US3433890A - Signal transmission cable - Google Patents

Signal transmission cable Download PDF

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Publication number
US3433890A
US3433890A US614450A US3433890DA US3433890A US 3433890 A US3433890 A US 3433890A US 614450 A US614450 A US 614450A US 3433890D A US3433890D A US 3433890DA US 3433890 A US3433890 A US 3433890A
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US
United States
Prior art keywords
pairs
conductors
pair
electric wave
wave communication
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
US614450A
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English (en)
Inventor
Ralph P Gabriel
Rupert I Kinross
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.)
Communications Patents Ltd
Original Assignee
Communications Patents Ltd
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 Communications Patents Ltd filed Critical Communications Patents Ltd
Application granted granted Critical
Publication of US3433890A publication Critical patent/US3433890A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • An object of this invention is to provide an improved cable of the type concerned which whilst being reasonably easy to manufacture enables a high degree of immunity from cross-talk or cross-view to be obtained.
  • the invention provides an electric wave communication cable comprising a group of pairs of twisted together insulated conductors characterised in that at least one of the interstitial spaces present within the circumscribing cylinder of at least one such pair is occupied solely by an electrically non-conducting nonmetallic member with the object of preventing displacement of said one pair with respect to an adjacent pair.
  • the said member that is to say the displacementpreventing member, is preferably in filamentary form and extends alongside the twisted together pair of conductors with which it is associated for the entire length of this pair.
  • this displacement-preventing member can be constituted by a string or thread of polyethelene or other suitable electrically insulating material.
  • a plurality of pairs of twisted together insulated conductors are arranged in a compact symmertical group about a centre core element and both of the interstitial spaces present within the circumscribing cylinder of each such pair is occupied by a displacement-preventing member.
  • the displacement-preventing member Whilst in general it will be found convenient for the displacement-preventing member to have a circular crosssectional shape, it is realised that occasions might arise where the member should have a cross-sectional shape other than circular, for example to ensure that a greater part of its surface coincides with the circumscribing cylinder of the pair with which it is associated.
  • Each of the three pairs 8, 9, and 10 have electrical characteristics which render them suitable for the transmission of audio frequency signals and each of the pairs 2, 3, 4, 5, 6 and 7 are suitable for the transmission of high frequency signals (say up to 15 mc./s.)
  • the circumscribing cylinder of each of the high frequency pairs 2, 3, 4, 5, 6 and 7 has the same diameter as that of the circumscribing cylinder of the group of audio pairs 8, 9 and 10 in order to obtain the desired compact symmetrical arrangement in which the circumscribing cylinder of each of the pairs 2, 3, 4, 5, 6, and 7 is in contact with the circumscribing cylinder of an adjacent pair.
  • the audio pairs 8, 9 and 10 comprise conductors of 0.020" diameter plain copper (6 /2 lb./rnile wire) each sheathed with an 0.0065 radial thickness of polyethelene and the conductors of the high frequency pairs are 20 S.W.G. plain copper each sheathed with a radial thickness of polyethelene such that the twisted pair has a characteristic impedance of approximately ohms.
  • each of the interstices of each of the six high frequency pairs is provided with a displacement-preventing member which is in the form of a string or thread of solid dielectric material such as polyethelene.
  • These strings are indicated in the drawing at 11.
  • these strings 11 have a circular crosssection their diameter being not greater than /a of the diameter of the insulated conductors forming the high frequency pairs so that the strings do not extend beyond the confines of the circumscribing cylinders of these high frequency pairs.
  • the group of six high frequency pairs with their displacement-preventing members is spiralled about the centre core element and the whole symmetrical assembly is wrapped with a layer 12 of suitable insulating material, such for example as one or more strips of Melinex.
  • a layer 12 of suitable insulating material such for example as one or more strips of Melinex.
  • This wrapped assembly is enclosed within a polyethelene sheath
  • the strings 11 function to reduce the possibility of deformation or relative displacement of the high frequency pairs during manufacture of the cable and during subsequent use of the cable with the result that the precise symmetrical arrangement of the high frequency pairs is not only more readily attained during manufacture but is better maintained during subsequent handling of the cable, thus ensuring the attainment and maintenance of a high degree of immunity from cross-talk or crossview.
  • Such a cable may be provided with a conductive screen around the wrapped assembly.
  • a conductive screen may be formed in known manner by a helical or longitudinal tape of conductive material, such for example as an aluminium or copper tape, or by a conductive metallic braid, or by a coating of conductive, non-metallic material, such for example as carbon. This screen is located between a layer of polyethelene which surrounds the wrapped assembly and an outer sheath of polyethelene.
  • the centre core element about which the group of high frequency pairs is arranged may comprise a single pair of twisted together insulated conductors
  • An electric wave communication cable comprising a plurality of pairs of insulated conductors each twisted together at a pitch different from that of the others, the conductors of each pair forming a pair of interstices therebetween;
  • an electrically non-conducting non-metallic member extending with one of said pairs of insulated conductors and positioned in one of the pair of interstices of said conductors for preventing displacement of said one of said pairs of conductors relative to adjacent others thereof.
  • each of a pair of electrically nonconducting non-metallic members extending with one of said pairs of insulated conductors is positioned in -a corresponding one of the pair of interstices of said conductors for preventing displacement of said one of said pairs of conductors relative to adjacent others thereof.
  • each of said non-metallic members comprises a filament of polyethylene extending for the length of said pair of conductors.
  • each of a pair of electrically non-conducting non-metallic members extending with each of three alternate pairs of insulated conductors is positioned in a corresponding one of the pairs of interstices of each of said three alternate pairs of conductors for preventing displacement of each of said three pairs of conductors relative to adjacent others thereof.
  • each of a pair of electrically nonconducting non-metallic members extending with each of the pairs of insulated conductors is positioned in a corresponding one of the pairs of interstices of each of said pairs of conductors for preventing displacement of each of said pairs of conductors relative to adjacent others thereof.
  • each of said non-metallic members comprises a filament of polyethylene extending for the length of each of said pairs of conductors.

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  • Communication Cables (AREA)
US614450A 1966-02-10 1967-02-07 Signal transmission cable Expired - Lifetime US3433890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5858/66A GB1108919A (en) 1966-02-10 1966-02-10 Improved wired broadcasting systems and communications cables therefor

Publications (1)

Publication Number Publication Date
US3433890A true US3433890A (en) 1969-03-18

Family

ID=9803957

Family Applications (1)

Application Number Title Priority Date Filing Date
US614450A Expired - Lifetime US3433890A (en) 1966-02-10 1967-02-07 Signal transmission cable

Country Status (7)

Country Link
US (1) US3433890A (es)
BE (1) BE693831A (es)
DE (1) DE1615867A1 (es)
ES (1) ES336605A1 (es)
FR (1) FR1528651A (es)
GB (1) GB1108919A (es)
NL (1) NL6701803A (es)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676576A (en) * 1969-07-07 1972-07-11 Aerospatiale Multiconductor stranded remote-control cable
US3678177A (en) * 1971-03-29 1972-07-18 British Insulated Callenders Telecommunication cables
US4110554A (en) * 1978-02-08 1978-08-29 Custom Cable Company Buoyant tether cable
US5010210A (en) * 1990-06-21 1991-04-23 Northern Telecom Limited Telecommunications cable
US5061821A (en) * 1988-12-15 1991-10-29 Nachrichtentechnische Vertriebs-Gesellschaft Mbh Loudspeaker cable
US5493071A (en) * 1994-11-10 1996-02-20 Berk-Tek, Inc. Communication cable for use in a plenum
US5814406A (en) * 1995-12-08 1998-09-29 Alcatel Na Cable Systems, Inc. Communication cable for use in a plenum
US5932847A (en) * 1996-05-10 1999-08-03 Remee Products Corporation Flame retardant plenum cable
US5936205A (en) * 1994-11-10 1999-08-10 Alcatel Communication cable for use in a plenum
US6300573B1 (en) * 1999-07-12 2001-10-09 The Furukawa Electric Co., Ltd. Communication cable
WO2002003399A1 (en) * 2000-06-30 2002-01-10 Beltone Electronics Corporation Hearing aid connection system
US6495761B1 (en) * 2000-11-13 2002-12-17 Jed Hacker Electrical cable for current transmission, and method of transmitting current therethrough
US20040245009A1 (en) * 2003-01-31 2004-12-09 Nexans Data transmission cable for connection to mobile devices
US20050121222A1 (en) * 2003-12-03 2005-06-09 Chang-Chi Lee Audio and video signal cable
US20120031643A1 (en) * 2010-08-04 2012-02-09 Tyco Electronics Corporation Cable with twisted pairs of insulated conductors and filler elements
WO2017132327A1 (en) * 2016-01-27 2017-08-03 Hitachi Cable America, Inc. Extended frequency range balanced twisted pair transmission line or communication cable
CN107479155A (zh) * 2017-08-09 2017-12-15 长飞光纤光缆股份有限公司 易分歧气吹层绞式微缆及其制造方法
CN111243787A (zh) * 2020-02-28 2020-06-05 中天科技海缆有限公司 集束海底电缆及其制备方法
US20220199291A1 (en) * 2019-04-26 2022-06-23 Nissei Electric Co., Ltd. Communication cable
US11443872B2 (en) * 2018-10-11 2022-09-13 Aptiv Technologies Limited Automotive communications cable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5527996A (en) * 1994-06-17 1996-06-18 Digital Equipment Corporation Apparatus for increasing SCSI bus length by increasing the signal propogation velocity of only two bus signals
US5740198A (en) * 1994-06-17 1998-04-14 Digital Equipment Corporation Apparatus for increasing SCSI bus length through special transmission of only two bus signals
DE19820505A1 (de) * 1998-05-08 1999-11-11 Hbm Mes Und Systemtechnik Gmbh Meßkabel zur Meßwertübertragung von einer Aufnehmerbrückenschaltung zu einer Meßwertverarbeitungsschaltung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US469522A (en) * 1892-02-23 Electric cable
US796100A (en) * 1903-04-08 1905-08-01 Charles E Wilson Electric cable.
US2109334A (en) * 1934-07-17 1938-02-22 Siemens Ag Communication cable comprising one or more screened core groups
US3023267A (en) * 1959-03-05 1962-02-27 Gen Cable Corp Combination power and communication cable
US3102160A (en) * 1961-12-22 1963-08-27 Whitney Blake Co Telephone cable construction
US3209064A (en) * 1961-10-19 1965-09-28 Communications Patents Ltd Signal transmission electric cables

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US469522A (en) * 1892-02-23 Electric cable
US796100A (en) * 1903-04-08 1905-08-01 Charles E Wilson Electric cable.
US2109334A (en) * 1934-07-17 1938-02-22 Siemens Ag Communication cable comprising one or more screened core groups
US3023267A (en) * 1959-03-05 1962-02-27 Gen Cable Corp Combination power and communication cable
US3209064A (en) * 1961-10-19 1965-09-28 Communications Patents Ltd Signal transmission electric cables
US3102160A (en) * 1961-12-22 1963-08-27 Whitney Blake Co Telephone cable construction

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676576A (en) * 1969-07-07 1972-07-11 Aerospatiale Multiconductor stranded remote-control cable
US3678177A (en) * 1971-03-29 1972-07-18 British Insulated Callenders Telecommunication cables
US4110554A (en) * 1978-02-08 1978-08-29 Custom Cable Company Buoyant tether cable
US5061821A (en) * 1988-12-15 1991-10-29 Nachrichtentechnische Vertriebs-Gesellschaft Mbh Loudspeaker cable
US5010210A (en) * 1990-06-21 1991-04-23 Northern Telecom Limited Telecommunications cable
USRE37010E1 (en) * 1994-11-10 2001-01-09 Alcatel Na Cable Systems, Inc. Communication cable for use in a plenum
US5936205A (en) * 1994-11-10 1999-08-10 Alcatel Communication cable for use in a plenum
US5493071A (en) * 1994-11-10 1996-02-20 Berk-Tek, Inc. Communication cable for use in a plenum
US5814406A (en) * 1995-12-08 1998-09-29 Alcatel Na Cable Systems, Inc. Communication cable for use in a plenum
US5932847A (en) * 1996-05-10 1999-08-03 Remee Products Corporation Flame retardant plenum cable
US6300573B1 (en) * 1999-07-12 2001-10-09 The Furukawa Electric Co., Ltd. Communication cable
US6728384B2 (en) 2000-06-30 2004-04-27 Beltone Electronics Corporation Hearing aid connection system
WO2002003399A1 (en) * 2000-06-30 2002-01-10 Beltone Electronics Corporation Hearing aid connection system
US6495761B1 (en) * 2000-11-13 2002-12-17 Jed Hacker Electrical cable for current transmission, and method of transmitting current therethrough
US20040245009A1 (en) * 2003-01-31 2004-12-09 Nexans Data transmission cable for connection to mobile devices
US6984788B2 (en) * 2003-01-31 2006-01-10 Nexans Data transmission cable for connection to mobile devices
US20050121222A1 (en) * 2003-12-03 2005-06-09 Chang-Chi Lee Audio and video signal cable
US20120031643A1 (en) * 2010-08-04 2012-02-09 Tyco Electronics Corporation Cable with twisted pairs of insulated conductors and filler elements
US8546693B2 (en) * 2010-08-04 2013-10-01 Tyco Electronics Corporation Cable with twisted pairs of insulated conductors and filler elements
WO2017132327A1 (en) * 2016-01-27 2017-08-03 Hitachi Cable America, Inc. Extended frequency range balanced twisted pair transmission line or communication cable
US10170220B2 (en) 2016-01-27 2019-01-01 Hitachi Cable America, Inc. Extended frequency range balanced twisted pair transmission line or communication cable
CN107479155A (zh) * 2017-08-09 2017-12-15 长飞光纤光缆股份有限公司 易分歧气吹层绞式微缆及其制造方法
US11443872B2 (en) * 2018-10-11 2022-09-13 Aptiv Technologies Limited Automotive communications cable
US20220199291A1 (en) * 2019-04-26 2022-06-23 Nissei Electric Co., Ltd. Communication cable
CN111243787A (zh) * 2020-02-28 2020-06-05 中天科技海缆有限公司 集束海底电缆及其制备方法

Also Published As

Publication number Publication date
ES336605A1 (es) 1968-04-01
NL6701803A (es) 1967-08-11
FR1528651A (fr) 1968-06-14
GB1108919A (en) 1968-04-10
BE693831A (es) 1967-07-17
DE1615867A1 (de) 1970-08-20

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