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41. 发明专利

JPH11308769A REDUCTION OF POWER TRANSMISSION LOSS 失效
公开(公告)号：JPH11308769A
公开(公告)日：1999-11-05
申请号：JP10957798
申请日：1998-04-20
申请人： HITACHI CABLE
发明人： TERUNUMA MASAHIRO , FUJIKURA KATSUYOSHI
IPC分类号： H02J3/00 , H02G7/20
摘要： PROBLEM TO BE SOLVED: To suppress the consumption of power by an overhead earth wire, by electrically insulating the overhead earth wire from an iron tower, and, when the voltage between the overhead earth wire and the iron tower becomes a specified level or above, discharging the overhead earth wire toward the iron tower. SOLUTION: Each overhead earth wire 2 is connected to one end of each insulator 3 to be electrically insulated from steel towers 1. The overhead earth wire 2 between any two iron towers is electrically connected to an overhead earth wires 2 between each of the two iron towers and an adjacent one by a jumper wire 4. Since the overhead earth wires 2 need be grounded for their original purpose of preventing the damage due to lightning, they are provided with dischargers 5 for discharging at the time the applied voltage becomes a specified level or above. Therefore, when the applied voltage to the dischargers 5 is the specified level or below, current is never allowed to flow to the ground from the overhead earth wires 2 even if electromotive force is caused in the overhead earth wires 2 by electromagnetic induction and the like, because the overhead earth wires 2 are electrically insulated from the steel towers 1. As a result, the overhead transmission line consumes no power.

42. 发明专利

JPH09191584A WIRELESS SAFETY DEVICE 失效
公开(公告)号：JPH09191584A
公开(公告)日：1997-07-22
申请号：JP16396
申请日：1996-01-05
申请人： HITACHI CABLE
发明人： FUJIKURA KATSUYOSHI
IPC分类号： H02H3/22 , H02H7/26 , H02J13/00 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To prevent thunder surge from entering completely by fitting, at a receiving side wireless device, an on/off control means for remote-controlling on/off of a receiving channel for receiving a signal from a transmission channel in a receiving part. SOLUTION: If a monitor device is not operated when there is a possibility of lightening, a circuit opening signal is transmitted from a transmission channel 2ch:105 by means of operation for a transmission side wireless device IA, namely, by depressing an off switch 103. A receiving channel 2ch:110 in a receiving side wireless device 1B receives the signal, a switch is turned on, and a keep relay 110 which is a reset coil directly-connected to the switch is energized, so that a power supply on/off contact 112 is off, and a power supply cable line 71 is cut off. The relay coils 21, 31 of relay devices 2, 3 are also not energized, thus contacts 22, 32 are off, and cable lines 73, 74 between apparatuses are cut off.

43. 发明专利

JPH09163596A MONITOR SYSTEM 失效
公开(公告)号：JPH09163596A
公开(公告)日：1997-06-20
申请号：JP31992795
申请日：1995-12-08
申请人： HITACHI CABLE
发明人： FUJIKURA KATSUYOSHI
IPC分类号： H02H11/00
摘要： PROBLEM TO BE SOLVED: To protect a monitor mechanism, which is installed to receive image or sound from monitor equipment, or control the monitor, etc., from the surge of thunderbolt. SOLUTION: A monitor system is made of a monitor mechanism B comprising monitor equipment (A) composed of an outdoor monitoring camera 1 attached to a pylon 91, a radio 2, etc., video monitors 31 and 33 connected to this monitor mechanism (A) and projecting the image from the camera 1, controllers 32 and 34 for controlling the monitor equipment (A), and others. On the other hand, a time switch 8 is interposed in the relay 7 which electrically connects it with a power source 6 so as to make these monitor equipment (A) and monitor mechanism (B) function as specified, and the distribution line 7 is disconnected by automatically operating this time switch 8 in preset time zone.

44. 发明专利

JPH06211494A CARRY-IN AND OUT POSITION JUDGEMENT DEVICE FOR CRANE 失效
公开(公告)号：JPH06211494A
公开(公告)日：1994-08-02
申请号：JP596493
申请日：1993-01-18
申请人： HITACHI CABLE
发明人： FUJIKURA KATSUYOSHI , TAKAGI HIROMITSU
IPC分类号： B66C13/48 , B66C23/00 , B66C23/90
摘要： PURPOSE:To discard a supervisor for signaling and to improve working performance in transportation work in which values of a slewing angle and a depression elevation angle are always constant. CONSTITUTION:An inclination sensor 21 to detect a depression elevation angle of the jib 7 of a jib crane 1, a slewing angle sensor 22 to detect a slewing angle of the jib 7 and a judgement mechanism 25 to memorize the depression elevation angle and the slewing angle of a set carry-in and out position and to output an arrival signal at the time when the set value and detected values of the sensors 21, 22 are compared with each other and at least they match with each other are furnished. Additionally, an attention calling unit 26 for announcing notice to a crane driver by means of dispatching arrival signal is provided in the judgement mechanism.

45. 发明专利

JPH06129597A PROXIMITY ALARM DEVICE 失效
公开(公告)号：JPH06129597A
公开(公告)日：1994-05-10
申请号：JP27893592
申请日：1992-10-16
申请人： HITACHI CABLE
发明人： FUJIKURA KATSUYOSHI , TERUNUMA MASAHIRO
IPC分类号： F16P3/14 , G08B13/26 , H02G1/02
摘要： PURPOSE:To provide a proximity alarm device which raises notice certainly, can be installed and removed easily, and is suitable for works to be specified as a hazardous zone at any time. CONSTITUTION:A proximity sensor 5 to sense approach of any person, an alarm 7 to issue alarm in conformity to the sensing signal thus given, and a power supply for them are accommodated in a cylindrical case 2 which has a hollow at the axis part so that it can be mounted removably on a protrusion provided on a structure such as a steel tower, electric post, etc.

46. 发明专利

JPH05344635A 失效
公开(公告)号：JPH05344635A
公开(公告)日：1993-12-24
申请号：JP15520892
申请日：1992-06-15
申请人： HITACHI CABLE
发明人： TERUNUMA MASAHIRO , FUJIKURA KATSUYOSHI
IPC分类号： G08B13/181 , H02G7/00 , H02J7/00
摘要： PURPOSE:To produce an alarm when a worker approaches a charged part with no effect of electromagnetic induction at a high voltage dangerous site such as transmission line steel tower. CONSTITUTION:The alarm comprises an electromagnetic shield container 10a to be fixed at a high voltage dangerous site such as transmission line steel tower, a sensor 15 contained in the container 10a and senses approach of an electrician, an alarm 18 producing an alarm sound upon function of the sensor 15, and a power supply 20 comprising solar cells 11 for feeding power to the alarm 18 and the sensor 15 and a battery 19 for storing power connected in parallel with the solar cells 11.

47. 发明专利

JPH0422382B2 失效
公开(公告)号：JPH0422382B2
公开(公告)日：1992-04-16
申请号：JP24935284
申请日：1984-11-26
申请人： HITACHI CABLE
发明人： FUJIKURA KATSUYOSHI
IPC分类号： H04M1/00

48. 发明专利

JPH03109199A SKY MONITORING DEVICE 失效
公开(公告)号：JPH03109199A
公开(公告)日：1991-05-09
申请号：JP24477689
申请日：1989-09-20
申请人： HITACHI CABLE
发明人： HIRAI MIKIO , FUJIKURA KATSUYOSHI
IPC分类号： B64B1/00 , H02G1/02 , H02J13/00
摘要： PURPOSE:To enable flexible and easy monitoring in a wide range of a golf course, etc., using a sky monitoring device by carrying a floating trajectory structure in which gas lighter than air is filled with a propeller and a small video camera so that monitoring and recording can be made through a ground monitor. CONSTITUTION:A balloon 1 in which helium gas is filled is carried with a propeller 3, a TV camera 5, a wind-direction & speed sensor 2 and a camera operation base 4, the operation base 4 and a ground monitor connected together via a transmission feed cord 6. In this way, the balloon 1 connected to the ground via the cord 6 has no trouble to be blown off, and moves in a wide range using the propeller 3 to take pictures through the TV camera 4 and send them to the ground monitor. It is thus possible to make flexible and easy monitoring in a wide range.

49. 发明专利

JPH02223310A EXTENSION OF OVERHEAD TRANSMISSION LINE 失效
公开(公告)号：JPH02223310A
公开(公告)日：1990-09-05
申请号：JP31733288
申请日：1988-12-15
申请人： HITACHI CABLE
发明人： FUJIKURA KATSUYOSHI
IPC分类号： H02G1/02
摘要： PURPOSE:To correct and control extension looseness automatically, to stabilize extension velocity and to make it possible to execute operation at a high speed by providing a sensor detecting the looseness of the wire in important spans, and inputting a detected result to a damping controlling system or a take-up controlling system of a stringing winch. CONSTITUTION:A separating detection sensor 2A is placed between diameters having an important transversely moving substance 12, and a detected signal of the sensor 2A is inputted to a lower setting 6 so that a separation L2 can be detected. A lower value is so set to the lower setting 6 that it is allowable for the falling of an electric wire, leaving the control of conductor length looseness to the sensor 2A in case the electric wire 7 during the conductor length does not fall down to the lower value, weighting and inputting the signal to a comparator 4 in case the wire 7 falls up to the lower value, adding it to an amount set by a standard setting 5 outwardly, and wire separations L1 and L2 are extended by increasing the tensile force of the wire 7 for only the portion of addition to prevent the generation of an abnormal condition.

50. 发明专利

JPS6311008A METHOD OF ATTACHING SPIRAL ROD AND THE LIKE 失效
公开(公告)号：JPS6311008A
公开(公告)日：1988-01-18
申请号：JP15391586
申请日：1986-06-30
申请人： HITACHI CABLE
发明人： TERUNUMA TADAHIRO , FUJIKURA KATSUYOSHI
IPC分类号： H02G1/02 , H02G7/14 , H02G7/16

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