylindrical substrate, so that levitation, axial translation and rotation of the cylindrical substrate can be made finely through the control of a magnetic force generated by the interaction between a magnetic field generated by electric current applied to the coil arrays and a magnetic field generated from the permanent magnet arrays corresponding to the coil arrays.Type: GrantFiled: September 29, 2008Date of Patent: January 15, 2013Assignee: Korea Electrotechnology Research InstituteInventors: Jeong Woo Jeon, Hyun Seok Oh, Sung Il Chung, Yeon Ho Jeong, Do Hyun Kang, S. A. Nikiforov, Mitica Caraiani
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Patent number: 8313422Abstract: Some embodiments provide a system for external manipulation of magnetic nanoparticles in vasculature using a remotely placed magnetic field-generating stator. In one aspect, the systems and methods relate to the control of magnetic nanoparticles in a fluid medium using permanent magnet-based or electromagnetic field-generating stator sources. Such a system can be useful for increasing the diffusion of therapeutic agents in a fluid medium, such as a human circulatory system, which can result in substantial clearance of fluid obstructions, such as vascular occlusions, in a circulatory system resulting in increased blood flow.Type: GrantFiled: May 15, 2012Date of Patent: November 20, 2012Assignee: Pulse Therapeutics, Inc.Inventor: Francis M. Creighton
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Patent number: 8308628Abstract: Some embodiments provide a system for external manipulation of magnetic nanoparticles in vasculature using a remotely placed magnetic field-generating stator. In one aspect, the systems and methods relate to the control of magnetic nanoparticles in a fluid medium using permanent magnet-based or electromagnetic field-generating stator sources. Such a system can be useful for increasing the diffusion of therapeutic agents in a fluid medium, such as a human circulatory system, which can result in substantial clearance of fluid obstructions, such as vascular occlusions, in a circulatory system resulting in increased blood flow.Type: GrantFiled: May 15, 2012Date of Patent: November 13, 2012Assignee: Pulse Therapeutics, Inc.Inventor: Francis M. Creighton
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Patent number: 8269587Abstract: A superconducting coil is accommodated in a vacuum chamber. A radiation shield is arranged in the vacuum chamber with a prescribed space from the vacuum chamber to surround a periphery of the superconducting coil. A refrigerator cools the superconducting coil and the radiation shield by conduction. A provided member at least partly lies between the vacuum chamber and the radiation shield, through which heat is conducted from the vacuum chamber to the radiation shield. A cooling pipe has opposite end portions drawn out of the vacuum chamber and an intermediate portion in contact with the superconducting coil, the radiation shield, and the provided member. The provided member dissipates heat into a coolant flowing through the cooling pipe, to reduce the heat conducted to the radiation shield.Type: GrantFiled: November 29, 2010Date of Patent: September 18, 2012Assignee: Mitsubishi Electric CorporationInventors: Tatsuya Inoue, Shoichi Yokoyama
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Patent number: 8258903Abstract: A superconducting, actively shielded magnet has a first and second superconducting coil modules that generate a homogeneous magnetic field in a first direction in an operating volume of the magnet and that reduces the scatter magnetic field in an environment of the magnet. A third superconducting coil module is arranged in proximity to the first and second coil modules. The third coil module is fashioned to generate a compensation gradient field given occurrence of an interference gradient field in the environment so that the effect of the interference gradient field in the operating volume is reduced.Type: GrantFiled: January 15, 2010Date of Patent: September 4, 2012Assignee: Siemens AktiengesellschaftInventor: Guenter Schnur
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Patent number: 8228148Abstract: A persistent-mode magnet, assembled from superconducting annuli, provides a micro coil NMR, in which compactness and manufacturability are provided for a variety of applications. An annular magnet for micro NMR can include a YBCO-annulus Helmholtz coil, for example, that can energized by a magnet system and then transported for use at a second location with an operating system.Type: GrantFiled: December 22, 2010Date of Patent: July 24, 2012Assignees: Massachusetts Institute Of Technology, Railway Technical Research InstituteInventors: Yukikazu Iwasa, Masaru Tomita
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Patent number: 8164402Abstract: A current transformer adapted for use in an electrical circuit. The current transformer includes a toroidal core and at least one electrical conductor having a portion passing within the toroidal core. The current transformer includes a cooling device having a body made of thermal conducting material and configured so that it has a first portion connected to the electrical conductor at a position upstream from the toroidal core and suitable for absorbing heat from the electrical conductor, and a second portion, spaced apart from the first portion, which is connected to the electrical conductor at a position downstream from the toroidal core and is suitable for transmitting heat to the electrical conductor. The thermal conducting body comprises at least one portion made of an electrically insulating material capable of preventing the current flow through the cooling device itself.Type: GrantFiled: May 27, 2010Date of Patent: April 24, 2012Assignee: ABB S.p.A.Inventors: Alessio Bergamini, Federico Gamba
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Patent number: 8151443Abstract: A method of producing a former for winding a magnet coil, which former has a pattern of recess-defining ridges that define at least one recess into which wire may be wound to form a magnet coil. The method includes the steps of: producing an accurately machined tool bearing protrusions conforming to an inverse of said pattern of recess-defining ridges; producing said former by molding material against said accurately machined tool; and separating the former from the accurately machined tool. The invention also provides a method of producing a magnet coil employing the former so produced.Type: GrantFiled: July 16, 2008Date of Patent: April 10, 2012Assignee: Siemens PlcInventors: Matthew Hobbs, Edgar Charles Malcolm Rayner
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Patent number: 8134434Abstract: A magnet system for generating a magnetic field may include a superconducting magnet, a switch, and a heater element thermally coupled to the switch. The superconducting magnet is structured to generate magnetic fields, and the switch includes a non-inductive superconducting current carrying path connected in parallel to the superconducting magnet. In general, the switch is structured to only carry a level of current that is a portion of the current required to obtain a full field by the superconducting magnet.Type: GrantFiled: July 7, 2008Date of Patent: March 13, 2012Assignee: Quantum Design, Inc.Inventors: Jost Diederichs, Andreas Amann, Michael B. Simmonds
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Patent number: 8111125Abstract: A Nb3Sn superconducting coil can be formed from a wire including multiple unreacted strands comprising tin in contact with niobium. The strands are wound into a cable, which is then heated to react the tin and niobium to form a cable comprising reacted Nb3Sn strands. The cable comprising the reacted Nb3Sn strands are then mounted in and soldered into an electrically conductive channel to form a reacted cable-in-channel of Nb3Sn strands. The cable-in-channel of reacted Nb3Sn strands are then wound to fabricate a superconducting coil. The Nb3Sn superconducting coil can be used, for example, in a magnet structure for particle acceleration. In one example, the superconducting coil is used in a high-field superconducting synchrocyclotron.Type: GrantFiled: February 24, 2011Date of Patent: February 7, 2012Assignee: Massachusetts Institute of TechnologyInventors: Timothy A. Antaya, Joel Henry Schultz
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Patent number: 8058764Abstract: A winding former with a winding support between a first plate and a second plate for a saddle coil winding made up from a thin layer HTSC, which is destined for a cylindrical armature of an electrical machine, and which has two longitudinal legs parallel to the armature axis between two winding ends, wherein the winding support for each winding end has a bearing surface, which enables the thin layer HTSC to be wound to form a saddle coil without damaging the HTSC thin layer.Type: GrantFiled: August 22, 2008Date of Patent: November 15, 2011Assignee: Zenergy Power GmbHInventor: Jan Wiezoreck
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Publication number: 20110160064Abstract: A cryogenic system includes a superconducting magnet (20) in a reservoir of liquid helium (LH). Helium vapor (VH) rises and contacts a recondenser surface (50, 50?, 50?) on which the helium vapor (VH) condenses into liquid helium and flows by gravity off a lower edge of the recondenser surface. A plurality of fins (52) extend from the recondenser surface or a plurality of grooves (52?, 52?) are cut into the recondenser surface to disrupt the film thickness and to provide a path by which droplets of the liquid helium leave the recondenser surface without travelling a full vertical length of the recondenser (30).Type: ApplicationFiled: August 27, 2009Publication date: June 30, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Glen G. Pfleiderer, Robert A. Ackermann
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Publication number: 20110128105Abstract: A coil includes electrically conductive winding wire wound in turns around a core in one or more layers. The surface of the winding wire is provided with at least one groove in the direction of the longitudinal axis of the winding wire, and at least one cooling tube which enables coolant circulation is positioned in the groove of the winding wire, being at least partly embedded therein. The groove is formed on the surface of the winding wire of an outermost winding wire layer relative to the core and opens away from the core The cooling tube in the groove is placed around the outermost winding wire layer and covers the outermost winding wire layer at least partly.Type: ApplicationFiled: May 28, 2010Publication date: June 2, 2011Applicant: ABB OyInventors: Pertti SEVAKIVI, Markku Talja
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Patent number: 7859374Abstract: A persistent-mode magnet, assembled from superconducting annuli, provides a micro coil NMR, in which compactness and manufacturability are provided for a variety of applications. An annular magnet for micro NMR can include a YBCO-annulus Helmholtz coil, for example, that can energized by a magnet system and then transported for use at a second location with an operating system.Type: GrantFiled: October 3, 2006Date of Patent: December 28, 2010Assignees: Massachusetts Institute of Technology, Railway Technical Research InstituteInventors: Yukikazu Iwasa, Masaru Tomita
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Patent number: 7859375Abstract: An electromagnet comprising a plurality of coils of superconductive material, monolithically embedded in an embedding material, which is solid at the temperature of operation of the superconductive electromagnet, and a method for producing an electromagnet comprising a plurality of coils of superconductive material, comprising the steps of winding coils of superconductive material, retaining the coils at predetermined relative positions, and monolithically embedding the plurality of superconducting coils in an embedding material, which is solid at the temperature of operation of the superconductive electromagnet.Type: GrantFiled: April 1, 2008Date of Patent: December 28, 2010Assignee: Siemens PlcInventors: Andrew Farquhar Atkins, Graham Gilgrass, Andrew James Gray
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Patent number: 7852629Abstract: A suspension device mounts a superconducting magnet heat shield enclosure that encompasses a low-temperature container, that encompasses a superconducting magnet and holds coolant for cooling the superconducting magnet. The low-temperature container has an outer heat shield layer and an inner heat shield layer. A vacuum jacket encompasses the heat shield enclosure and has an outer vacuum shell and an inner vacuum shell. A first set of suspension parts connects the outer vacuum shell with the low-temperature container, and a second set of suspension parts connects the outer heat shield shell with the low-temperature container. Since the second set of suspension parts connect the heat shield enclosure directly with the low-temperature container, this reduces the relative movement between the two parts, thus alleviating the streaking phenomenon in a magnetic resonance image, if the superconducting magnet is part of a magnetic resonance imaging system.Type: GrantFiled: February 27, 2009Date of Patent: December 14, 2010Assignee: Siemens AktiengesellschaftInventor: Xing En Yu
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Patent number: 7764153Abstract: A magnetic field generator comprises a superconducting bulk body, which generates a superconducting magnetic field, a refrigerant vessel for storing solid nitrogen, a vacuum container, which accommodates therein the superconducting bulk body and the refrigerant vessel, and a refrigerator having a cooling head for cooling the refrigerant vessel. The superconducting bulk body is arranged along a wall of the vacuum container. The cooling head of the refrigerator and the refrigerant vessel are in thermal contact with each other. The refrigerant vessel and the superconducting bulk body are in thermal contact with each other.Type: GrantFiled: January 23, 2008Date of Patent: July 27, 2010Assignee: Hitachi, Ltd.Inventors: Hisashi Isogami, Norihide Saho, Hiroyuki Tanaka
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Patent number: 7675395Abstract: An electromagnet and associated apparatus and method are provided. The electromagnet includes a core and at least one winding disposed circumferentially about the core such that the winding extends at least one revolution around the core. The electromagnet further includes at least one spacer having channels defined therein and disposed circumferentially about the core and adjacent to the at least one winding. The channels facilitate cooling by directing fluid about the windings of the coil as fluid is introduced into the electromagnet.Type: GrantFiled: June 16, 2006Date of Patent: March 9, 2010Assignee: The Boeing CompanyInventors: Arthur C. Day, Philip E. Johnson, B. David Stanley
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Patent number: 7667562Abstract: A new class of fundamental devices and methods for their manufacture and use. The bulk magnetic field replicators of the present invention require no precision machining or alignment to accurately reproduce magnetic fields of any complexity, nor extreme positional stability to maintain superconductivity. Such bulk devices may be formed of either low or high critical temperature superconductive materials, but are particularly adapted to formation from high critical temperature materials.Type: GrantFiled: February 20, 1990Date of Patent: February 23, 2010Inventor: Roy Weinstein
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Publication number: 20100013584Abstract: A method and apparatus for actively controlling quench protection of a superconducting magnet includes a magnetic resonance imaging (MRI) system and a computer readable storage medium having stored thereon a computer program comprising instructions which when executed by a computer cause the computer to detect a quench condition of the superconducting magnet. The instructions also cause the computer to actively control a quench protection system of the superconducting magnet in response to the detected quench condition.Type: ApplicationFiled: September 28, 2009Publication date: January 21, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Xianrui Huang, Minfeng Xu
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Patent number: 7646272Abstract: A freely oriented portable superconducting magnet is disclosed. Coolant is supplied to the superconducting magnet from a repository separate from the magnet, enabling portability of the magnet. A plurality of support assemblies structurally anchor and thermally isolate the magnet within a thermal shield. A plurality of support assemblies structurally anchor and thermally isolate the thermal shield within a vacuum vessel. The support assemblies restrain movement of the magnet resulting from energizing and cooldown, as well as from changes in orientation, enabling the magnet to be freely orientable.Type: GrantFiled: October 12, 2007Date of Patent: January 12, 2010Assignee: The United States of America as represented by the United States Department of EnergyInventors: Eric N. Schmierer, F. Coyne Prenger, Dallas D. Hill
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Patent number: 7616083Abstract: A resin-impregnated superconducting magnet coil comprising a number of turns of superconducting wire (14) embedded within a resin (16) having an outer filler layer (18) composed of the resin, filled with filler material (20). The coil further comprises a cooling layer (22) interposed between the superconducting wire (14) and the filler layer (18).Type: GrantFiled: November 13, 2006Date of Patent: November 10, 2009Assignee: Siemens Magnet Technology Ltd.Inventor: Graham Gilgrass
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Patent number: 7609139Abstract: An electromagnet having at least one access port oriented perpendicularly to the electromagnet's central axis. The magnet has a conventional helical winding along its central axis. However, at some point along the length of the axis, the pitch of the helical winding is greatly increased in order to create a region with a comparatively low turn density. One or more ports are provided in this region. These ports provide access from the magnet's central bore to the magnet's exterior. A sample can be placed in the central bore near the ports. A beam traveling down the central bore, or through one of the radial ports, will strike the sample and be scattered in all directions. The ports allow access for instrumentation which is used to evaluate the scattered beam.Type: GrantFiled: March 9, 2007Date of Patent: October 27, 2009Assignee: Florida State University Research FoundationInventors: Mark D. Bird, Scott T. Bole, Scott R. Gundlach, Jack Toth
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Publication number: 20090251257Abstract: A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method provides a first insulative layer tubular in shape and including a surface along which a conductor segment may be positioned. A channel formed in the surface of the insulative layer defines a first conductor path and includes a surface of first contour in cross section along a first plane transverse to the conductor path. A segment of conductor having a surface of second contour in cross section is positioned at least partly in the channel and extends along the conductor path. Along the first plane, contact between the conductor surface of second contour and the channel surface of first contour includes at least two separate regions of contact.Type: ApplicationFiled: April 3, 2008Publication date: October 8, 2009Inventors: Gerald Stelzer, Rainer Meinke, Mark Senti
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Patent number: 7583171Abstract: The present invention efficiently radiates heat generated by a coil while suppressing a decrease in the efficiency of generation of magnetic fields caused by an eddy current. The present invention includes a coil extending spirally in a plane and covered with a dielectric material, a magnetic substance provided parallel with the plane so as to overlap the coil, and a radiator extending in the plane so as to surround the coil and having projecting portions which project toward an outermost periphery of the coil and groove portions recessed in a direction opposite to that in which the projecting portions project, the projecting portions and the groove portions being alternately arranged, the radiator having a higher thermal conductivity than the magnetic substance.Type: GrantFiled: March 16, 2005Date of Patent: September 1, 2009Assignee: Fujitsu LimitedInventors: Tsuyoshi Matsumoto, Tohru Fujimaki, Hiroyasu Yoshikawa
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Patent number: 7557577Abstract: The invention relates to the use of a water-soluble paramagnetic substance, in particular a magnetic resonance contrast medium, to reduce the magnetic resonance relaxation time of a coolant for magnetic resonance systems. Furthermore the invention relates to a corresponding method for reducing the magnetic resonance relaxation time of a coolant.Type: GrantFiled: December 8, 2004Date of Patent: July 7, 2009Assignee: Siemens AktiengesselschaftInventors: Norbert Gläsel, Ulrich Nerreter
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Patent number: 7545062Abstract: A device and system for removing heat from a magnetic device such as an electromagnet core section of a magnetic bearing internally by convection. The device includes a ribbon-type conductor portion and an insulator portion that are spirally and coaxially arranged on a coil. The insulating portion includes window portions that provide a fluid passage when the insulating portion is sandwiched between adjacent conductor portions. The device can be disposed in a plenum in the electromagnet core section and at least one opening in the core section, through which a cooling fluid can be introduced into the plenum, can be provided.Type: GrantFiled: May 26, 2006Date of Patent: June 9, 2009Assignee: Satcon Technology CorporationInventor: Jerry Foshage
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Publication number: 20090108969Abstract: An electromagnet coil comprising Litz wire windings and power leads without break or interruption is cooled by a perfluorinated liquid by sensible and phase change heat transfer in a closed system. The electromagnet coil may be housed in a pentagonal or hexagonal pressure vessel to allow high packing densities in an array or helmet configuration. The helmet is then lowered over a human cranium for transcranial electromagnetic stimulation. The Litz wire windings reduce the power and voltages required for operation, yet allow production of over 2 T of accurately directed magnetic pulses for direct nerve or neuron stimulation. The perfluorinated liquid maintains the temperature of the helmet to less than 35-40° C., ensuring a comfortable temperature device for a human test subject. A utility cable connects the helmet to an external cooling unit and an external power supply.Type: ApplicationFiled: October 31, 2007Publication date: April 30, 2009Applicant: LOS ALAMOS NATIONAL SECURITYInventors: James Rae Sims, Charles A. Swenson, Curtt N. Ammerman, Josef B. Schillig
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Patent number: 7525404Abstract: A vent assembly is provided for allowing internal contaminants to exit a solenoid. The vent assembly includes a vent membrane interposed between a gasket and a support. The support may have a variable diameter. The vent assembly attaches to the solenoid via a mating cover of the solenoid, which includes a vent opening that aligns with an opening in the gasket and includes a counter bore that captures the gasket. The vent assembly allows contaminants to exit the solenoid through a vent membrane. It also prevents contaminants from entering the solenoid around the vent membrane without the use of injection molding.Type: GrantFiled: August 19, 2004Date of Patent: April 28, 2009Assignee: Remy Inc.Inventors: Richard Larimore, James Gillett, Dong Ju Park
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Publication number: 20090033450Abstract: A low eddy current cryogen circuit for superconducting magnets including at least a first cooling coil made of an electrically conducting material and having at least one electrical isolator incorporated in the first cooling coil. The electrical isolator is located to inhibit induced eddy current loops due to inductive coupling of the first cooling coil with eddy current inducing field sources.Type: ApplicationFiled: October 7, 2008Publication date: February 5, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Xianrui Huang, Paul Shadforth Thompson, David Thomas Ryan, Gregory Alan Lehmann, Timothy John Havens
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Publication number: 20080224808Abstract: A ferrofluid chamber has a housing that is adapted to be coupled to a component that generates a magnetic field of sufficient strength to stimulate anatomical tissue. In addition, a ferrofluid is disposed within the housing for cooling the component.Type: ApplicationFiled: May 27, 2008Publication date: September 18, 2008Applicant: NEURONETICS, INC.Inventors: Kenneth Ghiron, Mark Edward Riehl
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Publication number: 20080141939Abstract: A electromagnet array structure including multiple electromagnetic coils captured in a rigid encapsulant, for example, of cured epoxy resin, to form a unitary free-standing structure which can be placed around the walls of a plasma processing chamber. A liquid cooling coil may also be captured in the encapsulant between the electromagnetic coils. The structure may additionally include water fittings, locating pins, through tubes for chamber bolts, and lifting brackets.Type: ApplicationFiled: December 13, 2006Publication date: June 19, 2008Applicant: Applied Materials, IncInventors: Andrew Gillard, Anthony Vesci, Keith A. Miller
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Patent number: 7305845Abstract: A system and method for de-icing a recondensor includes at least one heating element configured to melt iced particles from a recondensing system. A power delivery circuit is included configured to deliver power to the at least one resistive heating element such that the at least one resistive heating element delivers a supply of heat sufficient to melt the iced particles from the recondensing system.Type: GrantFiled: March 5, 2004Date of Patent: December 11, 2007Assignee: General Electric CompanyInventors: Roy A. Mangano, In-Hua Xu, Gregory A. Lehmann, Deborah R. Mantone
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Publication number: 20070273230Abstract: A device and system for removing heat from a magnetic device such as an electromagnet core section of a magnetic bearing internally by convection. The device includes a ribbon-type conductor portion and an insulator portion that are spirally and. coaxially arranged on a coil. The insulating portion includes window portions that provide a fluid passage when the insulating portion is sandwiched between adjacent conductor portions. The device can be disposed in a plenum in the electromagnet core section and at least one opening in the core section, through which a cooling fluid can be introduced into the plenum, can be provided.Type: ApplicationFiled: May 26, 2006Publication date: November 29, 2007Inventor: Jerry Foshage
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Patent number: 7218195Abstract: A magnetizing coil unit and a method of making a magnetizing coil unit is provided. The coil includes a solenoid coil having a coiled copper sheet in which the width of the copper sheet is equal to the height of the solenoid coil. A magnetizing assembly includes a plurality of magnetizing coil units.Type: GrantFiled: October 1, 2003Date of Patent: May 15, 2007Assignee: General Electric CompanyInventors: Evangelos Trifon Laskaris, Paul Shadforth Thompson, Liang Li, Kathleen Melanie Amm, Bulent Aksel, Michael Anthony Palmo, Jr.