公开(公告)号：US5593949A

公开(公告)日：1997-01-14

申请号：US251211

申请日：1994-05-31

申请人： Eddie M. Leung ,  Kenneth R. Dawson

发明人： Eddie M. Leung ,  Kenneth R. Dawson

IPC分类号： G01F23/24 ,  H01L39/04

CPC分类号： G01F23/246 ,  G01F23/24 ,  Y10S505/842 ,  Y10S505/847

摘要： Method and arrangement for detecting the level of a liquid cryogen having a predetermined boiling point and which is being held in a container relative to the bottom of the container. The arrangement includes a container which receives the liquid cryogen and a longitudinal extending sensing member having a length extending from the bottom of the container to a level that is greater than any depth experienced for the liquid cryogen. The sensing member is vertically disposed in the container with one end in contact with the bottom of the container and the other end extending out of the liquid cryogen. The sensing member is composed of a high temperature superconductor material having a critical temperature that is higher than the predetermined boiling point of a selected cryogen. An electrical current is passed through the sensing member and the voltage drop across the sensing member is measured. The voltage drop is representative of the portion of the sensing member extending above the level of the liquid cryogen and thereby is indicative of the level of the liquid cryogen presently contained within the container.

摘要翻译： 用于检测具有预定沸点并且相对于容器底部保持在容器中的液体致冷剂的水平的方法和装置。 该装置包括容纳液体冷冻剂的容器和具有从容器底部延伸到比液体冷冻剂经历的任何深度大的水平的长度的纵向延伸的检测构件。 感测构件垂直地设置在容器中，其一端与容器的底部接触，另一端延伸出液体冷冻剂。 感测构件由具有高于所选冷冻剂的预定沸点的临界温度的高温超导体材料构成。 电流通过感测元件，测量感测元件上的电压降。 电压降代表了在液体冷冻剂水平面上方延伸的感测部件的部分，从而表示目前容纳在容器内的液体冷冻剂的水平。

公开(公告)号：US5423185A

公开(公告)日：1995-06-13

申请号：US87829

申请日：1993-07-06

申请人： Eddie M. Leung ,  David D. Madura

发明人： Eddie M. Leung ,  David D. Madura

IPC分类号： F17C13/00 ,  G02B5/08 ,  G05D23/19 ,  F25B19/00

CPC分类号： G02B5/0808 ,  G02B5/0816 ,  G02B5/0875 ,  G05D23/192 ,  Y10S505/888

摘要： Highly efficient reflective optical system that perfectly reflects incident electromagnetic radiation of a certain spectra and almost perfectly reflects radiation of another spectra. Incident electromagnetic radiation having a wavelength above a critical wavelength is relatively perfectly reflected. The critical wavelength is determined by the critical temperature of a high temperature superconductor material incorporated in the optical system. A preferred embodiment includes a cryogenically cooled substrate to which is applied a coating of a noble metal such as silver. A layer of a high temperature superconductor material is applied over the coating of noble metal. Since the critical wavelength of the incident radiation is inversely proportional to the critical temperature of the superconducting material, the use of high temperature superconductor material in the optical system provides a critical wavelength whereby certain spectra of an incident radiation is perfectly reflected. Since the effective emissivity of the optical system is very low for the same reason, the radiation heat transfer to cold objects (colder than the critical temperature of the superconductor) can be substantially decreased. Applications for such highly reflective optical systems provide for reducing radiation heat transfer for the tanks containing cryogens in space vehicles, for internal radiation shields for cryogenic dewars, as radiation insulation for lunar or orbiting space stations, to produce a thermal radiation shield for superconducting magnet systems, and as components in special purpose optical systems.

摘要翻译： 高效的反射光学系统完美地反映了一定光谱的入射电磁辐射，几乎完美地反映了另一光谱的辐射。 具有高于临界波长的波长的入射电磁辐射被相对完美地反射。 临界波长由结合在光学系统中的高温超导体材料的临界温度决定。 优选的实施方案包括低温冷却的基质，其上涂覆有贵金属如银的涂层。 将一层高温超导材料涂覆在贵金属涂层上。 由于入射辐射的临界波长与超导材料的临界温度成反比，所以在光学系统中使用高温超导体材料提供临界波长，从而完全反射入射辐射的某些光谱。 由于相同的原因，由于光学系统的有效发射率非常低，因此可以显着降低对冷物体的辐射热传递（比超导体的临界温度更低）。 对于这种高反射光学系统的应用提供了减少在空间车辆中含有冷冻剂的罐的辐射热传递，用于低温杜瓦瓶的内部辐射屏蔽，作为月球或轨道空间站的辐射绝缘，以产生用于超导磁体系统的热辐射屏蔽 ，作为专用光学系统的组件。

公开(公告)号：US5248657A

公开(公告)日：1993-09-28

申请号：US699035

申请日：1991-05-13

申请人： Richard E. Bailey ,  Foster M. Kimball ,  Eddie M. Leung ,  Robert D. McConnell

发明人： Richard E. Bailey ,  Foster M. Kimball ,  Eddie M. Leung ,  Robert D. McConnell

IPC分类号： H01L39/14 ,  H01L39/24

CPC分类号： H01L39/143 ,  H01L39/2464 ,  Y10S505/701 ,  Y10S505/704 ,  Y10S505/728 ,  Y10S505/73

摘要： A superconducting conductor assembly using high temperature materials. A double-walled tubular structure has at least one helical strip of superconductive material on the inner wall of the inside tube. Brittle, non-ductile superconducting materials may be used. A coolant, typically liquid nitrogen, is circulated between the tubes to maintain the superconductor below the critical temperature of the superconductor. A buffer layer is preferably included between tube wall and superconductor. A plurality of alternating layers of buffer and superconductor may be used.

摘要翻译： 使用高温材料的超导导体组件。 双壁管状结构在内管的内壁上具有至少一个超导材料的螺旋带。 可以使用脆性非延性超导材料。 冷却剂（通常为液氮）在管之间循环，以将超导体保持在超导体的临界温度以下。 缓冲层优选包括在管壁和超导体之间。 可以使用多个交替的缓冲层和超导体层。

公开(公告)号：US5217948A

公开(公告)日：1993-06-08

申请号：US779544

申请日：1991-10-18

申请人： Eddie M. Leung ,  Scott D. Peck

发明人： Eddie M. Leung ,  Scott D. Peck

IPC分类号： F41B6/00 ,  F42B6/00

CPC分类号： F41B6/00 ,  F42B6/006 ,  Y10S102/704

摘要： The device employs Hybrid Pulsed Transformer principles employing a projectile with an internal pay load. The projectile carries a light weight shorted secondary coil or coils constructed of aluminum and the projectile acts as a moving secondary through a plurality of aligned spaced apart transformer primary coils. The moving secondary coil includes a plurality of surrounding channels containing a liquid, such as water, for cooling. The cooling ability of certain liquids, as for example water, associated with change of state between liquid and gas is employed to cool the coil or coils.

摘要翻译： 该设备采用混合脉冲变压器原理，采用具有内部负载的抛射体。 射弹携带重量轻的次级线圈或由铝构成的线圈，并且射弹通过多个对准的间隔开的变压器初级线圈作为运动次级。 运动次级线圈包括多个包含液体的周围通道，例如水，用于冷却。 使用与液体和气体之间的状态变化相关联的某些液体（例如水）的冷却能力来冷却线圈或线圈。