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71. 发明专利

JPH01286715A SNOW ADHESION PREVENTIVE TYPE LOW WIND NOISE WIRE 失效
公开(公告)号：JPH01286715A
公开(公告)日：1989-11-17
申请号：JP11457688
申请日：1988-05-13
申请人： HITACHI CABLE
发明人： YAMAMOTO KENJI , OSHIMA OKIHIRO , SHIGA HIROICHI , SHIMOGAMO KIYOSHI
IPC分类号： H02G7/14 , H02G7/16
摘要： PURPOSE:To improve snow adhesion preventive effect by increasing the diameter of a wire of the same direction winding rod larger than that of a spiral rod of reversely winding to the twisting direction of the wire (or increasing the number of attachment in a circumferential direction or shortening its winding pitch) to increase a generated lifting force, and increasing the winding length of the rod crossing perpendicularly to its twisting direction. CONSTITUTION:The diameter of an S-direction winding rod of a spiral rod 2 wound on the outer periphery of a S-twisted wire 1 is formed largely than that of a Z-direction winding rod. In order to balance a lifting force generated by the S-direction winding rod with a reverse lifting force by increasing the reverse lifting force due to its increase caused by its large diameter, the spiral rod is wound in length l in the S direction, while the S-direction aiding rod is wound in length 3l in the Z-direction. Thus, the Z-direction winding part perpendicular to the S-twisted wire can be increased in its length, thereby increasing the length of a zone effective in prevention of snow adhesion.

72. 发明专利

JPS6450709A SPIRAL ROD FOR AERIAL LINE AND WINDING METHOD 失效
公开(公告)号：JPS6450709A
公开(公告)日：1989-02-27
申请号：JP20722787
申请日：1987-08-20
申请人： HITACHI CABLE
发明人： YAMAMOTO KENJI , SHIMOJIMA KIYOSHI
IPC分类号： H02G7/16 , H02G7/14
摘要： PURPOSE:To align the positions of the terminals of a spiral rod in the desired direction easily and freely by determining the winding pitches of the spiral rod wound on an aerial line and bringing the length of the spiral rod to integral times as long as said winding pitches. CONSTITUTION:In a spiral rod 2 wound on the outer circumference of an electric wire 1 as an aerial line, the winding pitches P of the spiral rod are determined at an optimum value in consideration of the wire diameter of the electric wire 1, the diameter or material of the spiral rod 2, the ease of winding work, etc. The length L of the spiral rod 2 is selected in length as integral times as long as said pitches P. When the spiral rod 2 is composed as mentioned above, a winding-start terminal 2a is decided on the upper side of the electric wire 1 and the wire may be wound according to free winding work in the same manner as conventional devices when terminals must be aligned in the upper side direction as shown in the figure, and a winding-end terminal 2b is determined on the same upper side as the winding-star terminal 2a automatically without paying no attention.

73. 发明专利

JPS6439213A SNOW-PROOF METHOD FOR TRANSMISSION LINE ACCESSORY 失效
公开(公告)号：JPS6439213A
公开(公告)日：1989-02-09
申请号：JP19354087
申请日：1987-08-01
申请人： HITACHI CABLE
发明人： YAMAMOTO KENJI , OSHIMA OKIHIRO , SANBONSUGI KIYOSHI , SHIMOJIMA KIYOSHI
IPC分类号： H02G7/16
摘要： PURPOSE:To promote the drop of icy snow before it grows to a large block, and enable damage due to snowfall, to be minimized, by winding up the outer periphery of an accessory with a filament unit made of magnetic material having a low curie point, in a close contact state. CONSTITUTION:An accessory like a spacer clamp 2 fitted on an electric wire 1 is cintrived to be wound up with a filament unit 3 made of magnetic material having a low curie point, in a close contact state. The curie point of the filament unit 3 should be set at an approximate temperature for generating attached icy snow, and the number of turns should be controlled according to a necessary heat generation quantity. As a result, the filament unit 3 is turned ferromagnetic near the icy snow point, and heat is generated based on a hysteresis loss due to the action of current flowing through the wire 1, and so the icy snow is prevented from growing to a large block at a section for fitting on the accessory 2.

74. 发明专利

JPS61109412A Compression type arresting clamp and mounting method thereof 失效
标题翻译：压缩式压接钳及其安装方法
公开(公告)号：JPS61109412A
公开(公告)日：1986-05-27
申请号：JP23059484
申请日：1984-11-01
申请人： Hitachi Cable
发明人： KAWAMURA TOSHIO , SHIMOJIMA KIYOSHI , YAMAMOTO KENJI , KARASHI YUJI
IPC分类号： H02G7/02

78. 发明专利

JPS59143208A Low noise wire 失效
标题翻译：低噪声线
公开(公告)号：JPS59143208A
公开(公告)日：1984-08-16
申请号：JP1787983
申请日：1983-02-04
申请人： Hitachi Cable
发明人： SHIMOJIMA KIYOSHI , KAWAMURA TOSHIO , KUBOKAWA HIROSHI , YAMAMOTO KENJI , SATOU TSUYOSHI
IPC分类号： H01B7/22 , H01B5/08 , H01B7/28 , H02G7/14

79. 发明专利

JPS543284A PRESSURE BONDING OF CONTINUOUS SLEEVE FOR STEEECORED ALUMINUM STRANDED WIRE 失效
公开(公告)号：JPS543284A
公开(公告)日：1979-01-11
申请号：JP6762277
申请日：1977-06-08
申请人： HITACHI CABLE
发明人： YAMAMOTO KENJI , TANAKA AKIRA , TAKAGI TERUO , YAMAZAKI TAKASHI
IPC分类号： H01R43/048
摘要： PURPOSE:To prevent the bias of continuous sleeve at the time of pressure bonding by attaching a deviation prevention plug at near the center of continuous sleeve.

80. 发明专利

JP2002159128A WIND NOISE PREVENTING DEVICE USING ANGLED MATERIAL 失效
公开(公告)号：JP2002159128A
公开(公告)日：2002-05-31
申请号：JP2000351536
申请日：2000-11-17
申请人： HITACHI CABLE
发明人： TAKAHASHI TADAHIRO , YAMAMOTO KENJI
IPC分类号： E04H12/08 , H02G1/02 , H02G7/00
摘要： PROBLEM TO BE SOLVED: To provide a wind noise preventing device using an angled material which is formed in the simplified structure, can be installed easily and can effectively prevent wind noise generated by the angled material. SOLUTION: An angled material 1 forming a framework structure such as a steel tower is provided with a cover member 2 formed cylindrically surrounding the angled material 1.

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