US3340353A - Double-shielded electric cable - Google Patents

Double-shielded electric cable Download PDF

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Publication number
US3340353A
US3340353A US523624A US52362466A US3340353A US 3340353 A US3340353 A US 3340353A US 523624 A US523624 A US 523624A US 52362466 A US52362466 A US 52362466A US 3340353 A US3340353 A US 3340353A
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shield
metallic
cable
metallic shield
jacket
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US523624A
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Raymond C Mildner
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Dow Chemical Co
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Dow Chemical Co
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806Protection against damage caused by corrosion
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20Metal tubes, e.g. lead sheaths
    • H01B7/202Longitudinal lapped metal tubes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20Metal tubes, e.g. lead sheaths
    • H01B7/208Metal tubes, e.g. lead sheaths composed of composite laminated metals
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/022Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/023Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound tape-conductors

Description

P 1957 R. c. MILDNER 3,340,353

DOUBLE-SHIELDED ELECTRI C CABLE Filed Jan. 28, 1966 Fa Z INVENTOR.

RaymondCfAfi/an er BY United States Patent 3,340,353 DOUBLE-SHIELDED ELECTRIC CABLE Raymond C. Mildner, Midland, Mich., assignor to The Dow Chemical Company, Midland, Mich., a corporation of Delaware Filed Jan. 28, 1966, Ser. No. 523,624 Claims. (Cl. 174106) This invention relates to improved electric cables and more particularly it relates to electric cables having an improved metallic shield construction.

It has become common practice in the fabrication of electric cables, particularly communication cables, to form an adherent or adhesive bond between the metallic shield and outer polymer jacket. Although such an adhesive bond construction offers advantages in producing cables which are substantially impervious to moisture, the same construction presents diificulties when such cables must be spliced and joined. If a strong bond exists between the polymer jacket and metallic shield, it is extremely diificult to separate the jacket from the shield to prepare the cable for jointing. The separation of the jacket from the shield in the field may be so time-consuming as to discourage the use of the bonded construction. Furthermore, the metallic shield is often damaged in the area of the joint thereby reducing the effectiveness of the cable. One method of avoiding the above problem has been to decrease the strength of the adhesive bond between the polymer jacket and metallic shield; however, this makes the bond less reliable and subject to deterioration with age so that the cable becomes less resistant to moisture penetration. It would therefore be highly desirable to produce an electric cable having a construction which would permit the removing of the outer polymer jacket without damaging the inner metallic shield.

In accordance with the present invention, there is provided an electric cable having an improved metallic shield construction which comprises, (1) a cable core of at least one insulated metallic conductor, (2) a first metallic shield surrounding the cable core, (3) a second metallic shield surrounding the first metallic shield, said second shield having a thickness less than that of the first metallic shield, and (4) an outer jacket of a thermoplastic material surrounding the second shield, the second shield being firmly and adhesively bonded to the outer jacket.

The invention will be better understood from the accompanying drawings and following description.

FIGURE 1 is a schematic view of a side elevation of a cable employing the double-shielded construction of the present invention.

FIGURE 2 is a schematic view of a side elevation of a cable construction similar to that of FIGURE 1 except that the shielding layers are corrugated.

Referring to the drawings, in FIGURE 1, a cable core 1 of conventional design having at least one insulated metal conductor is bound with a binder tape 2 and the tape 2 is surrounded by a plastic layer 3. The plastic layer 3 is surrounded by a first metallic shield 4 and is preferably bonded thereto. A second metallic shield 5, having a thickness less than that of the first shield 4, surrounds shield 4. An outer polymer jacket 7 of conventional design surrounds the second shield 4 and is ad hesively and co-extensively bonded thereto at the interface 6. The adhesive :bond may be obtained by using any suitable adhesive; however, it is preferred that an adhesive thermoplastic polymer be employed, e.g. a copolymer of ethylene and an ethylenically unsaturated carboxylic acid.

Although jacket 7 is securely bonded to shield 5, it may also be desirable to apply a thin layer of a viscous,

having a thickness less than that weakly adherent material, e.g. bitumen, between the first shield 4 and the second shield 5 to make the cable less susceptible to moisture penetration. The bitumen layer does not interfere with jointing operations and jacket 7 and shield 5 can be easily removed without damage to the inner shield 4.

In the drawing, the metallic shields 4 and 5 are shown as longitudinally folded with a simple overlapped seam, but it will be understood that other seams, e.g. double crimped, may be used and either or both of the shielding tapes may be helically laid.

In another embodiment of the present invention a cable is constructed the same as described above except that the plastic layer 3 is omitted and the metal shield 4 is folded directly over the binder tape 2.

In FIGURE 2, a cable core 11 of conventional design having at least one insulated metal conductor is bound with a binder tape 12 and the tap 12 is surrounded by a plastic layer 13. The plastic layer 13 is surrounded by a first metallic corrugated shield 14 and is preferably bonded thereto. A second metallic corrugated shield 15, of the first shield 14, surrounds shield 14. An outer polymer jacket 17 of conventional design surrounds the second shield 14 and is adhesively and co-extensively bonded thereto at the interface 16.

The metals employed in the form of plain or corrugated sheets or "foils as shielding elements for cables in accordance with the invention include aluminum, copper, copper-bronze, copper-clad steel, tin plated steel, galvanized iron and the like.

The outer polymer jacket is adhesively bonded to the adjacent inner metallic shield by means of an adhesive thermoplastic composition such as a copolymer of ethylene and an ethylenically unsaturated carboxylic acid. This adhesive composition provides an excellent bond between the jacket and metallic shield, said bond being highly resistant to moisture and, more important, the bond resists failure when subjected to uneven stresses. The outer polymer jacket may contain fillers such as carbon black where such fillers are desirable to semi-conducting jackets.

The particular double-shield cable construction of the present invention offers the important advantage, during jointing operations, of one being able to remove the outer jacket without damaging the inner metallic shield. In jointing such a cable, the outer jacket being bonded to the adjacent thin metallic shield can be easily removed from a cable end by making a transverse cut to the appropriate depth around the cable. Removal of the jacket and shield exposes the inner metallic shield so that the required connection to form a joint to an adjacent cable can be made.

The following examples are illustrative of the present invention and are not intended to limit the scope thereof.

EXAMPLE 1 A thin layer of high density polyethylene 50 mils thick, is extruded over a strand of multi-pair conductors. An aluminum tape 8 mils thick, having a thin layer of a copolymer of ethylene and acrylic acid (8 percent by weight) applied to one side thereof, is longitudinally folded around the layer of polyethylene with the copolymer layer innermost. The aluminum tape is subjected to heat of about C. to effect the bond between the aluminum and the polyethylene layer. A thin coating of bitumen about 1 mil thick is applied to the surface of the aluminum. An aluminum tape 2 mils thick, having a layer of a copolymer of ethylene and acrylic acid on one side thereof, is longitudinally folded about the bitumencovered aluminum layer, the copolymer layer being outermake, for example,

EXAMPLE 2 A strand of multi-pair conductors is wrapped with a binder tape to hold them together. A corrugated copper tape mils thick is longitudinally wrapped around the binder tape. A corrugated stainless steel tape 0.5 mil thick, having a thin layer of a copolymer of ethylene and acrylic applied to one side thereof, is longitudinally folded around the inner copper tape, the copolymer layer being outermost. An outer polymer jacket of polyethylene containing 25' percent by weight carbon black is extruded over the copolymer-coated stainless steel tape, the heat of extrusion causing the polyethylene to become bonded to the stainless steel tape through the intermediate copolymer layer.

In place of the particular metals employed in the foregoing examples, other metals as hereinbefore defined are used with substantially the same results.

What is claimed is:

1. An electric cable having an improved metallic shield construction which comprises (1) a cable core of at least one insulated metallic conductor, (2) a first metallic shield surrounding the cable core, (3) a second metallic shield surrounding the first metallic shield, said second shield having a thickness of less than one-half the thickness of the first metallic shield, there being an absence of bonding between said first and second metallic shields and (4) an outer jacket of a thermoplastic material surrounding 4 the second shield, the second shield being firmly and adhesively bonded to the outer jacket.

2 The cable according to claim 1 wherein the first and second metallic shields are of aluminum.

3. The cable according to claim 1 wherein the first and second metallic shields are corrugated.

4. The cable according to claim 3 wherein the first metallic shield is of copper and the second metallic shield is of stainless steel.

5. An electric cable according to claim 1 comprising (1) a cable core of at least one insulated metallic conductor, (2) a first metallic shield of aluminum 8 mils thick surrounding the cable core, (3) a second metallic shield of aluminum 2 mils thick surrounding the first aluminum shield, said second shield having a thin layer of a copolymer of ethylene and acrylic acid applied to the outermost surface thereof and (4) an outer jacket of polyethylene bonded to the second aluminum shield, said polyethylene containing 2.5 percent by weight conductive carbon black.

References Cited UNITED STATES PATENTS 2,589,700 3/1952 Johnstone 174-106 3,233,036 2/ 1966 Jachimowicz 174-36 X FOREIGN PATENTS 942,730 11/ 1963 Great Britain. 968,061 8/ 1964 Great Britain.

LEWIS H. MYERS, Primary Examiner.

H. HUBERFELD, Assistant Examiner.

Claims (1)

1. AN ELECTRIC CABLE HAVING AN IMPROVED METALLIC SHIELD CONSTRUCTION WHICH COMPRISES (1) A CABLE CORE OF AT LEAST ONE INSULATED METALLIC CONDUCTOR (2) A FIRST METALLIC SHIELD SURROUNDING THE CABLE CORE, (3) A SECOND METALLIC SHIELD SURROUNDING THE FIRST METALLIC SHIELD, SAID SECOND SHIELD HAVING A THICKNESS OF LESS THAN ONE-HALF THE THICKNESS OF THE FIRST METALLIC SHIELD, THERE BEING AN ABSENCE OF BONDING BETWEEN SAID FIRST AND SECOND METALLIC SHIELDS AND (4) AN OUTER JACKET OF A THERMOPLASTIC MATERIAL SURROUNDING THE SECOND SHIELD, THE SECOND SHIELD BEING FIRMLY AND ADHESIVELY BONDED TO THE OUTER JACKET.
US523624A 1966-01-28 1966-01-28 Double-shielded electric cable Expired - Lifetime US3340353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US523624A US3340353A (en) 1966-01-28 1966-01-28 Double-shielded electric cable

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US523624A US3340353A (en) 1966-01-28 1966-01-28 Double-shielded electric cable
FR90491A FR1507698A (en) 1966-01-28 1967-01-10 Electric cable with double sheath
NL6700700A NL6700700A (en) 1966-01-28 1967-01-17
DE19671615949 DE1615949A1 (en) 1966-01-28 1967-01-17 Electric cable with double shield
GB394667A GB1112816A (en) 1966-01-28 1967-01-26 Double-shielded electric cable
BE693288D BE693288A (en) 1966-01-28 1967-01-27

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US523624A Expired - Lifetime US3340353A (en) 1966-01-28 1966-01-28 Double-shielded electric cable

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BE (1) BE693288A (en)
DE (1) DE1615949A1 (en)
FR (1) FR1507698A (en)
GB (1) GB1112816A (en)
NL (1) NL6700700A (en)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534149A (en) * 1966-12-06 1970-10-13 Bell Telephone Labor Inc Communication cable systems
US3564110A (en) * 1966-12-06 1971-02-16 Bell Telephone Labor Inc Electrical cables
US3638306A (en) * 1970-09-24 1972-02-01 Bell Telephone Labor Inc Method of making a communications cable
US3643008A (en) * 1970-10-06 1972-02-15 Whitney Blake Co Shielded cable construction providing for an internal connection to ground
US3643007A (en) * 1969-04-02 1972-02-15 Superior Continental Corp Coaxial cable
US3648201A (en) * 1968-11-08 1972-03-07 Telefunken Patent Plastic covered flexible waveguide formed from a metal coated dielectric layer
US3673315A (en) * 1970-09-08 1972-06-27 Belden Corp Shielded cable
US3711621A (en) * 1971-02-18 1973-01-16 Gen Cable Corp Moisture block in sheathed telephone cables
US4130450A (en) * 1975-11-12 1978-12-19 General Cable Corporation Method of making extruded solid dielectric high voltage cable resistant to electrochemical trees
US4262162A (en) * 1978-07-14 1981-04-14 Kabel-Und Metallwerke Gutehoffnungshuette Ag Composite corrugated electrical cables
US4328394A (en) * 1981-01-14 1982-05-04 Bell Telephone Laboratories, Inc. Bonded sheath cable
US4398058A (en) * 1980-03-27 1983-08-09 Kabelmetal Electro Gmbh Moisture-proofing electrical cable
US4408089A (en) * 1979-11-16 1983-10-04 Nixon Charles E Extremely low-attenuation, extremely low radiation loss flexible coaxial cable for microwave energy in the gigaHertz frequency range
US4439632A (en) * 1981-01-14 1984-03-27 Western Electric Co., Inc. Bonded sheath cable
DE3315588A1 (en) * 1983-04-29 1984-10-31 Herbert Prof Prenzlau Heavy-duty cable
US4482413A (en) * 1983-08-31 1984-11-13 At&T Technologies, Inc. Methods of and apparatus for forming strips of non-metallic and metallic material into tubular covers having overlapped seams
US4487660A (en) * 1980-10-31 1984-12-11 Electric Power Research Institute Multiple wall structure for flexible cable using tubular and spiral corrugations
US4487641A (en) * 1983-11-15 1984-12-11 At&T Technologies, Inc. Methods of and apparatus for making a rodent and lighting protective cable sheath system
US4510346A (en) * 1983-09-30 1985-04-09 At&T Bell Laboratories Shielded cable
US4694122A (en) * 1986-03-04 1987-09-15 Cooper Industries, Inc. Flexible cable with multiple layer metallic shield
US4835394A (en) * 1987-07-31 1989-05-30 General Electric Company Cable assembly for an electrical signal transmission system
US4973794A (en) * 1987-07-31 1990-11-27 General Electric Company Cable assembly for an electrical signal transmission system
US5146046A (en) * 1991-02-28 1992-09-08 At&T Bell Laboratories Cable having waterblocking provisions between layers of relatively rigid and supple materials
US5389736A (en) * 1992-10-29 1995-02-14 Kabelmetal Electro Gmbh Power and control cable with a two layer metallic sheath for marine applications
US5926949A (en) * 1996-05-30 1999-07-27 Commscope, Inc. Of North Carolina Method of making coaxial cable
US5949018A (en) * 1996-12-23 1999-09-07 Commscope, Inc. Of North Carolina Water blocked shielded coaxial cable
US6201190B1 (en) * 1998-09-15 2001-03-13 Belden Wire & Cable Company Double foil tape coaxial cable
US6246006B1 (en) * 1998-05-01 2001-06-12 Commscope Properties, Llc Shielded cable and method of making same
US6288372B1 (en) 1999-11-03 2001-09-11 Tyco Electronics Corporation Electric cable having braidless polymeric ground plane providing fault detection
US6326551B1 (en) 1997-08-14 2001-12-04 Commscope Properties, Llc Moisture-absorbing coaxial cable and method of making same
US6337441B1 (en) 1997-01-21 2002-01-08 Koakkus Kabushiki Kaisha Shielded multiconductor cable and manufacturing method therefor
US6342677B1 (en) * 1999-05-25 2002-01-29 Trilogy Communications, Inc. High frequency cable having a dual-layer structure
US6384337B1 (en) 2000-06-23 2002-05-07 Commscope Properties, Llc Shielded coaxial cable and method of making same
US6667440B2 (en) 2002-03-06 2003-12-23 Commscope Properties, Llc Coaxial cable jumper assembly including plated outer conductor and associated methods
US20080190643A1 (en) * 2004-04-27 2008-08-14 Perelli & C.S.P.A. Process for Manufacturing a Cable Resistant to External Chemical Agents
EP2312591A1 (en) * 2009-08-31 2011-04-20 Nexans Fatigue resistant metallic moisture barrier in submarine power cable
US20130063129A1 (en) * 2011-09-09 2013-03-14 Subramanyam Satyasurya Chamarti Sensor devices and methods for use in sensing current through a conductor
US8829888B2 (en) 2011-09-09 2014-09-09 General Electric Company Sensor devices and methods for use in sensing current through a conductor
CN104167254A (en) * 2014-09-03 2014-11-26 中利科技集团股份有限公司 Double-sheath high voltage connecting cable used in electric vehicle and provided with ultra-soft aluminum conductor and method for manufacturing double-sheath high voltage connecting cable
CN104167251A (en) * 2014-09-03 2014-11-26 中利科技集团股份有限公司 High-voltage connecting cable provided with ultra-soft aluminum conductor and used in electric automobile and manufacturing method of high-voltage connecting cable
US8912807B2 (en) 2011-09-09 2014-12-16 General Electric Company Sensor devices and methods for use in sensing current through a conductor
US9075091B2 (en) 2011-09-09 2015-07-07 General Electric Company Sensor devices and methods for use in sensing current through a conductor
US9081040B2 (en) 2011-09-09 2015-07-14 General Electric Company Sensor devices and methods for use in sensing current through a conductor
WO2015149825A1 (en) * 2014-03-31 2015-10-08 Abb Technology Ltd Electric power cable and process for the production of electric power cable
US20150287501A1 (en) * 2012-10-26 2015-10-08 Huber+Suhner Ag Microwave cable and method for producing and using such a microwave cable
US9304149B2 (en) 2012-05-31 2016-04-05 Pulse Electronics, Inc. Current sensing devices and methods
US9664711B2 (en) 2009-07-31 2017-05-30 Pulse Electronics, Inc. Current sensing devices and methods
US9671434B2 (en) 2014-08-08 2017-06-06 Aclara Meters Llc Sensor devices and methods for use in sensing current through a conductor
US9823274B2 (en) 2009-07-31 2017-11-21 Pulse Electronics, Inc. Current sensing inductive devices
US10283238B1 (en) 2018-03-19 2019-05-07 Te Connectivity Corporation Electrical cable
US10283240B1 (en) 2018-03-19 2019-05-07 Te Connectivity Corporation Electrical cable
US10304592B1 (en) 2018-03-19 2019-05-28 Te Connectivity Corporation Electrical cable

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US3590141A (en) * 1969-02-17 1971-06-29 Dow Chemical Co Electric cable having improved resistance to moisture

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GB942730A (en) * 1962-07-30 1963-11-27 Standard Telephones Cables Ltd Electric cables
GB968061A (en) * 1963-01-02 1964-08-26 Pirelli General Cable Works Improvements in or relating to screened insulated electric conductors
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US2589700A (en) * 1949-07-16 1952-03-18 Western Electric Co Electric cable sheathing
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GB968061A (en) * 1963-01-02 1964-08-26 Pirelli General Cable Works Improvements in or relating to screened insulated electric conductors
US3233036A (en) * 1963-11-01 1966-02-01 Gen Cable Corp Corrosion proof shielding tape for shielding telephone cables

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534149A (en) * 1966-12-06 1970-10-13 Bell Telephone Labor Inc Communication cable systems
US3564110A (en) * 1966-12-06 1971-02-16 Bell Telephone Labor Inc Electrical cables
US3648201A (en) * 1968-11-08 1972-03-07 Telefunken Patent Plastic covered flexible waveguide formed from a metal coated dielectric layer
US3643007A (en) * 1969-04-02 1972-02-15 Superior Continental Corp Coaxial cable
US3673315A (en) * 1970-09-08 1972-06-27 Belden Corp Shielded cable
US3638306A (en) * 1970-09-24 1972-02-01 Bell Telephone Labor Inc Method of making a communications cable
US3643008A (en) * 1970-10-06 1972-02-15 Whitney Blake Co Shielded cable construction providing for an internal connection to ground
US3711621A (en) * 1971-02-18 1973-01-16 Gen Cable Corp Moisture block in sheathed telephone cables
US4130450A (en) * 1975-11-12 1978-12-19 General Cable Corporation Method of making extruded solid dielectric high voltage cable resistant to electrochemical trees
US4262162A (en) * 1978-07-14 1981-04-14 Kabel-Und Metallwerke Gutehoffnungshuette Ag Composite corrugated electrical cables
US4408089A (en) * 1979-11-16 1983-10-04 Nixon Charles E Extremely low-attenuation, extremely low radiation loss flexible coaxial cable for microwave energy in the gigaHertz frequency range
US4398058A (en) * 1980-03-27 1983-08-09 Kabelmetal Electro Gmbh Moisture-proofing electrical cable
US4487660A (en) * 1980-10-31 1984-12-11 Electric Power Research Institute Multiple wall structure for flexible cable using tubular and spiral corrugations
US4328394A (en) * 1981-01-14 1982-05-04 Bell Telephone Laboratories, Inc. Bonded sheath cable
US4439632A (en) * 1981-01-14 1984-03-27 Western Electric Co., Inc. Bonded sheath cable
DE3315588A1 (en) * 1983-04-29 1984-10-31 Herbert Prof Prenzlau Heavy-duty cable
US4482413A (en) * 1983-08-31 1984-11-13 At&T Technologies, Inc. Methods of and apparatus for forming strips of non-metallic and metallic material into tubular covers having overlapped seams
US4510346A (en) * 1983-09-30 1985-04-09 At&T Bell Laboratories Shielded cable
US4487641A (en) * 1983-11-15 1984-12-11 At&T Technologies, Inc. Methods of and apparatus for making a rodent and lighting protective cable sheath system
US4694122A (en) * 1986-03-04 1987-09-15 Cooper Industries, Inc. Flexible cable with multiple layer metallic shield
US4835394A (en) * 1987-07-31 1989-05-30 General Electric Company Cable assembly for an electrical signal transmission system
US4973794A (en) * 1987-07-31 1990-11-27 General Electric Company Cable assembly for an electrical signal transmission system
US5146046A (en) * 1991-02-28 1992-09-08 At&T Bell Laboratories Cable having waterblocking provisions between layers of relatively rigid and supple materials
US5389736A (en) * 1992-10-29 1995-02-14 Kabelmetal Electro Gmbh Power and control cable with a two layer metallic sheath for marine applications
US5926949A (en) * 1996-05-30 1999-07-27 Commscope, Inc. Of North Carolina Method of making coaxial cable
US5959245A (en) * 1996-05-30 1999-09-28 Commscope, Inc. Of North Carolina Coaxial cable
US6137058A (en) * 1996-05-30 2000-10-24 Commscope, Inc. Of North Carolina Coaxial cable
US5949018A (en) * 1996-12-23 1999-09-07 Commscope, Inc. Of North Carolina Water blocked shielded coaxial cable
US6337441B1 (en) 1997-01-21 2002-01-08 Koakkus Kabushiki Kaisha Shielded multiconductor cable and manufacturing method therefor
US6326551B1 (en) 1997-08-14 2001-12-04 Commscope Properties, Llc Moisture-absorbing coaxial cable and method of making same
US6246006B1 (en) * 1998-05-01 2001-06-12 Commscope Properties, Llc Shielded cable and method of making same
US6201190B1 (en) * 1998-09-15 2001-03-13 Belden Wire & Cable Company Double foil tape coaxial cable
US6342677B1 (en) * 1999-05-25 2002-01-29 Trilogy Communications, Inc. High frequency cable having a dual-layer structure
US6288372B1 (en) 1999-11-03 2001-09-11 Tyco Electronics Corporation Electric cable having braidless polymeric ground plane providing fault detection
US6384337B1 (en) 2000-06-23 2002-05-07 Commscope Properties, Llc Shielded coaxial cable and method of making same
US6667440B2 (en) 2002-03-06 2003-12-23 Commscope Properties, Llc Coaxial cable jumper assembly including plated outer conductor and associated methods
US20040123999A1 (en) * 2002-03-06 2004-07-01 Commscope Properties, Llc Coaxial cable jumper assembly including plated outer conductor and associated methods
US7127806B2 (en) 2002-03-06 2006-10-31 Commscope Properties, Llc Method for marking coaxial cable jumper assembly including plated outer assembly
US20080190643A1 (en) * 2004-04-27 2008-08-14 Perelli & C.S.P.A. Process for Manufacturing a Cable Resistant to External Chemical Agents
US7601915B2 (en) * 2004-04-27 2009-10-13 Prysmian Cavi E Sistemi Energia S.R.L. Process for manufacturing a cable resistant to external chemical agents
US20100000759A1 (en) * 2004-04-27 2010-01-07 Prysmian Cavi E Sistemi Energia S.R.L. Process for manufacturing a cable resistant to external chemical agents
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Also Published As

Publication number Publication date
GB1112816A (en) 1968-05-08
NL6700700A (en) 1967-07-31
BE693288A (en) 1967-07-27
FR1507698A (en) 1967-12-29
DE1615949A1 (en) 1970-09-10

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