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41. 发明授权

US5428292A Pancake MRI magnet with modified imaging volume 失效
标题翻译：具有改良成像体积的煎饼MRI磁体
公开(公告)号：US5428292A
公开(公告)日：1995-06-27
申请号：US237516
申请日：1994-04-29
申请人： Bizhan Dorri , Evangelos T. Laskaris
发明人： Bizhan Dorri , Evangelos T. Laskaris
IPC分类号： G01R33/3815 , A61B5/055 , G01R33/38 , G01R33/3875 , G01R33/421 , H01F7/20 , G01V3/00
CPC分类号： G01R33/3875 , G01R33/3806 , G01R33/3815 , G01R33/421
摘要： A pancake magnetic resonance imaging (MRI) magnet having a superconductive coil assembly including a toroidal-shaped coil housing containing a superconductive main coil set and a radially spaced-apart superconductive supplemental coil set. The main coil set includes a first main coil located radially towards the circumferential outside surface which faces away from the bore, and the supplemental coil set includes three radially spaced-apart supplemental coils located radially towards the circumferential outside surface which faces towards the bore. The first main coil and the middle supplemental coil each carry an equal electric current in a first direction while the other two supplemental coils each carry the same electric current in the opposite direction. Such coil arrangement produces an imaging volume longitudinally wider than the longitudinal thickness of the magnet. By adding a sufficient number of additional main coils and by longitudinally offsetting certain coils, the spherical imaging volume may be changed to a longitudinally offset ellipsoidal imaging volume. Such imaging volumes are better designed for breast imaging.
摘要翻译：一种具有超导线圈组件的薄煎饼磁共振成像（MRI）磁体，其包括含有超导主线圈组和径向隔开的超导辅助线圈组的环形线圈壳体。主线圈组包括径向地朝向圆周外表面的第一主线圈，其面向远离孔，并且辅助线圈组包括径向朝向朝向孔的周向外表面径向间隔开的补充线圈。第一主线圈和中间辅助线圈每个在第一方向上承载相等的电流，而另外的两个补充线圈每个在相反方向上承载相同的电流。这种线圈布置产生纵向宽于磁体纵向厚度的成像体积。通过添加足够数量的附加主线圈并且通过纵向偏移某些线圈，球形成像体积可以改变为纵向偏移的椭圆形成像体积。这样的成像体积更好地设计用于乳房成像。

42. 发明授权

US5410287A Open MRI magnet with uniform magnetic field 失效
标题翻译：打开具有均匀磁场的MRI磁体
公开(公告)号：US5410287A
公开(公告)日：1995-04-25
申请号：US223200
申请日：1994-04-05
申请人： Evangelos T. Laskaris , Bizhan Dorri
发明人： Evangelos T. Laskaris , Bizhan Dorri
IPC分类号： G01R33/3875 , A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/421 , H01F7/20 , H01F1/00 , G01V3/00 , H01F5/00
CPC分类号： G01R33/3806 , G01R33/3815 , G01R33/3875 , G01R33/421
摘要： An open magnetic resonance imaging (MRI) magnet having first and second spaced-apart superconductive coil assemblies each including a toroidal-shaped coil housing containing a superconductive main coil and a superconductive bucking coil. The bucking coil is spaced radially inward and radially apart from the main coil. The bucking coil carries an electric current equal in amperage, and opposite in direction, to the main coil. The bucking coils overcome the gross magnetic field distortions in the imaging volume of the main coils (created by the open space between the magnet's superconductive coil assemblies) to produce a magnetic field of high uniformity within the imaging volume.
摘要翻译：一种具有第一和第二间隔开的超导线圈组件的开放磁共振成像（MRI）磁体，每个超导线圈组件包括含有超导主线圈和超导电压线圈的环形线圈壳体。抗压线圈径向向内并与主线圈径向分开。抗压线圈以与安装在主线圈上的电流相等的方向传送电流。抵抗线圈克服了主线圈的成像体积（由磁体的超导线圈组件之间的开放空间产生）的总磁场失真，以在成像体积内产生高均匀性的磁场。

43. 发明授权

US5285181A Superconducting winding and support structure 失效
标题翻译：超导绕组和支撑结构
公开(公告)号：US5285181A
公开(公告)日：1994-02-08
申请号：US923682
申请日：1992-08-03
申请人： Evangelos T. Laskaris , Ahmed K. Kalafala
发明人： Evangelos T. Laskaris , Ahmed K. Kalafala
IPC分类号： H01F6/06 , H01F1/00
CPC分类号： H01F6/06
摘要： Composite superconducting windings of the type that have superconductor wires wound with glass cloth, an array of axial insulated copper wires, copper foil straps of expanded metal or perforated foil which are positioned between winding layers to reinforce the composite winding and enhance the thermal conductivity of the winding, and an overwrap of high strength stainless steel wires to provide additional rigidity to the composite winding. Structures of this type, generally, form a self-supported, structurally robust composite winding and support structure that is capable of withstanding the hoop and axial stresses that result from the electromagnetic loads created by the superconductor.
摘要翻译：具有用玻璃布缠绕的超导体线的类型的复合超导绕组，轴向绝缘铜线阵列，多孔金属或穿孔箔的铜箔带，位于绕组层之间以加强复合绕组并增强复合绕组的热导率缠绕和高强度不锈钢丝的外包装，为复合绕组提供额外的刚性。这种类型的结构通常形成自支撑结构坚固的复合绕组和支撑结构，其能够承受由超导体产生的电磁负载引起的环向和轴向应力。

44. 发明授权

US5260266A High-TC superconducting lead assembly in a cryostat dual penetration for refrigerated superconductive magnets 失效
标题翻译：高TC超导导线组件，用于冷冻超导磁体的低温恒湿双重穿透
公开(公告)号：US5260266A
公开(公告)日：1993-11-09
申请号：US833194
申请日：1992-02-10
申请人： Kenneth G. Herd , Evangelos T. Laskaris
发明人： Kenneth G. Herd , Evangelos T. Laskaris
IPC分类号： F17C13/00 , H01F6/06 , H01B12/00 , H01L39/12
CPC分类号： H01F6/065 , Y10S505/78 , Y10S505/891
摘要： This invention relates to high-Tc superconducting lead assemblies in a cryostat dual penetration for refrigerated superconductive magnets. Such structures of this type, generally, provide electrically isolated current paths with minimal heat leak between the 10K thermal station and the 50K thermal station while allowing for differential thermal contraction in the assembly, thus avoiding undesirable stresses in the leads.
摘要翻译：本发明涉及用于冷冻超导磁体的低温恒温双重穿透中的高Tc超导引线组件。这种类型的这种结构通常提供电隔离的电流路径，在10K加热站和50K加热站之间具有最小的热泄漏，同时允许组件中的差异热收缩，从而避免引线中的不期望的应力。

45. 发明授权

US5257915A Oil free linear motor compressor 失效
标题翻译：无油直线电机压缩机
公开(公告)号：US5257915A
公开(公告)日：1993-11-02
申请号：US863603
申请日：1992-04-03
申请人： Evangelos T. Laskaris , Robert A. Ackermann
发明人： Evangelos T. Laskaris , Robert A. Ackermann
IPC分类号： F04B35/04 , F04B39/00 , F04B39/02 , F04B39/04 , H02K33/18 , F04B17/04
CPC分类号： F04B39/04 , F04B35/045 , F04B39/0005 , H02K33/18
摘要： This invention relates to linear motor compressors which operate without the use of oil. Such structures of this type, generally, provide a highly reliable oil-free compressor for use with cryogenic refrigeration equipment so as to attain unattended, continuous operation without maintenance over extended periods of time.
摘要翻译：本发明涉及在不使用油的情况下工作的线性电动机压缩机。这种类型的这种结构一般提供了一种用于低温制冷设备的高可靠性无油压缩机，以便在长时间不维护的情况下实现无人值守的连续操作。

46. 发明授权

US5225782A Eddy current free MRI magnet with integrated gradient coils 失效
标题翻译：具有积分梯度线圈的涡流无磁共振磁铁
公开(公告)号：US5225782A
公开(公告)日：1993-07-06
申请号：US759389
申请日：1991-09-13
申请人： Evangelos T. Laskaris , Peter B. Roemer , Bizhan Dorri , Mark E. Vermilyea
发明人： Evangelos T. Laskaris , Peter B. Roemer , Bizhan Dorri , Mark E. Vermilyea
IPC分类号： G01R33/3815 , G01R33/385 , G01R33/421
CPC分类号： G01R33/3815 , G01R33/385 , G01R33/421
摘要： This invention relates to refrigerated superconducting eddy current free MR magnets having integrated gradient coils. In particular, the amount of resultant eddy currents produced by the magnet are substantially reduced while reducing the size and weight, and, therefore, the cost of the superconducting magnet required to produce an acceptable MR image.
摘要翻译：本发明涉及具有积分梯度线圈的冷冻超导无涡流MR磁体。特别地，由磁体产生的涡流的量大大降低，同时减小了尺寸和重量，并因此降低了产生可接受的MR图像所需的超导磁体的成本。

47. 发明授权

US5222366A Thermal busbar assembly in a cryostat dual penetration for refrigerated superconductive magnets 失效
标题翻译：热母线组件在冷冻超导磁体的低温恒湿器双穿透中
公开(公告)号：US5222366A
公开(公告)日：1993-06-29
申请号：US833225
申请日：1992-02-10
申请人： Kenneth G. Herd , Evangelos T. Laskaris
发明人： Kenneth G. Herd , Evangelos T. Laskaris
IPC分类号： F17C13/00 , F25D19/00
CPC分类号： F25D19/006 , H01F6/04 , Y10S505/892
摘要： This invention relates to thermal busbar assemblies in a cryostat dual penetration for refrigerated superconductive magnets. Such structures of this type, generally, allow heat to be conducted from the refrigerated superconductive magnet to the refrigeration cold head while isolating the magnet from the vibration created by the cold head.
摘要翻译：本发明涉及用于冷冻超导磁体的低温恒温双重穿透中的热母线组件。这种类型的这种结构通常允许热量从冷藏的超导磁体传导到制冷冷头，同时将磁体与冷头产生的振动隔离。

48. 发明授权

US5216889A Cold head mounting assembly in a cryostat dual penetration for refrigerated superconductive magnets 失效
标题翻译：冷头安装组件在冷冻超导磁体的低温恒湿器双穿透中
公开(公告)号：US5216889A
公开(公告)日：1993-06-08
申请号：US833195
申请日：1992-02-10
申请人： Kenneth G. Herd , Evangelos T. Laskaris
发明人： Kenneth G. Herd , Evangelos T. Laskaris
IPC分类号： F17C13/00 , F25D19/00
CPC分类号： F25D19/006 , H01F6/04 , Y10S505/892
摘要： This invention relates to cold head mounting assemblies in a cryostat dual penetration for refrigerated superconductive magnets. Such structures of this type, generally, allow heat to be conducted from the refrigerated superconductive magnet to the refrigeration cold head while isolating the magnet from the vibration created by the cold head.
摘要翻译：本发明涉及用于冷冻超导磁体的低温恒温双重穿透中的冷头安装组件。这种类型的这种结构通常允许热量从冷藏的超导磁体传导到制冷冷头，同时将磁体与冷头产生的振动隔离。

49. 发明授权

US5047741A Epoxy-impregnated superconductive tape coils 失效
标题翻译：环氧浸渍超导带卷
公开(公告)号：US5047741A
公开(公告)日：1991-09-10
申请号：US395635
申请日：1989-08-17
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： H01F6/04 , H01F6/06
CPC分类号： H01F6/06
摘要： A superconductive foil and a first and second foil of current conducting material. The first and second foil are soldered symmetrically about said superconductive foil forming a superconductive tape. The tape is wound in helical layers forming a coil. Adjacent turns of the tape are electrically insulated from one another. A strip of electrically conductive foil is situated between layers of tape and electrically isolated therefrom. The strip of electrically conductive foil encloses the inner layers of the tape, with the ends of the strip joined together to form an electrically conductive loop. The coil is epoxy resin impregnated.

50. 发明授权

US4682134A Conical, unimpregnated winding for MR magnets 失效
标题翻译：圆锥形，未浸渍的MR磁体绕组
公开(公告)号：US4682134A
公开(公告)日：1987-07-21
申请号：US740921
申请日：1985-06-03
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： G01R33/381 , A61B5/055 , A61B10/00 , G01R33/20 , H01F6/00 , H01F6/06 , H01F7/22
CPC分类号： H01F6/00 , G01R33/381 , H01F6/06 , Y10S336/01 , Y10S505/879
摘要： An unimpregnated winding for use in a cryostat of a superconducting magnet is provided comprising a form including a shell having the shape of two truncated cones attached to one another at their respective bases. Superconducting wire is wrapped around the form under tension so that during superconducting magnet operation, the form remains under compression.
摘要翻译：提供用于超导磁体的低温恒温器的未浸渍的绕组，其包括包括在其各自的基部处彼此附接的具有两个截头圆锥形状的壳体的形式。超导线材在张力下缠绕形式，使得在超导磁体操作期间，该形式保持在压缩状态。

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