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71. 发明授权

US06181228B2 Superconductive magnet including a cryocooler coldhead 失效
公开(公告)号：US06181228B2
公开(公告)日：2001-01-30
申请号：US09436830
申请日：1999-11-09
申请人： Evangelos Trifon Laskaris , Paul Shadforth Thompson , Yu Wang
发明人： Evangelos Trifon Laskaris , Paul Shadforth Thompson , Yu Wang
IPC分类号： H01F500
CPC分类号： F17C3/085 , F17C2203/0391 , F17C2203/0629 , F17C2223/0161 , F17C2227/0353 , F17C2260/036 , F25B2400/17 , F25D19/006 , G01R33/3815 , H01F6/04 , Y10S505/893 , Y10S505/894
摘要： A magnet, such as an open or closed magnet, has a first assembly with at least one superconductive main coil and with a first vacuum enclosure enclosing the main coil(s). A first cryocooler coldhead has a rigid first housing and is generally vertically aligned. A first flexible bellows is vertically aligned, has a first end attached to the first housing of the first cryocooler coldhead and has a second end attached to the first vacuum enclosure of the first assembly.

72. 发明授权

US06172588B2 Apparatus and method for a superconductive magnet with pole piece 失效
标题翻译：具有极片的超导磁体的装置和方法
公开(公告)号：US06172588B2
公开(公告)日：2001-01-09
申请号：US09385407
申请日：1999-08-31
申请人： Evangelos Trifon Laskaris , Michael Anthony Palmo
发明人： Evangelos Trifon Laskaris , Michael Anthony Palmo
IPC分类号： H01F500
CPC分类号： H01F6/00 , G01R33/3806 , G01R33/3815 , Y10S505/892
摘要： A magnet, such as an open magnetic-resonance-imaging (MRI) magnet) has a first assembly including a superconductive main coil and a magnetizable pole piece which, during magnet operation, has a temperature equal to generally the temperature of the main coil. In one example, a cryogenic-fluid (e.g., liquid helium) dewar encloses the main coil, and the dewar has an interior surface defined in part by a surface portion of the pole piece. A method for providing a homogeneous imaging volume for a magnet includes steps to construct the above-described magnet.
摘要翻译：诸如开放式磁共振成像（MRI）磁体的磁体具有包括超导主线圈和可磁化极片的第一组件，其在磁铁操作期间具有等于主线圈温度的温度。在一个实例中，低温流体（例如液氦）杜瓦包围主线圈，并且杜瓦具有部分由极片的表面部分限定的内表面。提供用于磁体的均匀成像体积的方法包括构造上述磁体的步骤。

73. 发明授权

US6081178A Superconductive magnet having a tube suspension assembly 失效
标题翻译：具有管悬挂组件的超导磁体
公开(公告)号：US6081178A
公开(公告)日：2000-06-27
申请号：US441172
申请日：1999-11-15
申请人： Yu Wang , Evangelos Trifon Laskaris , John Arthur Urbahn
发明人： Yu Wang , Evangelos Trifon Laskaris , John Arthur Urbahn
IPC分类号： H01F6/00 , H01F6/06
CPC分类号： H01F6/00
摘要： A superconductive magnet includes a cryogenic vessel enclosing superconductive coils, a thermal shield enclosing the cryogenic vessel, a vacuum enclosure enclosing the thermal shield, a tube suspension assembly having a plurality of tubes located between respective ones of the cryogenic vessel, thermal shield and vacuum enclosure and axially overlapped and interconnected with the cryogenic vessel, thermal shield and vacuum enclosure and the tubes forming bonded joints with one another, and a plurality of locking clip arrangements attached to and having portions at least partially overlapping the bonded joints of the tubes of the suspension assembly so as to reinforce and strengthen the bonded joints.
摘要翻译：超导磁体包括封闭超导线圈的低温容器，封闭低温容器的热屏蔽件，封闭热屏蔽的真空外壳，管悬浮组件，其具有位于相应的低温容器，热屏蔽和真空外壳之间的多个管并且与低温容器，热屏蔽和真空外壳轴向重叠并互连，并且管彼此形成接合接头，以及多个锁定夹装置，其连接到并且具有至少部分地与悬架的管的接合接头重叠的部分组装，以加固和加固接合接头。

74. 发明授权

US5999075A Open magnet with shielding 有权
标题翻译：开放磁体与屏蔽
公开(公告)号：US5999075A
公开(公告)日：1999-12-07
申请号：US199095
申请日：1998-11-24
申请人： Evangelos Trifon Laskaris , Michael Anthony Palmo, Jr.
发明人： Evangelos Trifon Laskaris , Michael Anthony Palmo, Jr.
IPC分类号： A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/385 , G01R33/421 , H01F7/20 , H01F27/36 , H01F5/00
CPC分类号： G01R33/421 , G01R33/3806 , G01R33/3815
摘要： An open magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced-apart assemblies. Each assembly has a shielding coil located longitudinally outward from a main coil and a magnetizable pole piece spaced apart from and proximate the main and shielding coils. The method of the invention generates a magnetic field in a first area between the two assemblies while shielding a second area not between the two assemblies from a stray magnetic field by creating the previously-described open magnet.
摘要翻译：用于磁共振成像（MRI）应用的开放磁体。磁体具有两个间隔开的组件。每个组件具有从主线圈纵向向外定位的屏蔽线圈和与主屏蔽线圈和屏蔽线圈间隔开并接近的可磁化极片。本发明的方法在两个组件之间的第一区域中产生磁场，同时通过产生前述的开放磁体，将两个组件之间的第二区域从杂散磁场屏蔽。

75. 发明授权

US5883558A Open superconductive magnet having shielding 失效
标题翻译：开放的具有屏蔽性的超导磁体
公开(公告)号：US5883558A
公开(公告)日：1999-03-16
申请号：US61415
申请日：1998-04-16
申请人： Evangelos Trifon Laskaris , Michael Anthony Palmo , Bu-Xin Xu
发明人： Evangelos Trifon Laskaris , Michael Anthony Palmo , Bu-Xin Xu
IPC分类号： H01F27/36 , G01R33/38 , G01R33/3815 , G01R33/421 , H01F6/00 , H05K9/00 , H01F1/00
CPC分类号： G01R33/421 , G01R33/3806 , G01R33/3815
摘要： An open superconductive magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced-apart assemblies and preferably has a "C" shape. Each assembly has: a vacuum enclosure having a longitudinal axis and surrounding a bore; a magnetizable pole piece located within the bore and outside the vacuum enclosure; and a superconductive main coil, a superconductive shielding coil, and a magnetizable ring positioned within the vacuum enclosure. There is no magnetizable solid path between the two pole pieces. Preferably, the ring is positioned longitudinally between the main and shielding coils.
摘要翻译：用于磁共振成像（MRI）应用的开放超导磁体。磁体具有两个间隔开的组件，并且优选具有“C”形状。每个组件具有：具有纵向轴线并围绕孔的真空外壳; 位于孔内并位于真空外壳外的可磁化极片; 以及超导主线圈，超导屏蔽线圈和位于真空外壳内的可磁化环。两个极片之间没有可磁化的实心路径。优选地，环被纵向地定位在主屏蔽线圈和屏蔽线圈之间。

76. 发明授权

US5874880A Shielded and open superconductive magnet 失效
标题翻译：屏蔽和打开超导磁体
公开(公告)号：US5874880A
公开(公告)日：1999-02-23
申请号：US35639
申请日：1998-03-05
申请人： Evangelos Trifon Laskaris , Michael Anthony Palmo
发明人： Evangelos Trifon Laskaris , Michael Anthony Palmo
IPC分类号： A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/385 , G01R33/421 , H01F7/20 , H01F27/36 , G01V3/00
CPC分类号： G01R33/421 , G01R33/3806 , G01R33/3815
摘要： An open superconductive magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced apart assemblies, wherein each assembly has a superconductive shielding coil spaced longitudinally outward and apart from a superconductive main coil. A magnetizable pole piece is spaced apart from the coils, has a radially-outer portion at least partially radially overlapping the main coil, and has a longitudinally-inner portion which projects longitudinally inward past the longitudinally outer end of the main coil.
摘要翻译：用于磁共振成像（MRI）应用的开放超导磁体。磁体具有两个间隔开的组件，其中每个组件具有纵向向外并与超导主线圈隔开的超导屏蔽线圈。可磁化极片与线圈间隔开，具有至少部分地径向重叠主线圈的径向外部，并且具有纵向内部，其纵向向内突出穿过主线圈的纵向外端。

77. 发明授权

US09640308B2 High temperature superconducting magnet 有权
公开(公告)号：US09640308B2
公开(公告)日：2017-05-02
申请号：US12287813
申请日：2008-10-14
申请人： Evangelos Trifon Laskaris , James Pellegrino Alexander , Kiruba Sivasubramaniam , Tao Zhang
发明人： Evangelos Trifon Laskaris , James Pellegrino Alexander , Kiruba Sivasubramaniam , Tao Zhang
IPC分类号： F25B19/00 , H01F6/04 , H02K9/00 , H02K41/00 , H02K1/22 , F25D15/00 , F17C13/00 , H02K3/00
CPC分类号： H01F6/04 , F17C13/00 , F25B19/00 , F25D15/00 , H02K1/22 , H02K3/00 , H02K9/00 , H02K41/00
摘要： A high temperature superconducting (HTS) magnet coil disposed within a cryostat is configured with a thermo-siphon cooling system containing a liquid cryogen. The cooling system is configured to indirectly conduction cool the HTS magnet coil by nucleate boiling of the liquid cryogen that is circulated by the thermo-siphon in a cooling tube attached to a heat exchanger bonded to the outside surface of the HTS magnet coil. A supply dewar is configured with a re-condenser cryocooler coldhead to recondense boiloff vapors generated during the nucleate boiling process.

78. 发明授权

US09182464B2 Retractable current lead 有权
标题翻译：伸缩电流引线
公开(公告)号：US09182464B2
公开(公告)日：2015-11-10
申请号：US13560176
申请日：2012-07-27
申请人： Susumu Mine , Evangelos Trifon Laskaris , Paul St. Mark Shadforth Thompson
发明人： Susumu Mine , Evangelos Trifon Laskaris , Paul St. Mark Shadforth Thompson
IPC分类号： G01R33/3815 , H01F6/06
CPC分类号： G01R33/3815 , H01F6/065 , Y10T29/49014
摘要： A current lead assembly for minimizing heat load to a conduction cooled superconducting magnet during a ramp operation is provided. The current lead assembly includes a vacuum chamber having a through hole to enable a retractable current lead having a retractable contact to penetrate within the vacuum chamber. A superconducting magnet is arranged inside of the vacuum chamber and includes a magnet lead. A current contact is arranged inside of the vacuum chamber beneath the through-hole and is coupled to the magnet lead via a thermal connector. The current contact is supported by a thermal isolation support structure coupled to an inside wall of the vacuum chamber. An actuator assembly is provided to contact the retractable contact with the current contact, where connection occurs at ambient temperature inside of the thermal isolation support structure.
摘要翻译：提供了一种用于在斜坡操作期间使传导冷却的超导磁体的热负荷最小化的电流引线组件。电流引线组件包括具有通孔的真空室，以使得具有伸缩接触件的可伸缩电流引线能够穿透真空室。超导磁体设置在真空室的内部并且包括磁体引线。当前的触点设置在通孔下面的真空室的内部，并通过热连接器耦合到磁体引线。当前接触由耦合到真空室的内壁的热隔离支撑结构支撑。提供致动器组件以使可伸缩触头与当前触点接触，其中连接发生在热隔离支撑结构内部的环境温度下。

79. 发明授权

US08914086B2 Superconducting magnet system 有权
标题翻译：超导磁体系统
公开(公告)号：US08914086B2
公开(公告)日：2014-12-16
申请号：US13559256
申请日：2012-07-26
申请人： Anbo Wu , Minfeng Xu , Timothy James Hollis , Ye Bai , Weijun Shen , Evangelos Trifon Laskaris , Jian-She Wang , Yan Zhao
发明人： Anbo Wu , Minfeng Xu , Timothy James Hollis , Ye Bai , Weijun Shen , Evangelos Trifon Laskaris , Jian-She Wang , Yan Zhao
IPC分类号： H01B12/00 , H01F6/00 , H01L39/00 , G01R33/3815 , H01F6/06 , H01F6/04 , G01R33/28
CPC分类号： H01F6/06 , G01R33/288 , G01R33/3815 , H01F6/04
摘要： A superconducting magnet system includes a coil support structure, superconducting coils, and electrically and thermally conductive windings. The superconducting coils and the conductive windings are supported by the coil support structure. Each conductive winding is electromagnetically coupled with a corresponding superconducting coil. Each conductive winding is electrically shorted.
摘要翻译：超导磁体系统包括线圈支撑结构，超导线圈以及导电和导热绕组。超导线圈和导电绕组由线圈支撑结构支撑。每个导电绕组与相应的超导线圈电磁耦合。每个导电绕组电气短路。

80. 发明申请

US20140028316A1 RETRACTABLE CURRENT LEAD 有权
标题翻译：可回收的电流
公开(公告)号：US20140028316A1
公开(公告)日：2014-01-30
申请号：US13560176
申请日：2012-07-27
申请人： Susumu Mine , Evangelos Trifon Laskaris , Paul St. Mark Shadforth Thompson
发明人： Susumu Mine , Evangelos Trifon Laskaris , Paul St. Mark Shadforth Thompson
IPC分类号： H01F6/00 , H01L39/24 , G01R33/28
CPC分类号： G01R33/3815 , H01F6/065 , Y10T29/49014
摘要： A current lead assembly for minimizing heat load to a conduction cooled superconducting magnet during a ramp operation is provided. The current lead assembly includes a vacuum chamber having a through hole to enable a retractable current lead having a retractable contact to penetrate within the vacuum chamber. A superconducting magnet is arranged inside of the vacuum chamber and includes a magnet lead. A current contact is arranged inside of the vacuum chamber beneath the through-hole and is coupled to the magnet lead via a thermal connector. The current contact is supported by a thermal isolation support structure coupled to an inside wall of the vacuum chamber. An actuator assembly is provided to contact the retractable contact with the current contact, where connection occurs at ambient temperature inside of the thermal isolation support structure.
摘要翻译：提供了一种用于在斜坡操作期间使传导冷却的超导磁体的热负荷最小化的电流引线组件。电流引线组件包括具有通孔的真空室，以使得具有伸缩接触件的可伸缩电流引线能够穿透真空室。超导磁体设置在真空室的内部并且包括磁体引线。当前的触点设置在通孔下面的真空室的内部，并通过热连接器耦合到磁体引线。当前接触由耦合到真空室的内壁的热隔离支撑结构支撑。提供致动器组件以使可伸缩触头与当前触点接触，其中连接发生在热隔离支撑结构内部的环境温度下。

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