US3868771A - Jointing metal cable sheaths - Google Patents

Jointing metal cable sheaths Download PDF

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Publication number
US3868771A
US3868771A US357679A US35767973A US3868771A US 3868771 A US3868771 A US 3868771A US 357679 A US357679 A US 357679A US 35767973 A US35767973 A US 35767973A US 3868771 A US3868771 A US 3868771A
Authority
US
United States
Prior art keywords
sheath
length
metal
tubular member
metallic tubular
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
US357679A
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English (en)
Inventor
Graham John Smee
Anthony Owen Miller
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Application granted granted Critical
Publication of US3868771A publication Critical patent/US3868771A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/60—Connections between or with tubular conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
    • H02G15/32—Cable inlets
    • 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.
    • Y10T29/49195—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/49—Member deformed in situ

Definitions

  • a method of effecting a fluid-tight joint between an end of a metal cable sheath and another metal body having a throughbore comprises so shaping a length of the metal sheath adjacent to the end to be jointed that the length is radially spaced from the cable core or cores; either (a) introducing between said length of the metal sheath and the core or cores a length of the metal body or (b) both introducing between said length of the metal sheath and the core or cores a tubular metal mandrel and also arranging a length of the metal body to overlie said length of the metal sheath; and (in either case) permanently circumferentially compressing the assembly of metal bodies radially inwardly to effect a substantially fluid-tight joint between the metal sheath and the metal body.
  • This invention relates to methods of jointing the sheaths of single or multi-core metal sheathed electric cables and is especially, but not exclusively, concerned with jointing corrugated cable sheaths of aluminium or aluminium alloy.
  • the method comprises so shaping a length of the metal sheath adjacent to the end to be jointed that the length is radially spaced from the cable core or cores; introducing between said length of the metal sheath and the core or cores a length of the metal body or introducing between said length of the metal sheath and the core or cores a tubular metal mandrel and arranging a length of the metal body to overlie said length of the metal sheath and permanently circumferentially compressing the assembly of metal bodies radially inwardly to effect a substantially fluid-tight joinnt between the metal sheath and the metal body.
  • a metal sleeve is arranged to overlie the said length of metal sheath before permanent circumferential compression of the assembly of metal bodies is effected.
  • an elastomeric sealing ring is housed between the cable sheath and the contiguous surface of the other metal body.
  • the metal body may be formed with an annular groove to receive the sealing ring but this is not necessary in all cases; where the sheath is located between the metal body and a metal sleeve, the sleeve may be grooved instead of the metal body itself, the ring being positioned on the opposite side of the sheath to the groove.
  • At least a part of the said surface of the metal body is serrated, knurled or otherwise roughened so that the protuberances of the roughened surface bite into the contiguous surface of the length of metal sheath when the assembly of metal bodies is permanently circumferentially compressed.
  • an end wall of the enclosure has a sleeve integral with and extending longitudinally from one of its end faces and this sleeve will constitute the length of metal body to which the metal sheath is to be jointed.
  • this integral sleeve extends outwardly from the end wall of the joint or termination enclosure but it may, if desired, extend inwardly of the enclosure.
  • the integral sleeve will be arranged to overlie a part of the metal sheath spaced from the end of the sheath and the length of metal sheath extending beyond the end of the integral sleeve may be folded back to overlie the external surface of the integral sleeve so that, in effect, the integral sleeve lies between a length of metal sheath and the core or cores.
  • Permanent circumferential compression of the assembly of metal bodies may be effected in any suitable manner and may be effected over substantially the whole length of the assembly or at one or more locations along its length.
  • the length of sheath that is to be jointed to the metal body is preferably stretched or otherwise treated to remove, or substantially reduce the size of, the corrugations in said sheath length. Removal or substantial reduction in the size of the corrugations in the length of metal sheath may be effected using the method and apparatus described and claimed in the Complete Specification of our British Pat. Appl. No. 8299/ (now published under the Ser. No. 1,299,964).
  • the present invention also includes a fluid-tight joint between an end of a metal cable sheath and another metal body having a throughbore made by the method of the present invention.
  • FIG. 1 is a fragmentary side elevational view, partly in section of one embodiment of fluid tight joint between an end of corrugated aluminum cable sheath and a metal joint enclosure;
  • FIG. 2 is a fragmentary side elevational view, partly in section, of a second embodiment of fluid tight joint according to this invention
  • FIG. 3 is a fragmentary side elevational view, partly in section, of a third embodiment of fluid tightjoint according to this invention.
  • FIG. 4 is a fragmentary side elevational view, partly in section, of a fourth embodiment in fluid tight joint according to this invention.
  • FIG. 5' is a fragmentary side elevational view, partly in section, of a fifth embodiment of fluid tight joint according to this invention.
  • FIG. 6 is a fragmentary side elevational view, partly insection, of a sixth embodiment of fluid tight joint according to this invention.
  • end wall 1 of a joint enclosure has an integral outwardly extending sleeve 2 which is introduced between a stretched length 3 of aluminium sheath and the core or cores.
  • the sleeve 2 has two circumferential grooves 4 in which are housed O-rings 5 and is knurled or serrated at 6.
  • An aluminium sleeve 7 overlies the sheath length 3 and is permanently circumferentially compressed to effect a fluid-tight joint between the sheath and end wall of the joint enclosure.
  • 3 poultice is temporarily applied to limit escape of insulating fluid from the core or cores during the jointing process.
  • a mandrel 18 is introduced between a streteched length 13 of aluminium sheets and the core or cores and a sleeve 12 integral with and extending outwardly from an end wall 11 of the joint enclosure is arranged to overlie the sheath length 13, the sleeve being knurled or serrated at 16.
  • the mandrel 18 has two circumferential grooves 19 and O-rings are positioned between the sheath length 13 and the sleeve 12 to overlie these grooves.
  • FIG. 3 illustrates a fluid-tight joint in which a sleeve 22 integral with and extending inwardly from an end wall 21 of the joint enclosure is arranged to overlie a part of the stretched sheath 30 remote from the end of the sheath and a length 33 of the sheath extending beyond the end of the sleeve is folded back to overlie the external surface of the sleeve in which are grooves 24 housing O-rings 25 and which is knurled at 26.
  • An aluminium sleeve 27 overlies the sheath length 23 and is permanently circumferentially compressed to effect a fluid-tight joint between the sheath and end wall of the joint enclosure.
  • a sleeve 32 integral with and extending outwardly from an end wall of the joint enclosure is introduced between the stretched length 33 of the aluminium sheath and the core or cores, the sleeve having grooves 34 housing 0- rings 35.
  • Circumferential clamps 39 are arranged around the sheath length 33 to overlie three of the 0- rings and these clamps are tightened to form permanent circumferential depressions in the sheath length which compress the O-rings into the grooves and effect a fluid-tight seal.
  • the fluid-tight joint shown in FIG. 5 differs from that shown in FIG. 4 in that the three grooves 44 in the sleeve 42 nearer the end wall 41 are flat-bottomed and house flat rubber seals 48.
  • the parts of the sheath length 43 overlying the flat seals 48 are permanently locally circumferentially compressed to effect a fluidtight joint between the sheath and end wall of the joint enclosure.
  • a sleeve 52 integral with and extending outwardly from an end wall 51 of the joint enclosure is introduced between a stretched length 53 of aluminum sheath and the core or cores, the sleeve having three flat-bottomed circumferential grooves 54 in its radially outer surface.
  • An aluminum sleeve 57 is arranged to overlie the stretched sheath length 53 and the assembly of metal bodies is permanently locally circumferentially compressed in the regions of the grooves 54 to effect a fluid-tight joint between the sheath and end wall of the joint enclosure.
  • the method of the invention has a further important advantage that less skill is required by the operative in affecting the joint.
  • a method of sealing an end of an electric cable having at least one core and a surrounding metallic sheath to an end portion of an enclosure into which said end extends comprising:
  • a method as claimed in claim 1 in which said first metallic tubular member projects from said end portion into the interior of said enclosure and wherein said first metallic tubular member overlies a part of said metal sheath spaced from the end of the sheath further than said length thereof and wherein said length thereof is constituted by an end part of the sheath initially extending beyond the first metallic tubular member which is folded back to overlie said first metallic tubular member in contact with an external surface thereof.

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  • Cable Accessories (AREA)
US357679A 1972-05-08 1973-05-04 Jointing metal cable sheaths Expired - Lifetime US3868771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2140772A GB1422947A (en) 1972-05-08 1972-05-08 Jointing metal cable sheaths

Publications (1)

Publication Number Publication Date
US3868771A true US3868771A (en) 1975-03-04

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ID=10162424

Family Applications (1)

Application Number Title Priority Date Filing Date
US357679A Expired - Lifetime US3868771A (en) 1972-05-08 1973-05-04 Jointing metal cable sheaths

Country Status (6)

Country Link
US (1) US3868771A (enrdf_load_stackoverflow)
JP (1) JPS4954885A (enrdf_load_stackoverflow)
DE (1) DE2322800B2 (enrdf_load_stackoverflow)
FR (1) FR2183968B1 (enrdf_load_stackoverflow)
GB (1) GB1422947A (enrdf_load_stackoverflow)
NL (1) NL7306408A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016091549A1 (de) * 2014-12-11 2016-06-16 Siemens Ag Elektroenergieübertragungseinrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626510C3 (de) * 1976-06-12 1982-03-04 Walter Rose Gmbh & Co Kg, 5800 Hagen Kabelmuffe mit einem metallischen Stützmantel und beidseitig an diesen anschließenden Muffenköpfen sowie einer diese Teile miteinander verbindenden Umhüllung
JPS58149029U (ja) * 1982-03-29 1983-10-06 三菱電線工業株式会社 遮水層付ケ−ブルの接続部
GB8308011D0 (en) * 1983-03-23 1983-04-27 British Telecomm Jointing armoured submarine cables
JPS60103226U (ja) * 1983-12-20 1985-07-13 日立電線株式会社 ケ−ブル接続部の構造

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682635A (en) * 1927-03-25 1928-08-28 Charles E Smith Pipe coupling
US1921642A (en) * 1931-07-08 1933-08-08 Frederick Snare Corp Pipe joint and method of forming same
US2173643A (en) * 1935-01-24 1939-09-19 Telefunken Gmbh Radio frequency cable terminal
US3068315A (en) * 1960-01-25 1962-12-11 Gen Cable Corp Joint for aluminum sheathed cables
US3245027A (en) * 1963-09-11 1966-04-05 Amp Inc Coaxial connector
US3304104A (en) * 1964-05-04 1967-02-14 Vibraseal Corp Tube coupling
US3744130A (en) * 1970-04-24 1973-07-10 British Insulated Callenders Methods of jointing metal pipes and other metal tubular bodies
US3769444A (en) * 1973-01-19 1973-10-30 Aeronics Corp Of America Connector means for cables with semi-rigid sheaths
US3778535A (en) * 1972-05-12 1973-12-11 Amp Inc Coaxial connector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1083741A (en) * 1964-01-30 1967-09-20 Btr Industries Ltd An improved hose end unit
US3528689A (en) * 1967-12-22 1970-09-15 Homer D Roe Tube joint

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682635A (en) * 1927-03-25 1928-08-28 Charles E Smith Pipe coupling
US1921642A (en) * 1931-07-08 1933-08-08 Frederick Snare Corp Pipe joint and method of forming same
US2173643A (en) * 1935-01-24 1939-09-19 Telefunken Gmbh Radio frequency cable terminal
US3068315A (en) * 1960-01-25 1962-12-11 Gen Cable Corp Joint for aluminum sheathed cables
US3245027A (en) * 1963-09-11 1966-04-05 Amp Inc Coaxial connector
US3304104A (en) * 1964-05-04 1967-02-14 Vibraseal Corp Tube coupling
US3744130A (en) * 1970-04-24 1973-07-10 British Insulated Callenders Methods of jointing metal pipes and other metal tubular bodies
US3778535A (en) * 1972-05-12 1973-12-11 Amp Inc Coaxial connector
US3769444A (en) * 1973-01-19 1973-10-30 Aeronics Corp Of America Connector means for cables with semi-rigid sheaths

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016091549A1 (de) * 2014-12-11 2016-06-16 Siemens Ag Elektroenergieübertragungseinrichtung

Also Published As

Publication number Publication date
NL7306408A (enrdf_load_stackoverflow) 1973-11-12
JPS4954885A (enrdf_load_stackoverflow) 1974-05-28
GB1422947A (en) 1976-01-28
DE2322800A1 (de) 1973-11-22
DE2322800B2 (de) 1976-02-12
FR2183968A1 (enrdf_load_stackoverflow) 1973-12-21
FR2183968B1 (enrdf_load_stackoverflow) 1977-12-30

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