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SUPERCONDUCTING DEVICE AND MAGNET DEVICE NEW

外国特許コード F190009805
整理番号 (S2017-0971-N0)
掲載日 2019年5月8日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP031681
国際公開番号 WO 2019049720
国際出願日 平成30年8月28日(2018.8.28)
国際公開日 平成31年3月14日(2019.3.14)
優先権データ
  • 特願2017-171907 (2017.9.7) JP
発明の名称 (英語) SUPERCONDUCTING DEVICE AND MAGNET DEVICE NEW
発明の概要(英語) A superconducting device (1) is provided in a magnet device (2) including a magnet part (3) that generates a magnetic field. The superconducting device (1) has a superconducting bulk part (4) disposed outside the magnet part (3). The superconducting bulk part (4) traps a magnetic field in a superconducting state, and a magnetic circuit (5) is formed by the magnet part (3) and the superconducting bulk part (4) trapping the magnetic field.
従来技術、競合技術の概要(英語) BACKGROUND ART
For example a magnetic resonance imaging (Magnetic Resonance Imaging: MRI) apparatus or the like of the magnet device, comprises a magnet that generates a strong magnetic field magnet device is used. United States Patent 7944208 (Patent Document 1) is incorporated herein, in the magnetic resonance imaging system, the main magnet has the opposite magnetic poles, disposed along the horizontal axis, and, the main magnet to detect the magnetic field generated by the open-type magnetic resonance imaging is configured to define a region in which the disclosed technology.
Such a magnet that generates a strong magnetic field in the device, leakage of a strong magnetic field to the outside of the magnet unit can be prevented or suppressed and, at the periphery of the magnet unit in order to reduce the strength of the magnetic field, along an annular path, from one pole of the magnet unit through the magnetic body returns to other pole of the magnet so as to form a magnetic circuit, magnetic circuit member, the magnetic material of high magnetic permeability such as iron is provided.
Japanese Patent Application Laid-Open 7-178071 (Patent Document 2) is, in the MRI apparatus magnet assembly, mounted to the top surface of the lower base of the lower permanent magnet and the yoke, the yoke of the lower base in a standing manner from the edge of the column yoke, the yoke and the permanent magnet supported on the post below the lower surface facing the permanent magnet on the yoke is attached to the base, a technology which has been disclosed.
On the other hand, for example in a device other than the MRI magnet system, as a magnet that generates a strong magnetic field, and is used for superconducting is bulky. Non-Patent Document 1 and Non-Patent Document 2 is, the magnesium diboride superconducting (MgB2) as the permanent magnet is made of the technology used is bulky has been disclosed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • YAMAMOTO, Akiyasu
  • SHIMAZAKI, Nanami
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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