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1. 发明专利

JPH0393108A LOW AN TYPE LOW NOISE ELECTRIC CABLE 失效
公开(公告)号：JPH0393108A
公开(公告)日：1991-04-18
申请号：JP22879689
申请日：1989-09-04
申请人： HITACHI CABLE , TOKYO ELECTRIC POWER CO
发明人： SHIMOJIMA KIYOSHI , KAWAKAMI TAKASHI , YAMAMOTO KENJI
IPC分类号： H01B5/08
摘要： PURPOSE:To improve the wind noise characteristic and the AN(audible noise) characteristic by forming a recessed section prepared under a specified condition at about the central position of a surface of large diameter stepped surface. CONSTITUTION:The bottom part of a recessed section 11 is designated by determining a virtual concentric circle Q relative to an electric cable wherein each of interposed element-wires 3, 3 is inscribed, expressing an intersecting point where the virtual concentric circle intersects the side surfaces of thick-walled element-wires 1, 1 on both sides of the circle respectively as D, D' and equalizing the length delta of this D-D' to the width of the bottom part while equalizing also a difference in radial direction between the virtual concentric circle Q and a circle P of large diameter difference in level to the depth (ho) of the recessed section. Furthermore, a central angel which the side surface of the recessed section forms to the center of the electric cable is expressed as thetao and a central angle which a plane between actual surfaces A, A' of a large diameter stepped part forms as thetae. Values of these expressed signs must be determined to satisfy the condition of a formula I. The electric cable can thus reduce not only wind noises as well as wind pressure but also audible noises originating in corona generated waterdrops in case of a rainfall.

2. 发明专利

JPS5889714A LOW NOISE WIRE 失效
公开(公告)号：JPS5889714A
公开(公告)日：1983-05-28
申请号：JP18737781
申请日：1981-11-20
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： KAMO YOSHIO , SHIMOJIMA KIYOSHI , KAWAMURA TOSHIO , SANO YOSHIROU , YAMAMOTO KENJI , KOUNO HIDEO , SATOU TSUYOSHI
IPC分类号： H01B7/00 , H02G7/14

3. 发明专利

JPH0487210A ELECTRIC CABLE OF LOW WIND NOISE AND LOW AUDIBLE NOISE (AN) 失效
公开(公告)号：JPH0487210A
公开(公告)日：1992-03-19
申请号：JP20019190
申请日：1990-07-27
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： TAKEBE TOSHIRO , WATANABE MASATO , YAMADA TOSHIO , FUJISHIMA TAKAO , URASAWA KATSUYUKI , OGAWA MASAHIRO , SHIMOJIMA KIYOSHI , KARASHI YUJI , KAWAKAMI TAKASHI , YAMAMOTO KENJI , KIKUCHI HITOSHI , ITO HIROAKI
IPC分类号： H01B5/08
摘要： PURPOSE:To obtain an electric cable excellent in wind noise and AN characteristics by composing the outermost strand layer of thick and thin strands having nearly sectorial sections, forming a groove part at nearly the central position on the surface of each large diametral step and specifying their characteristics and shapes. CONSTITUTION:The outermost strand layer of a stranded wire is composed of thick strands 1 and thin strands 2 both having nearly sectorial sections and smooth step surfaces are spirally formed on the peripheral surface of the stranded wire by the difference between strands 1, 2, and also a groove part 11 is formed at nearly the central position on the surface of each large diametral step. Hereupon, where a center angle being formed with actual surfaces of each surface 10a of the large diametral step is thetae, an uneven level difference is h, an equivalent outside diameter of a surface- smooth electric cable to an ordinary electric cable is de, an outside diameter of the ordinary electric cable is d, a depth of a recess being formed between the strands adjoining each other which form a surface 10b of a small diametral step is delta and an opening width of the recess is t, expressions I to VI are satisfied. In this way, the electric cable of low wind noise and low AN having a constitution for attaining the optimum condition in both low wind noise and AN properties can be obtained.

4. 发明专利

JPH0492062A SNOW DAMAGE PREVENTION TYPE STEEL TOWER 失效
公开(公告)号：JPH0492062A
公开(公告)日：1992-03-25
申请号：JP20882690
申请日：1990-08-06
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： FURUHATA NORIAKI , SHIMOJIMA KIYOSHI , KARASHI YUJI , KAWAMURA TOSHIO , YAMAMOTO KENJI
IPC分类号： E04H9/16 , E04H12/10
摘要： PURPOSE:To remove damage caused under a steel tower due to falling down of snow lump, by sticking or winding a spiral wire on a steel tower member to fix the snow stacked up on the steel tower member to the tower and gradually thawing it. CONSTITUTION:A wire bar 1 formed to be a nearly oval spiral in the longitudinal direction on the external face, for instance, of an angle member 11 is fixed by welding, hooking 1a, fastening with bolts 1b, etc. When snow stacks thereon, as the wire bar 1 separated from the surface of the angle member 11 by the distance delta exists in the inside of the stacked snow 20, the wire bar 1 serves to retain the snow on the angle 11 to prevent the snow lump from falling down. The snow prevented from falling is thawed soon and the fear bringing about falling snow is removed.

5. 发明专利

JPS5972915A Simultaneous multistrip cable laying and containing method 失效
标题翻译：同时多层电缆层和包含方法
公开(公告)号：JPS5972915A
公开(公告)日：1984-04-25
申请号：JP18388082
申请日：1982-10-18
申请人： Tokyo Electric Power Co , Sumitomo Electric Industries
发明人： OKUHARA YUUJI , MIYAMOTO TETSUJI , YAMAMOTO KENJI
IPC分类号： H02G1/06

6. 发明专利

JPH104615A METHOD FOR CONNECTING JUMPER DEVICE 失效
公开(公告)号：JPH104615A
公开(公告)日：1998-01-06
申请号：JP15265396
申请日：1996-06-13
申请人： CHUGOKU ELECTRIC POWER , HITACHI CABLE
发明人： ASHIDA SHIRO , YAMAMOTO KENJI , KIKUCHI HITOSHI
IPC分类号： H02G1/02 , H02G7/20
摘要： PROBLEM TO BE SOLVED: To provide a method for connecting a jumper device capable of mechanically and electrically stable connection without being influenced by the diameter of a used aluminum pipe. SOLUTION: For a jumper device, connecting metal fittings 102 and 103 are attached to the connection ends of pipe conductors 101a and 101b. These connecting metal fittings have spigots 102a and 103a to pipe conductors, and planes to stick fast to the opposite connection pieces 103c (102c), and the fixation between both after connection of these planes is made by a puerility of bolts 105. Fastening by bolts is performed with metallic plate interposed. hereby, required mechanical strength and electrical stability can be secured, without being influenced by the diameters of pipe conductors 101a and 101b.

7. 发明专利

JPH09275619A METHOD FOR PREVENTING WIND NOISE OF MULTIPLE-CONDUCTOR TRANSMISSION LINE 失效
公开(公告)号：JPH09275619A
公开(公告)日：1997-10-21
申请号：JP10457896
申请日：1996-04-02
申请人： HITACHI CABLE
发明人： YAMAMOTO KENJI , SHIMOJIMA KIYOSHI , KIKUCHI HITOSHI
IPC分类号： H01B5/08 , H02G7/14
摘要： PROBLEM TO BE SOLVED: To prevent neighboring electric wires with a spiral strand wound from attracting and colliding with each other by an electromagnetic force on occurrence of a short-circuit failure and thereby to prevent the wound spiral strand from damaging the electric wires, when the prevention of wind noise is attempted by winding a spiral strand on each transmission line arranged in parallel. SOLUTION: A space between electric wires 1 constituting multiple-conductor transmission lines is maintained by spacers 2. In a span between the two spacers (called a subspan), the middle part of the subspan is wound with a spiral strand 4 to the reverse direction against the laying direction of an electric wire, but both ends of the subspan closer to the spacer mounted parts are wound with a spiral strand 3 to the same direction with the laying direction of the electric wire. This winding method applies to each subspan and each electric wire arranged in parallel. If a short- circuit occurs, the middle parts of the subspan attract and collide with each other. However, the spiral strand wound on the electric wire to the reverse direction does not bite into the electric wire so that a damage to the wire is reduced. In term of the longitudinal direction, this winding method is effective to prevent vibration and wind noise.

8. 发明专利

JPH09182266A JUMPER APPARATUS 失效
公开(公告)号：JPH09182266A
公开(公告)日：1997-07-11
申请号：JP33240195
申请日：1995-12-20
申请人： HITACHI CABLE
发明人： KIKUCHI HITOSHI , YAMAMOTO KENJI , KUBOKAWA HIROSHI , IWAMA SHIGEMI
IPC分类号： H02G7/14 , H02G7/20
摘要： PROBLEM TO BE SOLVED: To provide a jumper apparatus wherein the line-direction vibration absorbing characteristic of a jumper cable can be improved without increasing the stiffness of the movable coupling portion of a horizontal member of the jumper cable to its supporting metallic fitting. SOLUTION: This apparatus comprises a supporting member 5, a horizontal member 6 coupled movably to the member 5 and a damper 1 interposed between them. As the damper 1, a direct acting type or lever type hydraulic damper may be used preferably. Also, another means to be provided here comprises the supporting member 5, a main-line-side strain metal fitting coupled movably to the member 5 and a damper 1 interposed between them. As the damper 1 in this case, the direct acting type or lever type hydraulic damper may be preferably used too.

9. 发明专利

JPH0795717A SNOW GUARD STRUCTURE OF SNOW STAMPING DEVICE 失效
公开(公告)号：JPH0795717A
公开(公告)日：1995-04-07
申请号：JP23465493
申请日：1993-09-21
申请人： HITACHI CABLE
发明人： ABE KATSUYOSHI , KUBOKAWA HIROSHI , KAWAKAMI TAKASHI , YAMAMOTO KENJI , OTAKA KAZUYOSHI
IPC分类号： H02G7/16
摘要： PURPOSE:To prevent the falling down at once of a lump of snow adhering to the main body casing of a snow stamping device for stamping snow adhering to wires. CONSTITUTION:A rod 12 which is elongated in the vertical direction and has a curved surface on the outside is fitted to the side face 4a of the main body casing 4 of a snow stamping device 1 which is constituted to stamp snow lying on a wire 2 by winding spiral rods 3 having an inside diameter slightly larger than the outside diameter of the wire 2 around the wire 2 and moving the rods 3. Because of the rod 12, the snow adhering to the side face 4a of the casing 4 hardly falls down, but is held on the side face 4a of the casing 4 until the snow becomes a left and right semi-solid lumps and the lumps separately fall down. When a projection 13 is provided on one side section of the rod 12, the left and right snow lumps generate a time lag in falling down and the lump of snow adhering to the side face 4a is surely divided into the left and right lumps which separately fall down.

10. 发明专利

JPH0779520A SPIRAL ROD FOR WIRE 失效
公开(公告)号：JPH0779520A
公开(公告)日：1995-03-20
申请号：JP22323593
申请日：1993-09-08
申请人： HITACHI CABLE
发明人： SHIMOJIMA KIYOSHI , NAGAI MASAHIRO , YAMAMOTO KENJI , ISHIDA AKINORI , UCHIYAMA TAKAO
IPC分类号： H02G7/14
摘要： PURPOSE:To provide a novel spiral rod for a wire having high weatherability and corrosion resistance with the weight reduced significantly while sustaining strength against crush, bending, etc., and a predetermined electric conductivity. CONSTITUTION:The spiral rod 1 wound spirally along the longitudinal direction of a wire is internally provided with a foamed metal structural part 4.

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