US3881052A - Cable for transmission of PCM signals with plural independent signal paths - Google Patents

Cable for transmission of PCM signals with plural independent signal paths Download PDF

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Publication number
US3881052A
US3881052A US452941A US45294174A US3881052A US 3881052 A US3881052 A US 3881052A US 452941 A US452941 A US 452941A US 45294174 A US45294174 A US 45294174A US 3881052 A US3881052 A US 3881052A
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US
United States
Prior art keywords
cable
bundle
edges
shield
bundles
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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
US452941A
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English (en)
Inventor
Helmut Britz
Georg Maltz
Gert Niemann
Gerd Verdenhalven
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Kabelmetal Electro GmbH
KM Kabelmetal AG
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KM Kabelmetal AG
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Filing date
Publication date
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Publication of US3881052A publication Critical patent/US3881052A/en
Assigned to KABELMETAL ELECTRO GMBH, KABELKAMP 20, 3000 HANNOVER 1, GERMANY reassignment KABELMETAL ELECTRO GMBH, KABELKAMP 20, 3000 HANNOVER 1, GERMANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KABEL- UND METALLWERKE GUTEHOFFNUNGSHUTTE AG
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
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1016—Screens specially adapted for reducing interference from external sources composed of a longitudinal lapped tape-conductor
    • 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

Definitions

  • the cable includes several bundles of conductors, each bundle having e.g. three quads.
  • the quads of each bundle being shielded by a metal strip folded Iongitudinally around the conductors of the bundle with overlapping edges.
  • a tab is formed. welded along the joint line and folded against the strip as enveloping the conductors of the bundle.
  • at least one of the edges of the strip is provided with an adhesive. so that upon folding the strip. the edges overlap and are bonded together.
  • the adhesive used here should be electrically conductive.
  • the present invention relates to the transmission of pulse code modulated signals via a cable, wherein plural transmission line elements, such as pairs or quads are bundled and encased in a common shield.
  • a shield by longitudinally folding an electrically conductive strip about the lines or conductors to be included in a bundle inside of the shield as formed in that manner, whereby the strip is sufficiently wide, so that the edges overlap.
  • Several such shielded bundles are then included in the cable. It was found that a cable made in that manner has a low coupling impedance as to each shield, so that the crosstalk attenuation as between the several bundles is quite high. Each bundle is shielded completely in a separate process before several bundles are combined in a cable. It was found that even for very high frequencies, shielding is adequate and complete. Moreover, the shielding is not subject to deterioration upon ageing.
  • the shield can be longitudinally closed in two ways.
  • a tab is formed upon folding the strip into a tube, seam-welded and folded down.
  • one or both edges are provided with an adhesive and upon folding the strip into a tube, the edges are merely made to overlap, so that the adhesive provides for the bond.
  • the conductor bundles with shield should have adequate mechanical strength. It is, therefore, advisable to reinforce the shield with plastic on the inside and to bond the plastic to the shield.
  • the plastic may also fill some of the inside spaces of the bundle for positioning the conductors therein. This way, even strong bending of the cable will not lead to kinking of the shield.
  • three quads are arranged in a bundle, shielded and given a pie-shaped contour for combining several such bundles in a cable with circular crosssection. The overlapping edges of the shielding strips for the several bundles should all be located near the center of the cable to minimize any bending stress when the cable is being bent.
  • FIG. 1 is a cross-section ofa cable in accordance with the preferred embodiment of the invention.
  • FIGS. 2 and 3 are cross-sections through bundles as they can be included in a cable of FIG. I, but shown on an enlarged scale;
  • FIG. 4 is a schematic illustration of a facility for making such a cable.
  • the cable 1 in FIG. 1 is comprised of four bundles 2, each of which being separately shielded.
  • Each bundle 2 has three stranded quads, having four stranded conductors 5 accordingly.
  • Each bundle 2 has its own shield 4.
  • An individual bundle 2 is made in a manner best understood with reference to FIG. 4.
  • Several storage drums or spools 6 hold quads 3 in stranded configuration. These quads are withdrawn from the drums 6 and pass through individual openings in a plate 7, quiding the quads for passage to a grouping head 8.
  • the head 8 positions the quads into a triangular disposition as shown in FIGS. 2 and 3, with one apex up.
  • a metal tape or strip 4 is reeled from a drum 9 and runs longitudinally into the head 8 for folding and bending around the three quads.
  • Strip 4 may be made of aluminum.
  • the folded strip has its edges overlapping, for example, in form of a radially outwardly extending tab 12.
  • the device 10 provides for welding of the overlapping edges, so that the strip assumes the configuration of a completely closed tube.
  • the tube forming process may, for example, be carried out in the following manner.
  • the metal strip 4 is placed about the quads 3 and folded, so that a radially outwardly extending tab 12 is formed.
  • the tab is established by portions along the ,edges, which abut each other in flat surface to surface contact with an outer exposed joint line.
  • the radially outwardly facing edge faces are then welded along the joint line to obtain a welding seam 11 as shown in FIG. 2.
  • the tab is folded down, flat against the tube as also shown in FIG. 2.
  • Station 10 in FIG. 4 provides for welding as well as folding of the tab.
  • a simpler form of forming the tube can be derived from FIG. 3.
  • the edges are made to overlap directly, upon forming of the tube, reference numeral 121 denoting the overlap joint.
  • An electrically conductive adhesive is applied to a narrow portion of the strip along one or the other or both edges prior to folding, so that the strip edges are bonded together upon being folded in overlapping configuration.
  • the several bundles are not stranded in the cable; rather, they are combined, so that the overlapping portions 12' or folded down tabs 12 are all located in or near the center of the cable as shown in FIG. 1. This way, bending of the cable as a whole will influencethe bondvery little as'thebonds are located'near the center line.
  • q v I In the .pre'ferred'form as illustrated in FIG. 1, three quads are included in one bundle providing for a triangular configuration. Upon combining four such bundles,
  • the shield material is sufficiently flexible to permit such configuratiomso thatthe four outer I sides together establish a circle.
  • the four bundles may be encased in another field, which in turn is enclosed in an outer jacket 13 of a plastic material, which provides, for protection of the cable.
  • pe'r'bundle are no longer arranged to approximate an .equilateral triangle after having assumed pie-shaped configuration as per'FIG. 1; the one side of the shield is even curved.
  • the carrier 15 maybe comprised of polyethyleneeither in solid or in foamed configuration, but with solid outerskin. This particular carrier provides for additional advantageous features of the cable in that line attenuation is lower, while crosstalk attenuation is increased further.
  • a communication cable for the transmission of PCM signals which includes a plurality of bundles of conductors, the bundles being arranged in a jacket, each bundle of the plurality being individually shielded with respect to the other bundles in the cable, the improvement comprising:
  • the shield of a bundle of the plurality being a longitudinally folded metalstrip having its twolongitudinal edges bonded inoverlapping abutment, establishing a longitudinal joint of the shield of the bundle, there being but one such joint for each bundle and shield;
  • edges are bonded together with anadhesive. 4. In a cable as in claim 1, wherein theedges abut in theform of a tab, and have been folded sideways against the strip, so that the edges overlap on the strip I as folded about the conductors.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
US452941A 1973-03-23 1974-03-20 Cable for transmission of PCM signals with plural independent signal paths Expired - Lifetime US3881052A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732314498 DE2314498A1 (de) 1973-03-23 1973-03-23 Fernmeldekabel zur uebertragung von pcm-signalen

Publications (1)

Publication Number Publication Date
US3881052A true US3881052A (en) 1975-04-29

Family

ID=5875657

Family Applications (1)

Application Number Title Priority Date Filing Date
US452941A Expired - Lifetime US3881052A (en) 1973-03-23 1974-03-20 Cable for transmission of PCM signals with plural independent signal paths

Country Status (6)

Country Link
US (1) US3881052A (enrdf_load_stackoverflow)
JP (1) JPS49121985A (enrdf_load_stackoverflow)
CA (1) CA1003918A (enrdf_load_stackoverflow)
DE (1) DE2314498A1 (enrdf_load_stackoverflow)
FR (1) FR2222734B1 (enrdf_load_stackoverflow)
GB (1) GB1434482A (enrdf_load_stackoverflow)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038487A (en) * 1976-04-05 1977-07-26 Bell Telephone Laboratories, Incorporated Shielded multipair cable
US4165442A (en) * 1978-06-12 1979-08-21 General Cable Corporation Telephone cable with improved shield combination
USRE31277E (en) * 1978-06-12 1983-06-14 General Cable Corporation Telephone cable with improved shield combination
US4453031A (en) * 1982-11-15 1984-06-05 Gk Technologies, Inc. Multi-compartment screened telephone cables
US4674822A (en) * 1984-11-21 1987-06-23 Virginia Plastics Company Multi-conductor shielded cable
US5930431A (en) * 1997-12-31 1999-07-27 Siecor Operations, Llc Fiber optic cable
US20030217863A1 (en) * 1999-02-25 2003-11-27 Cable Design Technologies, Inc. Multi-pair data cable with configurable core filling and pair separation
US20040035603A1 (en) * 1999-02-25 2004-02-26 William Clark Multi-pair data cable with configurable core filling and pair separation
US20040149484A1 (en) * 2003-02-05 2004-08-05 William Clark Multi-pair communication cable using different twist lay lengths and pair proximity control
US20040228419A1 (en) * 2003-05-12 2004-11-18 Ba-Zhong Shen Non-systematic and non-linear PC-TCM (Parallel Concatenate Trellis coded modulation)
US20050023028A1 (en) * 2003-06-11 2005-02-03 Clark William T. Cable including non-flammable micro-particles
US20050029007A1 (en) * 2003-07-11 2005-02-10 Nordin Ronald A. Alien crosstalk suppression with enhanced patch cord
US20050056454A1 (en) * 2003-07-28 2005-03-17 Clark William T. Skew adjusted data cable
US7064277B1 (en) 2004-12-16 2006-06-20 General Cable Technology Corporation Reduced alien crosstalk electrical cable
US20060131058A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable with filler element
US20060131057A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable with filler element
US20060131055A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable with filler element
US20060169478A1 (en) * 2005-01-28 2006-08-03 Cable Design Technologies, Inc. Data cable for mechanically dynamic environments
US7145080B1 (en) 2005-11-08 2006-12-05 Hitachi Cable Manchester, Inc. Off-set communications cable
US20070163800A1 (en) * 2005-12-09 2007-07-19 Clark William T Twisted pair cable having improved crosstalk isolation
US20070193769A1 (en) * 1997-04-22 2007-08-23 Clark William T Data cable with cross-twist cabled core profile
US20100200269A1 (en) * 2009-02-11 2010-08-12 General Cable Technologies Corporation Separator for communication cable with shaped ends
US20100218973A1 (en) * 2009-01-30 2010-09-02 Camp Ii David P Separator for communication cable with geometric features
US8729394B2 (en) 1997-04-22 2014-05-20 Belden Inc. Enhanced data cable with cross-twist cabled core profile

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115119U (enrdf_load_stackoverflow) * 1981-01-09 1982-07-16
DE3139026C2 (de) * 1981-10-01 1986-02-20 kabelmetal electro GmbH, 3000 Hannover Verfahren zur Übertragung von Nachrichtensignalen
CN107017060B (zh) * 2017-06-01 2022-07-22 李养民 一种扁平状高速线缆防翻边绞合设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576939A (en) * 1969-10-09 1971-05-04 Kabel Metallwerke Ghh Electrical cables and method of making same
US3622683A (en) * 1968-11-22 1971-11-23 Superior Continental Corp Telephone cable with improved crosstalk properties
US3681515A (en) * 1971-04-29 1972-08-01 Dow Chemical Co Electric cables and like conductors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032604A (en) * 1959-03-30 1962-05-01 Belden Mfg Co Electrical cable
FR1521006A (fr) * 1967-04-26 1968-04-12 Ass Elect Ind Perfectionnements aux procédés de blindage de câbles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622683A (en) * 1968-11-22 1971-11-23 Superior Continental Corp Telephone cable with improved crosstalk properties
US3576939A (en) * 1969-10-09 1971-05-04 Kabel Metallwerke Ghh Electrical cables and method of making same
US3681515A (en) * 1971-04-29 1972-08-01 Dow Chemical Co Electric cables and like conductors

Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038487A (en) * 1976-04-05 1977-07-26 Bell Telephone Laboratories, Incorporated Shielded multipair cable
US4165442A (en) * 1978-06-12 1979-08-21 General Cable Corporation Telephone cable with improved shield combination
USRE31277E (en) * 1978-06-12 1983-06-14 General Cable Corporation Telephone cable with improved shield combination
US4453031A (en) * 1982-11-15 1984-06-05 Gk Technologies, Inc. Multi-compartment screened telephone cables
US4674822A (en) * 1984-11-21 1987-06-23 Virginia Plastics Company Multi-conductor shielded cable
US8729394B2 (en) 1997-04-22 2014-05-20 Belden Inc. Enhanced data cable with cross-twist cabled core profile
US20070193769A1 (en) * 1997-04-22 2007-08-23 Clark William T Data cable with cross-twist cabled core profile
US7405360B2 (en) 1997-04-22 2008-07-29 Belden Technologies, Inc. Data cable with cross-twist cabled core profile
US7534964B2 (en) 1997-04-22 2009-05-19 Belden Technologies, Inc. Data cable with cross-twist cabled core profile
US5930431A (en) * 1997-12-31 1999-07-27 Siecor Operations, Llc Fiber optic cable
US20040035603A1 (en) * 1999-02-25 2004-02-26 William Clark Multi-pair data cable with configurable core filling and pair separation
US6812408B2 (en) * 1999-02-25 2004-11-02 Cable Design Technologies, Inc. Multi-pair data cable with configurable core filling and pair separation
US7179999B2 (en) 1999-02-25 2007-02-20 Belden Technologies, Inc. Multi-pair data cable with configurable core filling and pair separation
US20030217863A1 (en) * 1999-02-25 2003-11-27 Cable Design Technologies, Inc. Multi-pair data cable with configurable core filling and pair separation
US6998537B2 (en) 1999-02-25 2006-02-14 Belden Cdt Networking, Inc. Multi-pair data cable with configurable core filling and pair separation
US20060124344A1 (en) * 1999-02-25 2006-06-15 Belden Cdt Networking, Inc. Multi-pair data cable with configurable core filling and pair separation
US7015397B2 (en) 2003-02-05 2006-03-21 Belden Cdt Networking, Inc. Multi-pair communication cable using different twist lay lengths and pair proximity control
US20060124343A1 (en) * 2003-02-05 2006-06-15 Belden Cdt Networking, Inc. Multi-pair communication cable using different twist lay lengths and pair proximity control
US20040149484A1 (en) * 2003-02-05 2004-08-05 William Clark Multi-pair communication cable using different twist lay lengths and pair proximity control
US20040228419A1 (en) * 2003-05-12 2004-11-18 Ba-Zhong Shen Non-systematic and non-linear PC-TCM (Parallel Concatenate Trellis coded modulation)
US20050023028A1 (en) * 2003-06-11 2005-02-03 Clark William T. Cable including non-flammable micro-particles
US7244893B2 (en) 2003-06-11 2007-07-17 Belden Technologies, Inc. Cable including non-flammable micro-particles
US7109424B2 (en) 2003-07-11 2006-09-19 Panduit Corp. Alien crosstalk suppression with enhanced patch cord
US7728228B2 (en) 2003-07-11 2010-06-01 Panduit Corp. Alien crosstalk suppression with enhanced patchcord
US9601239B2 (en) 2003-07-11 2017-03-21 Panduit Corp. Alien crosstalk suppression with enhanced patch cord
US20070004268A1 (en) * 2003-07-11 2007-01-04 Panduit Corp. Alien crosstalk suppression with enhanced patchcord
US20050029007A1 (en) * 2003-07-11 2005-02-10 Nordin Ronald A. Alien crosstalk suppression with enhanced patch cord
US20060124342A1 (en) * 2003-07-28 2006-06-15 Clark William T Skew adjusted data cable
US7030321B2 (en) 2003-07-28 2006-04-18 Belden Cdt Networking, Inc. Skew adjusted data cable
US7271343B2 (en) 2003-07-28 2007-09-18 Belden Technologies, Inc. Skew adjusted data cable
US20050056454A1 (en) * 2003-07-28 2005-03-17 Clark William T. Skew adjusted data cable
US7317163B2 (en) 2004-12-16 2008-01-08 General Cable Technology Corp. Reduced alien crosstalk electrical cable with filler element
US20060131058A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable with filler element
US7612289B2 (en) 2004-12-16 2009-11-03 General Cable Technology Corporation Reduced alien crosstalk electrical cable with filler element
US7064277B1 (en) 2004-12-16 2006-06-20 General Cable Technology Corporation Reduced alien crosstalk electrical cable
US7157644B2 (en) 2004-12-16 2007-01-02 General Cable Technology Corporation Reduced alien crosstalk electrical cable with filler element
US20060131057A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable with filler element
US7317164B2 (en) 2004-12-16 2008-01-08 General Cable Technology Corp. Reduced alien crosstalk electrical cable with filler element
US7238885B2 (en) 2004-12-16 2007-07-03 Panduit Corp. Reduced alien crosstalk electrical cable with filler element
US20080093106A1 (en) * 2004-12-16 2008-04-24 Roger Lique Reduced alien crosstalk electrical cable with filler element
US20060131055A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable with filler element
US20060131054A1 (en) * 2004-12-16 2006-06-22 Roger Lique Reduced alien crosstalk electrical cable
US20060169478A1 (en) * 2005-01-28 2006-08-03 Cable Design Technologies, Inc. Data cable for mechanically dynamic environments
US7208683B2 (en) 2005-01-28 2007-04-24 Belden Technologies, Inc. Data cable for mechanically dynamic environments
US7145080B1 (en) 2005-11-08 2006-12-05 Hitachi Cable Manchester, Inc. Off-set communications cable
US20090071691A1 (en) * 2005-12-09 2009-03-19 Belden Technologies, Inc. Twisted pair cable having improved crosstalk isolation
US8198536B2 (en) 2005-12-09 2012-06-12 Belden Inc. Twisted pair cable having improved crosstalk isolation
US7449638B2 (en) 2005-12-09 2008-11-11 Belden Technologies, Inc. Twisted pair cable having improved crosstalk isolation
US20070163800A1 (en) * 2005-12-09 2007-07-19 Clark William T Twisted pair cable having improved crosstalk isolation
US20100218973A1 (en) * 2009-01-30 2010-09-02 Camp Ii David P Separator for communication cable with geometric features
US20100200269A1 (en) * 2009-02-11 2010-08-12 General Cable Technologies Corporation Separator for communication cable with shaped ends
US8319104B2 (en) 2009-02-11 2012-11-27 General Cable Technologies Corporation Separator for communication cable with shaped ends
US9018530B2 (en) 2009-02-11 2015-04-28 General Cable Technologies Corporation Separator for communication cable with shaped ends

Also Published As

Publication number Publication date
DE2314498A1 (de) 1974-10-03
JPS49121985A (enrdf_load_stackoverflow) 1974-11-21
GB1434482A (en) 1976-05-05
FR2222734A1 (enrdf_load_stackoverflow) 1974-10-18
FR2222734B1 (enrdf_load_stackoverflow) 1977-09-16
CA1003918A (en) 1977-01-18

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AS Assignment

Owner name: KABELMETAL ELECTRO GMBH, KABELKAMP 20, 3000 HANNOV

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KABEL- UND METALLWERKE GUTEHOFFNUNGSHUTTE AG;REEL/FRAME:004284/0182