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1. 发明专利

JPH03251702A DISPLACEMENT SENSOR 失效
公开(公告)号：JPH03251702A
公开(公告)日：1991-11-11
申请号：JP4984590
申请日：1990-03-01
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SUZUKI KIKUO , NEGISHI HIDEO
IPC分类号： G01B7/00 , G01D5/06 , G02B6/00
摘要： PURPOSE:To detect a displacement with the moving of a mobile element by arranging the movable element made of a magnetic material within a closed chamber and an optical fiber within a moving range of the movable element to make a magnetic force work on the movable element when a magnet at the tip of the movable material approaches the closed chamber. CONSTITUTION:A movable element 2 made of a magnetic material and fibers 30 and 31 for projecting and receiving light with connectors 3 and 3 are provided within a closed chamber 1. A pin-shaped mobile member 4 protruding upward is provided within an upper cylindrical case 40 of a case 10 in such a manner as to move vertically and a magnet 41 is fixed at the tip thereof. A flange 42 of the movable member 4 is made to abut an upper stopper 43 of the case 40 to energize a coil-shaped elastic body 5 below the flange 42 upward. For example, when the case 40 is fixed inside a manhole (a) and the movable member 4 is set being pressed with a lid (b). The opening or closing of the lid (b) can be detected with the optical fibers 30 and 31. Thus, the sensor thus obtained can be operated as displacement meter as well in a case held watertight.

2. 发明专利

JPS62296309A WATER PRESSURE PROOF BUSHING FOR HIGH PRESSURE 失效
公开(公告)号：JPS62296309A
公开(公告)日：1987-12-23
申请号：JP13835986
申请日：1986-06-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： FUKAZAWA TOSHIRO , NEGISHI HIDEO
IPC分类号： H01B17/30 , H01B17/34

3. 发明专利

JPS5942526B2 JPS5942526B2 - 失效
公开(公告)号：JPS5942526B2
公开(公告)日：1984-10-16
申请号：JP11220278
申请日：1978-09-14
申请人： Furukawa Electric Co Ltd
发明人： KASHIMOTO MITSUAKI , NEGISHI HIDEO
IPC分类号： H02G3/30

4. 发明专利

JP2000261949A PRESSURE-PROOF AND EXPLOSION-PROOF CONNECTION BOX FOR ULTRA-MULTICORE IMPEDANCE CABLE AND 3-CORE CABLE 失效
公开(公告)号：JP2000261949A
公开(公告)日：2000-09-22
申请号：JP6164799
申请日：1999-03-09
申请人： TOKYO GAS CO LTD , FURUKAWA ELECTRIC CO LTD
发明人： KOJIMA KENICHI , SATO KENJI , NEGISHI HIDEO
IPC分类号： H02G15/10
摘要： PROBLEM TO BE SOLVED: To obtain a pressure-proof and explosion-proof connection box that provides good working efficiency of assembling without increase in size of the connection box, and can be also used in the hazardous area. SOLUTION: Conductor of each core wire 209 of the same phase of an ultra- multicore impedance cable 201 is inserted to a plurality of connection holes provided to a connector 101 and is then connected thereto. A connector of each phase of a 3-core cable 202 is inserted to a connection hole provided to a connector 102 and is also connected thereto. Moreover, the part bound in every same phase core of the cable 201, cable sheath end, branching part of 3-core cable 202 and the cable sheath end part are insulated and covered with a thermocompressive 3-way branching pipes 205, 211, the connectors 101, 102 of each phase is insulated and covered in each phase, all connectors of each phase are covered in batch with a cylindrical case 1 for fixing to a cable grounds 4, 5, matching with the explosion proof standard and the cylindrical case 1 is filled with a compound. Moreover, a waterproof cover 11 is attached to the external side of the cylindrical case 1.

5. 发明专利

JPS6457537A MANUFACTURE OF DOUBLE-SEALED TYPE CERAMIC BUSHING 失效
公开(公告)号：JPS6457537A
公开(公告)日：1989-03-03
申请号：JP21406687
申请日：1987-08-27
申请人： TOKYO GAS CO LTD , FURUKAWA ELECTRIC CO LTD
发明人： AOKI NOBUO , AIZAWA IKUO , YOKOI KEISUKE , NEGISHI HIDEO
IPC分类号： H01B17/30 , H01B19/00
摘要： PURPOSE:To alleviate deformation of a bellows and extend the life thereof by soldering and heating, when both ends of the bellows are to be soldered to a ceramic sleeve and to a through conductor, by fixing both ends of the bellows with a fixing device and in a heating furnace. CONSTITUTION:When a ceramic bushing 1 is soldered in a heating furnace, a fixing device 15 made of carbon or the like is attached to sealing pieces 8, 9 on both ends of a bellows 7. The attachment is performed by fitting both ends of the fixing device 15 into recesses of the sealing pieces 8, 9. The double- sealed type ceramic bushing 1 in such a condition is put in a heating furnace. The inside of the furnace is made to a deoxidating atmosphere such as of hydrogen and the temperature thereof is raised above the melting temperature of solder 5, 10, 11. Performing the heating and soldering in this way in the heating furnace by fixing both ends of the bellows 7 with the fixing device 15, thermal stresses due to difference in coefficients of linear expansion between a ceramic sleeve 2 and a through conductor 3 is prevented from being exerted on the bellows 7.

6. 发明专利

JPS63141003A COUPLING STRUCTURE FOR ROTARY ABSORBING UNIT 失效
公开(公告)号：JPS63141003A
公开(公告)日：1988-06-13
申请号：JP28847686
申请日：1986-12-03
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TOMIOKA SHOJI , NEGISHI HIDEO , KOSHIMIZU TERUOMI
IPC分类号： B65H75/38 , G02B6/00
摘要： PURPOSE:To considerably improve the quantity of rotation absorption according to the number of rotation absorbing units by coupling the rotation absorbing units axially. CONSTITUTION:The rotation absorbing units 1A-1C are arrayed on the same axis in the same direction; and the shaft part 15 of the rotation absorbing unit 1B is inserted into the rotary box 11 of the rotation absorbing unit 1A through its shaft holes 16 and 17, the shaft part 15 of the rotation absorbing unit 1C is inserted into the rotary box 11 of the rotation absorbing unit 1B through its shaft holes 16 and 17, and a hollow fixing shaft 41 is inserted into the rotary box 11 of the rotation absorbing unit 1C through its shaft holes 16 and 17 respectively. Further, the winding start terminals 26 of the spiral bodies 21 of the respective rotation absorbing units 1A-1C are fixed to the shaft part 15 and the winding end terminals 27 are fixed to the rotary bodies 11; and the winding start terminals 26 and winding end terminals 27 of the mutually adjacent spiral bodies 21 are connected in order so that the spiral bodies continue successively.

7. 发明专利

JPS55106016A CONNECTOR OF THREE PHASE COAXIAL POWER CALBE 失效
公开(公告)号：JPS55106016A
公开(公告)日：1980-08-14
申请号：JP1232179
申请日：1979-02-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MIURA MOCHIHARU , NEGISHI HIDEO , SUGIZAKI SATORU
IPC分类号： H01R9/03 , H01R9/05 , H02G15/08

8. 发明专利

JPH10116530A DOUBLE SEALED TERMINAL HEADER 失效
公开(公告)号：JPH10116530A
公开(公告)日：1998-05-06
申请号：JP26860496
申请日：1996-10-09
申请人： FURUKAWA ELECTRIC CO LTD , TOKYO GAS CO LTD
发明人： KASAMA ICHIRO , AZUMA MITSUO , MIURA YASUAKI , TAKAGI YOSHIYUKI , OGURA TARO , NEGISHI HIDEO , NISHIDA TOSHIHIRO
IPC分类号： F16L5/00 , H01B17/26 , H01B17/30 , H01B17/58
摘要： PROBLEM TO BE SOLVED: To provide a double sealed terminal header allowing a leak check in a short time by use of a simple inspection device. SOLUTION: Both ends of the hole of a flange 2 with a ceramic sleeve 4 internally coupled are sealed by use of the first flange-sleeve gap sealing part 5 serving a sealing purpose via a sleeve type sealing fixture 10, and the second flange-sleeve gap sealing part 6 serving a sealing purpose via an annular sealing fixture 12. In this case, helium impregnated materials 35 are placed in space 33 formed between the flange 2 and the ceramic sleeve 4, and sealed with the first and the second flange-sleeve gap sealing parts 5 and 6 at both ends, and space 34 formed between the first and the second sleeve-conductor gap sealing parts 8 and 9, and sealed at both ends, so as to preliminarily seal helium into the spaces 33 and 34.

9. 发明专利

JPH1087167A CABLE WINDING STORAGE DEVICE 失效
公开(公告)号：JPH1087167A
公开(公告)日：1998-04-07
申请号：JP25736896
申请日：1996-09-09
申请人： FURUKAWA ELECTRIC CO LTD , TOKYO GAS CO LTD
发明人： SUZUKI KIKUO , NEGISHI HIDEO , MISHIMA MASARU , YANO NOBUHIKO , KOJIMA KENICHI
IPC分类号： B65H54/02 , B65H49/32 , B65H54/22 , H02G1/06 , H02G11/02
摘要： PROBLEM TO BE SOLVED: To dry a cable with an accessory hung up from a vertical shaft at a winding position by furnishing a cover inside drying means to make the inside of a protection cover installed on a base free to connect and disconnect to cover a rotating drum in a dry atmosphere. SOLUTION: A cable winding storage device 10 to wind and store a feeding cable 14 to feed electricity to a submerged type pump P for pumping up liquefied natural gas is furnished with a winding part 36 including a rotating drum 34 to wind up a cable 14 with guide rollers 32, 32' hung down in a vertical shaft 12 or having an accessory 30 of a cleat 30A, etc., with the accessory 30. Additionally, the cable winding storage device 10 is furnshed with a storage part 78 including a protection cover 74 installed on a movable carriage 52 free to connect and disconnect to cover the rotating drum 34 and a cover inside drying means 76 to make the inside of the protection cover 74 in a dry atmosphere. Consequently, it is possible to dry the cable 14 in a state of lifting it up by a pump lifting device 96.

10. 发明专利

JPH06148017A OPTICAL FIBER PRESSURE SENSOR 失效
公开(公告)号：JPH06148017A
公开(公告)日：1994-05-27
申请号：JP31597692
申请日：1992-10-30
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NISHIMURA HIDEKAZU , EZURE TAKASHI , SAKAMOTO TOSHIKI , NEGISHI HIDEO
IPC分类号： G01L1/04 , G01L11/00 , G02B6/00
摘要： PURPOSE:To enable positive pressure detection through simple structure while suppressing the influence of disturbance, e.g. vibration or temperature variation, by employing an optical fiber sensor wound round the outer peripheral surface of an elastic tube. CONSTITUTION:A tubular body 1 is composed of rubber or a titanium alloy which deforms upon application of external pressure and recovered upon release of pressure. A groove is made spirally in the drum 3 of the tubular body 1 and an optical fiber 2 is wound in the groove and fixed in place. A light emitting part and a light receiving part are fixed, respectively, to the opposite ends of the fiber 2. The tubular body 1 deforms upon application of pressure to a pressure receiving plate 5 secured while straddling across flanges 4 at the opposite ends of the tubular body 1. Consequently, the fiber 2 deforms to produce bending loss thus producing optical loss corresponding to the pressure. Pressure to be applied onto the plate 5 can be detected based on the optical loss. The tubular body 1 is self-recovered by its elasticity as the applying pressure decreases and perfectly recovered to original shape as the pressure decreases to zero. The fiber 2 is also recovered thus resetting the optical loss.

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