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41. 发明专利

JPS63281318A MANUFACTURE OF COMPOUND SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPS63281318A
公开(公告)日：1988-11-17
申请号：JP11535587
申请日：1987-05-12
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , YAMADA MINORU , SHIRAKI KAZUO , MURASE AKIRA , FUKUSHIMA SHIN , NIBU HIROMI , YOSHINO HISASHI
IPC分类号： B28B1/00 , C01G1/00 , C04B35/00 , C04B35/45 , H01B12/04 , H01B13/00
摘要： PURPOSE:To obtain an oxide compound superconductive wire capable of constituting an electric circuit element with a complex shape by providing an insulating ceramic layer on the outer face of a wire rod formed by face reduction- machining the whole covering tube linearly, forming oxygen gas passages penetrating the ceramic layer, and heat-treating this wire rod in the oxygen gas atmosphere. CONSTITUTION:A mixture of multiple kinds of powder including elements capable of synthesizing an oxide compound superconductor is stored in a covering tube made of copper, silver, or silver alloy, the whole covering tube is face reduction-machined linearly, an insulating ceramic layer is provided on the outer face of the wire rod thus formed, and practically multiple oxygen gas passages penetrating the ceramic layer are formed. This wire rod is heat-treated in the oxygen gas atmosphere. In this case, if the wire rod is heat-treated after it is formed into the shape of a desired electric circuit element, e.g., coil shape, no crack or distortion occurs on a compound superconductive layer thus formed.

42. 发明专利

JPS63230526A COMPOUND SUPERCONDUCTOR AND PRODUCTION THEREOF 失效
公开(公告)号：JPS63230526A
公开(公告)日：1988-09-27
申请号：JP6328087
申请日：1987-03-18
申请人： FUEKI KAZUO , TOSHIBA CORP
发明人： FUEKI KAZUO , MURASE AKIRA , YAMADA MINORU , YOSHINO HISASHI
IPC分类号： H01L39/12 , C01G1/00 , C01G3/00 , H01B12/00 , H01B13/00 , H01L39/24
摘要： PURPOSE:To obtain a compound superconductor capable of being cooled with inexpensive and readily handleable liquid N2, consisting of Yb and/or Lu, Ba, Cu and O. CONSTITUTION:The compound superconductor of this invention consists of the above-mentioned elements and has the composition ratio of Yb and/or Lu and Ba of 30:70-70:30, preferably 40:60-55/45. The superconductor is produced by the following method. Namely, powder of Yb2O3 and/or Lu2O3 is blended with powder of BaCO3 and powder of CuO in a given ratio. Then the mixture is calcined in air at 800-900 deg.C, ground, cold-pressed and further sintered in air at 800-940 deg.C. Consequently, the aimed compound superconductor of oxide type having a critical temperature Tc higher than liquid N2 temperature (77k) is obtained.

43. 发明专利

JPS63180797A REFRIGERANT DISCHARGE DEVICE 失效
公开(公告)号：JPS63180797A
公开(公告)日：1988-07-25
申请号：JP825187
申请日：1987-01-19
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , SATO AKIO , MURASE AKIRA
IPC分类号： F17C5/04 , F17C9/00 , F25B45/00 , F25D3/10
摘要： PURPOSE:To make refrigerant discharge complete, by forming the tip of a discharge pipe adapted to feed the refrigerant in a cryostat and discharge the refrigerant from it, of a coil spring and an expansible pipe, and making it possible to regulate the length of this pipe by the coil spring. CONSTITUTION:The tip 11 of a pipe is formed of a coil spring 12 and a temperature element 15. A pipe 13 adapted to discharge liquid nitrogen, is set inside the coil spring 12. The length l1 of this pipe 13 can be varied by the coil spring 12. For example, if the bottom A of a cryostat is higher for l2, the position of the tip of the pipe 13 can be varied by the coil spring 12. In this way, an inlet/outlet port 10 for liquid nitrogen formed at the tip, is closely contacted with the bottom by the pressure of the spring, and liquid nitrogen can be discharged completely.

44. 发明专利

JPS63114934A COMPOSITE SUPERCONDUCTIVE MATERIAL 失效
公开(公告)号：JPS63114934A
公开(公告)日：1988-05-19
申请号：JP25977386
申请日：1986-10-31
申请人： MATSUI MASAAKI , KIDO YOSHIO , HASEGAWA TADASHI , TOSHIBA CORP
发明人： MATSUI MASAAKI , KIDO YOSHIO , HASEGAWA TADASHI , MURASE AKIRA
IPC分类号： H01L39/12 , C22C27/02 , H01B12/00
摘要： PURPOSE:To improve the upper critical magnetic field by specifying the composition of an A15-type compound superconductive material consisting of Nb, Ga, and Sb. CONSTITUTION:In the A15-type composite superconductive material having a composition represented by a formula, the value of (x) in the formula in regulated to 0.02-0.22. This composite superconductive material has remarkably improved upper critical magnetic field Hc2 as high as >=40T and shows extremely superior superconductivity. Accordingly, the A15-type composite superconductive material applicable to a magnetic field as high as >=20T hitherto considered to be difficult can be provided.

45. 发明专利

JPS634505A MANUFACTURE OF COMPOUND SUPERCONDUCTOR 失效
公开(公告)号：JPS634505A
公开(公告)日：1988-01-09
申请号：JP14703686
申请日：1986-06-25
申请人： NAT RES INST METALS , TOSHIBA CORP
发明人： TACHIKAWA KYOJI , TOGANO KAZUMASA , KUMAKURA HIROAKI , YAMADA MINORU , MURASE AKIRA , SASAKI MITSUO , NAKAMURA SUGURU
IPC分类号： C01B21/06 , C01B21/082 , H01B12/04 , H01B13/00 , H01L39/12

46. 发明专利

JPS62160608A COMPOUND SUPERCONDUCTOR 失效
公开(公告)号：JPS62160608A
公开(公告)日：1987-07-16
申请号：JP248686
申请日：1986-01-09
申请人： TOSHIBA CORP
发明人： SHIRAKI KAZUO , MURASE AKIRA
IPC分类号： H01B12/10 , H01B12/02

47. 发明专利

JPS62109798A AUTOMATIC SUPPLY SYSTEM OF LIQUID HELIUM 失效
公开(公告)号：JPS62109798A
公开(公告)日：1987-05-20
申请号：JP24041785
申请日：1985-10-29
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , KAWAKAMI OSAMU , MURASE AKIRA
IPC分类号： B67D99/00

48. 发明专利

JPS6281578A APPARATUS FOR MEASURING CRITICAL CURRENT 失效
公开(公告)号：JPS6281578A
公开(公告)日：1987-04-15
申请号：JP22176985
申请日：1985-10-07
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , MURASE AKIRA , OHASHI YOSHIO
IPC分类号： G01R31/00
摘要： PURPOSE:To conserve the time and labor required in the measurement of the critical currents of a large number of superconductive wires, by simultaneously and automatically changing over a voltage terminal and a current terminal when the critical currents of a large number of superconductive wires are measured by a four-terminal method. CONSTITUTION:A measuring apparatus consists of a disk 10 equipped with no-fuse breakers 12-14 and an operation disk 21 and has constitution connecting voltage terminals 2A-2C of superconductive wires SA, SB, SC tested to current terminals ST1-ST3. When the switch S2 of the operation disk 21 is turned ON before the critical current IC of the superconductive wire SA is measured, a motor 15 is operated and a no-fuse breaker 14 is turned ON and said wire SA is brought to a state capable of supplying a current. Next, the voltage terminal 2A is automatically connected to the connection terminal 2D of an XY recorder 2 through a relay by the switch S2. By using the relay, voltage applied to the motor of the no-fuse breaker is prevented from applying to the superconductive wire SA.

49. 发明专利

JPS61290370A CRITICAL CURRENT MEASURING INSTRUMENT FOR SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPS61290370A
公开(公告)日：1986-12-20
申请号：JP13091385
申请日：1985-06-18
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , MURASE AKIRA
IPC分类号： H01L39/00 , G01R31/00 , H01B13/00
摘要： PURPOSE:To facilitate the decision of a critical current value by constructing such that the junction between a current terminal and a superconductive wire to be measured is made the whole circumferential surface of the superconductive wire and a current is concentrated in the superconductive wire to be measured from the current terminal or flowed out only from the superconductive wire to be measured. CONSTITUTION:A superconductive wire 4 and current terminals 15 have structures just as pencils and are constructed such that a current flowing in the current terminals 15 is concentratedly flowed out through the superconductive wire 4. Holes 16 formed in the current terminals in a longitudinal direction have such a structure that the superconductive wire 4 is inserted in the holes 16. After the wire 4 is inserted, the contact between the superconductive wire 4 and the current terminals 15 are made further closer by a solder. Further, the current terminals 15 are formed to have such a structure that the superconductive wire 4 is projected from one end of each current terminal 15. The combination of the current terminals and the superconductive wire with such structures enables the decision of a critical current value to be facilitated.

50. 发明专利

JPS61290284A SOLENOID VALVE FOR DOUBLE PIPE 失效
公开(公告)号：JPS61290284A
公开(公告)日：1986-12-20
申请号：JP13091885
申请日：1985-06-18
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , MURASE AKIRA
IPC分类号： F16K31/06 , H01L39/04
摘要： PURPOSE:To get a solenoid valve for a double pipe capable of performing opening/closing of a valve with ON/OFF of an electromagnet by providing a permanent magnet or an induced magnetic material on one end of a valve after providing a vacuum insulation vessel between the solenoid valve and said valve. CONSTITUTION:A vacuum insulation vessel 27 is provided between a valve controlling a fluid and an electromagnet 29 and a material, for instance an iron, being attracted by a permanent magnet 32 or a magnet provided on one end of the valve. The valve is usually closed at its passage for a fluid by a spring. Turning on electricity to the electromagnet 29 makes the valve to open by the use of repulsion between the permanent magnet 32 and the electromagnet 29, so as to allow the fluid to flow toward a cryostat side. When a current flowing through the electromagnet 29 is turned off in the condition that a fluid helium is flowing, the magnetism of the electromagnet 29 disappears and a repulsive force against the permanent magnet 32 or a sucking force between the electromagnet 29 and the iron attached to the valve disappears and the reaction of a spring disappears owing to the magnet, therefore the valve closes the passage for a fluid helium refrigerant.

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