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1. 发明授权

US06717408B2 Support structure for open MRI apparatus 失效
标题翻译：开放MRI设备的支撑结构
公开(公告)号：US06717408B2
公开(公告)日：2004-04-06
申请号：US09826655
申请日：2001-04-05
申请人： Constantinos Minas , F. Scott Murray
发明人： Constantinos Minas , F. Scott Murray
IPC分类号： G01V300
CPC分类号： G01R33/3806
摘要： An open or split type MRI apparatus has two axially spaced magnet coil half sections separated and supported by a compact support structure. Only two diametrically opposed supports are needed to react the high axial and torsional loads produced or received by the MRI apparatus. One support is loaded under pure compression, and the other support is loaded under compression and tension.
摘要翻译：开放式或分体型MRI装置具有由紧凑的支撑结构分离和支撑的两个轴向间隔开的磁体线圈半部分。仅需要两个直径相对的支撑件来对由MRI装置产生或接收的高轴向和扭转载荷作出反应。一个支撑件在纯压缩下装载，另一个支撑件在压缩和张力下装载。

2. 发明授权

US5586437A MRI cryostat cooled by open and closed cycle refrigeration systems 失效
标题翻译： MRI低温恒温器由开放和封闭循环制冷系统冷却
公开(公告)号：US5586437A
公开(公告)日：1996-12-24
申请号：US524400
申请日：1995-09-06
申请人： Leo Blecher , Ralph C. Longsworth , F. Scott Murray , Philip A. Jonas , Michael Boiarski
发明人： Leo Blecher , Ralph C. Longsworth , F. Scott Murray , Philip A. Jonas , Michael Boiarski
IPC分类号： F17C13/00 , F25B9/00 , F17C5/02
CPC分类号： F25B9/00 , G01R33/3804 , H01F6/04 , F25B2400/17
摘要： A MRI cryostat, which contains a superconducting magnet operating in a bath of liquid helium, reduces the boil-off rate of helium by intercepting most of the heat in-leakage by means of a throttle cycle (TC) refrigerator operating at a low side temperature of about 90K. The main heat exchanger for the throttle cycle refrigerator is located within or immediately adjacent to the cryostat housing and delivers cold liquid to a cold heat exchanger that is in thermal contact with an outer radiation shield, support struts, neck tube and electrical leads inside the cryostat. Heat is intercepted by the outer shield from essentially all paths between a 300K ambient and a 4K load temperature, which temperature results from liquid helium boil-off to atmosphere. A second, inner radiation shield at 35K is cooled by gaseous helium that boils from the liquid helium bath. There are no moving parts of the refrigeration system in the cryostat. Thus, vibration, noise and disturbance of the magnetic field are reduced. The refrigerator installation is small and low in cost; power consumption is reduced relative to the prior art.
摘要翻译：包含在液氦浴中操作的超导磁体的MRI低温恒温器通过在低温下操作的节气门循环（TC）冰箱拦截大部分的热泄漏来降低氦的蒸发速率约90K。节流循环冰箱的主热交换器位于或紧邻低温恒温器壳体，并将冷液体输送到与外辐射屏蔽件，支撑支柱，颈管和低温恒温器内部的电引线热接触的冷热交换器。基本上所有路径在300K环境和4K负载温度之间，外部屏蔽截断了热量，该温度由液氦蒸发到大气。第二个35K处的内部辐射屏蔽体由液态氦池中的气态氦气冷却。低温恒温器中没有制冷系统的运动部件。因此，减小了磁场的振动，噪声和干扰。冰箱安装成本低，成本低; 相对于现有技术，功耗降低。

3. 发明授权

US6005461A Method and apparatus for connecting high current ramping leads to a superconducting magnet 失效
标题翻译：将高电流斜坡导线连接到超导磁体的方法和装置
公开(公告)号：US6005461A
公开(公告)日：1999-12-21
申请号：US99181
申请日：1998-06-18
申请人： F. Scott Murray , Ronald E. Hintz , Michael Frantsov , Leo Blecher , Philip A. Jonas
发明人： F. Scott Murray , Ronald E. Hintz , Michael Frantsov , Leo Blecher , Philip A. Jonas
IPC分类号： H01B12/00 , H01F6/06 , H01F1/00
CPC分类号： H01F6/065 , Y10S505/892
摘要： A superconducting magnet is accessible for ramping within a cryostat by inserting flexible current leads through openings in the cryostat and pushing and twisting these leads inward until connections are made with electrical contacts provided on the superconducting magnet. For each current lead, a permanently installed channel guides the lead as it is pushed through the external opening and extends to make contact with the magnet terminal. The guide channel extends outside of the cryostat and includes an internal or external bend, whereby the overhead space required for the cryostat/magnet assembly may be reduced. After ramping, the leads are withdrawn.
摘要翻译：超导磁体可通过将低温恒温器中的柔性电流引线插入低温恒温器中的开口，并将这些引线向内推和扭转，直到与超导磁体上提供的电触点连接。对于每个电流引线，永久安装的通道引导引线，因为它被推动穿过外部开口并延伸以与磁体端子接触。引导通道延伸到低温恒温器外部并且包括内部或外部弯曲部，从而可以减少低温恒温器/磁体组件所需的顶部空间。斜坡后，引线撤回。

4. 发明授权

US5332987A Large gap magnetic suspension system with superconducting coils 失效
标题翻译：具有超导线圈的大间隙磁悬浮系统
公开(公告)号：US5332987A
公开(公告)日：1994-07-26
申请号：US923328
申请日：1992-07-31
申请人： Michael J. Hennessy , Richard T. Woods , Hung B. Zou , Robert E. Wilcox , F. Scott Murray
发明人： Michael J. Hennessy , Richard T. Woods , Hung B. Zou , Robert E. Wilcox , F. Scott Murray
IPC分类号： H02N15/00 , H01F1/00 , H01H47/00 , H02K7/09
CPC分类号： H02N15/00
摘要： A magnetic suspension system and a procedure for operating the system employ a superconducting magnet having a lift coil assembly for developing a magnetic field to interact with the magnetic field of an object to be supported about the superconducting magnet. Smaller and larger magnet coils are provided in the superconducting magnet with counter rotating flow of current to introduce a depression in a potential energy surface above the superconducting magnet, this allowing the object to seek a height at the depression for stably locating the object. The system and methodology employs a set of control coils which are energized to orient and to translate the object to maintain a desired position and orientation. Pairs of the control coils are energized to produce a tilting of the object, as in roll or pitch, or a displacement of the object relative to the vertical axis.
摘要翻译：磁悬浮系统和用于操作该系统的程序采用具有提升线圈组件的超导磁体，用于显影磁场以与待超导磁体上待支撑物体的磁场相互作用。在超导磁体中设置较小和较大的磁体线圈，具有反向旋转的电流流动，以在超导磁体上方的势能表面上引入凹陷，这允许物体在凹陷处寻找高度以稳定地定位物体。系统和方法采用一组控制线圈，其被通电以定向和平移物体以保持期望的位置和取向。控制线圈的一对通电以产生物体的倾斜，如辊或节距，或物体相对于垂直轴的位移。

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