US3379821A - Shielded electrical cable - Google Patents

Shielded electrical cable Download PDF

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Publication number
US3379821A
US3379821A US427435A US42743565A US3379821A US 3379821 A US3379821 A US 3379821A US 427435 A US427435 A US 427435A US 42743565 A US42743565 A US 42743565A US 3379821 A US3379821 A US 3379821A
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US
United States
Prior art keywords
strip
jacket
polyethylene
cable
shielding layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US427435A
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English (en)
Inventor
Oscar G Garner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Cable Corp
Original Assignee
General Cable Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Cable Corp filed Critical General Cable Corp
Priority to US427435A priority Critical patent/US3379821A/en
Priority to FR37751A priority patent/FR1453587A/fr
Priority to GB48391/65A priority patent/GB1133603A/en
Priority to DE1690782A priority patent/DE1690782C3/de
Priority to ES0321953A priority patent/ES321953A1/es
Priority to CH81366A priority patent/CH444248A/de
Application granted granted Critical
Publication of US3379821A publication Critical patent/US3379821A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
    • H01B13/2686—Pretreatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/022—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.

Definitions

  • This invention relates to improvements in shielded and jacketed electrical cables. More particularly the invention relates to such cables in which the shield comprises a metallic strip, coextensive in length with the cable core, which is folded about the core into the form of a tube, and in which there is an outer jacket of polyethylene extruded over the tubular shield so formed.
  • the metallic strip conventionally is corrugated transversely prior to being folded about the cable core in order to give greater flexibility to the cable and to permit bending of the completed cable without wrinkling or rupture of the shielding layer,
  • the longitudinal edges of the folded metallic strip overlap each other slightly to insure complete coverage of the enclosed cable core.
  • the polyethylene jacket is extruded over the tubular shield at an elevated temperature, for example in the range of 400-450 F. for high molecular weight polyethylene and for extrusion speeds of 50 feet per minute, and up. As the extruded polyethylene jacket cools the polyethylene contracts and tends to squeeze the tubular shield down firmly onto the cable core.
  • Telephone cable of this construction is known as alpeth cable and is described more fully in the F. W. Horn and R. B. Ramsey paper, Bell System Cable Sheath Problems and Designs, in AIEE Proceedings, 1951, volume 70.
  • the cooling proceeds from the outer surface of the jacket inwardly and the resulting shrinkage of the jacket forces the polyethylene into close engagement with the corrugated surface of the folded strip and then causes the tubular shield to be partially collapsed by the sliding of the overlapping edges of the strip relative to each other.
  • This collapse of the tubular shield is halted when the contracting tube becomes supported by the enclosed cable core.
  • the outer overlapping edge of the folded strip presses outwardly into the plastic jacket, making the jacket thinner along the strip edge.
  • Such thinning is undesirable. It has been proposed in the L. Iachimowicz Patent 3,087,007, Apr. 23, 1963, to reduce such thinning by the use of a longitudinal bridging tape over the overlapped edges of the strip.
  • the bridging tape is effective in minimizing or preventing localized thinning of the polyethylene jacket at the overlapping edges of the folded metallic strip, it does not provide a hermetic seal at the overlapped edges. In the event of damage to the jacket by lightning or by mechanical action moisture may penetrate into the cable core between the overlapped edges.
  • a special adhesive polyethylene film may be applied to cover one or both sides of the metallic strip.
  • Such an adhesive polyethylene film is disclosed in the L. Jachimowicz Patent No. 3,233,036, assigned to the owner of the present application.
  • the polyethylene used for this film contains reactive carboxyl groups which have the ability to develop firm adhesion to the metallic strip and also to the overlying polyethylene jacket.
  • Aluminum strip protected by the adhesive polyethylene film is highly resistant to corrosion.
  • use of the adhesive polyethylene film improves telephone cables by inhibiting penetration of moisture into the cable core.
  • This improved resistance to moisture penetration results in part from the sealing of the seam at the overlapping edges of the polyethylene coated shielding strip, thereby forming a tight tube or pipe around the core of the cable.
  • the resistance of this cable structure against the penetration of moisture is further improved by reason of the sealing of the outer polyethylene jacket to the adhesive polyethylene coated shielding tape resulting from the use of sufficiently high extruding temperature and pressure to achieve optimum bonding.
  • An added advantage resulting from use of the shielding strip with the sealed seam is the better mechanical strength of the cable structure and improved life under repeated bending.
  • My new construction utilizes the aluminum or other metal shielding strip precoated with special adhesive polyethylene, preferably on both sides, with the outer polyethylene jacket extruded under such temperature and pressure conditions as to obtain firm adhesion over a portion only of the interface between the extruded jacket and the coated shielding layer.
  • firm adhesion is restricted to the area of the interface over and adjoining the sealed seam of the folded metallic strip, while leaving the balance of the area between the extruded jacket and the precoated folded shielding strip easily strippable.
  • This spatially limited adhesion between the extruded jacket and the shielding layer may be accomplished by a number of the methods which will be described hereinafter.
  • FIGURE 1 is a perspective view of a short length of shielded and jacketed cable made according to the present invention, the jacket being cut back to show the construction better;
  • FIGURE 2 is a transverse cross section, to enlarged scale as compared to FIGURE 1, through a coated metallic strip suitable for use to form the shielding layer in the cable;
  • FIGURE 3 is a transverse cross section through the cable of FIGURE 1, substantially on line 3-3, and to somewhat enlarged scale;
  • FIGURE 4 is a diagrammatic view showing how metallic shielding strip coated with highly adhesive polyethylene may be treated to selectively control the adhesion during manufacture of the cable;
  • FIGURE 5 is a fragmentary transverse section through a cable sheath illustrating another way of selectively controlling the adhesion of the polyethylene jacket to the shielding layer;
  • FIGURE 6 is a diagrammatic view showing one way of making the construction of FIGURE 5.
  • the cable core 11 comprises a plurality of insulated conductors, for example plastic insulated wires arranged in pairs.
  • the shield 12 Enclosing the cable core is the shield 12 comprising a transversely corrugated metallic strip coextensive in length with the cable core and folded about the core into a tube with the longitudinal edges of the strip overlapping each other a short distance, as shown.
  • an extruded jacket 13 of polyethylene Over the tubular shielding layer is an extruded jacket 13 of polyethylene.
  • the metallic strip 12 Prior to being folded about the cable core the metallic strip 12 was precoated, preferably on both sides, with a film of an adhesive polyethylene containing reactive carboxyl groups.
  • This coating material has the ability to develop a firm adhesive bond to the metallic strip and also to the polyethylene jacket 13 extruded over the shielding layer. Details of the coated metallic strip 12 are disclosed in other figures of the drawings. Extrusion of the polyethylene, hot and under pressure, over the folded shielding strip produces a hermetic seal between the overlapping edges of the coated strip and a firm adhesion of the polyethylene jacket to the shield in the area over and adjoining the sealed seam.
  • This area extending between the longitudinal marks A and B shown in FIGURE 1, preferably is limited to less than one-half the periphery or circumference at the interface. In the illustrative embodiment the peripheral extent of the firm adhesion is shown as about one-fourth the periphery.
  • FIGURE 2 is a transverse section to enlarged scale through a coated metallic strip suitable for use in forming the shielding layer.
  • the metallic strip 21 is coated on both surfaces with films of polyethylene material.
  • the thickness of the metallic strip and the coating layers are exaggerated.
  • an aluminum shielding strip might be from 5 to 10 mils thick and the film coating layer might be from 1 to 3 mils thick.
  • This coating material 22 along both edges of the strip, in the limited areas designated 23 and 24, is polyethylene containing a reactive carboxyl group which has the ability to develop firm adhesion to the metallic strip, to itself at the overlapped edges of the strip, and also to the polyethylene jacket when it is extruded thereover.
  • the coating material 25 along the center portion 26 of the strip has a controlled lesser ability to develop firm adhesion to the metallic strip and to the polyethylene jacket which will be extruded over the shielding layer.
  • FIGURE 3 is a cross section taken transversely through the cable of FIGURE 1, the thickness of the metallic shielding strip and the coating layers thereon being exaggerated for purposes of illustration.
  • the film coating along the edges of the metallic strip has the ability to develop firm adhesion between the overlapping edges of the folded strip, and to the polyethylene jacket in the region over the seam and for a limited peripheral distance on both sides thereof. This results in a hermetic seal along the longitudinal seam of the folded shielding strip.
  • the film coating along the center portion of the metallic strip has a controlled lesser ability to develop adhesion to the polyethylene jacket around the peripheral extent 15 of the tubular shield.
  • the precoated metallic strip illustrated in FIGURE 2 may be formed by extruding the polyethylene films onto the strip. During such extrusion polyethylene of limited adhesive characteristic may be extruded over the center part of the strip and highly adhesive polyethylene over the two edge portions of the strip.
  • highly adhesive polyethylene may be extruded over the entire Width of the metallic strip and the center portion of the strip then treated to selectively reduce its adhesive ability.
  • a suitable release agent for example a pigment such as talc, or an oil such as a silicone oil, to limit the area of firm adhesion between the sealed shield and the polyethylene jacket extruded over it.
  • a suitable release agent for example a pigment such as talc, or an oil such as a silicone oil, to limit the area of firm adhesion between the sealed shield and the polyethylene jacket extruded over it. If the cable core with its enclosing longitudinally folded metallic strip coated with polyethylene containing reactive carboxyl groups is fed into the extruder with the seam of the shield in the top position, as shown in FIG- URE 6, talc or other release agent may be dusted or wiped around the lower half or three-quarter of the cable core circumference just before the core enters the extruder for application of the outer polyethylene jacket.
  • This cable construction is illustrated in the fragmentary cross section of FIGURE 5, where 31 is the overlapping film coated metallic strip which encloses the cable core, 13 is the extruded polyethylene jacket, and 32 represents the thin coating of release agent.
  • the release agent shown of exaggerated thickness merely for purposes of illustration, does not extend over the top approximately one-quarter of the tubular shielding layer, thus insuring firm adhesion of the polyethylene jacket 13 to the shielding layer at the longitudinal seam and for a limited peripheral distance on both sides thereof.
  • Silicone oil, silicone oil emulsion in water, or a tale dispersion in an oil may be applied in similar manner as release agent to achieve the same results.
  • the release agent could be applied by dusting, brushing or wiping to the center portion of that surface of the film coated metallic strip which will form the exterior of the tubular shielding layer prior to folding the strip about the cable core.
  • a shielded electrical cable comprising at least one insulated conductor of indefinite length, a metallic strip which is coextensive in length with the conductor and which is folded about the insulated conductor with its edges overlapping each other to provide a tubular metallic shielding layer completely enclosing the insulated conductor, an outer jacket of plastic insulating material surrounding and closely enclosing the tubular shielding layer, the plastic jacket being firmly adhered to the shielding layer along its overlapping edges and for a limited peripheral distance on both sides thereof to seal the overlap, the plastic jacket having a controlled lesser adhesion to the shielding layer around the rest of its periphery to facilitate stripping the plastic from the shielding layer in a region removed from the sealed overlapped region.
  • an electrical cable according to claim 1 in which the outer jacket is polyethylene and the metallic shielding strip is an aluminum strip having bonded to its outer surface a coating of a copolymer of ethylene with monomers containing carboxyl groups, and in which a release agent is interposed between the tubular metallic shielding layer and the polyethylene jacket for a limited peripheral extent opposite the overlapped edges of the shielding strip.
  • an enclosing tubular metallic shielding layer formed from an aluminum strip having bonded to its outer surface a coating of a copolymer of ethylene with monomers containing carboxyl groups, and an outer jacket of polyethylene
  • the method which comprises treating the center portion only of the coated aluminum strip to reduce the adhesion characteristics of the coating material along the center of the strip without affecting the high adhesion characteristics of the coating material along the edge portions of the strip, folding the coated aluminum strip longitudinally around the insulated conductor with its edges overlapping each other to enclose the insulated conductor completely, and extruding the outer jacket of polyethylene over the folded strip with resulting high adhesion of the jacket to the shielding layer along the overlapped portion and lesser adhesion of the jacket to the shielding layer opposite the overlapped portion.
  • an enclosing tubular metallic shielding layer formed from an aluminum strip having bonded to its outer surface a coating of a copolymer of ethylene with monomers containing carboxyl groups, and an outer jacket of polyethylene
  • the method of controlling the adhesion of the jacket to the shielding layer which comprises heating the center portion only of the coated aluminum strip to reduce the adhesion characteristics of the coating material along the center of the strip without affecting the high adhesion characteristics of the coating material along the edge portions of the strip, folding the coated aluminum strip longitudinally around the insulated conductor with its edges overlapping each other to enclose the insulated conductor completely, and extruding the outer jacket of polyethylene over the folded strip with resulting high adhesion of the jacket to the shielding layer along the overlapped portion and lesser adhesion of the jacket to the shielding layer opposite the overlapped portion.
  • an enclosing tubular metallic shielding layer formed from an aluminum strip having bonded to its outer surface a coating of a copolyrner of ethylene with monomers containing carboxyl groups, and an outer jacket of polyethylene
  • the method of controlling the adhesion of the jacket to the shielding layer which comprises folding the coated aluminum strip longitudinally around the insulated conductor with its edges overlapping each other to enclose the insulated conductor completely, applying a release agent to a peripheral portion only of the shielding layer opposite the overlapped edges to reduce the adhesion characteristics of such portion of the coating material without affecting the high adhesion characteristics of the coating material along the overlapped edges, and extruding the outer jacket of polyethylene over the folded strip with resulting high adhesion of the jacket to the shielding layer along the overlapped portion and lesser adhesion of the jacket to the shielding layer opposite the overlapped portion.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)
US427435A 1965-01-22 1965-01-22 Shielded electrical cable Expired - Lifetime US3379821A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US427435A US3379821A (en) 1965-01-22 1965-01-22 Shielded electrical cable
FR37751A FR1453587A (fr) 1965-01-22 1965-11-09 Câble électrique blindé
GB48391/65A GB1133603A (en) 1965-01-22 1965-11-15 Shielded electrical cable
DE1690782A DE1690782C3 (de) 1965-01-22 1966-01-14 Abgeschirmtes elektrisches Kabel und Verfahren zu seiner Herstellung
ES0321953A ES321953A1 (es) 1965-01-22 1966-01-19 Un metodo para producir un cable electrico armado.
CH81366A CH444248A (de) 1965-01-22 1966-01-21 Abgeschirmtes elektrisches Kabel und Verfahren zu seiner Herstellung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427435A US3379821A (en) 1965-01-22 1965-01-22 Shielded electrical cable

Publications (1)

Publication Number Publication Date
US3379821A true US3379821A (en) 1968-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US427435A Expired - Lifetime US3379821A (en) 1965-01-22 1965-01-22 Shielded electrical cable

Country Status (6)

Country Link
US (1) US3379821A (de)
CH (1) CH444248A (de)
DE (1) DE1690782C3 (de)
ES (1) ES321953A1 (de)
FR (1) FR1453587A (de)
GB (1) GB1133603A (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485689A (en) * 1966-12-06 1969-12-23 Gen Cable Corp Method and apparatus for making cable
US3489844A (en) * 1968-03-25 1970-01-13 Dynatronic Cable Eng Corp Multiple-pair digital data transmission cable
US3532783A (en) * 1968-02-28 1970-10-06 Superior Continental Corp Method of molding bonded messenger cable
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
US3607614A (en) * 1969-03-04 1971-09-21 British Non Ferrous Metals Res Adhesives
US3651244A (en) * 1969-10-15 1972-03-21 Gen Cable Corp Power cable with corrugated or smooth longitudinally folded metallic shielding tape
US3654027A (en) * 1969-09-24 1972-04-04 Pre Stress Concrete Apparatus for manufacturing a sheathed cable for use in post-tensioning concrete structures
US3703605A (en) * 1971-03-17 1972-11-21 Matthew R Dembiak Communications cables with sealed metallic moisture barriers
US3823747A (en) * 1971-03-17 1974-07-16 Western Electric Co Tubular member having a sealed longitudinal seam
US3891791A (en) * 1974-05-10 1975-06-24 Gen Cable Corp Communication cable with improved coated shield
US4157452A (en) * 1976-08-30 1979-06-05 Industrie Pirelli Societa Per Azioni Electric power cable with improved screen and method of manufacture thereof
USRE30228E (en) * 1973-02-23 1980-03-11 General Cable Corporation Power cable with corrugated or smooth longitudinally folded metallic shielding tape
US4327248A (en) * 1980-10-06 1982-04-27 Eaton Corporation Shielded electrical cable
US4698457A (en) * 1985-09-25 1987-10-06 Thomas & Betts Corporation Strippable shielded electrical cable assembly
US4758455A (en) * 1985-07-10 1988-07-19 Handy & Harman Automotive Group Inc. Composite fuel and vapor tube having increased heat resistance
US4859534A (en) * 1984-11-19 1989-08-22 Chemical Vulcanising Systems (Proprietary) Limited Method and apparatus for repairing a cable
US5077449A (en) * 1989-11-13 1991-12-31 Northern Telecom Limited Electrical cable with corrugated metal shield
US5486649A (en) * 1994-03-17 1996-01-23 Belden Wire & Cable Company Shielded cable
US5683778A (en) * 1992-12-09 1997-11-04 Crosier; Robert A. Braided graphite-foil and method of production
US20070251715A1 (en) * 2004-08-12 2007-11-01 Dalaine Jean C Method for Protecting a Cable or a Pipe
US9969907B2 (en) 2011-09-30 2018-05-15 Dow Global Technologies Llc Controlled peel laminate adhesive films

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3551586A (en) * 1969-03-24 1970-12-29 Western Electric Co Shielded electrical cable
CN114933761A (zh) * 2022-03-24 2022-08-23 东台市海通金属制品有限公司 一种带屏蔽层和护套的多芯管加工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3233036A (en) * 1963-11-01 1966-02-01 Gen Cable Corp Corrosion proof shielding tape for shielding telephone cables

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3233036A (en) * 1963-11-01 1966-02-01 Gen Cable Corp Corrosion proof shielding tape for shielding telephone cables

Cited By (23)

* 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
US3485689A (en) * 1966-12-06 1969-12-23 Gen Cable Corp Method and apparatus for making cable
US3532783A (en) * 1968-02-28 1970-10-06 Superior Continental Corp Method of molding bonded messenger cable
US3489844A (en) * 1968-03-25 1970-01-13 Dynatronic Cable Eng Corp Multiple-pair digital data transmission cable
US3607614A (en) * 1969-03-04 1971-09-21 British Non Ferrous Metals Res Adhesives
US3654027A (en) * 1969-09-24 1972-04-04 Pre Stress Concrete Apparatus for manufacturing a sheathed cable for use in post-tensioning concrete structures
US3651244A (en) * 1969-10-15 1972-03-21 Gen Cable Corp Power cable with corrugated or smooth longitudinally folded metallic shielding tape
US3703605A (en) * 1971-03-17 1972-11-21 Matthew R Dembiak Communications cables with sealed metallic moisture barriers
US3823747A (en) * 1971-03-17 1974-07-16 Western Electric Co Tubular member having a sealed longitudinal seam
USRE30228E (en) * 1973-02-23 1980-03-11 General Cable Corporation Power cable with corrugated or smooth longitudinally folded metallic shielding tape
US3891791A (en) * 1974-05-10 1975-06-24 Gen Cable Corp Communication cable with improved coated shield
US4157452A (en) * 1976-08-30 1979-06-05 Industrie Pirelli Societa Per Azioni Electric power cable with improved screen and method of manufacture thereof
US4327248A (en) * 1980-10-06 1982-04-27 Eaton Corporation Shielded electrical cable
US4859534A (en) * 1984-11-19 1989-08-22 Chemical Vulcanising Systems (Proprietary) Limited Method and apparatus for repairing a cable
US4758455A (en) * 1985-07-10 1988-07-19 Handy & Harman Automotive Group Inc. Composite fuel and vapor tube having increased heat resistance
US4698457A (en) * 1985-09-25 1987-10-06 Thomas & Betts Corporation Strippable shielded electrical cable assembly
US5077449A (en) * 1989-11-13 1991-12-31 Northern Telecom Limited Electrical cable with corrugated metal shield
US5683778A (en) * 1992-12-09 1997-11-04 Crosier; Robert A. Braided graphite-foil and method of production
US5486649A (en) * 1994-03-17 1996-01-23 Belden Wire & Cable Company Shielded cable
US20070251715A1 (en) * 2004-08-12 2007-11-01 Dalaine Jean C Method for Protecting a Cable or a Pipe
US7838771B2 (en) * 2004-08-12 2010-11-23 Jean-Charles Dalaine Method for protecting a cable or a pipe
US9969907B2 (en) 2011-09-30 2018-05-15 Dow Global Technologies Llc Controlled peel laminate adhesive films

Also Published As

Publication number Publication date
CH444248A (de) 1967-09-30
ES321953A1 (es) 1966-11-01
DE1690782C3 (de) 1975-04-10
GB1133603A (en) 1968-11-13
DE1690782B2 (de) 1974-08-15
FR1453587A (fr) 1966-06-03
DE1690782A1 (de) 1971-06-16

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