Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3676576 A
Publication typeGrant
Publication dateJul 11, 1972
Filing dateJul 6, 1970
Priority dateJul 7, 1969
Also published asDE2033675A1, DE2033675B2, DE2033675C3
Publication numberUS 3676576 A, US 3676576A, US-A-3676576, US3676576 A, US3676576A
InventorsDubernet Robert, Sabatie Michele
Original AssigneeAerospatiale
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Multiconductor stranded remote-control cable
US 3676576 A
Multiconductor cable comprising a plurality of metal wires of high unit tensile strength, at least two wires fulfilling wholly or in part the function of an electrical conductor, a core withstanding the mechanical forces to which the cable is subjected when it is unwound, certain of the multiple wires being grouped to form a multi-strand single-channel conductor in which the mechanical strength and the electrical resistance are locally distributed at distinct location, said cable receiving a plastic protective coating obtained by extrusion or impregnation.
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

[ 51 July 11,1972

174/128 UX 174/126 UX 2,055,948 9/1936 Selquist....... 2,067,405 1/1937 Mayne........

[$4] MULTICONDUCTOR STRANDED REMOTE-CONTROL CABLE [72] Inventors: Robert Dulles-net, Chatillon-SousPBagneux;

...l74/l28 ...174/1l3X ...l74/l13X 3,339,012 8/1967 Hutchins,.1r

3,324,233 6/1967 Bryant........ Michele Sim, (iarcnne-colombes. 3,433,890 3/1969 Gabriel etal both oi'Francc [73] Assignee: SocleteNationale lndustrlelle Aemepatlale,

3,261,908 7/1966 Roche et a1. .......l74/128 FOREIGN PATENTS OR APPLICATIONS Paris, France July 6, 1970 [21] App1.No.: $2,178

344,194 3/1931 GreatBritain......................... 229,058 2/1925 Great Britain....

[22] Filed:

Primary Examiner1.ewis H. Meyers Assistant Examiner-A. T. Grimley Attorney-Karl W. Flocks [30] Foreign Application Priority Data July 7, 1969 France.................1................6923008 ABSTRACT Multiconductor cable comprising a plurality of metal wires of at least two wires fulfilling wholly or in part the function of an electrical conductor, a core withstanding the mechanical forces to which the cable is subjected when it is unwound, certain of the multiple wires being -strand single-channel conductor in which the mechanical strength and the electrical resistance Rnmku R I n..

U m m m U m WL n u .1 m m 3 m m M a qdn U UH References Cited UNITED STATES PATENTS 12/1964 Schindler...............................

are locally distributed at distinct location, said cable receiving a plastic protective coating obtained by extrusion or impregnation.

174/116 SCllimgSDrlWlngflgures MULTICONDUCT OR STRANDED REMOTE-CONTROL CABLE The present invention relates to a stranded remote-control cable having a plurality of high tensile steel or alloy conductors, and more particularly to a remote-control cable in which the useful section of a conductor thereof is apportioned among a plurality of wires in order to improve the overall mechanical strength of the cable without affecting its lightness.

The transmission over wires of remote-control commands issuing from a fixed or mobile object such as an air, sea or land vehicle or a missile, offers, among other advantages by cornparison with wireless transmission means, that of being impervious to jamming.

Wires used for this technique must satisfy many requirements arising from a variety of electrical, mechanical, climatic, ageing and environmental difficulties.

Various trends have emerged, and techniques have gradually evolved from the single conductor to the composite conductor.

Initially cables consisted of a single light alloy (alumag) conductor wire with a diameter from 0. 15mm to 022mm, protected by a film of alumina deposited by anodic oxidation and sealed by dipping inspecial baths such as potassium bichromate baths. The danger of breakage of these wires as a result of the motions of command-guided missiles and the precariousness of the protection provided by the anodic surface treatment of the wire led operators to use steel wires with a diameter from 0.15mm. to 022mm, provided with external protection such as enamel or a cotton covering. The missile was accordingly connected to the guidance station, usually by means of at least two wires of this kind, each several thousand meters long. The wires were wound to form two spools carried by the missile, and each of these two-single-strand wires provided both the electric circuit and the mechanical strength required for the link. Thus, in the aeronautical field, this so-called two-spool technique was applied to the first generation of wire-guided missiles (the 85-10. 88-11 and 88-12 family of missiles). These wires had a diameter of 0. 1 5mm, 0.20mm and 022mm, and were enamelled and had a final diameter included between 0.2lmm and 0.30mm.

As the performance requirements imposed in the art became more stringent, new solutions were evolved that gave satisfaction in varying degrees. With the increasing effort in aeronautical engineering to achieve, among other things, greater strength coupled with smaller size and weight, the single-spool" solution with a single interconnecting wire was adopted for missile guidance. This resulted in the design of two conductor remote-control cables.

The electric circuit, which must do as little mechanical work as possible, invariably comprises two enamelled copper conductors which may or may not be cloth-covered.

The necessary mechanical strength is obtained by adding a textile structure of polyester, regenerated cellulose or silicone to the two conductors. The textile threads may either run parallel to the conductors or be stranded in with the latter.

Such stranding makes for a more even structure and has the advantage of reducing capacitive efl'ects.

An arrangement of the conductors to form parallel wires allows the conductors to be centered within the cable in order to better protect them during the unwinding process.

The assembly is then covered in order to ensure better overall cohesion. It may be further covered with a suitably adapted plastic covering, obtained either by ordinary coating or by through-impregnation (in vacuum or not), this latter application significantly improving electrical conductivity in the event of immersion in water.

Although this new technique resulted in very notable improvements, it was insufficiently reliable because of the low resistance to the effects of contact or environment, which was in turn due to the cascade type structure.

The present invention accordingly provides a new cable obtained by stranding a plurality of metal wires made of veryhigh-tensile steel or special alloys, for example, that perform wholly or partly the function of conductors and offer the various advantages already available in the prior art, but with less danger of rupturing.

Further particulars and advantages will emerge from the description which follows of several non-imitative exemplary embodiments of the invention, given with reference to the accompanying drawings, in which:

FIG. 1 is an overall view of a stranded cable according to the invention;

FIG. 2 is a section taken through the line IIII OF FIG. 1, and

FIGS. 3 to 5 are sectional views corresponding to FIG. 1, showing alternative embodiments.

Reference to FIG. 1 shows a cable 10 comprising a plurality of conducting wires 1 to 6 stranded about a core 7. The wires 1, 2, 3 of one group thereof are crossed by the same current, the return path of which is provided by the other group of wires 4, 5, 6 of the pair of conductors of single-channel cable 10.

The stranded cable 10 is encased in a coating or cover 8, or in both (a covering and an outer coating).

The wires 1 to 6 have a steel core and are coated with possibly electrolytic copper over the annular portion 9.

An insulating envelope 11, obtained by enamelling for example, is provided over the copper.

The core wire 7 is made of steel and its main function is to withstand the mechanical forces to which the cable is subjected as it is unwound.

Reference is next had to FIG. 3 for a similar arrangement of two pairs of conductors 12, 13 and I4, 15, respectively, wherein three aligned wires l6, l7 and 18 provide the overall mechanical strength therebetween, the complete cable being encased at 19 in a textile cover and coating.

It was found that a multiconductor cable according to this invention is satisfactory for transmitting commands to a command-guided missile even in the absence of copper. FIG. 4 shows four conductors arranged in two groups 20, 21 and 22, 23, respectively, these conductors being made of steel and covered with insulation 1 l.

Whereas the single wires of the prior art were wires of 0. l 5 to 022mm gauge, the clustered wires of the conductor pairs according to this invention are wires with diameters of less than 0.05 to 0.1mm, the unit electrical resistance of which is almost the same and the overall mechanical strength of which is considerably greater for substantially the same total cable weight.

The core 24 in the center of the wires is a textile core.

Reference is lastly had to the alternative embodiment of FIG. 5, which shows seven clustered steel conductors 25, insulated by enamelling and covering, the entire assembly being through-impregnated in vacuum subsequent to stranding, in accordance with conventional techniques.

The conducting wires 1 to 6 and 12 to 15 help to increase the mechanical strength of the cable stranded about the cores 7 and 16 to 18. These wires are galvanized, coppered or otherwise protected against corrosion. The wires 20 to 23 and 25 alone assure the electrical conductivity and the mechanical strength of the cable. Preferably, they are made of very-hightensile steel of good conductivity.

The wires are stranded sufficiently tightly in helical fashion, with a pitch of a few millimeters, over variable lengths that may extend to several thousand meters. This tightly wound configuration ensures cable homogeneity, so that in the event of rupture of one of the conductors the cable as a whole should retain its structural stability.

The stranded cable thereby obtained is possibly covered subsequently, in which case it is impregnated with a plastic which is thermosetting or thermoplastic whereby to obtain a structure possessing the required attributes of tightness, flexibility, electrical strength and overall gauge of the finished cable.

A few examples of stranded cables according to this invention are given below EXAMPLE I The cable includes three parallel steel wires 0.1mm in diameter, with a tensile strength included between 250 and 300 ltg/mm that assures in particular the mechanical strength of the cable.

These three single wires extend parallel to one another in the same plane and receive, on either side of said plane, parallel to themselves, two wires with a steel core of identical grade (of 0.05mm diameter), which are copper-coated (outer diameter: 0.07mm) and covered externally with an insulating coating (outer diameter: 0.1mm), after possible covering of said wires.

Subsequent to the precedingly described stranding operation, this set of seven wires is covered and impregnated to the final outer diameter (035mm to 0.40mm approximately). The cable obtained thus possesses the required mechanical characteristics:

Weight: 0.380 g/rn Resistance: 4.5 Q /m Mechanical strength: 8 daN Yield strength: 2 percent EXAMPLE 2 A single 0.1mm diameter steel wire assures the mechanical strength primarily and is surrounded by six 0.05mm diameter coppered and insulated steel core wires. Subsequent to stranding, the covering and the top impregnation coating are effected in the manner described precedingly. Such a cable has the following physical characteristics:

Mechanical strength: 8da N Weight: 0.360 g/meter Resistance: Q/m

EXAMPLE 3 The cable comprises in this case four single insulated steel wires arranged parallel to a textile core which contributes to the overall mechanical strength and which is made of polyester, cellulose or silicone. Subsequent to stranding, the entire assembly is covered and impregnation-coated.

It goes without saying that changes may be made in the embodiment hereinbefore described for exemplary purposes, without departing from the scope of the invention as set forth in the appended claims.

We claim:

1. A remote-control multiconductor cable for commandguided missiles comprising a steel core means to withstand the mechanical forces to which the cable is subjected when it is unwound, at least two electrical conductor wire means wound helically about said core means to fonn a multi-strand single channel conductor with mechanical strength and electrical resistance locally distributed at distinct locations,

each said electrical conductor wire means being a steel wire means having a diameter substantially in the range of 0.05mm to 0. lm and having a copper coating thereon and further coated with an insulating deposit whereby the electrical resistivity of said electrical conductor wire means is relatively lower and the mechanical strength and yield strength of the cable as a whole is relatively higher than that of a single wire of identical crosssection.

2. A cable according to claim 1, characterized in that the stranding is effected at a sufiiciently close pitch of the order of a few millimeters, whereby cable homogeneity is obtained by the tightness of the winding and the cable retains its structural stability in the event of rupturing of a strand.

3. A cable according to claim 1, characterized in that said cable has a covering and a plastic protective coating.

4. A cable according to claim 3, characterized in that the protective plastic is selected from the group consisting of polyvinyl chloride, nylon and silicone.

5. The remote-control cable according to claim 1 further characterized by the cable including said core means and said electrical conductor wire means having a weight of not more than .380 grams per meter.

1 l II t

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2055948 *Apr 8, 1935Sep 29, 1936Copperweld Steel CoElectrical conductor and process of making the same
US2067405 *Jul 5, 1934Jan 12, 1937Goodrich Co B FRubber impregnated metal cable and method of making same
US3163711 *Aug 19, 1959Dec 29, 1964Ludwig BolkowCable-controlled flying objects and cables therefor
US3261908 *Mar 26, 1964Jul 19, 1966Kaiser Aluminium Chem CorpComposite aluminum electrical conductor cable
US3324233 *Apr 8, 1965Jun 6, 1967Amphenol CorpCable complex employing strand twist reversal to absorb longitudinal expansion
US3339012 *Jul 29, 1963Aug 29, 1967Simplex Wire & Cable CoComposite stranded conductor cable
US3433890 *Feb 7, 1967Mar 18, 1969Communications Patents LtdSignal transmission cable
GB229058A * Title not available
GB344194A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3815054 *Jul 27, 1973Jun 4, 1974Rca CorpBalanced, low impedance, high frequency transmission line
US4037923 *Jun 25, 1974Jul 26, 1977Bicc LimitedOptical guides with compressible cellular material
US4059951 *May 3, 1976Nov 29, 1977Consolidated Products CorporationComposite strain member for use in electromechanical cable
US4073666 *Sep 9, 1976Feb 14, 1978Airco, Inc.Method for making an insulated superconductor and article produced thereby
US4467138 *Jan 17, 1983Aug 21, 1984Gk Technologies, Inc.Plural conductor communication wire
US5119457 *Aug 15, 1990Jun 2, 1992University Research Engineers & Associates, Inc.High-performance electric power cable and connector system
US5418332 *Jun 1, 1993May 23, 1995Moncrieff; J. PeterElectrical cable using combination of high resistivity and low resistivity materials as conductors
US5558794 *Oct 6, 1994Sep 24, 1996Jansens; Peter J.Coaxial heating cable with ground shield
US5574260 *Mar 6, 1995Nov 12, 1996W. L. Gore & Associates, Inc.Composite conductor having improved high frequency signal transmission characteristics
US5767441 *Jan 4, 1996Jun 16, 1998General Cable IndustriesPaired electrical cable having improved transmission properties and method for making same
US5777273 *Jul 26, 1996Jul 7, 1998Delco Electronics Corp.High frequency power and communications cable
US5834699 *Sep 10, 1997Nov 10, 1998The Whitaker CorporationCable with spaced helices
US5969229 *Sep 20, 1996Oct 19, 1999Nippondenso Co., Ltd.Lead wire for sensor
US6030346 *Apr 29, 1998Feb 29, 2000The Whitaker CorporationUltrasound imaging probe assembly
US6117083 *Apr 30, 1998Sep 12, 2000The Whitaker CorporationUltrasound imaging probe assembly
US6194666 *Mar 19, 1999Feb 27, 2001Chuo Hatsujo Kabushiki KaishaPush pull type control cable
US6254924Jan 8, 1998Jul 3, 2001General Cable Technologies CorporationPaired electrical cable having improved transmission properties and method for making same
US6286294Nov 2, 1999Sep 11, 2001Kinrei Machinery Co., Ltd.Wire stranding machine
US6318062Nov 13, 1998Nov 20, 2001Watson Machinery International, Inc.Random lay wire twisting machine
US6525271 *Jan 17, 2002Feb 25, 2003NexansFlexible electrical cable
US6982385 *Dec 4, 2003Jan 3, 2006Jeng-Shyong WuWire cable of electrical conductor forming of multiple metals or alloys
US7202417 *May 25, 2004Apr 10, 2007Sennco Solutions IncSecurity cable, a method for making the same and a method for securing an electronic device
US7592548 *Feb 6, 2007Sep 22, 2009Sennco Solutions, IncSecurity cable, a method for making the same and a method for securing an electronic device
US8814709Sep 22, 2011Aug 26, 2014Kathrein-Werke KgIntermodulation-resistant flexible shaft having electrically insulating coated wires
US8866017 *Feb 13, 2012Oct 21, 2014Junkosha, Inc.Transmission cable
US8916773May 21, 2013Dec 23, 2014Young Il MOKHigh conductivity wire and method of manufacturing the same
US20050121223 *Dec 4, 2003Jun 9, 2005Jeng-Shyong WuWire cable of electrical conductor forming of multiple metals or alloys
US20050263315 *May 25, 2004Dec 1, 2005Christopher MarszalekSecurity cable, a method for making the same and a method for securing an electronic device
US20070119612 *Mar 29, 2006May 31, 2007Telefex Automotive Germany GmbhWire cable
US20070169956 *Feb 6, 2007Jul 26, 2007Christopher MarszalekSecurity cable, a method for making the same and a method for securing an electronic device
US20110056727 *Sep 8, 2009Mar 10, 2011Daniel Dwain SandersCore cable
US20110199758 *Aug 18, 2011Ming-Hsiang YehStretch-resistant light-emitting or heat-emitting structure combined with battery
US20130333917 *Feb 13, 2012Dec 19, 2013Junkosha ,Inc.Transmission Cable
US20140318859 *Nov 23, 2012Oct 30, 2014Koninklijke Philps N.V.Cable for medical instruments
CN103339691A *Feb 13, 2012Oct 2, 2013株式会社润工社Transmission cable
CN103339691B *Feb 13, 2012Sep 2, 2015株式会社润工社传输电缆
DE19912512B4 *Mar 19, 1999Jan 3, 2008Chuo Hatsujo K.K., NagoyaDruck-Zug-Steuerkabel
DE102010046446A1 *Sep 24, 2010Mar 29, 2012Kathrein-Werke KgFlexibles und intermodulationsfestes Moment- und/oder Kraftübertragungselement in der Form einer biegsamen Welle oder eines Seils
DE102010046446B4 *Sep 24, 2010May 16, 2013Kathrein-Werke KgIntermodulationsfeste biegsame Welle
EP0179648A1 *Oct 22, 1985Apr 30, 1986Marcelo Luis DoderoElectro-conductive flat cable structure
EP1194933A1 *May 1, 2000Apr 10, 2002PGS Exploration (US), Inc.Seismic conductive rope lead-in cable
EP2267728A1 *May 6, 2009Dec 29, 2010Delphi Technologies, Inc.Electric cable and cable assembly
WO1993000687A1 *Jun 26, 1992Jan 7, 1993Attila BeseInterconnection cable for low frequency signal transmission
WO2011024262A1 *Aug 26, 2009Mar 3, 2011Taiyo Cabletec CorporationElectric cable
WO2012120993A1 *Feb 13, 2012Sep 13, 2012Junkosha Inc.Transmission cable
U.S. Classification174/113.00R, 174/70.00A, 174/114.00R, 174/128.1, 174/126.2
International ClassificationH01B7/00, H01B7/22, H01B7/18
Cooperative ClassificationH01B7/226, H01B7/0009
European ClassificationH01B7/00C, H01B7/22C