CA1174309A - Electric cables with improved shielding members - Google Patents

Electric cables with improved shielding members

Info

Publication number
CA1174309A
CA1174309A CA000370554A CA370554A CA1174309A CA 1174309 A CA1174309 A CA 1174309A CA 000370554 A CA000370554 A CA 000370554A CA 370554 A CA370554 A CA 370554A CA 1174309 A CA1174309 A CA 1174309A
Authority
CA
Canada
Prior art keywords
ribbon
cable
shielding member
electric cable
foil strips
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
Application number
CA000370554A
Other languages
French (fr)
Inventor
John W. Kincaid
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.)
Belden Corp
Original Assignee
Belden 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 Belden Corp filed Critical Belden Corp
Application granted granted Critical
Publication of CA1174309A publication Critical patent/CA1174309A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/02Cables with twisted pairs or quads
    • H01B11/06Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10Screens specially adapted for reducing interference from external sources
    • H01B11/1025Screens specially adapted for reducing interference from external sources composed of a helicoidally wound tape-conductor
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752Laterally noncoextensive components
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2804Next to metal
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813Heat or solvent activated or sealable
    • Y10T428/2817Heat sealable
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2848Three or more layers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Insulated Conductors (AREA)

Abstract

ABSTRACT
Improved shielding members and electric cable constructions which utilize these shielding members are described. Various configurations of the shielding members can be used to enclose a single cable circuit consisting of one or more conductors in two concentric metallic shielding layers fabricated from a single shielding member which provides excellent electrical isolation for the cable circuit. Generally the shielding members comprise an elongated ribbon of insulating material and a pair of elongated foil strips arranged in a parallel relationship with the ribbon.
The foil strips are bonded to opposite sides of the ribbon and each have an elongated edge generally in alignment with opposite elongated edges of the ribbon.
The selective use of layers of heat sensitive sealing material for the shielding layers protects the cable circuits from moisture.

Description

~ 174309 ELECTRIC CABLES WITH IMPROVED SHIELDING MEMBERS

The present invention relates to electric cables and more particularly to improved shielding members and electric cables which utilize such shielding members. For proper transmittal of small signals through an electric cable consisting of one or more individual cable circuits each containing one or more conductors, it is sometimes necessary to prevent the individual cable circuits from picking up extraneous voltages from one another or from neighboring electric circuits. ~f these extraneous voltages are not excluded, they often result in adverse operation of subsequent -amplifying equipment. 5uch foreign o~ undesired voltages picked up by the cable circuits may mask or even destroy the original signals. Therefore, in order to prevent extranèous voltages from being picked up by the cable circuits, it has been common practice to provide metallic shielding wrapped around the individual cables.
One type of metallic shielding commonly used comprises a metallic sleeve composed of copper braid for enveloping a cable, with the copper braid in turn covered with an insulating layer to prevent undesired ground connections to the shlelding. Shielding of this type is relatively expensive to manufacture and relatively bulky and unduly heavy.
Another type of metallic shield commonly used comprises an elongated metallic foil strip having one surface insulated. The shielding can be wrapped about a cable with the insulated surface facing in a direction so as to suitably insulate the metal of the strip and thereby prevent unwanted electrical connections thereto.

,~
'~

~ 1 7'1 30~
The present invention provides an electric cable which includes a cable circuit comprising one or more conductors, a shielding member comprising an elongated ribbon of insulating material, and a pair of elongated metallic foil strips arranged in parallel relation with the ribbon and bonded to opposite sides of the ribbon. The width of each of the foil strips is less than the width of the ribbon and each of the fo.il strips has an outer elongated edge generally in alignment with one of the elongated edges of the ribbon. The shielding member is wrapped circumferentially around the cable circuit in generally parallel relation forming two concentric, su~stantial~y closed shielding layers, each of the layers being formed by a respective one of the foil strips with the foil strips not directly contacting each other. An outer jacket is formed in overlapping relation on the shielding member.
Accordingly, it is an object of the present invention to provide improved shielding members and - la -cr/~

~ 1 7430~

electrical cables which include such shielding members.
Another ob~ect of the invention is to provide improved shielding members and electric cables of the type described wherein a conductor is electrically isolated within two metallic shielding layers formed by wrapping a single shielding member about the conductor.
Other objects of the present invention in addition to those set forth above will become apparent to those skilled in the art from the following description taken in connection with the accompanying drawings wherein:
- FIGURE 1 is a perspective view of an electrical cable formed in accordance with the present invention with a portion of the outer jacket stripped from the inner shielding and insulated oonductors;
FIGURE 2 is a sectional view of one form of shielding member employed in cable structures of the present invention FIGURE 3 is a cross-sectional view of an electric cable containing the shielding member in FIGURE
2;
- FIGURE 4 is a cross-section view of another form of shielding member employed in cable structures of the pre-cent invention;
FIGURE 5 is a cross-sectional view of an electric cable containing the shielding member in FIGURE
4; and FIGURE 6 is a cross-sectional view of another electric cable containing the shieldin~ member in FIGURE
4.
Very generally one embodiment of an electric cable constructed in accordance with the present invention comprises a cable circuit consisting of one or more conductors surrounded by an elongated shielding member. The shielding member comprises an elongated ~ 174309 ribbon of insulating material and a pair of elongated foil strips arranged in a parallel relationship with the ribbon and being bonded to opposite sides of the ribbon, with each of the foil strips having an elongated edge generally in alignment with oppos~te elongated edges of the ribbon. The shielding member is wrapped circumferentially about the cable circuits in a generally parallel relationship forming two concentric, substantially closed shielding layers with each of the layers foLmed by one of the foil strips.
More specifically, in FIGU~E 1 an electric cable 10 is shown which is utilized to transmit electrical signals in applications such as servomecharism systems, audio systems, etc. A portion of an outer insulation jacket 12 has been removed from the electric cable 10 for illustration purposes. The core of the electric cable 10 ccmprises a pair of insulated conductors 14 and 16 each including solid or stranded wires 18 and 20 covered in the conventional manner with insulating sleeves 22 and 24 respectively of a material s~ch as rubber, plastic, etc. The conductors - 14 and 16 represent a single cable circuit, are preferably helically twisted about each othér, and are wrapped in an elongated shielding member 26. The conductors are preferably helically twisted abou~ each other because this configuration affords better interference isolation characteristics and because a pair of conductors twisted about themselves retain their shape. The shielding member 26 is wrapped circumferentially around the conductors 14 and 16 in a helical configuration forming two concentric, ~ubstantially closed shielding tubes within which the conductors are encased.
In accordance with the present invention a cross-sectional view of the shielding member 26 is shown ~n FIGURE 2. The shielding member 26 comprises a ribbon 28 of insulating material fabricated from a suitable material such as polyethylene terephthalate resin, sold under the trademark "Mylar", tetrafluoroethylene polymer, sold under the trademark "Teflon", vinyl polyethylene, etc. A pair of foil strips 30 and 32 which are fabricated from any of the conducting materials such as copper, aluminum or silver are arranged in a parallel relationship with th~ ribbon 28, and are each bonded to an opposite side of the ribbon 28 and each have an outer elongated edge generally in alignment with opposite elongated edges of the ribbon --28. Preferably the foil strips are of a width slightly larger than half of the width of the in~ulating ribbon 28 so that the inner elongated edges 34 and 36 of the foil strips 30 and 32 overlap. This is desirable -because it minimizes the amount of material necessary to surround a cable circuit. The exposed surfaces of the ribbon 28 are coated with a heat sensitive sealing material 38 which preferably bonds the ribbon to itself but not to the outer jacket or the inner core of the -electric cable. - -Referring to FIGURE 3 a cross-sectional view of an electric cable 40 is shown which includes the shielding member 26. It is noted that for illustration purposes the outer insulation ~acket is not shown. The shielding member 26 forms two concentric electrically closed shielding layers preferably helically twisted about a cable circuit comprising a pair of insulated conductors 42 and 44. An outer elongated edge 46 of the shielding member 26 has a shorting fold 48 with an outer elongated edge 50 of the foil strip 30 turned outward.
The shielding member 26 then wraps completely around the pair of conductors 42 and 44 with the foil strip 30 facing inward~ An inner elongated edge 52 of the foil ~1743~9 strip 30 contacts and is held snugly to the outer elongated edge 50 thereby forming a first metallic , ~bield which completely ~urrounds the pair of conductors 42 and 44. From this point the shielding member 26 wraps around the pair ~f conductors 4~ and 44 a second time with one portion 54 of the ribbon 28 touching and bonded to another portion 56 of the ribbon 28 by the sealing material 38. The other outer elongated edge 58 of the shielding member 26 is folded under in a shorting fold 60 so that an outer elongated edge 62 of the foil strip 32 contacts an inner elongated edge 64 of the foil strip 32 thereby forming a second metallic shield which - also co~pletely surrounds the pair of conductors 42 and 44.
Located within the inner shielding layer and along the length of the cable 40 is a drain wire 66 which is fabricated from an uninsulated wire conductor preferably of solid material. The drain wire 66 is used to provide an easier means to terminate the ground of the cable. Further, since the foil strips have a high D.C. resistance having the drain wire 66 in contact with the foil strips along the length of the cable 40 reduces the D.C. resistance of the cable ground.
It is noted that since the foil strips 30 and 32 are preferably spirally wrapped around the conductors 14 and 16 as shown in FIGURE 1, at certain frequencies each of the metallic strips act as an inductance, each turn of the foil strips being equivalent to a turn of a coil. To prevent the spirally wound foil strips from acting as an inductance and allowing leakage of unwanted electrical signals to the conductors 14 and 16 the foil strips terminate against themselves along the length of the shielding member thus shorting each turn of the coil ~ and eliminating the inductive effect.
In keeping with the present invention the use ~7430g of the shielding membe- 26 as pictured in FIGURE 2 has several advantageous attributes which make electric cables fabricated with the shielding member 26 ideal for certain specialty applications such as for use with aircraft circuitry. The inner electrical conductors are securely sealed from external moisture and vapors. Also the inner conductors are shielded by two closed concentric electrically conducting layers which provide excellent shielding. This allows a cable comprised of several cable circuits each wrapped in a separate shielding member to be fabricated which can easily be separated from each other and exhibit excellent cross-talk characteristics. Finally, since the shielding ~ember does not bond to the insulation on the lS conductors a portion of the shielding member can easily be removed foe terminating the ends of the con~uctors.
In accordance with ano~he_ aspect of the present invention, a shielding member 68 is shown in FIGURE 4 made of similar materials as shielding member 26, and comprising an elongated ribbon 70 of insulating material and a pair of elon~ated foil strips 72 and 74 arranged in a parallel relationship with the ribbon 70.
Each of the foil strips 72 and 74 are bonded to an opposite side of the ribbon 70 and each have a width which is approximately equal to the width of the ribbon 70. Extending along the length of the center portion of the exposed surface of the foil strip 72 is a coating of heat sensitive sealing material 76 which is capable of bonding to the metallic foil strips 72 and 74.
Referring to FIGURE 5, a cross-sectional view of an electric cable 78 i5 shown wherein the shielding member 68 forms two connecting electrically closed ~hielding layers preferably helically twisted about a cable circuit consisting of insulated conductors 80 and 82. An outer elongated edge 84 of the shielding member ~ 17~30~

68 has a shorting fold 86 with an outer elongated edge of the foil strip 74 turned outwara. Shielding member 68 then wraps completely around the pair of conductors 80 and 82 with the foil strip 74 facing inward. A
middle portion of the foil strip 74 comes in contact with the shorting fold 86 and thereby forms a first metallic shielding layer which completely surrounds the pair of conductors 80 and 820 From this point the shielding members 68 wraps around the pair of conductor~
80 and 82 a second time with the other outer elongated -edge 88 of the shielding member 68 being folded inward in a shorting fold 90 so that the outer elongated edge of foil strip 74 ~omes in contact with a mid-portion of the foil strip 72. This creates a second metallic shielding layer which complete~y surrounds the first metallic shielding layer and the pair of conductors 80 and 82, with the metallic shielding layers connected to each other. The layer of sealing material 76 bonds a portion of the foil strip 72 to the foil strip 74 thus increasinq the integrity of the seal and retarding moisture from reaching the pair of conductors 80 and 82. A drain wire 92 located within the inner shielding layer along the length of the cable 78 is provided for the reasons stated above.
It is noted that in order for the shielding member 68 to enclose the cable circuit within two connected concentric shielding layers it is not necessary for the shielding member 68 to extend completely around the cable circuit two full times as shown in FIGURE 5. For example in FIGURE 6 a shielding member 94 which is similar in construction to the shielding member 6~ in FIGURE 4 except it is not as wide and does not have a layer of heat sensitive sealing material, is wrapped about insulated conductors 96 and 98. An inner shortinq fold 100 located along one ~ 17430~

elongated edge of the shielding member 94 is located close to an outer shorting fold 102 located along the elongated edge of the shielaing member 94~ In this way the cable ci~cuit is still enclosed within two connected concentric shielding layers, howe~er, the absence of the heat sealing materiai does not prevent moisture from penetrating to the conductors 96 and 98. A drain wire 104 located within the inner shielding layer along the length of the cable is also provided for the reasons stated above.
It is noted that for low frequency applications ~uch as for the transmission of computer signals, it has been found that the configuration as shown in FIGURE 3 provides better isolation of the cahle circuit contained within the shielding member 26. However, for high frequency applications such as circuitry which are used to transmit radio frequency signals, it has been determined that the configuration as shown in FIGURES 5 and 6 provides better isolation of the cablé circuit contained within the shielding member 68 and 94 respectively. At high frequency there are some resonant frequencies which bridge the metallic shielding layers causing leakage of external electrical signals into the cable circuit contained therein. The configuration as shown in FIGURES 5 and 6 wherein the metallic shieldinq layers are connected to one another retards this leakage. It is also noted that another way to retard this phenomena while using the configuration of FIGURE 3 is to use a ribbon of insulating material fabricated from an electrically lossy medium such as "Alathon"
2900, BK-50 semiconducting polyethylene resin manufactured by E.I. DuPont De Nemours & Company, which is a low-density polyethylene resin impregnated with carbon black.
From the foregolng, it should be appreciated ~ 174309 that novel shielding members and electric cables comprised thereof have been described. Various configurations of the shielding member can be used to enclose a single cable circuit in two concentric metallic shielding layers fabricated from a single shielding me~ber which provides excellent electrical isolation for the cable circuits contained therein. The selective use of a layer of heat sensitive sealing material for sealing the shielding layers protects the cable circuits from moisture.-It should be understood that although certainpreferred embodiments of the present invention have been illustrated and described, various modifications, alternatives and equivalence thereof will become 1~ apparent to those skilled in ti-e art and, accordingly, the scope of the present invention should be defined only by the appended claims and equivalence thereof.
Various features of the invention are set forth in the following claims.

Claims (16)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An electric cable comprising: a cable circuit comprising one or more conductors: a shielding member comprising an elongated ribbon of insulating material, and a pair of elongated metallic foil strips arranged in a parallel relationship with the ribbon and bonded to opposite sides of the ribbon, the width of each of the foil strips being less than the width of the ribbon, and each of the foil strips having an outer elongated edge generally in alignment with the opposite elongated edges of the ribbon, the shielding member being wrapped circumferentially around the cable circuit in a generally parallel relationship forming two concentric, substantially closed shielding layers, each of the layers being formed by a respective one of the foil strips with the foil strips not directly contacting each other; and an overlapping outer jacket.
2. The electric cable of Claim 1 wherein the elongated ribbon is composed of an electrically lossy material.
3. The electrical cable of Claim 1 wherein an inner elongated edge of each of the foil strips contacts an outer elongated edge of the respective foil strip along the length of the shielding member.
4. The electric cable of Claim 3 wherein the shielding member further comprises a layer of adhesive on a portion of the exposed surfaces of the ribbon for bonding one side of the exposed surface of the ribbon to the other side of the exposed surface of the ribbon along the length of the ribbon.
5. The electric cable of Claim 4 wherein the layer of adhesive substantially covers the exposed surfaces of the ribbon.
6. The electric cable of Claim 4 wherein the layer of adhesive is composed of a heat sensitive adhesive material.
7. The electric cable of Claim 4 wherein the inner elongated edges of the foil strips extend over a common portion along the length of the ribbon in an offsetting relationship.
8. The electric cable of Claim 4 wherein the adhesive material does not adhere to the outer jacket or to the cable circuit.
9. The electric cable of Claim 1 wherein the shielding member is helically twisted about the cable circuit,
10. The electric circuit of Claim 9 wherein the cable circuit comprises a pair of insulated conductors helically twisted about each other.
11. An electric cable comprising: at least one electrical conductor; an electrically shielding member including an elongated ribbon of insulating material having two opposite sides and two parallel edges, two metallic foil strips, said strips being carried on opposite sides of said ribbon, each of said edges being folded back upon itself with a portion of at least one of said foil strips thereon also being folded back, said shielding member being wrapped circumferentially around said at least one electrical conductor in a generally parallel relationship forming two concentric, substantially electrically closed shielding layers, each of the layers being formed by a respective one of said foil strips with said foil strips contacting each other at said folded back edges thereby electrically shorting said layers to each other, and an overlying outer jacket.
12. The electric cable of Claim 11 further characterized in that the shielding member is helically twisted about said at least one electrical conductor.
13. The electric cable of Claim 12 further characterized in that said at least one electrical conductor consists of a pair of insulated electrical conductors helically twisted about each other.
14. The electric cable of Claim 11 further characterized in that said shielding member has a layer of adhesive for bonding a portion of one of said foil strips to a portion of said other foil strip along the length of said shielding member.
15. The electric cable of Claim 14 further characterized in that said adhesive is heat sensitive.
16. The electric cable of Claim 15 further characterized in that said adhesive does not adhere to said outer jacket or to said at least one electrical conductor.
CA000370554A 1980-02-19 1981-02-10 Electric cables with improved shielding members Expired CA1174309A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US122,296 1980-02-19
US06/122,296 US4327246A (en) 1980-02-19 1980-02-19 Electric cables with improved shielding members

Publications (1)

Publication Number Publication Date
CA1174309A true CA1174309A (en) 1984-09-11

Family

ID=22401862

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000370554A Expired CA1174309A (en) 1980-02-19 1981-02-10 Electric cables with improved shielding members

Country Status (2)

Country Link
US (1) US4327246A (en)
CA (1) CA1174309A (en)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461923A (en) * 1981-03-23 1984-07-24 Virginia Patent Development Corporation Round shielded cable and modular connector therefor
US4406914A (en) * 1981-08-10 1983-09-27 Belden Corporation Slotless multi-shielded cable and tape therefor
US4404424A (en) * 1981-10-15 1983-09-13 Cooper Industries, Inc. Shielded twisted-pair flat electrical cable
US4477693A (en) * 1982-12-09 1984-10-16 Cooper Industries, Inc. Multiply shielded coaxial cable with very low transfer impedance
US4533790A (en) * 1983-02-16 1985-08-06 Akzona Incorporated Electrical conductor assembly
US4533784A (en) * 1983-07-29 1985-08-06 Minnesota Mining And Manufacturing Co. Sheet material for and a cable having an extensible electrical shield
US4510346A (en) * 1983-09-30 1985-04-09 At&T Bell Laboratories Shielded cable
US4641110A (en) * 1984-06-13 1987-02-03 Adams-Russell Company, Inc. Shielded radio frequency transmission cable having propagation constant enhancing means
GB8431784D0 (en) * 1984-12-17 1985-01-30 Connor L O Tape for wrapping electrical conductors
US4691081A (en) * 1986-04-16 1987-09-01 Comm/Scope Company Electrical cable with improved metallic shielding tape
US4973794A (en) * 1987-07-31 1990-11-27 General Electric Company Cable assembly for an electrical signal transmission system
US4835394A (en) * 1987-07-31 1989-05-30 General Electric Company Cable assembly for an electrical signal transmission system
GB8800079D0 (en) * 1988-01-05 1988-02-10 Kt Technologies Inc Shielding tape for telecommunications cable
GB8827681D0 (en) * 1988-11-25 1988-12-29 Gaddis F Bubble/water agitation device
GB8827628D0 (en) * 1988-11-25 1988-12-29 Phillips Cables Ltd Improved electric power cable
JPH031596U (en) * 1989-05-26 1991-01-09
US5008489A (en) * 1989-10-25 1991-04-16 Facile Holdings, Inc. Electrical cables and serpentine pattern shielding tape therefor
US5008490A (en) * 1990-01-19 1991-04-16 Thomas & Betts Corporation Strippable electrically shielded cable
US5037999A (en) * 1990-03-08 1991-08-06 W. L. Gore & Associates Conductively-jacketed coaxial cable
US5144098A (en) * 1990-03-08 1992-09-01 W. L. Gore & Associates, Inc. Conductively-jacketed electrical cable
US5188883A (en) * 1990-03-22 1993-02-23 Northern Telecom Limited Composite tape structures
US5180885A (en) * 1990-04-12 1993-01-19 Dinesh Shah Electrostatic charge dissipating electrical wire assembly and process for using same
US5107076A (en) * 1991-01-08 1992-04-21 W. L. Gore & Associates, Inc. Easy strip composite dielectric coaxial signal cable
US5208426A (en) * 1991-09-03 1993-05-04 W. L. Gore & Associates, Inc. Shielded electric signal cable having a two-layer semiconductor jacket
US5281488A (en) * 1992-09-15 1994-01-25 Poulsen Peder Ulrik Foil strip conductor
US5329064A (en) * 1992-10-02 1994-07-12 Belden Wire & Cable Company Superior shield cable
US5321202A (en) * 1992-10-21 1994-06-14 Hillburn Ralph D Shielded electric cable
US5414213A (en) * 1992-10-21 1995-05-09 Hillburn; Ralph D. Shielded electric cable
US5367123A (en) * 1993-03-15 1994-11-22 The Zippertubing Co. Electrically conductive sheath for ribbon cable
US5391838A (en) * 1993-05-25 1995-02-21 The Zippertubing Co. Flexible double electrical shielding jacket
US5416268A (en) * 1993-07-14 1995-05-16 The Whitaker Corporation Electrical cable with improved shield
US5428187A (en) * 1994-02-24 1995-06-27 Molex Incorporated Shielded hybrid ribbon cable assembly
US6222130B1 (en) * 1996-04-09 2001-04-24 Belden Wire & Cable Company High performance data cable
US6074503A (en) 1997-04-22 2000-06-13 Cable Design Technologies, Inc. Making enhanced data cable with cross-twist cabled core profile
US6091025A (en) 1997-07-29 2000-07-18 Khamsin Technologies, Llc Electrically optimized hybird "last mile" telecommunications cable system
US6684030B1 (en) 1997-07-29 2004-01-27 Khamsin Technologies, Llc Super-ring architecture and method to support high bandwidth digital “last mile” telecommunications systems for unlimited video addressability in hub/star local loop architectures
US6246006B1 (en) 1998-05-01 2001-06-12 Commscope Properties, Llc Shielded cable and method of making same
US6239379B1 (en) 1998-07-29 2001-05-29 Khamsin Technologies Llc Electrically optimized hybrid “last mile” telecommunications cable system
DK1154719T3 (en) * 1999-02-25 2012-07-23 Medtronic Minimed Inc Sample connector and cable for a glucose monitor
US6649828B2 (en) * 2000-05-02 2003-11-18 Custom Coated Components, Inc Self-sealing reflective sleeve
EP1287535A2 (en) * 2000-05-19 2003-03-05 Spirent Communications Multiple shielded cable
US6384337B1 (en) 2000-06-23 2002-05-07 Commscope Properties, Llc Shielded coaxial cable and method of making same
DE10042732A1 (en) * 2000-08-31 2002-03-28 Tesa Ag Process for sheathing elongated goods, such as in particular cable sets with an adhesive tape
US6433273B1 (en) * 2000-10-20 2002-08-13 The Zippertubing Co. Heat-shielding jacket
US20020187350A1 (en) * 2001-01-29 2002-12-12 Honeywell International Inc. Robust highly reflective optical construction
US6906257B2 (en) * 2001-01-29 2005-06-14 Honeywell International Inc. Metallic coated dielectric substrates
JP4914539B2 (en) * 2001-05-18 2012-04-11 矢崎総業株式会社 Assembly method of shield harness
US6744051B2 (en) * 2001-11-16 2004-06-01 Ge Medical Systems Global Technology Company Llc High density electrical interconnect system for photon emission tomography scanner
US20050109522A1 (en) * 2003-11-25 2005-05-26 Midcon Cables Co., L.L.C., Joplin, Mo Conductive TEFLON film tape for EMI/RFI shielding and method of manufacture
CN2705975Y (en) * 2004-05-24 2005-06-22 天瀚科技股份有限公司 Electronic device having at least two shaft turning function
US7790981B2 (en) * 2004-09-10 2010-09-07 Amphenol Corporation Shielded parallel cable
DE102005017381A1 (en) 2005-04-14 2006-10-19 Tesa Ag A method for wrapping elongated material, in particular cable harnesses, with a sheath
FR2893177B1 (en) * 2005-11-10 2008-09-05 Nexans Sa ELECTRIC CABLE WITH IMPROVED SCREEN
US20070272430A1 (en) * 2006-05-26 2007-11-29 Tuffile Charles D Asymmetric communication cable shielding
US9251930B1 (en) 2006-08-11 2016-02-02 Essex Group, Inc. Segmented shields for use in communication cables
US9363935B1 (en) 2006-08-11 2016-06-07 Superior Essex Communications Lp Subdivided separation fillers for use in cables
US9275776B1 (en) 2006-08-11 2016-03-01 Essex Group, Inc. Shielding elements for use in communication cables
US7969747B1 (en) * 2006-09-29 2011-06-28 Emc Corporation Line cord filter
DE202007012475U1 (en) * 2007-09-06 2009-01-08 Coroplast Fritz Müller Gmbh & Co. Kg Adhesive tape for longitudinal wrapping of elongated material
WO2009067551A2 (en) * 2007-11-19 2009-05-28 Belden Technologies, Inc. Separator spline and cables using same
US8093869B1 (en) * 2007-12-03 2012-01-10 Chava Energy LLC Apparatus for generating electricity utilizing nondestructive interference of energy
US7827678B2 (en) * 2008-06-12 2010-11-09 General Cable Technologies Corp. Longitudinal shield tape wrap applicator with edge folder to enclose drain wire
JP2011014391A (en) 2009-07-02 2011-01-20 Yazaki Corp Metallic foil-wrapped shielded electric wire
JP5570227B2 (en) * 2010-01-06 2014-08-13 キヤノン株式会社 Shielded cable
JP2011187323A (en) * 2010-03-09 2011-09-22 Hitachi Cable Fine Tech Ltd Ultrafine shielded cable, and harness using the same
JP2011222262A (en) * 2010-04-08 2011-11-04 Sumitomo Electric Ind Ltd Shield cable
JP6038941B2 (en) * 2011-10-31 2016-12-07 スリーエム イノベイティブ プロパティズ カンパニー Edge insulation structure for electrical cables
JP5825219B2 (en) * 2012-07-31 2015-12-02 日立金属株式会社 Differential signal transmission cable, multi-core differential signal transmission cable, and differential signal transmission cable manufacturing method and manufacturing apparatus
WO2014034665A1 (en) * 2012-08-27 2014-03-06 古河As株式会社 Electromagnetic shielding tube
US9424964B1 (en) 2013-05-08 2016-08-23 Superior Essex International LP Shields containing microcuts for use in communications cables
JP2015041519A (en) * 2013-08-22 2015-03-02 日立金属株式会社 Cable for differential signal transmission
US9627937B2 (en) 2013-12-02 2017-04-18 GM Global Technology Operations LLC Stator for an electric motor
JP6275545B2 (en) * 2014-05-21 2018-02-07 矢崎総業株式会社 Wire harness
DE102014111494A1 (en) 2014-08-12 2016-02-18 Certoplast Vorwerk & Sohn Gmbh Method for producing a casing for elongated material
DE102014113769A1 (en) 2014-09-23 2016-03-24 Certoplast Vorwerk & Sohn Gmbh Method for producing a casing for elongated material
US10102946B1 (en) 2015-10-09 2018-10-16 Superior Essex International LP Methods for manufacturing discontinuous shield structures for use in communication cables
US10714874B1 (en) 2015-10-09 2020-07-14 Superior Essex International LP Methods for manufacturing shield structures for use in communication cables
DE102016207322A1 (en) * 2016-04-28 2017-11-02 Leoni Kabel Gmbh Data cable and method for producing such
JP6673071B2 (en) * 2016-07-19 2020-03-25 株式会社オートネットワーク技術研究所 Shield member, electric wire with shield member, intermediate product of shield member, and method of manufacturing shield member
CN208014407U (en) * 2018-01-16 2018-10-26 立讯精密工业股份有限公司 Signal-transmitting cable
DE202020101775U1 (en) 2020-04-01 2020-05-26 Certoplast Technische Klebebänder Gmbh Adhesive tape, in particular cable winding tape for wrapping cables in automobiles
EP4015208B1 (en) * 2020-12-21 2023-08-30 Nexans Laminate water barrier
CN114464348A (en) * 2021-08-12 2022-05-10 上海蔚兰动力科技有限公司 Corona-resistant enameled round wire and preparation method thereof
DE102021125009A1 (en) 2021-09-28 2023-03-30 Coroplast Fritz Müller GmbH & Co. K. G. Longitudinally sheathed, electromagnetically shielded, elongate goods and sheathing for sheathing the goods and use of the same
WO2023051890A1 (en) 2021-09-28 2023-04-06 Coroplast Fritz Müller Gmbh & Co. Kg Longitudinally coated, electromagnetically shielded elongated product, sleeve for coating the product, and use thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017696A (en) * 1950-05-12 1952-12-17 Forges Ateliers Const Electr Sheaths for conductors and cables
US2919390A (en) * 1953-07-31 1959-12-29 Hunt Capacitors Ltd A Electrical capacitors
US3032604A (en) * 1959-03-30 1962-05-01 Belden Mfg Co Electrical cable
US3274329A (en) * 1964-05-06 1966-09-20 Belden Mfg Co Shielded cords
US3474186A (en) * 1967-04-13 1969-10-21 Moore & Co Samuel Electrostatically shielded wire bundle

Also Published As

Publication number Publication date
US4327246A (en) 1982-04-27

Similar Documents

Publication Publication Date Title
CA1174309A (en) Electric cables with improved shielding members
CA1166711A (en) Electric cables with a single insulating shielding member
JP2863631B2 (en) Coaxial cable with conductive jacket
US5003126A (en) Shielded flat cable
US3439111A (en) Shielded cable for high frequency use
US5142100A (en) Transmission line with fluid-permeable jacket
CA1160300A (en) Triboelectric transducer cable
US4477693A (en) Multiply shielded coaxial cable with very low transfer impedance
US5132491A (en) Shielded jacketed coaxial cable
US3622683A (en) Telephone cable with improved crosstalk properties
US5329064A (en) Superior shield cable
US4510346A (en) Shielded cable
US4376920A (en) Shielded radio frequency transmission cable
US5144098A (en) Conductively-jacketed electrical cable
US4912283A (en) Shielding tape for telecommunications cables and a cable including same
US3794750A (en) Shielded cable
JPS60101808A (en) Signal cable
JPH05120930A (en) Products of electric wire and cable, whose shielding effect is enhanced
US3474186A (en) Electrostatically shielded wire bundle
US4458103A (en) Insulating joint for rubber or plastic insulated power cable
US5321202A (en) Shielded electric cable
CA2179841C (en) Coaxial cable
TWM617216U (en) Cable
US4855536A (en) Power cable having sectionalized screen and method of making same
JPH11149832A (en) Electric signal cable assembly

Legal Events

Date Code Title Description
MKEX Expiry