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61. 发明授权

US5111172A Demountable coil form for epoxy-impregnated coils 失效
标题翻译：环氧树脂线圈的可拆卸线圈形式
公开(公告)号：US5111172A
公开(公告)日：1992-05-05
申请号：US395634
申请日：1989-08-17
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： H01F5/06 , H01F6/06 , H01F41/04 , H01F41/06 , H01F41/12
CPC分类号： H01F6/06 , H01F41/04
摘要： A demountable coil form for fabricating epoxy impregnated superconductive coils having a split ring and a collar clamp secured to the ring on either side of an axially extending opening for adjusting the size of the ring opening. The axially extending opening is widest at its inner diameter and tapers towards the outer diameter of the ring. Cap screws in contact with a wedge and connected to the ring are provided for securing the wedge in the opening in the ring. The wedge has a taper matching the taper of the opening in the ring and is positioned flush with the outer diameter of the ring. Annular side plates are secured to either axial side of the ring, with the side plates extending radially outwardly from the ring. The side plates define slots which create a passageway from the exterior of the side plates to the interior.

62. 发明授权

US5032869A Axial thermal shield support for a MR magnet 失效
标题翻译：用于MR磁铁的轴向热屏蔽支架
公开(公告)号：US5032869A
公开(公告)日：1991-07-16
申请号：US505631
申请日：1990-04-06
申请人： Kenneth G. Herd , Evangelos T. Laskaris , Mark E. Vermilyea
发明人： Kenneth G. Herd , Evangelos T. Laskaris , Mark E. Vermilyea
IPC分类号： H01F7/20 , F17C13/00 , G01R33/3815 , H01F6/00 , H01F6/04
CPC分类号： G01R33/3815
摘要： Two pair of thermal shield axial supports are provided. Each support includes a strand of wire brazed on either end into threaded studs. One stud is threaded into a topped hole in the end of the magnet cartridge. The stud on the other end extends through a clearance hole on the end flange of the thermal shield. Belleville spring washers are compressed against the shield by a nut. Prior to cool down, the Belleville washers are compressed. As the shield and magnet cool down, the shield contracts axially with respect to the magnet cartridge, thus relaxing the washer stack compression. The wire tension relaxes from the maximum pretension to a nominal tension at operating temperature.

63. 发明授权

US4614393A Retractable lead system for operation at cryogenic temperatures 失效
标题翻译：可伸缩的铅系统，用于在低温运行
公开(公告)号：US4614393A
公开(公告)日：1986-09-30
申请号：US621330
申请日：1984-06-15
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： H01R4/50 , A61B5/055 , A61B10/00 , G01R33/3815 , H01F6/00 , H01R4/68 , H01R13/193 , H01R13/629 , H01R4/24
CPC分类号： H01R13/193 , H01R13/629 , H01R4/68 , Y10S439/931
摘要： A split ring clamp having a hard, serrated interior surface is urged against an electrically conductive lead by means of a pivoting cam lever. The conductive lead includes a metal coating which is relatively soft at cryogenic temperatures. This arrangement avoids the problem of frost buildup and undesirable resistive heating effects in the powering of superconducting electromagnets disposed within a cryostat, particularly a cryostat containing liquid helium as a cooling fluid.
摘要翻译：具有硬的锯齿形内表面的开口环夹具借助于枢转的凸轮杆被推靠在导电引线上。导电引线包括在低温下相对较软的金属涂层。这种布置避免了在设置在低温恒温器，特别是含有液氦作为冷却流体的低温恒温器的超导电磁体的供电中产生结霜和不期望的电阻加热效应的问题。

64. 发明授权

US4535596A Plug for horizontal cryostat penetration 失效
标题翻译：插头用于水平低温恒温器穿透
公开(公告)号：US4535596A
公开(公告)日：1985-08-20
申请号：US595200
申请日：1984-03-30
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： A61B10/00 , A61B5/055 , F17C3/08 , G01R33/3815 , F17C1/00
CPC分类号： F17C3/085 , F17C2203/0687 , F17C2270/0536 , Y10S505/892
摘要： A plug for a horizontal cryostat penetration comprises a plurality of nested housings with thermal insulation disposed between the housings. Each housing has a tubular extension which is heat stationable to portions of the cryostat penetration, the more inner the housing, the colder being the portion to which it is stationed. The innermost and outermost housings each possess pressure relief means for relieving internal pressure buildup which occurs as a result of magnet quench or vacuum loss. In operation the plug is disposed within the cryostat penetration and in particular, typically within a tubular conduit associated therewith. The tubular extension of the outermost housing also has preferably disposed around its exterior, one or more string-shaped helically disposed lengths of sealing material. Accordingly, when the plug is placed within the penetration, a helical coolant vapor path is formed for plug cooling and exterior ventilation.
摘要翻译：用于水平低温恒温器穿透的插头包括设置在壳体之间的多个具有热绝缘的嵌套壳体。每个壳体具有管状延伸部，该管状延伸部分可加热固定到低温恒温器穿透部分，壳体越内侧，较冷的部分是其驻扎的部分。最内侧和最外侧的外壳都具有减压装置，用于减轻由于磁体淬火或真空损失而产生的内部压力积聚。在操作中，插头设置在低温恒温器穿透部内，特别是通常在与其相关联的管状导管内。最外壳的管状延伸部也优选地围绕其外部设置，一个或多个螺旋形的螺旋设置的密封材料长度。因此，当插头被放置在穿透部内时，形成用于插头冷却和外部通风的螺旋式冷却剂蒸气路径。

65. 发明授权

US4522034A Horizontal cryostat penetration insert and assembly 失效
标题翻译：水平低温恒温器插入和组装
公开(公告)号：US4522034A
公开(公告)日：1985-06-11
申请号：US595199
申请日：1984-03-30
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： A61B10/00 , A61B5/055 , F17C3/08 , G01R33/3815 , F17C1/00
CPC分类号： F17C3/085 , F17C2203/0687 , F17C2221/017 , F17C2270/0536 , Y10S505/892
摘要： An insert for a horizontal cryostat penetration comprises a plurality of foam plugs between which are disposed patches of copper or aluminum foil. The plugs and foil are disposed in a tubular conduit comprising thin wall, low thermal conductivity material. This plug provides thermal insulation and significantly reduces the formation of convection currents in the penetration which would otherwise significantly increase the rate of coolant evaporation. The insert assembly described is designed to be ejected from the penetration upon the build up of excessive internal pressure. The insert is also preferably disposed within another tubular conduit around the exterior of which there is disposed one or more string-shaped helically disposed lengths of sealing material. Accordingly, when this assembly is inserted within a third conduit, a helical coolant vapor path is formed for exterior venting.
摘要翻译：用于水平低温恒温器穿透的插入件包括多个泡沫塞，其间设置有铜或铝箔的贴片。塞子和箔片设置在包括薄壁，低热导率材料的管状导管中。该插头提供热绝缘，并显着减少渗透中对流的形成，否则会显着增加冷却剂蒸发速率。所描述的插入组件设计成在过度内压的累积时从穿透中弹出。插入件还优选地设置在围绕其外部的另一管状导管内，其设置有一个或多个螺旋形螺旋设置的密封材料的长度。因此，当该组件插入在第三导管内时，形成用于外部排气的螺旋形冷却剂蒸气路径。

66. 发明授权

US4492090A Cryostat for NMR magnet 失效
标题翻译：用于NMR磁铁的低温恒温器
公开(公告)号：US4492090A
公开(公告)日：1985-01-08
申请号：US533336
申请日：1983-09-19
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： A61B10/00 , A61B5/055 , F17C13/08 , G01R33/3815 , H01F6/00 , H01F6/04 , H01L39/04 , F17C7/02
CPC分类号： F17C13/087 , F17C2203/016 , F17C2203/0687 , F17C2270/0536 , Y10S285/904 , Y10S505/898
摘要： A cryostat which is particularly useful for containing superconducting windings for a magnet to provide high strength magnetic fields for NMR imaging comprises a set of nested annular vessels in a suspension system which permits transport of the cryostat and magnet assembly with vacuum conditions intact. In particular, sets of transverse ties linking certain vessels to the next adjacent outer vessel are employed to prevent transverse motion of the cryostat assembly. Furthermore, during transport, a system of pins is employed to prevent axial motion, while at the same time minimizing thermal conductivity. During transport, the inner annular assemblies are locked in a fixed axial position which permits transport of the cryostat in a vertical position. A system of the present invention is therefore seen to satisfy the competing requirements for a strong internal support system for transport, but yet at the same time provides a suspension system which does not significantly impair the thermal insulation requirements of good cryostat design.
摘要翻译：特别适用于包含用于磁体的超导绕组以提供用于NMR成像的高强度磁场的低温恒温器包括在悬挂系统中的一组嵌套的环形容器，其允许低密度和磁体组件在真空条件下完好地运输。特别地，采用将某些容器连接到下一个相邻外部容器的一组横向连接件来防止低温恒温器组件的横向运动。此外，在运输过程中，采用一种销钉系统来防止轴向运动，同时最小化导热性。在运输期间，内部环形组件被锁定在固定的轴向位置，这允许低温恒温器在垂直位置运输。因此，本发明的系统可以满足用于运输的强大的内部支撑系统的竞争性要求，但是同时提供了不会显着损害良好的低温恒温器设计的隔热要求的悬架系统。

67. 发明授权

US4082967A Uniformly-cooled superconducting rotor 失效
标题翻译：均匀冷却超导转子
公开(公告)号：US4082967A
公开(公告)日：1978-04-04
申请号：US672272
申请日：1976-03-31
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： H02K9/20 , H02K55/04 , H02K1/32
CPC分类号： H02K55/04 , H02K9/20 , Y02E40/625 , Y10S505/878
摘要： A superconducting rotor for an electrical machine is divided into three chambers, each of the two outer chambers being encircled by thermal distance extensions. Excess cryogenic coolant vapor due to coolant pool boiling in the center chamber of the rotor is released to a circumferential heat exchanger of larger diameter than the thermal distance extensions, warmed therein to ambient temperature, and returned to be reliquefied, thus avoiding thermal distance extension overcooling and attendant adverse mechanical consequences.

68. 发明授权

US3991588A Cryogenic fluid transfer joint employing a stepped bayonet relative-motion gap 失效
标题翻译：采用步进式卡口相对运动间隙的低温流体输送接头
公开(公告)号：US3991588A
公开(公告)日：1976-11-16
申请号：US573169
申请日：1975-04-30
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： F16L59/065 , F16L59/18 , F17C13/00 , H02K55/04 , F17C7/02
CPC分类号： F16L59/185 , F16J15/43 , F16J15/441 , F16L59/065 , H01F6/04 , H02K55/04 , Y02E40/625 , Y10S285/904 , Y10S505/897
摘要： Cryogenic liquid coolant is transferred from a stationary liquefier through a bayonet to a conduit rotating with the rotor of a superconducting generator, using a cryogenic fluid transfer joint attached to the collector end of the rotor. A relative-motion gap about the bayonet has its inner and outer diameters reduced in size near the outlet end of the bayonet. The gap thus stepped downward in size extends into a core of boil-off coolant within the rotating conduit, preventing liquid coolant centrifugally forced against the inside of the conduit from entering the gap, and allowing only boil-off coolant to enter.
摘要翻译：低温液体冷却剂通过连接到转子收集端的低温流体传递接头从静止液化器通过卡口转移到与超导发生器的转子一起旋转的导管。围绕卡口的相对运动间隙的内径和外径在卡口的出口端附近的尺寸减小。因此，尺寸向下延伸的间隙延伸到旋转管道内的蒸发冷却剂芯体中，防止离心力地压迫导管内部的液体冷却剂进入间隙，并且仅允许冷却剂冷却剂进入。

69. 发明授权

US3991333A Winding support structure for superconducting rotor 失效
标题翻译：超导转子绕组支撑结构
公开(公告)号：US3991333A
公开(公告)日：1976-11-09
申请号：US606177
申请日：1975-08-20
申请人： Evangelos T. Laskaris
发明人： Evangelos T. Laskaris
IPC分类号： H02K3/46 , H02K55/04 , H02K9/00
CPC分类号： H02K55/04 , H02K3/46 , Y02E40/625
摘要： Rigid support for the rotor winding of a superconductive A.C. generator is achieved by combining a plurality of modular racetrack-shaped sections to form the winding. Each section is separately supported to withstand the centrifugal forces and load forces on the winding during operation. The windings and support members are machined in close tolerance, and the support member material is selected so that differential thermal contraction during cooldown results in an interference fit and compression at the winding-support interface.
摘要翻译：通过组合多个模块化跑道形截面来形成绕组，实现了对超导交直流发电机的转子绕组的刚性支撑。每个部分分别支撑，以在运行过程中承受绕组上的离心力和负载力。绕组和支撑构件被紧密公差地加工，并且选择支撑构件材料，使得在冷却期间的差别热收缩导致绕组支撑界面处的过盈配合和压缩。

70. 发明授权

US5552211A Ceramic superconducting lead resistant to breakage 失效
标题翻译：陶瓷超导导线耐破坏
公开(公告)号：US5552211A
公开(公告)日：1996-09-03
申请号：US440159
申请日：1995-05-12
申请人： Robert A. Ackermann , Kenneth G. Herd , Evangelos T. Laskaris , Richard A. Ranze
发明人： Robert A. Ackermann , Kenneth G. Herd , Evangelos T. Laskaris , Richard A. Ranze
IPC分类号： B32B5/22 , F17C13/00 , F25D19/00 , G01R33/3815 , H01F6/06 , B32B9/00
CPC分类号： B32B5/22 , F25D19/006 , G01R33/3815 , H01F6/04 , H01F6/065 , Y10S428/93 , Y10S505/701 , Y10T428/24917 , Y10T428/249951 , Y10T428/2929 , Y10T428/2958
摘要： A superconductive lead assembly for a superconductive device (e.g., magnet) cooled by a cryocooler coldhead having first and second stages. A first ceramic superconductive lead has a first end flexibly, dielectrically, and thermally connected to the first stage and a second end flexibly, dielectrically, and thermally connected to the second stage. A jacket of open cell material (e.g., polystyrene foam) is in general surrounding compressive contact with the first ceramic superconductive lead, and a rigid support tube generally surrounds the jacket. This protects the first ceramic superconductive lead against shock and vibration while in the device. The rigid support tube has a first end and a second end, with the second end thermally connectable to the second stage.
摘要翻译：一种用于超导装置（例如，磁体）的超导引线组件，其由具有第一和第二级的低温冷却器冷头冷却。第一陶瓷超导引线具有柔性，介电和热连接到第一级的第一端，以及柔性地，介电地且热连接到第二级的第二端。开孔材料（例如，聚苯乙烯泡沫）的夹套通常围绕与第一陶瓷超导导线的压力接触，并且刚性支撑管通常围绕护套。这样可以保护第一个陶瓷超导导线免受器件中的冲击和振动。刚性支撑管具有第一端和第二端，第二端与第二级热连接。

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