US3842584A - Strand for a wire cable of synthetic wires and synthetic fibres - Google Patents

Strand for a wire cable of synthetic wires and synthetic fibres Download PDF

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US3842584A
US3842584A US00369690A US36969073A US3842584A US 3842584 A US3842584 A US 3842584A US 00369690 A US00369690 A US 00369690A US 36969073 A US36969073 A US 36969073A US 3842584 A US3842584 A US 3842584A
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wires
strand
fibres
coarse
layer
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H Schmittman
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Bayer AG
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2065—Reducing wear
    • D07B2401/2075—Reducing wear externally

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  • This invention relates to a strand for a wire cable of synethetic wires and synthetic fibres, comprising a core which consists of a bundle of untwisted fine fibres arranged in parallel, a layer of coarse wires spirally surrounding the core, and at least one other layer of coarse wires concentrically and spirally surrounding the first layer.
  • Wire cables composed of such strands are used for pulling or lifting loads and for fastening goods, but they are mainly used on ships particularly in mooring ships in harbour. As the sizes of ship increase, so accordingly do the forces which have to be taken by mooring cables.
  • lt is an object of this invention to provide a strand for wire cables made of synthetic wires and synthetic fibres which will be able to take much greaterforces, namely up to 1000 t or more and which is constructed so that the cabling loss does not increase and the specific strength and breaking length can be kept constant, independent of the diameter of the cable.
  • the invention therefore provides a strand for a wire cable which comprises a core consisting of a bundle of untwisted synthetic fibres, a layer of coarse synthetic wires .spirally surrounding the core and at least one other layer of coarse wires concentrically and spirally surrounding the core, in which a layer of synthetic fibre bundles is arranged between the layers of coarse wires.
  • the invention is based on the finding that in wire cables made of synthetic fibres and synthetic wires, the cabling loss is not a function of the cable diameter but a function of the component wire section.
  • the definition that the breaking length of the cable decreases with increasing cable diameter would be valid for synthetic wire cables only if the cables were geometrically identical, i.e., if the percentage cross-section or percentage tensile strength of the central core, of the strand cores and of the wires were the same in all the cables.
  • the materials which may be used for wires and fibres are mainly polyamide but also include polyethylene, polypropylene, polyurethane, polyesters and polycarbonate.
  • a strand may also be made up of wires of dif ferent materials and, for example, the wires and fibres may be made of different synthetic materials.
  • N is the number of wires per strand
  • f is the ratio of the average specific weight of the fibre material to the average specific weight of the wire material.
  • the function V is shown in the accompanying FIG. 1 for various wires in the strand.
  • the strand according to the invention may be produced, for example, by passing a bundle of untwisted,
  • fine fibres arranged in parallel as the core of the strand through the centre of a stranding machine and at the same time laying coarse wires which have no internal twist spirally around this coreat the'stranding point.
  • This layer of coarse wires is surrounded by fine synthetic fibres placed in parallel and over this is placed a second layer of coarse wires by the same method as that used for laying the first layer.
  • Several of these strands, preferably 6 to 8, are then placed spirally, each with an internal twist, about a central fibre core to produce round cables or joined together to form graded cables.
  • the fibre bundles are arranged spirally.
  • the fibre bundles are arranged with their axes parallel to the axis of the strand, and'according to a third embodiment they are doubled and twisted.
  • the three varia tions are equivalent and the particular variation can in each case be selected according to the manufacturing facilities available.
  • Fibre bundles which are arranged spirally or with the axes of the fibres parallel to the axis of the strand may also be doubled and twisted. In that case, any load acting on the strand will be taken up uniformly by all the elements.
  • a protective twist is imparted to the fibre bundles. This method is well known and serves to facilitate the manufacturing process and prevent capillary splicing.
  • the coarse wires in the outermost layer at least are arranged in bundles placed spirally around a core of fibres or a wire.
  • This construction has the advantage that, in cables with a very large diameter, the individual wires in the layer of coarse wires can have a smaller diameter.
  • Another advantage is the resulting increased flexibility. of the cable.
  • filling twine is advantageously inserted between the bundles of coarse wires. The measure is known per 'se. It increases the strength of the cable and, by causing the formation of a sheet of fluff, it protects the cable against mechanical damage in use. I
  • .filling twines are inserted in the crest of the outermost layer of wires. These serve the same function as the twines inserted between the bundles of coarse wires. They prevent damage to the surface of the cable and in particular damage due to heat of friction.
  • FIG. 1 is a graph for the function V, defined by the equation supra, and which is described supra;
  • FIG. 2 is an embodiment of a strand according to the invention.
  • a layer 2 of coarse wires 3 is placed spirally around a core 1 which consists of a bundle of untwisted fine fibres arranged in parallel.
  • This layer of coarse wires 2 is surrounded by a layer 4 of fibre bundles 5.
  • These fibre bundles 5 are arranged spirally and doubled and twisted.
  • Round the fibre bundles 5 is a layer 6 of coarse wires 3 arranged spirally.
  • This layer is surrounded by a layer 7 of fibre bundles 8 which are arranged parallel to the axis and have a protective twist.
  • this layer is surrounded by a layer 9 of coarse wires 3 which are arranged in separate bundles 10 each with a core 11 of fibres.
  • the core 11 may alternatively consist of a wire.
  • Filling twines 12 are placed between the bundles 10 of coarse wires.
  • Filling twines 13 are also inserted between the crests of the outermost layer 9 of wire bundles 10. When the cable is in use, the filling twines 13 are spliced open to form a sheet of fluff which protects the surface of the cable against damage.
  • a strand according to the embodiment illustrated in FIG. 2 is composed of polyamide wires and polyamide fibres.
  • the density of the polyamide is 1.14 g/cm.
  • the wires have a specific strength of 48 kg/mm.
  • the fibres have a strength per unit titre of 8.5 g/dtex.
  • the structure of the strand is as follows (based on FIG. 2):
  • a strand having the construction of the example shown in FIG. 2 is composed of polypropylene wires and polypropylene fibres.
  • the density of the polypropylene is 0.9 g/cm.
  • the wires have a specific strength of 55 kg per mm
  • the fibres have a strength per unit titre of 6 g/dtex.
  • the structure of the strand is as follows (based on FIG. 2):
  • a strand according to the example shown in FIG. 2 is made up of polyester wires and polyester fibres.
  • the density of the polyester is 1.38 g/cm.
  • the high strength fibres have a strength per unit titre of 8.5 g/dtex.
  • the wires have a specific strength of 48 kg/mm
  • the structure of the strand is as follows (based on FIG. 2):
  • the total thickness of a strand is 22 332 dtex, made up of wir e amounting to 13 731 300 dtex and fibres amounting to 8 369 032 dtex.
  • the compositiori of the material, based on the thickness, is therefore 62 percent of wire and 38 percent of fibres.
  • Such strands are made up into a cable which has a central core of 46 101 000 dtex fibres.
  • the cable has a weight of 8,150 g/m, a cable tensile strength of 748,312 kg and a cable breaking length of 33.6 kilometers.
  • a strand for a wire cable which comprises a core comprising a bundle of untwisted synthetic fibres, a layer of coarse synthetic wires spirally surrounding the core and at least one other layer of coarse wires concentrically and spirally surrounding the core, in which a layer of synthetic fibre bundles is arranged between the layers of coarse wires.
  • a strand as claimed in claim 1 in which the core of untwisted fibres are arranged in parallel.
  • a strand as claimed in claim 1 in which the fibre bundles are arranged parallel to the axis between the layers of coarse wires.
  • a strand as claimed in claim 1 in which the fibre bundles arranged between the layers of coarse wires are twisted and doubled.
  • a strand as claimed in claim 1 in which the coarse wires in at least the outermost layer of the strand are arranged in spiral bundles each with a core.
  • a strand as claimed in claim 7 in which filling twines are inserted, between the bundles of coarse wires.
  • a strand as claimed in claim 7 in which filling twines are inserted between the crest of the outermost layer of wires.
  • a strand as claimed in claim 1 in which the wires are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate, and in which the fibres are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate.

Abstract

A wire cable strand which consists of a core of untwisted fine fibres arranged in parallel and at least two layers of course wires spirally surrounding the core, with a layer of fibre bundles arranged between these layers either sprally or parallel to the axis of the strand.

Description

United States Patent 1191 Schmittman Oct. 22, 1974 1 1 STRAND FOR A WIRE CABLE 0F [56] References Cited SYNTHETIC WIRES AND SYNTHETIC UNITED STATES PATENTS FIBRES 2,075,996 4/1937 Noyes 57/146 x I u 2,400,181 5/1946 Warren 57/140 R 1751 Inventor figyg g gg ggi m 2.591.628 4/1952 Snyder 57/140 BY 2 I 2,971,321 2/1961 Himmelfarb et a1. 57/140 R X [73] Assignee: Bayer Aktien'gesellschaft, 3.201931) 8/1952 Stirling 57/140 BY X Leverkusen, Germany I Primary ExaminerDonald E. Watkins [22] Filed" June 1973 Attorney, Agent, or FirmBurgess, 'Dinklage & [2]] App]. No.: 369,690 Sprung [30] Foreign Application Priority Data 1 ABS TRACT J 79 [972 German 1231968 A wire cable strand which consists of a core of ununc y twisted fine fibres arranged in parallel and at least two layers of course wires spirally surrounding the core, CCll. 57/I 35675b7/1 with a layer of fibre bundles arranged between these LM BY 46 layers either sprally or parallel to the axis of the 57/144, 145 Strand' 14 Claims, 2 Drawing Figures This invention relates to a strand for a wire cable of synethetic wires and synthetic fibres, comprising a core which consists of a bundle of untwisted fine fibres arranged in parallel, a layer of coarse wires spirally surrounding the core, and at least one other layer of coarse wires concentrically and spirally surrounding the first layer.
Wire cables composed of such strands are used for pulling or lifting loads and for fastening goods, but they are mainly used on ships particularly in mooring ships in harbour. As the sizes of ship increase, so accordingly do the forces which have to be taken by mooring cables.
According to the previous state of the art it has only been possible to manufacture wire and fibre cables with tensile strengths of up to about 250 t (metric tons). If attempts are made to exceed this value, the additional amount of material used for the cable does not result in any utilizable increase in the strength of the cable. The cabling loss then increases rapidly and the specific strength or breaking length decreases accordingly.
lt is an object of this invention to provide a strand for wire cables made of synthetic wires and synthetic fibres which will be able to take much greaterforces, namely up to 1000 t or more and which is constructed so that the cabling loss does not increase and the specific strength and breaking length can be kept constant, independent of the diameter of the cable.
According to the invention, this is achieved by arranging a layer of fibre bundles between the layers of coarse wires. The invention therefore provides a strand for a wire cable which comprises a core consisting of a bundle of untwisted synthetic fibres, a layer of coarse synthetic wires .spirally surrounding the core and at least one other layer of coarse wires concentrically and spirally surrounding the core, in which a layer of synthetic fibre bundles is arranged between the layers of coarse wires.
This measure reduces the damaging Hertzian surface pressures which the wires exert against each other when the cable is under load. The invention is based on the finding that in wire cables made of synthetic fibres and synthetic wires, the cabling loss is not a function of the cable diameter but a function of the component wire section. The definition that the breaking length of the cable decreases with increasing cable diameter would be valid for synthetic wire cables only if the cables were geometrically identical, i.e., if the percentage cross-section or percentage tensile strength of the central core, of the strand cores and of the wires were the same in all the cables. in fact, certain relationships exist between the percentage breaking loads of the wires and the diameter of the cable, that is to say that the cabling loss decreases with increasing proportion of the cables cores and of the layers of fibre bundles according to the invention which serve as buffer and at the same time as load bearing elements. The breaking load of wire cables made of synthetic fibres and synthetic wires can therefore be kept constant independently of the diameter of the cable.
The materials which may be used for wires and fibres are mainly polyamide but also include polyethylene, polypropylene, polyurethane, polyesters and polycarbonate. A strand may also be made up of wires of dif ferent materials and, for example, the wires and fibres may be made of different synthetic materials.
The more closely the ratio of the total thickness of the fibrous portion of a strand to the total thickness of all wires of a strand approaches a given value, the more effectively is the transverse pressure of the wires against each other eliminated. This ratio can be expressed approximately by the following formula:
where N is the number of wires per strand, f is the ratio of the average specific weight of the fibre material to the average specific weight of the wire material. The function V is shown in the accompanying FIG. 1 for various wires in the strand.
The strand according to the invention may be produced, for example, by passing a bundle of untwisted,
fine fibres arranged in parallel as the core of the strand through the centre of a stranding machine and at the same time laying coarse wires which have no internal twist spirally around this coreat the'stranding point. This layer of coarse wires is surrounded by fine synthetic fibres placed in parallel and over this is placed a second layer of coarse wires by the same method as that used for laying the first layer. Several of these strands, preferably 6 to 8, are then placed spirally, each with an internal twist, about a central fibre core to produce round cables or joined together to form graded cables.
According to a particular embodiment of the strands according to the invention, the fibre bundles are arranged spirally. According to another embodiment, the fibre bundles are arranged with their axes parallel to the axis of the strand, and'according to a third embodiment they are doubled and twisted. The three varia tions are equivalent and the particular variation can in each case be selected according to the manufacturing facilities available. Fibre bundles which are arranged spirally or with the axes of the fibres parallel to the axis of the strand may also be doubled and twisted. In that case, any load acting on the strand will be taken up uniformly by all the elements. According to another embodiment, a protective twist is imparted to the fibre bundles. This method is well known and serves to facilitate the manufacturing process and prevent capillary splicing.
According to another, special embodiment of the invention, the coarse wires in the outermost layer at least are arranged in bundles placed spirally around a core of fibres or a wire. This construction has the advantage that, in cables with a very large diameter, the individual wires in the layer of coarse wires can have a smaller diameter..Another advantage is the resulting increased flexibility. of the cable. In addition, filling twine is advantageously inserted between the bundles of coarse wires. The measure is known per 'se. It increases the strength of the cable and, by causing the formation of a sheet of fluff, it protects the cable against mechanical damage in use. I
According to another preferred embodiment,.filling twines are inserted in the crest of the outermost layer of wires. These serve the same function as the twines inserted between the bundles of coarse wires. They prevent damage to the surface of the cable and in particular damage due to heat of friction.
FIG. 1 is a graph for the function V, defined by the equation supra, and which is described supra; and
FIG. 2 is an embodiment of a strand according to the invention.
An example of a strand according to the invention is illustrated the accompanying drawings FIG. 2 and is described below. A layer 2 of coarse wires 3 is placed spirally around a core 1 which consists of a bundle of untwisted fine fibres arranged in parallel. This layer of coarse wires 2 is surrounded by a layer 4 of fibre bundles 5. These fibre bundles 5 are arranged spirally and doubled and twisted. Round the fibre bundles 5 is a layer 6 of coarse wires 3 arranged spirally. This layer is surrounded by a layer 7 of fibre bundles 8 which are arranged parallel to the axis and have a protective twist. Lastly, this layer is surrounded by a layer 9 of coarse wires 3 which are arranged in separate bundles 10 each with a core 11 of fibres. The core 11 may alternatively consist of a wire. Filling twines 12 are placed between the bundles 10 of coarse wires. Filling twines 13 are also inserted between the crests of the outermost layer 9 of wire bundles 10. When the cable is in use, the filling twines 13 are spliced open to form a sheet of fluff which protects the surface of the cable against damage.
EXAMPLE 1 A strand according to the embodiment illustrated in FIG. 2 is composed of polyamide wires and polyamide fibres. The density of the polyamide is 1.14 g/cm. The wires have a specific strength of 48 kg/mm. The fibres have a strength per unit titre of 8.5 g/dtex.
The structure of the strand is as follows (based on FIG. 2):
325 190 dtcx fibres 10 wires each with a diameter of 2.5 mm
783 475 dtex fibres 12 wires each with a diameter of 4.5 mm
3 498 399 dtcx fibres l2 bundles each composed of 4 wires with a diameter of4 mm each and 39 070 dtcx fibre core, no filling twine.
Central layer 1 Layer of coarse wires 2 Layer 4 of fibres Layer 6 of coarse wires Layer 7 of fibres Layer 9 of coarse wires EXAMPLE 2 g A strand having the construction of the example shown in FIG. 2 is composed of polypropylene wires and polypropylene fibres. The density of the polypropylene is 0.9 g/cm. The wires have a specific strength of 55 kg per mm The fibres have a strength per unit titre of 6 g/dtex.
The structure of the strand is as follows (based on FIG. 2):
113 572 dtex fibres 8 wires each 2.0 mm in diameter 341 000 dtex fibres 12 wires each 3.0 mm in diameter 1 246 300 dtex fibres 12 wires each 6 mm in diameter and 12 filling twines each composed of 000 dtex fibres.
Core 1 Layer 2 of coarse wires Layer 4 of fibres Layer 6 of coarse wires Layer 7 of fibres Layer 9 of coarse wires EXAMPLE 3 A strand according to the example shown in FIG. 2 is made up of polyester wires and polyester fibres. The density of the polyester is 1.38 g/cm. The high strength fibres have a strength per unit titre of 8.5 g/dtex. The wires have a specific strength of 48 kg/mm The structure of the strand is as follows (based on FIG. 2):
596 200 dtex fibres 10 wires each 3 mm in diameter 1 540 000 dtex fibres 14 wires each 5 mm in diameter 5 313 000 dtcx fibres l6 bundles each containing 4 wires 4 mm in diameter each and a fibre core of 39 070 dtex with 4 620 dtcx filling twine in the crest of each bundle.
Core 1 Layer 2 of coarse wires Layer 4 of fibres Layer 6 of coarse wires Layer 7 of fibres Layer 9 of coarse wires The total thickness of a strand is 22 332 dtex, made up of wir e amounting to 13 731 300 dtex and fibres amounting to 8 369 032 dtex. The compositiori of the material, based on the thickness, is therefore 62 percent of wire and 38 percent of fibres.
6 Such strands are made up into a cable which has a central core of 46 101 000 dtex fibres. The cable has a weight of 8,150 g/m, a cable tensile strength of 748,312 kg and a cable breaking length of 33.6 kilometers.
What we claim is:
1. A strand for a wire cable which comprises a core comprising a bundle of untwisted synthetic fibres, a layer of coarse synthetic wires spirally surrounding the core and at least one other layer of coarse wires concentrically and spirally surrounding the core, in which a layer of synthetic fibre bundles is arranged between the layers of coarse wires.
2. A strand as claimed in claim 1 in which the core of untwisted fibres are arranged in parallel.
3. A strand as claimed in claim 1 in which the fibre bundles are arranged spirally between the layers of coarse wires.
4. A strand as claimed in claim 1 in which the fibre bundles are arranged parallel to the axis between the layers of coarse wires.
5. A strand as claimed in claim 1 in which the fibre bundles arranged between the layers of coarse wires are twisted and doubled.
6. A strand as claimed in claim 1 in which the fibres bundles are provided with a protective twist.
7. A strand as claimed in claim 1 in which the coarse wires in at least the outermost layer of the strand are arranged in spiral bundles each with a core.
8. A strand as claimed in claim 7 in which filling twines are inserted, between the bundles of coarse wires.
9. A strand as claimed in claim 7 in which filling twines are inserted between the crest of the outermost layer of wires.
10. A strand as claimed in claim 1, in which the wires are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate, and in which the fibres are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate.
11. A strand as claimed in claim 10 in which the wires and fibres are made of polyamide.
12. A strand as claimed in claim 1 in which the wires and fibres are made of difierent materials 13. A strand as claimed in claim 1 in which wires are made of different materials.
14. A strand as claimed in claim 2 in which the fibre bundles are arranged spirally between the layers of coarse wires.

Claims (14)

1. A STRAND FOR A WIRE CABLE WHICH COMPRISES A CORE COMPRISING A BUNDLE OF UNTWISTED SYNTHETIC FIBERS, A LAYER OF COARSE SYNTHETIC WIRES SPIRALLY SURROUNDING THE CORE AND AT LEAST ONE OTHER LAYER OF CORSE WIRES CONCENTRICALLY AND SPIRALLY SURROUNDING THE CORE, IN WHICH A LAYER OF SYNTHETIC FIBRE BUNDLES IS ARRANGED BETWEEN THE LAYERS OF COARSE WIRES.
2. A strand as claimed in claim 1 in which the core of untwisted fibres are arranged in parallel.
3. A strand as claimed in claim 1 in which the fibre bundles are arranged spirally between the layers of coarse wires.
4. A strand as claimed in claim 1 in which the fibre bundles are arranged parallel to the axis between the layers of coarse wires.
5. A strand as claimed in claim 1 in which the fibre bundles arranged between the layers of coarse wires are twisted and doubled.
6. A strand as claimed in claim 1 in which the fibres bundles are provided with a protective twist.
7. A strand as claimed in claim 1 in which the coarse wires in at least the outermost layer of the strand are arranged in spiral bundles each with a core.
8. A strand as claimed in claim 7 in which filling twines are inserted, between the bundles of coarse wires.
9. A strand as claimed in claim 7 in which filling twines are inserted between the crest of the outermost layer of wires.
10. A strand as claimed in claim 1, in which the wires are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate, and in which the fibres are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate.
11. A strand as claimed in claim 10 in which the wires and fibres are made of polyamide.
12. A strand as claimed in claim 1 in which the wires and fibres are made of different materials
13. A strand as claimed in claim 1 in which wires are made of different materials.
14. A strand as claimed in claim 2 in which the fibre bundles are arranged spirally between the layers of coarse wires.
US00369690A 1972-06-29 1973-06-13 Strand for a wire cable of synthetic wires and synthetic fibres Expired - Lifetime US3842584A (en)

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DE2231968A DE2231968C3 (en) 1972-06-29 1972-06-29 Strand for a wire rope made of synthetic wires and synthetic fibers

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US4006289A (en) * 1974-08-16 1977-02-01 Consolidated Products Corporation Electromechanical cable deployable in a no-torque condition, and method
US4034547A (en) * 1975-08-11 1977-07-12 Loos August W Composite cable and method of making the same
US4085183A (en) * 1975-05-05 1978-04-18 Consolidated Products Corporation Method of making a strain member for use in an electromechanical cable
US4317000A (en) * 1980-07-23 1982-02-23 The United States Of America As Represented By The Secretary Of The Navy Contrahelically laid torque balanced benthic cable
US6266083B1 (en) * 1986-05-21 2001-07-24 Canon Kabushiki Kaisha Image pickup apparatus including interruption means for causing recordation of an electrical image signal in response to operation of a second trigger before completion of a predetermined step by a first trigger
US20020186436A1 (en) * 2001-06-08 2002-12-12 Sanjay Mani Method and apparatus for multiplexing in a wireless communication infrastructure
US20020191565A1 (en) * 2001-06-08 2002-12-19 Sanjay Mani Methods and systems employing receive diversity in distributed cellular antenna applications
US20040198453A1 (en) * 2002-09-20 2004-10-07 David Cutrer Distributed wireless network employing utility poles and optical signal distribution
US20080307723A1 (en) * 2007-05-16 2008-12-18 Smith Rory S Actively Damped Tension Member
US20120186851A1 (en) * 2011-01-24 2012-07-26 Michael Winterhalter Composite core conductors and method of making the same
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CN110678602A (en) * 2017-01-27 2020-01-10 法策股份公司钢丝绳厂 Longitudinal element, in particular for a traction device and/or a support device
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DE2853661C2 (en) * 1978-12-13 1983-12-01 Drahtseilwerk Saar GmbH, 6654 Kirkel Synthetic fiber rope
DE3478865D1 (en) * 1984-02-01 1989-08-10 Teufelberger Gmbh Rope formed of threads, yarns or twines made of textile fibrous material

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US4006289A (en) * 1974-08-16 1977-02-01 Consolidated Products Corporation Electromechanical cable deployable in a no-torque condition, and method
US4085183A (en) * 1975-05-05 1978-04-18 Consolidated Products Corporation Method of making a strain member for use in an electromechanical cable
US4034547A (en) * 1975-08-11 1977-07-12 Loos August W Composite cable and method of making the same
US4317000A (en) * 1980-07-23 1982-02-23 The United States Of America As Represented By The Secretary Of The Navy Contrahelically laid torque balanced benthic cable
US6266083B1 (en) * 1986-05-21 2001-07-24 Canon Kabushiki Kaisha Image pickup apparatus including interruption means for causing recordation of an electrical image signal in response to operation of a second trigger before completion of a predetermined step by a first trigger
US7127175B2 (en) * 2001-06-08 2006-10-24 Nextg Networks Method and apparatus for multiplexing in a wireless communication infrastructure
US20020191565A1 (en) * 2001-06-08 2002-12-19 Sanjay Mani Methods and systems employing receive diversity in distributed cellular antenna applications
US20020186436A1 (en) * 2001-06-08 2002-12-12 Sanjay Mani Method and apparatus for multiplexing in a wireless communication infrastructure
US20040198453A1 (en) * 2002-09-20 2004-10-07 David Cutrer Distributed wireless network employing utility poles and optical signal distribution
US20080307723A1 (en) * 2007-05-16 2008-12-18 Smith Rory S Actively Damped Tension Member
US8110050B2 (en) 2007-05-16 2012-02-07 Thyssenkrupp Elevator Capital Corporation Actively damped tension member
US9362021B2 (en) * 2011-01-24 2016-06-07 Gift Technologies, Llc Composite core conductors and method of making the same
US20120186851A1 (en) * 2011-01-24 2012-07-26 Michael Winterhalter Composite core conductors and method of making the same
CN109791817A (en) * 2016-09-29 2019-05-21 普睿司曼股份公司 Cable with lightweight stretching element
US20190228876A1 (en) * 2016-09-29 2019-07-25 Prysmian S.P.A. Cable with Lightweight Tensile Elements
US11189396B2 (en) * 2016-09-29 2021-11-30 Prysmian S.P.A. Cable with lightweight tensile elements
US11646132B2 (en) 2016-09-29 2023-05-09 Prysmian S.P.A. Cable with lightweight tensile elements
CN110678602A (en) * 2017-01-27 2020-01-10 法策股份公司钢丝绳厂 Longitudinal element, in particular for a traction device and/or a support device
CN110924198A (en) * 2019-12-05 2020-03-27 芜湖航天特种电缆厂股份有限公司 Cable filler and preparation method thereof

Also Published As

Publication number Publication date
NO142920B (en) 1980-08-04
DD104580A5 (en) 1974-03-12
GB1430849A (en) 1976-04-07
DE2231968C3 (en) 1980-11-13
NO142920C (en) 1980-11-12
CH566443A5 (en) 1975-09-15
LU67740A1 (en) 1973-08-16
ZA734403B (en) 1974-06-26
SE389134B (en) 1976-10-25
DK136223B (en) 1977-09-05
DK136223C (en) 1978-02-06
FR2191568A5 (en) 1974-02-01
BE801515A (en) 1973-12-27
NL7309041A (en) 1974-01-02
NL174172B (en) 1983-12-01
NL174172C (en) 1984-05-01
DE2231968A1 (en) 1974-01-24
JPS5753477B2 (en) 1982-11-12
FI51505C (en) 1977-01-10
ES416425A1 (en) 1976-03-01
JPS4948951A (en) 1974-05-11
DE2231968B2 (en) 1980-03-20
IT990720B (en) 1975-07-10
IE38693L (en) 1973-12-29
IE38693B1 (en) 1978-05-10
FI51505B (en) 1976-09-30

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