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1. 发明专利

JPH08185736A MANUFACTURE OF TWO-CORE CIRCULAR CABLE 失效
公开(公告)号：JPH08185736A
公开(公告)日：1996-07-16
申请号：JP33709294
申请日：1994-12-27
申请人： HITACHI CABLE
发明人： TANAKA TOSHIMITSU , TANJI TSUTOMU , KASHIWAZAKI KATSUMI
IPC分类号： H01B9/00 , H01B13/22
摘要： PURPOSE: To form a conductor having a crescent cross sectional shape, form an insulated core wire flatting the cover at the abdomen of the semicircular conductor, put the flat sections together to form a core having a circular cross sectional shape, and obtain the manufacturing method of a two-core circular cable. CONSTITUTION: A cable conductor 1 having a crescent cross sectional shape is used, an insulator 2 is extrusion-covered on its outer periphery by a circular die to form an insulated core wire having a semicircular cross sectional shape, and flat sections of two insulated core wires are connected to form a core having a circular outer shape. A sheath 4 is covered on the outer periphery. The conductors 1 constituting a two-core circular cable are formed into the crescent cross sectional shape.

2. 发明专利

JPH0741256A DRUM WITH COLLAR 失效
公开(公告)号：JPH0741256A
公开(公告)日：1995-02-10
申请号：JP19112693
申请日：1993-08-02
申请人： HITACHI CABLE
发明人： HANAWA YASUO , TANAKA TOSHIMITSU
IPC分类号： B65H75/14 , B65H75/18 , B65H75/22
摘要： PURPOSE:To provide a drum provided with a collar capable of minimizing the kind of drums, and minimizing the size of the place to keep drums and the carriage space. CONSTITUTION:A drum is provided with a square body part 2 when viewed from the side of the drum and four similar collar parts 1 where the side surface is cut into the fylfot shape along the side of the square body part. The collar parts 1 are assembled while being slid into a body side collar inserting port 3 integrated with the body part 2. When four collar parts (on one side) are inserted, the collar parts 1 are fixed to each other by bolts and nuts 5.

3. 发明专利

JPH06239534A STORAGE SPACE MINIMIZING DRUM 失效
公开(公告)号：JPH06239534A
公开(公告)日：1994-08-30
申请号：JP4879293
申请日：1993-02-16
申请人： HITACHI CABLE
发明人： HANAWA YASUO , TANAKA TOSHIMITSU
IPC分类号： B65H75/14
摘要： PURPOSE:To provide winding frames for a general purpose electric wire which are stacked to minimize their storage space. CONSTITUTION:A drum being a winding frame for packaging an electric wire comprising a drum barrel 4 and flanges 2 and 3 arranged on both sides is formed so that a groove 5 for inserting a flange having width slightly wider than the thicknesses of the flanges 2 and 3 is formed in the roots of the flanges 2 and 3 of the drum barrel 4; and the flanges 2 and 3 of the other drum are inserted in the groove 5 of one drum and the drums can be stacked in a state that the drum barrels 4 are brought into contact with each other other.

4. 发明专利

JPH0460408A APPARATUS FOR AUTOMATICALLY MEASURING OFFSET SIZE OF CABLE 失效
公开(公告)号：JPH0460408A
公开(公告)日：1992-02-26
申请号：JP16974690
申请日：1990-06-29
申请人： HITACHI CABLE
发明人： TANAKA TOSHIMITSU
IPC分类号： G01B21/02
摘要： PURPOSE:To enable correct and automatic measurement of an offset size including a bend radius by using a hung-type guide carriage which runs on a cable itself which is an object to be measured and mounting a light gyro angle sensor on the carriage. CONSTITUTION:A hung-type guide carriage 3 is hung from a cable 1 by vertical guide rollers 5a, 5b, and an angle sensor housing box 7 is placed below the cable 1 with a predetermined distance. When a driver 12 is started, the carriage 3 runs on an offset part of the cable 1 at a predetermined speed with the box 7 mounted and correctly follows a solid shape of the part. As a result, necessary angle information of an offset size is continuously output from the angle sensor, while distance information corresponding to the angle information is continuously output from a travel distance detector. Therefore, after the output information is converted into a digital signal, the signal is calculated, thereby allowing the offset size including a bend radius to be measured correctly and automatically.

5. 发明专利

JPH03126748A POLYVINYL CHLORIDE COMPOSITION 失效
公开(公告)号：JPH03126748A
公开(公告)日：1991-05-29
申请号：JP26563089
申请日：1989-10-12
申请人： HITACHI CABLE
发明人： KATO YOSHIHISA , KUSANO HARUO , TANAKA TOSHIMITSU , SASAKI NOBORU
IPC分类号： C08K3/26 , C08K3/24 , C08K5/10 , C08K5/36 , C08L27/06
摘要： PURPOSE:To obtain the subject composition with remarkably high thermal stability and suppressed generation of hydrogen chloride gas while maintaining flame retardance and foaming and carbonizing properties by blending an ester- based plasticizer with an antimony-based and zinc-based flame retardants, calcium carbonate and lead-based stabilizer. CONSTITUTION:A composition obtained by blending 100 pts.wt. polyvinyl chloride having 1500-4000 average polymerization degree with 40-80 pts.wt. ester- based plasticizer, 10-50 pts.wt. antimony-based flame retardant, 5-40 pts.wt. zinc-based flame retardant, 20-80 pts.wt. calcium carbonate (the total amount of the aforementioned three components is >=100 pts.wt.) and 5-20 pts.wt. lead- based stabilizer containing at least 1 pt.wt. tribasic lead maleate sulfate. A zinc-based flame retardant coated with an alkaline earth metal compound selected from oxides, hydroxides and basic carbonates of alkali earth metals is used as the zinc-based flame retardant.

6. 发明专利

JPS6392207A METHOD OF INSTALLING CABLE IN VERTICAL CONDUIT 失效
公开(公告)号：JPS6392207A
公开(公告)日：1988-04-22
申请号：JP23506186
申请日：1986-10-02
申请人： HITACHI CABLE
发明人： TANAKA TOSHIMITSU , TOMITA HIROYASU
IPC分类号： H02G7/00 , H02G1/02 , H02G1/06 , H02G9/00

7. 发明专利

JP2001086633A HEAT RESTRAINING FOR SHEATH INTERRUPTER 失效
公开(公告)号：JP2001086633A
公开(公告)日：2001-03-30
申请号：JP25596199
申请日：1999-09-09
申请人： HITACHI CABLE
发明人： TANAKA TOSHIMITSU
IPC分类号： H02G15/08 , H02G15/00
摘要： PROBLEM TO BE SOLVED: To provide a heat restraining method for a sheath interrupter, capable of effectively restraining the heat generated at the external semi-conductive layer of a CV cable. SOLUTION: This heat restraining method for sheath interrupters S is provided with insulation tubes 5 positioned at the isolation parts 4 of metallic shielding layers 2 of CV cables 1, and protective copper pipes 6 for cross-bond grounding the end parts of the metallic shielding layers 2, wherein the phases of voltages induced at the insulation tubes 5 are measured as necessary, and the voltages of the phase and an opposite phase are applied in between the insulation tubes 5 to restrain induced voltage. It is thus possible to restrain the heat generation of the external semi-conductive layer 13 of the CV cable 1 until it becomes roughly zero and ensure the transmission capacity of the CV cable 1 itself.

8. 发明专利

JPH0826601A DRUM WITH RACK 失效
公开(公告)号：JPH0826601A
公开(公告)日：1996-01-30
申请号：JP16085194
申请日：1994-07-13
申请人： HITACHI CABLE
发明人： TANAKA TOSHIMITSU
IPC分类号： B65H75/28
摘要： PURPOSE:To satisfy both requirements including the necessity to draw out the winding start end of a cable to the outer side, and the force to maximize the cable winding capacity when racks are made unnecessary, by providing the racks so that the cable winding start end is loaded on the inner surface of the frames at both ends of the winding drum of the cable so as to draw out it to the outer side. CONSTITUTION:In case of an insulation test or the like, for example, a rack unit 4 is installed to a frame 3, and the winding start end 5A is loaded on the rack unit 4 lest the end 5A should be buried in a cable 5 wound on a drum, and it is drawn out to the outer side. Then the winding start end 5A and the winding finish end 5B are connected to a voltage source for insulation test, and the cable 5 other than the winding start end 5A and the winding finish end 5B is soaked in the water together with the drum 1, so as to carry out the pressure resisting test. And when the cable 5 is rewound and shipped after the test, the drum 1 from which the rack unit 4 is removed is used for rewinding purpose, and thereby, the cable 5 can be wound on the drum 1 at the maximum winding capacity without receiving the disturbance of existing of the rack unit 4.

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