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82. 发明专利

JPH04233114A SUPERCONDUCTIVE SWITCH FOR CONDUCTION COOLING SYSTEM SUPERCONDUCTIVE MAGNET 失效
公开(公告)号：JPH04233114A
公开(公告)日：1992-08-21
申请号：JP21050291
申请日：1991-07-29
申请人： GEN ELECTRIC
发明人： BIZUHAN DORI , EBANGEROSU TORIFUON RASUKARISU
IPC分类号： H01F6/04 , H01F6/00 , H01H37/00 , H01H37/32
摘要： PURPOSE: To provide a superconducting switch for a conduction cooling type superconducting magnet which is stable for a long time in a magnetic field. CONSTITUTION: Two niobium-tin tapes 13 stacked with a stainless steel foil are wound on a winding frame in order to give structural stiffness to a superconducting switch 11 for a superconducting magnet. The superconducting switch is impregnated with an epoxy resin under reduced pressure, and cooled with copper bus bars 37, 39, 71, 73 thermally connected to a cryogenic cooling unit used for conduction-cooling the superconducting magnet. The bus bars are also used to apply voltage to both ends of lead wires 41, 43 of the switch connected in series to excite the superconducting magnet and that of a magnet winding wire 61.

84. 发明专利

JPH04181624A MAGNETIC AND THERMAL SWITCHING DEVICE 失效
公开(公告)号：JPH04181624A
公开(公告)日：1992-06-29
申请号：JP30905990
申请日：1990-11-15
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ASAI MASATO , OGURI AKIHIRO
IPC分类号： H01H37/32 , H01H1/66
摘要： PURPOSE:To miniaturize a device with an electromagnetic switching mechanism and a temperature sensor mechanism integrated by forming the movable contact piece of an electric contact with a ferromagnetic material, and covering a periphery of the movable contact piece, except its contact part and its vicinity, with a shape-memory resin. CONSTITUTION:The periphery of a conductive movable contact piece 1 composed of a ferromagnetic body, except a contact part and its vicinity, is covered with a shape-memory resin 2, and the contact piece 1 is fitted to a protection frame 4 to form a switching device. With this device, the contact piece 1 is opened/closed by a magnetic action from outside to make switching, and also is actuated by ambient temperature by the shape-memory characteristic of the resin 2 for temperature variation. This can integrate an electromagnetic switching mechanism and a temperature sensor mechanism with a thermostat, etc., and can miniaturize a device and improve the performance of the device.

85. 发明专利

JPH04167321A THERMALLY-ACTUATED SWITCH 失效
公开(公告)号：JPH04167321A
公开(公告)日：1992-06-15
申请号：JP29086390
申请日：1990-10-30
申请人： TOKIN CORP
发明人： SETO TADASHI
IPC分类号： H01H37/32
摘要： PURPOSE:To facilitate downsizing of a switch by providing a shape memory alloy spring which is deformed into a previously memorized shape at a prescribed temperature for energizing a second conductor in the separating direction from a first conductor and a balance spring. CONSTITUTION:A shape memory alloy spring 3 is not deformed in its shape to keep a state shown in the figure as long as ambient temperature is lower than a prescribed temperature, therefore, a switch is in an ON state. When the ambient temperature exceeds the prescribed temperature, the spring 3 is contracted due to an effect of a metal phase transformation process, and a second conductor 2 connected thereto is thereby drawn to the right side to be moved against tensile force of a balance spring 4 for separation from a conductor 1. Therefore, the switch becomes OFF. When the ambient temperature again becomes lower than the prescribed temperature, the spring 3 returns from the contraction state and the conductor 2 is drawn by the tensile force of the spring 4 to be moved to the left and brought into contact with the conductor 1. Therefore, the switch again becomes ON.

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