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公开(公告)号：US20080204016A1
公开(公告)日：2008-08-28
申请号：US11913019
申请日：2006-04-10
申请人： Ian Leitch McDougall , Peter Hanley
发明人： Ian Leitch McDougall , Peter Hanley
IPC分类号： G01R33/44
CPC分类号： G01R33/3808 , G01R33/3815 , G01R33/445 , G01R33/48
摘要： Magnetic resonance apparatus is provided comprising a magnet having a first pair of coils arranged in a plane. The coils are operable in a counter-running manner when in use so as to generate a sensitive volume of magnetic field spaced apart from said plane. The magnetic field in the sensitive volume is arranged to have sufficient uniformity to enable magnetic resonance signals to be obtained from a target when located within the sensitive volume. The magnetic field direction Z is oriented to lie substantially parallel to the planes. The coils are arranged such that the sensitive volume is elongate in a direction X substantially parallel to the planes. A drive system is provided to cause relative movement between the magnet and the target so as to allow the sensitive volume to be moved with respect to the target.
摘要翻译： 提供磁共振装置，其包括具有布置在平面中的第一对线圈的磁体。 线圈在使用时可以以相反运行方式操作，以便产生与所述平面间隔开的敏感体积的磁场。 敏感体积中的磁场被布置成具有足够的均匀性，以使得当位于灵敏体积内时可以从目标获得磁共振信号。 磁场方向Z定向为基本平行于平面。 线圈布置成使得敏感体积在基本上平行于平面的方向X上是细长的。 提供驱动系统以引起磁体和目标之间的相对移动，从而允许敏感体积相对于目标物移动。
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公开(公告)号：US06611408B2
公开(公告)日：2003-08-26
申请号：US09935157
申请日：2001-08-23
申请人： Peter Hanley , Ian Leitch McDougall
发明人： Peter Hanley , Ian Leitch McDougall
IPC分类号： H02H700
CPC分类号： H02H9/023 , H01F36/00 , Y02E40/66 , Y02E40/69 , Y10S336/01
摘要： The present invention relates to an electrical transformer which includes a primary winding coupled to first and second magnetic circuits. A magnetic flux is driven through the magnetic circuits by the primary winding. First and second secondary windings are also provided, each associated with a respective one of the magnetic circuits and being electrically connected together in series opposition. A closed superconducting fault current winding is also provided to link with the magnetic flux in the second magnetic circuit.
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公开(公告)号：US6043731A
公开(公告)日：2000-03-28
申请号：US737080
申请日：1996-10-30
申请人： Ian Leitch McDougall , Peter Hanley
发明人： Ian Leitch McDougall , Peter Hanley
CPC分类号： H02H9/023 , H01L39/20 , H01F2006/001 , Y02E40/69 , Y10S505/881
摘要： A current limiting device having an electrical superconductor for attachment in an electrical circuit, the superconductor being made of material having a critical current density which varies with applied magnetic field. A magnetic field generator generates a magnetic field to which the superconductor is exposed. Under normal working conditions a magnetic field applied causes the critical current density to be less than a maximum critical current density. A controller adjusts the critical current density such that after a current carried by the superconductor exceeds the critical current density so that the superconductor transforms to a resistive state, the controller can be activated to increase the critical current density causing the superconductor to return the superconducting condition without terminating the flow of current through the superconductor.
摘要翻译： PCT No.PCT / GB96 / 00712 Sec。 371日期1996年10月30日 102（e）日期1996年10月30日PCT 1996年3月22日PCT公布。 公开号WO96 / 30990 日期1996年10月3日一种具有用于连接在电路中的电超导体的限流装置，超导体由具有随施加的磁场变化的临界电流密度的材料制成。 磁场发生器产生超导体暴露的磁场。 在正常工作条件下，施加的磁场使临界电流密度小于最大临界电流密度。 控制器调节临界电流密度，使得在由超导体承载的电流超过临界电流密度以使超导体转变为电阻状态之后，控制器可被激活以增加临界电流密度，从而使超导体返回超导条件 而不终止通过超导体的电流。
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公开(公告)号：US07248048B2
公开(公告)日：2007-07-24
申请号：US10554940
申请日：2004-04-30
申请人： Ian Leitch McDougall , Peter Hanley
发明人： Ian Leitch McDougall , Peter Hanley
IPC分类号： G01V3/00
CPC分类号： G01R33/381 , G01R33/3815 , G01R33/3875
摘要： An apparatus for magnetic resonance imaging includes a first magnet for generating a first magnetic field and a second magnet for generating a second magnetic field, dissimilar to the first magnetic field, the second magnet being spaced apart from the first magnet. The apparatus is arranged such that the first and second magnets cooperate to generate a substantially homogeneous magnetic field defining a working region wherein the first and second magnetic fields are arranged asymmetrically with respect to the working region, and wherein at least part of the working region is positioned within the first magnet or between the first and second magnets.
摘要翻译： 用于磁共振成像的装置包括用于产生第一磁场的第一磁体和用于产生与第一磁场不同的第二磁场的第二磁体，第二磁体与第一磁体间隔开。 该装置被布置成使得第一和第二磁体协调以产生限定工作区域的基本上均匀的磁场，其中第一和第二磁场相对于工作区域不对称地布置，并且其中工作区域的至少一部分是 位于第一磁体内或第一和第二磁体之间。
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公开(公告)号：US06239957B1
公开(公告)日：2001-05-29
申请号：US08931486
申请日：1997-09-16
申请人： Ian Leitch McDougall , Peter Hanley
发明人： Ian Leitch McDougall , Peter Hanley
IPC分类号： H01B1200
CPC分类号： H01L39/16 , H02H9/023 , Y02E40/69 , Y10S505/885
摘要： An electrical current limiting device comprises an electrical superconductor for attachment in an electrical circuit. The superconductor achieves a superconducting condition at relatively high temperatures. A cooling system includes a motor for flowing a cooled gas past the superconductor so that heat can be removed from the superconductor by a heat transfer process with the cooled gas.
摘要翻译： 电流限制装置包括用于附接在电路中的电超导体。 超导体在相对较高的温度下实现超导条件。 冷却系统包括用于使冷却的气体流过超导体的电动机，使得可以通过与冷却的气体的热传递过程从超导体除去热量。
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公开(公告)号：US07479860B2
公开(公告)日：2009-01-20
申请号：US10528146
申请日：2003-09-30
IPC分类号： H01F5/00
CPC分类号： G01R33/381
摘要： A magnetic field generating assembly comprising a set (A1-A3;B1-B3;C1-C3) of, typically substantially coaxial, coils substantially symmetrically arranged about a plane orthogonal to the axis. At least some of the coils carry working currents in the opposite sense to the other coils The arrangement of turns and working currents carried by the coils is such that a first working volume (10) with a substantially homogeneous magnetic field is generated within the envelope defined by the assembly, and two second working volumes (11) each with a substantially homogeneous magnetic field are generated outside the envelope, the homogeneity of each of the first and second working volumes being sufficient to perform a NMR experiment on a sample in the working volume.
摘要翻译： 磁场产生组件包括通常基本上同轴的线圈（A1-A3; B1-B3; C1-C3），该组线圈基本上对称地布置成围绕与该轴线正交的平面。 至少一些线圈将工作电流与其他线圈的相反意义上传送。线圈承载的匝数和工作电流的布置使得具有基本均匀的磁场的第一工作容积（10）在限定的外壳内产生 通过组件，并且在外壳外部产生每个具有基本均匀的磁场的两个第二工作体积（11），第一和第二工作体积中的每一个的均匀性足以对工作体积中的样品进行NMR实验 。
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公开(公告)号：US07394255B2
公开(公告)日：2008-07-01
申请号：US11570689
申请日：2005-06-24
申请人： Ian Leitch McDougall , Peter Hanley
发明人： Ian Leitch McDougall , Peter Hanley
IPC分类号： G01V3/00
CPC分类号： G01R33/3808 , G01R33/3815
摘要： Magnetic resonance apparatus is provided comprising a magnet having a plurality of pairs of coils arranged in respective substantially parallel planes. The coils in each pair are operable in a counter-running manner when in use so as to generate a region of magnetic field spaced apart from said planes, having sufficient uniformity to enable magnetic resonance signals to be obtained from a target within the region. The magnetic field has a magnetic field direction Z lying substantially parallel to said planes and each of the coils is elongate in a direction X substantially parallel to said planes.
摘要翻译： 提供磁共振装置，其包括具有布置在各个基本上平行的平面中的多对线圈的磁体。 每对中的线圈在使用时可以以相反运行的方式操作，以便产生与所述平面间隔开的磁场区域，具有足够的均匀性以使得能够从区域内的目标获得磁共振信号。 磁场具有基本上平行于所述平面的磁场方向Z，并且每个线圈在基本上平行于所述平面的方向X上是细长的。
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公开(公告)号：US06300856B1
公开(公告)日：2001-10-09
申请号：US09379607
申请日：1999-08-24
申请人： Peter Hanley , Ian Leitch McDougall
发明人： Peter Hanley , Ian Leitch McDougall
IPC分类号： H02H700
CPC分类号： H02H9/023 , H01F36/00 , Y02E40/66 , Y02E40/69 , Y10S336/01
摘要： The present invention relates to an electrical transformer which includes a primary winding coupled to first and second magnetic circuits. A magnetic flux is driven through the magnetic circuits by the primary winding. First and second secondary windings are also provided, each associated with a respective one of the magnetic circuits and being electrically connected together in series opposition. A closed superconducting fault current winding is also provided to link with the magnetic flux in the second magnetic circuit.
摘要翻译： 本发明涉及一种电变压器，其包括耦合到第一和第二磁路的初级绕组。 磁通通过初级绕组的磁路驱动。 还提供了第一和第二次级绕组，每个次级绕组与相应的一个磁路相关联并且串联地电连接在一起。 还提供闭合超导故障电流绕组以与第二磁路中的磁通量相关联。
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公开(公告)号：US5680044A
公开(公告)日：1997-10-21
申请号：US428245
申请日：1995-06-30
申请人： Ian Leitch McDougall , Peter Hanley
发明人： Ian Leitch McDougall , Peter Hanley
IPC分类号： G01R33/32 , A61B5/055 , G01R33/34 , G01R33/3415 , G01R33/38 , G01R33/387 , G01V3/00
CPC分类号： G01R33/3808 , G01R33/34061
摘要： A nuclear magnetic resonance apparatus having a magnetic assembly which generates a main static field in a working region which is external of the magnetic assembly. The main static magnetic field has a uniformity suitable for performing NMR experiments. An oscillating magnetic field generating assembly is provided with a set of axially aligned electrical coils connected to an oscillating electrical source. The axially aligned electrical coils generate an rf magnetic filed within the working region of the magnet assembly. Adjacent coils of the axially aligned electrical coils are wound in opposite senses and connected in series so as to generate opposing magnetic fields which superimpose to produce an oscillating magnetic field external of the magnet assembly. The oscillating magnetic field is sufficiently uniform within the working region to perform NMR experiments.
摘要翻译： PCT No.PCT / GB93 / 02370 Sec。 371日期：1995年6月30日 102（e）1995年6月30日日期PCT 1993年11月18日PCT公布。 公开号WO94 / 11748 日期：1994年5月26日一种具有磁性组件的核磁共振装置，其在在磁性组件的外部的工作区域中产生主静态。 主静磁场具有适合进行NMR实验的均匀性。 振荡磁场产生组件设置有一组连接到振荡电源的轴向对齐的电线圈。 轴向对准的电线圈在磁体组件的工作区域内产生磁场。 轴向对准的电线圈的相邻线圈以相反的感测缠绕并串联连接，以产生叠加以产生磁体组件外部的振荡磁场的相反的磁场。 振荡磁场在工作区域内足够均匀，进行NMR实验。
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公开(公告)号：US07355499B2
公开(公告)日：2008-04-08
申请号：US10528194
申请日：2003-09-30
IPC分类号： G01V3/00
CPC分类号： G01R33/3808 , G01R33/381 , G01R33/3815
摘要： A magnet assembly comprising first and second sets of coils (1, 2) for generating respective magnetic fields, wherein the coils are constructed and arranged such that under working conditions, a first homogeneous region (3) can be generated within the envelope defined by the magnet 10 assembly and a second homogeneous region (4) can be generated outside the envelope, the resultant magnetic field in each region being sufficiently homogeneous to enable a NMR process to be performed on an object in the region.
摘要翻译： 一种磁体组件，包括用于产生相应磁场的第一和第二组线圈（1,2），其中所述线圈被构造和布置成使得在工作条件下，可以在由所述线圈限定的外壳内产生第一均匀区域（3） 可以在外壳外部产生磁体10组件和第二均匀区域（4），每个区域中的所得磁场足够均匀，以使得能够对该区域中的对象执行NMR处理。
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