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1. 发明专利

JPH07251420A MANUFACTURE OF METALLIC POLYMER MOLD 失效
公开(公告)号：JPH07251420A
公开(公告)日：1995-10-03
申请号：JP7011094
申请日：1994-03-14
申请人： FUJIKURA LTD , JECO KK , MITSUI BUSSAN NEKUSUTO KK
发明人： TOMINAGA HARUO , YUITSUKA YOICHIRO , KOMASAKU SEIICHI , ICHIDA ARITAKE
IPC分类号： B29C33/38
摘要： PURPOSE:To utilize a heat pipe and dissipate heat in a metallic polymer mold at the time of curing the metallic polymer by implanting one end of the heat pipe into a liquid metallic polymer and forming the metallic polymer. CONSTITUTION:A cavity side half mold 5 of a metallic polymer mold is disposed on a bottom section of a pouring container 3 so that a master model 1 is positioned on its upper side. In that case, a heat pipe 10 is inserted perpendicularly into the pouring container 3 so that its lower end 10A is disposed close to the center of the master model 1. In the above state, a liquid metallic polymer 4 is injected into the pouring container 3 to form a core side half mold 6 on the upper side of the master model 1. Then the lower end 10A of the heat pipe 10 is implanted inside the metallic polymer 4, while its upper end 10B is protruded above the outside of the metallic polymer 4. Thus the heat dissipation of the core side half mold 6 is performed properly by utilizing the heat pipe 10, and then the heat pipe 10 is drawn out.

2. 发明专利

JPH07224449A FREEZING PREVENTIVE STRUCTURE OF SERVICE WATER PIPE 失效
公开(公告)号：JPH07224449A
公开(公告)日：1995-08-22
申请号：JP3796394
申请日：1994-02-10
申请人： FUJIKURA LTD , ZOJIRUSHI CORP
发明人： TOMINAGA HARUO , NISHIYAMA SADAYOSHI , YUITSUKA YOICHIRO , TONO TAKASHI , JINNO TAKEO
IPC分类号： E03B7/12 , F16L1/00 , F16L9/19 , F16L53/00 , F16L59/14 , F28D15/02
摘要： PURPOSE:To provide a freezing preventive structure for a service water pipe at its rising part to over the ground when it is used in a cold district, with which the freezing preventing effect is high, the equipment cost and/or running cost are low, and the safety is high. CONSTITUTION:One end of a heat pipe 18 is buried underground, and part at the other end is put alongside the outside surface of a rising part 2 of a service water pipe, and this part 2 and the heat pipe 18 are in a lump covered with a heat insulation 20. The heat pipe 18 is embodied in a double structure consisting of an inner and an outer tube, and the rising part of the service water pipe is inserted through its inside. The heat pipe structure should be split into two longitudinally. The rising part is enwrapped with a corrugated heat pipe having flexibility.

3. 发明专利

JPH06308340A PRODUCTION OF PERIODIC INVERSION TYPE PHOTOREFRACTIVE WAVEGUIDE 失效
公开(公告)号：JPH06308340A
公开(公告)日：1994-11-04
申请号：JP9972293
申请日：1993-04-26
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NAKAO SATORU , TOMOMATSU KAZUHIKO , MIMURA SHOJI , KUROSAKA AKITO , TOMINAGA HARUO , KITAYAMA KENICHI , ITO FUMIHIKO
IPC分类号： G02B6/13 , G02B6/12 , G03H1/02
摘要： PURPOSE:To provide the process for production of the periodic inversion type photorefractive waveguide capable of preventing the generation of cracks during working and lowering a defective rate, thereby decreasing the man-hours for mending, executing poling regardless of the sizes and size ratios of crystals and easily producing periodic inversion waveguides at low cost. CONSTITUTION:A BaTiO3 single crystal 10 worked to a prescribed shape is heated to >=130 deg.C in silicone oil 14 and is cooled while a uniform electric field is impressed thereto until the temp. passes the Curie point in a first electrical poling treatment stage. The single crystal is then brought into contact with periodically arranged plural electrodes and alternately inverted electric fields is impressed thereto between the adjacent electrodes at >=80 to

4. 发明专利

JPH05337741A 失效
公开(公告)号：JPH05337741A
公开(公告)日：1993-12-21
申请号：JP33931292
申请日：1992-12-18
申请人： FUJIKURA LTD
发明人： TAKAYAMA TERUYUKI , TOMINAGA HARUO , OGURA YOSHIO , YAMAGUCHI TETSUO
IPC分类号： B23H7/08 , C23C10/24 , H01B5/02 , H01B13/00
摘要： PURPOSE:To provide the manufacture of a electrode wire for wire electrodischarge machining that is high in strength against high temperature, less in the frequency of disconnection even if removal rate is increased and able to enhance the efficiency of electrodischarge machining operations. CONSTITUTION:Zincing is applied to the outer circumferential surface of a copper covered steel wire 11 made up of covering copper on the steel wire at a covering rate of 10-70% and, after a zinc layer is formed there, it is subjected to heat treatment in an inert atmosphere so as to get zinc alloyed with the ground copper to the full as this zinc layer vanishes into nothing, through which it comes to a thickness of 1-15mum, where such a concentration gradient as making zinc density become high toward an outer layer from the copper ground is set thereon, thereby forming a copper- zinc alloyed layer 12 which has an outer layer 13 of 55-65% in zinc density at the outer surface side, an intermediate layer 14 of 40-48% in zinc density at the intermediate part and an inner layer 15 of less than 40% in zinc density at the inner surface side, respectively. With this constitution, a removal rate is increasable and, what is more, such a wire electrodischarge machining electrode wire as excellent even in economical efficiency is thus securable.

5. 发明专利

JPH05319995A PRODUCTION OF BARIUM TITANATE OPTICAL SINGLE CRYSTAL 失效
公开(公告)号：JPH05319995A
公开(公告)日：1993-12-03
申请号：JP15434692
申请日：1992-05-21
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NAKAO SATORU , TOMOMATSU KAZUHIKO , MIMURA SHOJI , KUROSAKA AKITO , TOMINAGA HARUO , KITAYAMA KENICHI , ITO FUMIHIKO
IPC分类号： C30B29/32 , G02B1/02 , H01L41/18
摘要： PURPOSE:To provide a method for producing an optical single crystal of BaTiO3 in which a long waveguide of coupling can be ensured without causing the attenuation of light without strain and noise; a high amplification ratio can be obtained; the adhesion of a film is excellent and uniform photorefractive effects can be obtained. CONSTITUTION:A 90 deg. domain is eliminated by uniaxial compression and an electric field alternately reversing in the light transmitting direction is then applied to produce a single crystal in which the 180 deg. domain structure is alternately provided in the light transmitting direction. Thereby, since the reference light always advances in a constant relation to the polarizing direction, the amplification of the signal light is produced in a coupling part of the signal light and the reference light. Furthermore, the reflection of the signal light and occurrence of noise are not caused. In this case, since the electric field is applied, each electrode 10 composed of an Au thin film 14 and an Ag paste 15 is formed on the front and back surfaces of the single crystal.

6. 发明专利

JPH05198222A OXIDE SUPERCONDUCTIVE WIRE ROD 失效
公开(公告)号：JPH05198222A
公开(公告)日：1993-08-06
申请号：JP34951691
申请日：1991-12-07
申请人： FUJIKURA LTD , CHUBU ELECTRIC POWER
发明人： KUROSAKA AKITO , AOYANAGI MAMORU , TOMINAGA HARUO , SAJI AKIRA , INOUE TOSHIO
IPC分类号： C01G1/00 , C01G29/00 , C04B41/88 , C04B41/90 , H01B12/04 , H01B13/00
摘要： PURPOSE:To apply a stabilizing material uniformly in thickness and with good adhesiveness by forming a Cu-Ag layer of specific thickness by electroplating on a core wire not larger than 2mm in diameter of Bi series oxide superconductive wire crystalized by a fusion method. CONSTITUTION:A core wire part A is formed by locally melting Bi-Sr-Ca-Cu-O series superconductive wire rod by a floating zone fusion method and the like to move a fused part in the direction of the length for crystallization to solidify. And then it is required for the orientation of a crystalline structure and the adhesiveness of a plated layer to make the diameter of a wire not larger than 2mm. A Cu layer B of 1 to 1.5mum thick is formed on the circumference of a core wire part A by electroplating and then a coating Ag layer C not less than 20mum thick is formed on the outer surface thereof by electroplating Thereby, the decrease of critical electric current density of a wire rod due to the deterioration of superconductive characteristics may be prevented to improve mechanical characteristics such as the strength of a wire and the like.

7. 发明专利

JPH04305097A BARIUM TITANATE SINGLE CRYSTAL 失效
公开(公告)号：JPH04305097A
公开(公告)日：1992-10-28
申请号：JP9307991
申请日：1991-03-31
申请人： FUJIKURA LTD
发明人： KUROSAKA AKITO , TOMOMATSU KAZUHIKO , NAKAO SATORU , MIMURA SHOJI , TOMINAGA HARUO
IPC分类号： C30B15/00 , C30B29/32
摘要： PURPOSE:To avoid trouble such as cracking in the production and to obtain a barium titanate single crystal higher in light refractivity than in the conventional practice. CONSTITUTION:This barium titanate single crystal is grown in a gaseous atmosphere contg. >=95% N2 and contains

8. 发明专利

JPH03247586A DEVICE FOR GROWING OXIDE SINGLE CRYSTAL 失效
公开(公告)号：JPH03247586A
公开(公告)日：1991-11-05
申请号：JP4352490
申请日：1990-02-23
申请人： FUJIKURA LTD
发明人： MIMURA SHOJI , KUROSAKA AKITO , TOMINAGA HARUO
IPC分类号： C30B15/14 , C30B29/30 , C30B29/32 , H01L21/208
摘要： PURPOSE:To avoid the overcooling of a molten material, to control the growth of a crystal from the place other than a seed crystal and to stably grow a single crystal of desired shape in the device for growing an oxide single crystal by the soln. pull method by arranging a beat shielding plate above the molten material. CONSTITUTION:A bottomed cylindrical muffle 9 is arranged in a heating furnace 8, and a crucible 1 contg. a molten material 5 is set in the muffle 9. A heat shielding plate 13 is provided above the molten material 5, and the distance between the lower surface of the plate 13 and the surface of the molten material 5 is adjusted to 30-150mm. The crucible 1 is heated by a heater 2 to hold the molten material 5 at a specified temp., and a seed crystal 4 is lowered and brought into contact with the molten material 5. The current applied to the heater 2 is then reduced to cool the seed crystal 4, a crystal is grown on the lower part of the seed crystal 4, and a seed rod 3 is lifted up to grow a single crystal on the lower part of the seed crystal 4.

9. 发明专利

JPH03246826A MANUFACTURE OF OXIDE CRYSTALLINE WIRE MATERIAL 失效
公开(公告)号：JPH03246826A
公开(公告)日：1991-11-05
申请号：JP4494590
申请日：1990-02-26
申请人： FUJIKURA LTD
发明人： AOYANAGI MAMORU , TOMINAGA HARUO , KUROSAKA AKITO
IPC分类号： H01B12/04 , H01B13/00
摘要： PURPOSE:To enable obtaining a high strength sintered body of oxide without any use of a molding assistant such as a caking agent by sealing oxide powder wetted with moisture to the predetermined level in a rubber tube, and freezing the powder after molding under pressure for maintaining the shape of the compact of the oxide powder. CONSTITUTION:Oxide powder wetted up to 3wt.% or more of moisture is sealed in a rubber tube and then molded under pressure. The compact so obtained is immersed and frozen in a solvent at a temperature equal to or below liquid nitrogen temperature, together with the rubber tube. The compact after the separation of the rubber tube is heated up to 800 deg.C or higher for sintering. An oxide sintered body material 1 obtained after the separation of the rubber tube is made to have a diameter of 1.0mm or more. This material 1 is locally heated and the liquid of a fused portion 3 is solidified to obtain a wire material 11 having a diameter of 0.5mm or less. According to the aforesaid construction, the oxide can be sintered without any addition of a molding assistant and the oxide crystalline wire material 11 can be continuously manufactured without any any break at a low cost.

10. 发明专利

JPH03183787A METALLIC BASE MATERIAL FOR SUPERCONDUCTING OXIDE 失效
公开(公告)号：JPH03183787A
公开(公告)日：1991-08-09
申请号：JP32286689
申请日：1989-12-13
申请人： FUJIKURA LTD
发明人： TOMINAGA HARUO , KUROSAKA AKITO , MIMURA SHOJI , NAKAO SATORU , TOMOMATSU KAZUHIKO , AOYANAGI MAMORU
IPC分类号： C23C28/02 , C23C30/00 , H01B12/06
摘要： PURPOSE:To produce a metallic base material for superconducting oxide having superconductivity practically equal to that of the conventional metallic base material composed of gold alone by successively allowing an intermediate layer composed of niobium and an outer layer composed of gold having respectively specified thicknesses to adhere on a substrate composed of copper material. CONSTITUTION:A copper wire composed of copper or copper alloy is used as a core material 1, and the peripheral surface of this core material 1 is coated with a niobium layer 2 of >=0.1mu thickness as an intermediate layer. Further, the above niobium layer 2 is coated with a gold layer 3 to >=0.5mu thickness. The resulting coated metallic base material is subjected to heating treatment at about 900 deg.C, by which a laminated body consisting of a laminated material free from intermetallic diffusion is produced. By this method, the metallic base material having superconductivity practically equal to that of the conventional superconducting oxide laminated material can be obtained at low manufacturing costs.

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