JP2005103266A5 - - Google Patents

Download PDF

Info

Publication number
JP2005103266A5
JP2005103266A5 JP2004280789A JP2004280789A JP2005103266A5 JP 2005103266 A5 JP2005103266 A5 JP 2005103266A5 JP 2004280789 A JP2004280789 A JP 2004280789A JP 2004280789 A JP2004280789 A JP 2004280789A JP 2005103266 A5 JP2005103266 A5 JP 2005103266A5
Authority
JP
Japan
Prior art keywords
permanent magnet
magnet body
assembly
fixed
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2004280789A
Other languages
English (en)
Japanese (ja)
Other versions
JP4630617B2 (ja
JP2005103266A (ja
Filing date
Publication date
Priority claimed from US10/672,720 external-priority patent/US7148689B2/en
Application filed filed Critical
Publication of JP2005103266A publication Critical patent/JP2005103266A/ja
Publication of JP2005103266A5 publication Critical patent/JP2005103266A5/ja
Application granted granted Critical
Publication of JP4630617B2 publication Critical patent/JP4630617B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP2004280789A 2003-09-29 2004-09-28 主磁場調整のための移動可能永久磁石本体を備えた永久磁石アセンブリ Expired - Fee Related JP4630617B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/672,720 US7148689B2 (en) 2003-09-29 2003-09-29 Permanent magnet assembly with movable permanent body for main magnetic field adjustable

Publications (3)

Publication Number Publication Date
JP2005103266A JP2005103266A (ja) 2005-04-21
JP2005103266A5 true JP2005103266A5 (https=) 2009-11-12
JP4630617B2 JP4630617B2 (ja) 2011-02-09

Family

ID=34376449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004280789A Expired - Fee Related JP4630617B2 (ja) 2003-09-29 2004-09-28 主磁場調整のための移動可能永久磁石本体を備えた永久磁石アセンブリ

Country Status (4)

Country Link
US (1) US7148689B2 (https=)
JP (1) JP4630617B2 (https=)
CN (1) CN1604240B (https=)
IT (1) ITMI20041729A1 (https=)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7423431B2 (en) * 2003-09-29 2008-09-09 General Electric Company Multiple ring polefaceless permanent magnet and method of making
GB2422905B (en) * 2005-02-04 2007-02-14 Siemens Magnet Technology Ltd Material for electrical isolation and vibro-acoustic performance
US7710081B2 (en) 2006-10-27 2010-05-04 Direct Drive Systems, Inc. Electromechanical energy conversion systems
US7759938B2 (en) * 2007-02-05 2010-07-20 Morpho Detection, Inc. Apparatus and method for varying magnetic field strength in magnetic resonance measurements
EP1962100A1 (en) * 2007-02-20 2008-08-27 Esaote S.p.A. Magnetic structure for MRI machines and MRI machine particularly for orthopedic or rheumatologic applications
WO2008109126A1 (en) * 2007-03-06 2008-09-12 Harvard University Otd (Office Of Technology Development) Permanent magnet system
DE102007014224A1 (de) 2007-03-24 2008-09-25 Abiomed Europe Gmbh Blutpumpe mit Mikromotor
JP5012572B2 (ja) * 2008-02-29 2012-08-29 富士通株式会社 マグネトロンスパッタ装置用磁石ユニット
US20110175694A1 (en) * 2008-06-24 2011-07-21 Fallone B Gino Magnetic assembly and method for defining a magnetic field for an imaging volume
US8253298B2 (en) * 2008-07-28 2012-08-28 Direct Drive Systems, Inc. Slot configuration of an electric machine
WO2010122551A1 (en) * 2009-04-21 2010-10-28 Aspect Magnet Technologies Ltd. Permanent magnet arrangement with solid facing plate and scanning magnet head
WO2011001429A1 (en) 2009-06-30 2011-01-06 Aspect Magnet Technologies Ltd. A cage in an mrd with a fastening/attenuating system
US8448110B2 (en) * 2009-11-24 2013-05-21 International Business Machines Corporation Method to reduce delay variation by sensitivity cancellation
CN104459584B (zh) * 2009-12-02 2018-03-20 纳纳利塞斯公司 用于产生均匀磁场的方法和装置
US10076266B2 (en) 2010-07-07 2018-09-18 Aspect Imaging Ltd. Devices and methods for a neonate incubator, capsule and cart
US11278461B2 (en) 2010-07-07 2022-03-22 Aspect Imaging Ltd. Devices and methods for a neonate incubator, capsule and cart
EP2939044A1 (en) * 2012-12-26 2015-11-04 Koninklijke Philips N.V. Accessible magnetic resonance imaging scanner system and method of operation thereof
EP3278342B1 (en) * 2015-04-01 2020-11-25 The Florida State University Research Foundation Inc. Iron-based superconducting permanent magnet and method of manufacture
CN107735628B (zh) 2015-06-19 2021-07-06 永磁电机有限公司 改进的填充屏型磁热元件
CN105390229B (zh) * 2015-12-10 2018-11-06 沈阳东软医疗系统有限公司 一种永磁磁体及用于核磁共振成像系统的磁体装置
US11287497B2 (en) 2016-08-08 2022-03-29 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US10224135B2 (en) 2016-08-08 2019-03-05 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US11988730B2 (en) 2016-08-08 2024-05-21 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US10847294B2 (en) 2017-07-10 2020-11-24 Aspect Imaging Ltd. System for generating a magnetic field
CN108375744B (zh) * 2018-03-21 2024-07-19 苏州佳祺仕软件技术有限公司 一种磁铁固定治具
US20210405137A1 (en) * 2018-11-29 2021-12-30 Epsitau Ltd. Lightweight asymmetric magnet arrays with mixed-phase magnet rings
US11204405B1 (en) 2019-07-22 2021-12-21 Andrew F. McDowell Dynamic stabilization of magnetic fields
US12374479B2 (en) * 2023-02-14 2025-07-29 Banner Engineering Corp. Magnetic mount assembly

Family Cites Families (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1509923A (en) * 1974-04-30 1978-05-04 Strathearn Audio Ltd Pivoted gramophone pick-up arm control arrangements
US3899762A (en) 1974-10-03 1975-08-12 Permag Magnetics Corp Permanent magnetic structure
US4496395A (en) 1981-06-16 1985-01-29 General Motors Corporation High coercivity rare earth-iron magnets
US4540453A (en) 1982-10-28 1985-09-10 At&T Technologies Magnetically soft ferritic Fe-Cr-Ni alloys
JPH03170643A (ja) 1983-08-04 1991-07-24 Sumitomo Special Metals Co Ltd 永久磁石用合金
JPS60166110U (ja) * 1984-04-11 1985-11-05 住友特殊金属株式会社 磁界発生装置
DE3566185D1 (en) 1984-04-11 1988-12-15 Sumitomo Spec Metals Magnetic field generating device for nmr-ct
JPS60239005A (ja) * 1984-05-11 1985-11-27 Sumitomo Special Metals Co Ltd 磁界発生装置
JPS61218120A (ja) * 1985-03-23 1986-09-27 Sumitomo Special Metals Co Ltd 磁界発生装置
US4667123A (en) 1985-11-20 1987-05-19 The Garrett Corporation Two pole permanent magnet rotor construction for toothless stator electrical machine
JPS62139304A (ja) * 1985-12-13 1987-06-23 Hitachi Metals Ltd 磁界均一性のよい磁気回路
US4679022A (en) 1985-12-27 1987-07-07 Sumitomo Special Metal Co. Ltd. Magnetic field generating device for NMR-CT
US4827235A (en) 1986-07-18 1989-05-02 Kabushiki Kaisha Toshiba Magnetic field generator useful for a magnetic resonance imaging instrument
EP0262880B1 (en) 1986-09-27 1992-06-10 Sumitomo Special Metals Co. Ltd. Magnetic field generating device for nmr-ct
US4931760A (en) 1986-10-08 1990-06-05 Asahi Kasei Kogyo Kabushiki Kaisha Uniform magnetic field generator
JPS63241905A (ja) 1987-03-27 1988-10-07 Sumitomo Special Metals Co Ltd 磁界発生装置
US5320103A (en) 1987-10-07 1994-06-14 Advanced Techtronics, Inc. Permanent magnet arrangement
US5063934A (en) 1987-10-07 1991-11-12 Advanced Techtronics, Inc. Permanent magnet arrangement
US4998976A (en) 1987-10-07 1991-03-12 Uri Rapoport Permanent magnet arrangement
US4953555A (en) 1987-10-20 1990-09-04 The United States Of Americas As Represented By The Secretary Of The Army Permanent magnet structure for a nuclear magnetic resonance imager for medical diagnostics
JPH02141501A (ja) 1988-11-22 1990-05-30 Tdk Corp 永久磁石用合金粉末
JPH03131234A (ja) 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
JPH0394732A (ja) * 1989-09-08 1991-04-19 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
JPH03180006A (ja) * 1989-12-08 1991-08-06 Seiko Epson Corp 磁界発生装置
GB9009579D0 (en) 1990-04-27 1990-06-20 Oxford Advanced Tech Magnetic field generating assembly
US5252924A (en) 1991-11-18 1993-10-12 Sumitomo Special Metals Co., Ltd. Magnetic field generating apparatus for MRI
JP2808198B2 (ja) 1990-07-02 1998-10-08 住友特殊金属株式会社 Ｍｒｉ用磁界発生装置とその製法
FR2665297B1 (fr) 1990-07-30 1992-10-09 Centre Nat Rech Scient Aimant permanent pour installation d'imagerie par resonance magnetique nucleaire.
SG43224A1 (en) 1990-09-29 1997-10-17 Sumitomo Spec Metals Magnetic field generating device used for MRI
JP2816256B2 (ja) 1991-03-25 1998-10-27 株式会社日立製作所 コイル体
JPH04371136A (ja) * 1991-06-19 1992-12-24 Hitachi Medical Corp Ｍｒｉ装置用静磁場発生装置
DE69131940T2 (de) 1991-11-15 2000-08-17 Hitachi Medical Corp., Tokio/Tokyo Apparat zur Erzeugung von Magnetfeldern für die Bildgebung mittels magnetischer Resonanz
JP2767659B2 (ja) 1991-12-17 1998-06-18 信越化学工業株式会社 磁場発生装置
DE69318998T2 (de) 1992-02-15 1998-10-15 Santoku Metal Ind Legierungsblock für einen Dauermagnet, anisotropes Pulver für einen Dauermagnet, Verfahren zur Herstellung eines solchen und Dauermagneten
IL106779A0 (en) 1992-09-11 1993-12-08 Magna Lab Inc Permanent magnetic structure
GB2276946B (en) * 1993-04-08 1997-04-02 Oxford Magnet Tech Improvements in or relating to MRI magnets
FR2704975B1 (fr) 1993-05-03 1995-06-23 Commissariat Energie Atomique Structure d'aimant permanent pour la production d'une induction magnétique stable et homogène dans un volume donné.
EP0645641B1 (en) 1993-09-29 1999-06-16 Oxford Magnet Technology Limited Improvements in or relating to MRI magnets
JPH0831635A (ja) 1994-07-08 1996-02-02 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
JP3106084B2 (ja) * 1995-03-13 2000-11-06 信越化学工業株式会社 磁石対向型永久磁石磁気回路
JP3014319B2 (ja) 1996-04-12 2000-02-28 信越化学工業株式会社 磁石対向型永久磁石回路
US5900793A (en) 1997-07-23 1999-05-04 Odin Technologies Ltd Permanent magnet assemblies for use in medical applications
US6150911A (en) 1996-07-24 2000-11-21 Odin Technologies Ltd. Yoked permanent magnet assemblies for use in medical applications
WO1999033397A1 (fr) 1996-08-26 1999-07-08 Sumitomo Special Metals Co., Ltd. Generateur de champ magnetique pour irm
JPH10174681A (ja) 1996-12-17 1998-06-30 Shin Etsu Chem Co Ltd 永久磁石磁気回路
IT1294051B1 (it) 1997-04-29 1999-03-15 Esaote Spa Struttura magnetica per la generazione di campi magnetici adatti all'uso nel rilevamento d'immagine in risonanza magnetica nucleare
AU9364698A (en) 1997-09-25 1999-04-12 Odin Technologies Ltd. Magnetic apparatus for mri
JPH11127561A (ja) 1997-10-22 1999-05-11 Denso Corp 磁石併用型回転電機の回転子及びその製造方法
IT1298022B1 (it) 1997-12-05 1999-12-20 Esaote Spa Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.
US6255670B1 (en) 1998-02-06 2001-07-03 General Electric Company Phosphors for light generation from light emitting semiconductors
WO1999040593A1 (en) 1998-02-09 1999-08-12 Odin Medical Technologies Ltd A method for designing open magnets and open magnetic apparatus for use in mri/mrt probes
IT1305960B1 (it) 1998-05-11 2001-05-21 Esaote Spa Struttura di magnete in particolare per macchine per il rilevamentod'immagine in risonanza magnetica nucleare.
US6281775B1 (en) 1998-09-01 2001-08-28 Uri Rapoport Permanent magnet arrangement with backing plate
GB2341447B (en) 1998-09-11 2003-08-20 Oxford Magnet Tech Temperature control system for a permanent magnetic mri system
US5942962A (en) 1998-10-02 1999-08-24 Quadrant Technology Dipole magnetic structure for producing uniform magnetic field
US6259252B1 (en) 1998-11-24 2001-07-10 General Electric Company Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles
CN1251252C (zh) 1999-02-12 2006-04-12 通用电气公司 含有铈、钕和/或镨的铁－硼－稀土型永磁材料及其生产方法
US6120620A (en) 1999-02-12 2000-09-19 General Electric Company Praseodymium-rich iron-boron-rare earth composition, permanent magnet produced therefrom, and method of making
US6489872B1 (en) 1999-05-06 2002-12-03 New Mexico Resonance Unilateral magnet having a remote uniform field region for nuclear magnetic resonance
KR100319923B1 (ko) 1999-05-10 2002-01-09 윤종용 자기공명영상장치용 자기장 발생 장치
EP1666910B1 (en) 1999-11-16 2009-03-11 Hitachi Metals, Ltd. Magnetic-field generator comprising a pole-piece unit
US6467157B1 (en) 2000-01-26 2002-10-22 Odin Technologies, Ltd. Apparatus for construction of annular segmented permanent magnet
US20030011451A1 (en) 2000-08-22 2003-01-16 Ehud Katznelson Permanent magnet assemblies for use in medical applications
JP3559262B2 (ja) * 2000-10-06 2004-08-25 株式会社Ｎｅｏｍａｘ 磁界調整用装置、磁界調整方法および記録媒体
US6448772B1 (en) 2000-10-06 2002-09-10 Sumitomo Special Metals Co., Ltd. Magnetic field adjusting apparatus, magnetic field adjusting method and recording medium
US6518754B1 (en) 2000-10-25 2003-02-11 Baker Hughes Incorporated Powerful bonded nonconducting permanent magnet for downhole use
US6670877B2 (en) * 2001-01-25 2003-12-30 Uri Rapoport Field adjusting mechanisms and methods for permanent magnet arrangement with backplate
US6518867B2 (en) 2001-04-03 2003-02-11 General Electric Company Permanent magnet assembly and method of making thereof
CN1400473A (zh) * 2001-07-27 2003-03-05 武汉宏建电气技术有限公司 磁共振成像系统用永久磁体装置及磁性材料在其内的分布

Similar Documents

Publication Publication Date Title
JP2005103266A5 (https=)
US7810326B2 (en) Torque actuator incorporating shape memory alloy composites
JP2022060479A5 (https=)
JP2005109487A5 (https=)
JP2011142807A5 (https=)
WO2007051949A3 (fr) Transducteur electrodynamique, applications aux haut-parleurs et geophones
RU2516393C2 (ru) Безжелезный приводной блок с катушечным преобразователем, не обладающий рассеянием
JP2008536469A5 (https=)
JP2005109487A (ja) 極片のないマルチリング式永久磁石並びにその製作方法
JPS58175533U (ja) 機械構造部分の移動装置
JP3119707B2 (ja) 磁歪素子
JP2006029362A5 (https=)
JP2001345207A5 (https=)
JP2001351810A5 (https=)
JPH03233910A (ja) 永久磁石の着磁方法
WO2007067704A3 (en) Linear voice coil actuator as a bi-directional electromagnetic spring
EP1571656A3 (en) Magnetic disk device
JPH06284670A (ja) リニアアクチュエータ
GB2386465A (en) Self-positioning magnetic latch
JP2004281737A5 (https=)
TW200711192A (en) Super-conducting device and axial gap type super-conducting motor
EP1607663A3 (en) Solenoid valve, manufacturing method thereof and binding method between iron-based material and aluminium-based member
JP2004115921A5 (https=)
JP2822180B2 (ja) リング磁石の成形装置
JP3077280B2 (ja) 着磁装置およびそれを用いた永久磁石の着磁方法