CA1076227A - Apparatus for splicing a single conductor of a multiconductor cable - Google Patents
Apparatus for splicing a single conductor of a multiconductor cableInfo
- Publication number
- CA1076227A CA1076227A CA248,116A CA248116A CA1076227A CA 1076227 A CA1076227 A CA 1076227A CA 248116 A CA248116 A CA 248116A CA 1076227 A CA1076227 A CA 1076227A
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- Prior art keywords
- conductor
- end portions
- cable
- body portion
- end portion
- Prior art date
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Abstract
TITLE
APPARATUS FOR SPLICING A SINGLE CONDUCTOR
OF A MULTICONDUCTOR CABLE
ABSTRACT OF THE DISCLOSURE
The parted end portions of a metallic conductor comprising one of a plurality of conductors within a multi-conductor cable are coupled together by inserting one end portion having the insulation removed therefrom into an end portion of a metallic sleeve member. The sleeve member heaving a tubular body portion and flared end portions is fabricated from an electrically conductive deformable material. A
recessed portion is spaced from one of the sleeve end portions on the body portion. A conductor end portion extends into the sleeve member end portion and is positioned in abutting relation with the recessed portion. The flared sleeve end portion overlaps the insulation on the conductor end portion. The other conductor end portion is extended into the opposite sleeve member end portion with the flared portion positioned in abutting, overlapping relation with the conductor insulation. The sleeve member end portions are then crimped into compressing contact with the conductor end portions thereby securing the end portions in spaced relation within the sleeve body portion. The metallic sleeve member has an electrical conductance equal to the electrical conductance of the spliced conductor to permit unimpeded current flow between the end portions of the conductor. The sleeve member is wrapped with insulating tape and then gathered with the undamaged conductors for wrapping the entire cable with insulation tape at the splice to expediently return the multiconductor cable to service.
APPARATUS FOR SPLICING A SINGLE CONDUCTOR
OF A MULTICONDUCTOR CABLE
ABSTRACT OF THE DISCLOSURE
The parted end portions of a metallic conductor comprising one of a plurality of conductors within a multi-conductor cable are coupled together by inserting one end portion having the insulation removed therefrom into an end portion of a metallic sleeve member. The sleeve member heaving a tubular body portion and flared end portions is fabricated from an electrically conductive deformable material. A
recessed portion is spaced from one of the sleeve end portions on the body portion. A conductor end portion extends into the sleeve member end portion and is positioned in abutting relation with the recessed portion. The flared sleeve end portion overlaps the insulation on the conductor end portion. The other conductor end portion is extended into the opposite sleeve member end portion with the flared portion positioned in abutting, overlapping relation with the conductor insulation. The sleeve member end portions are then crimped into compressing contact with the conductor end portions thereby securing the end portions in spaced relation within the sleeve body portion. The metallic sleeve member has an electrical conductance equal to the electrical conductance of the spliced conductor to permit unimpeded current flow between the end portions of the conductor. The sleeve member is wrapped with insulating tape and then gathered with the undamaged conductors for wrapping the entire cable with insulation tape at the splice to expediently return the multiconductor cable to service.
Description
~1~7~ 7 BAC~GROUND OF THE INV~NTION
1 Field of ~he Invention ; Thls invention rela~es to a m~chanical splice for a multiconductor cable and ~ore particularly to a mechanioal splice ~or coupling the parted end portion~ of a single d~maged conductor o the cable in which the other condu~tors remain fully operable.
1 Field of ~he Invention ; Thls invention rela~es to a m~chanical splice for a multiconductor cable and ~ore particularly to a mechanioal splice ~or coupling the parted end portion~ of a single d~maged conductor o the cable in which the other condu~tors remain fully operable.
2 De~cri tion of the Prlor Art P
Electrical power i~ cornmonly supplied to hea~ry-duty electxical equipment ~rom an electric:al source by an insulated conductor cable. The cable connect~ the electrlcal equipment to the source and may house a plurality s) individually insulated conductors that comprlse the cable. In underground minirlg, the conductor cable supplie~ electrical power to the electrlcal mining equipment and i~ required to extend long distances in the mine bet~een the pa.7er source and the location of operation. Consequen~ly, ~he c~able must be 1exible and resist ~he e~ects of ~oisture and abrasion to which it ~s subjec-.
ted.
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Electrical power i~ cornmonly supplied to hea~ry-duty electxical equipment ~rom an electric:al source by an insulated conductor cable. The cable connect~ the electrlcal equipment to the source and may house a plurality s) individually insulated conductors that comprlse the cable. In underground minirlg, the conductor cable supplie~ electrical power to the electrlcal mining equipment and i~ required to extend long distances in the mine bet~een the pa.7er source and the location of operation. Consequen~ly, ~he c~able must be 1exible and resist ~he e~ects of ~oisture and abrasion to which it ~s subjec-.
ted.
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.
:
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: ,
3 -~ .
~ ~ ' ~7~2~t7 A problem is encountered in repairing a cable that has failed due to the adverse conditions that prevail in the mine. Generally, the cable failure is attributed to a break in one of the conductors with a section of the conductor being burned out. Rather than replace the entire multiconduc-tor cable it has been the practice to sever the cable at the point of failure and repalr the cable by splicing each conductor individually, not only the damaged conduc-tor but the undamaged conductors as well. Not only is this procedure for restoring the multiconductor cable to operation extremely time consuming in that each individual conductor muste be spliced, it also substantially weakens the cable.
The conventional multiconduc~or cable splice tends to reduce cable flexibility. By splicing each conductor the diameter of the cable at the point o~ the splice is substantially increased, thereby reducing the cable flexibility. Furthermore, a multiconductor cable spliced ;-; in this manner is more susceptible to the adverse conditions that prevail, incroasing the probability of further failure.
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~76227 There is need for a mechanical splice for coupling a single conductor comprising one of a plurality of conductors of a multiconductor cable where the single conductor is the only damaged conductor and the multicon-ductor cable can be expediently restored to operation without cutting the entire cable and splicing each of the conductors separately.
SUMMARY OF THE IMVENTION
In accordance with the present invention, there is provided apparatus for splicing parted end portions of a multiconductor cable that includes a conductive connec-tor for coupling the conductor end portions that are formed by removing the damaged portio'n of the conductor.
~he conductive connector is provided with first and second end portions having a tubular body portion ex ~ tending therebetween. A recessed portion on the body j portion is spaced from the conductive connector first end portion. The conductor end portions extend into the flrs~ and second end portions of the connector with ~ one oflthe conductor end portions being positioned I in abutting relation with the recessed portion. In this manner the conductor end portions are retained in .: .
spaced relation with the body portion. The connector , , ::
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.
is crimped in-to compressing contact with the parted end portions of the conductor to secure the connector thereto.
The conductive connector is preferably a metallic sleeve member that is fabrica-ted ~rom an electrically conductive material and capable of being easily deformed by crimping. The tubular body portion of the metallic sleeve member has an electri_ cal conductance of the conductor -to be spliced. Thus, the metallic sleeve is operable to carry the full conductive capacity of the conductor being spliced. The damaged conductor is prepared ~ -for splicing by severing the damaged portion from the conductor forming a pair of end portions. A suitable amount of insulation ;
is removed from the conductor end portions exposing the strands of wire of the conductor.
The amount of insulation to be removed from theconductor end portions is determined by the length of the metallic sleeve member. With a given quantity of insulation removed from the conductor end portlons, the end portions are extended into the~metallic sleeve member in abutting relation-ship with the insulation remainîng on the conductor.
' ~ . .
,~ ' .
. ~, _6-- , ' ~0~6Z~7 The sleeve member first and second end portions surr~und the respective exposed end portlons of the conductor. The sleeve member end portions are deformed by crimping forming indentations in the sleeve member and securin~ the sleeve to the conductor end portions. In this manner, the exposed end portions of the conductor are maintained in electrical contact with the metallic sleeve member. With the conductor end po~tions secured within the metallic sleeve member a void of up to three inches in length may exist between the end portions of -the conductor coupled together by the metallic sleeve member and provide a splice that carries the full conductive capacity of the spliced conductor. Also, the end portions o~ the metallic sleeve member are flared and are arranged to overlap in abutting relationship the insulation on the end portions of the broken conductor.
Thus, the metallic sleeve member is sealing engaged to the conductor to reduce the dele-terious effects of moisture and abrasion to which the conductor is subjected.
Accordingly, the principal ob~ect of the present invention is to provide a mechanical splice ior a multiconductor cable that coupled the end portions o~ a single broken conductor ' .' ~ .
.. . .
.
" '' . . .
' ,':
- ~)7~7 within the cable in which a portion of the damaged conductor is removed forming a void between the end portions of the spliced conductor.
Another object of the present invention is to provide a mechanical splice for expediently connecting in the field the broken end portions of a single conductor of a multiconductor cable in which the parted end portions of the conductor are joined together in spaced relation by a metallic sleeve -that carries the full conductive capacity of the broken conductor.
n A further object of the present invention~is to provide a mechanical splice for connecting the parted end portions of a single damaged conductor comprising one of a plurality of conductors retained within a multiconductor calbe whereby the cable is efficiently and quickly restored to complete operation in the field without requiring the undamaged conductors -to be severed and spliced together before the cable is returned to operation. ~-I These and other objects of the present invention will be more completely described and dis~losed in the Eollowing specifi~
cation, the accompanying drawings and the appended claims.
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~'~. , '-~L~)76~2'7 BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a view in side elevation of a multi-conductor cable, illustrating a plurality of individual cables with the parted end portions of a single conductor coupled together by the mechanical splice of the present invention.
Figure 2 is a sectional view of the multiconductor cable taken along the line II-II of Figure 1, illustrating the arrangement of the individual insulated conductors within the cable. ~ , J ~
~ Figure 3 is a view in side elevation of the mul-ti-conductor cable, illustrating -the void between the parted end portions of a single conductor within the cable.
DESCRIPTION OF THE PREFERRED E~BODIMENTS
Referring to the drawings 7 there is illustrated a i multiconductor cable 10 having a plurality of individual metallic ; conductors 12, 14, 1~, 18, 20 and 22, each being enclosed with insulation 24. Not only are the individual eonductors insulated ..
from one another but they are also surrounded by cable insulation 26. The cable insulation 26 is, in turn, surrounded by an 20 insulat~on jacket 28. Both cable insulation 26 and the jaoket 26 ~ ' :. ".
- .
_9-., , ~'7~ 7 may be conventionally applied to the insulated conductors 12-22 - as a cont~nuous layer formed from various elastomeric materials such as polyvinylchloride, neoprene or other rubber-like polymers.
In accordance with the present invention, a damaged conductor such as the conductor 12 with broken end portions 30 and 32 is prepared for splioing by first cutting away the damaged or burned out portion of the conductor 12. The end portions 30 . and 32 are then -trimmed to remove a section of the insulation and expose a bundle of individual copper strands 25 as illustrated in Figure 3. With this arrangement the conductor end portions 30 and 32 are spaced apart, and preferably a greater length of - wire is exposed on one ca~le end portion than on the other. In Figure 3 the length of exposed strands o~ end portion 32 is shown greater than the length of exposed strands of end portion 30. A damaged or burned out section of up to three inehes in length may be cut from the conductor 12 wi-th~:bh~e conductor end portions 30 and 32 prepared in the above described manner for splicing.
The bonductor end port~ons 30 and 32 are connected by a conduotive metallic connector or sleeve 34 illustrated in Figure 1, '""';, , ,." ,~, ,~ ' -10, . . .
. . .
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' ~0'7~ 7 having a tubular body por-tion 36 with a longi-tudinal passageway 37 and outwardly flared end portions 38 and 40. The connector 3~ is utilized as a gage in determining the amount of insulation to be removed from the respective conductor end portions 30 and 32 so that the exposed end portions are sealed within the connector 34. Withithis ar~angement sufficient insulation is removed from the wires 2p so that the sleeve end portions 38 and 40 with the conductor end portions 30 and 32 positiond therein abut the insulation 24 remaining on the wires 25. Conseq~ently, the wires 25 of the conductor end portions 30 and 32 are enclosed within the connector 34.
The connector body portion 36 is provided with a recessed portion 42 tha~ is spaced a preselected distance from the connector end por-tion 38, With this arrangement, the conductor end por-tion 30 is i.nser-ted into the tubular body portion 36 and is advanced therein until the end portion 30 abuts the recessed portion 42. In this manner, the recessed por-tion which comprises a pair of indentations formed on opposite sides of the body portion 36 serves as a stop for the condu$tor end portion 30 ~n the -tubular body portion 36. The flared end portion 38 is positioned in abutting rela-tion with the . `
insulation 24 on the conductor end po~tion 30 -to thereby ~etain .' , .
~6~Z7 the exposed end portion 30 entirely within the body portion 36 and reduce the deleterious effects of moisture and abrasion upon the exposed conduc-tor strands.
The connector end portion 38 is deformed in a conven-tionally known manner by forming indenta~ions 44 therein to frictionally eng2ge the connector 34 to the~conductor end portion 30. The metallic connector 34 is fabricated from an electrically conductive material that is easily deformed. With the conductor end portion 30 secured within the metallic conn0ctor 34, the conductor end portion 32 is sinserted in~o the connector end portion 40 so that the outwardly Elared end portions thereof overlap and abut the insulation 24 ~maining on the conductor 12 adjacent the end portion 32. Thereafter, the me-tallic connector 34 is deformed adjacent the end portion 40, forming the indenta--tion 46 therein to frictionally engage the connector end portion 40 to the conductor end portion 32. In this ~lmer, the exposed conductor end portions are securely retained within the metallic connector 34. :
As illustrated in Figure l, the connector 34 retains the ~-coneuctor end portions 30 anù 32 in spaced relationship within the ' :":
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i2;~:'7 passageway 37 to form a void between the conductor end portions 30 and 32. The body portion 36 of the metallic connector 34 is effective to carry the full conductor capacity of the ~onduc~or 12. Therefore~ the electrical current flowing through the conductor end portion 30 is transmitted through the metallic sleeve 34 to the conductor end por~ion 32 without loss of current due to the void between the end portions 30 and 32.
After the end portions 30 and 32 of the conductor 12 are frictionally engaged ~o the metallic connector 34, the spliced conductor 12 is electrically insulated from the remaining undamaged conductors. The connector 34 and several inches of the insulation 24 adjacent the connector end portions 38 and 40 are wrapped with a suitable watertight insulation tape (not shown).
The insulation tape may be of a commercial variety suchlas the elastomeric filler tape sold by the Okanite Company of Ramsey, New Jersey, under the tradename Okanite Filler Tape. Then the insulated splîce and the undamaged ~onductors of cable 10 are gathered together ~or wrapping with additional insulation tape.
" , . . .
The insulation tape is wrapped around the spliced conductor 12 and the remaining conductors of the cable 10 in a helical fashion.
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~0~6Z~7 The sleeve member body portion 36 has an outer diameter substan- -tially equal to the diameter of the~.~ns.~lation 24 surr~unding the conductor. Therefore, with the insulation tape placed around the sleeve 34, the conductor at the point of the splice is substantially equal to the diameter of the unspliced pvrtion of the cable, and-thus the flexibility of the cable 10 is not reduced by the sleeve 34 and surrounding insulation.
The conductors are wrapped with the insulation tape a sufficient number of wraps until the outer surface of the insul-ation wrappings has a diameter substantially equal to the diameterof the cable insulation 26. Subsequent to wrapping the conductors, the recess remaining between the cable insulation 26 and the jacket 28 is filled with additional insulation tape. ~gain a sufficient .:
number of wraps are wound upon the wrapped conductors and the .
cable insulation 26 until the outer surface of the insulation tape is substantially equal to the diameter of the insulation jacket 28 of the cable 10 to insure a flexible cable splice. With this ..
arrangement, the metallic connector 34 couples in spaced relation-ship the conductive end portions 30 and 32 and i5 protected wi~h 20 the other conductors of cable 10 from the deleterious ef~ects of .
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'7 abrasion and moisture. Even though the conductor end portions 30 and 32 are spaced apart in the connector 3~, full conductor capacity is provided by the connector 34 without loss of current between the end portions 30 and 32. Thus, it will be apparent from the above described splice that a broken conductor of a multiconductor cable can be quickly and efficiently spliced with-out requiring that all the conductors of the multiconduct~r cable be parted in order to return the cable to service in the field.
Fur~her~ the conductor of the present invention permits the parted end portions of the conductor to be joined together ~y the conduc-tive sleeve that carries the full conductor capacity of the broken conductors.
According to the provisions of the patent statutes, I
have explained the principle, preferred construction and mode of operation of my invention and have illustrated and described what I now consider -to represent its best embodiments. However, it ; should be ~mderstood that, within the scope of the appended claimsg the invention may be practiced otherwise than as specifically illustrated and described.
_lS-: .' .
.
~ ~ ' ~7~2~t7 A problem is encountered in repairing a cable that has failed due to the adverse conditions that prevail in the mine. Generally, the cable failure is attributed to a break in one of the conductors with a section of the conductor being burned out. Rather than replace the entire multiconduc-tor cable it has been the practice to sever the cable at the point of failure and repalr the cable by splicing each conductor individually, not only the damaged conduc-tor but the undamaged conductors as well. Not only is this procedure for restoring the multiconductor cable to operation extremely time consuming in that each individual conductor muste be spliced, it also substantially weakens the cable.
The conventional multiconduc~or cable splice tends to reduce cable flexibility. By splicing each conductor the diameter of the cable at the point o~ the splice is substantially increased, thereby reducing the cable flexibility. Furthermore, a multiconductor cable spliced ;-; in this manner is more susceptible to the adverse conditions that prevail, incroasing the probability of further failure.
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... ....
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~76227 There is need for a mechanical splice for coupling a single conductor comprising one of a plurality of conductors of a multiconductor cable where the single conductor is the only damaged conductor and the multicon-ductor cable can be expediently restored to operation without cutting the entire cable and splicing each of the conductors separately.
SUMMARY OF THE IMVENTION
In accordance with the present invention, there is provided apparatus for splicing parted end portions of a multiconductor cable that includes a conductive connec-tor for coupling the conductor end portions that are formed by removing the damaged portio'n of the conductor.
~he conductive connector is provided with first and second end portions having a tubular body portion ex ~ tending therebetween. A recessed portion on the body j portion is spaced from the conductive connector first end portion. The conductor end portions extend into the flrs~ and second end portions of the connector with ~ one oflthe conductor end portions being positioned I in abutting relation with the recessed portion. In this manner the conductor end portions are retained in .: .
spaced relation with the body portion. The connector , , ::
.
~ ~ ; ~ 5 ~
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.
is crimped in-to compressing contact with the parted end portions of the conductor to secure the connector thereto.
The conductive connector is preferably a metallic sleeve member that is fabrica-ted ~rom an electrically conductive material and capable of being easily deformed by crimping. The tubular body portion of the metallic sleeve member has an electri_ cal conductance of the conductor -to be spliced. Thus, the metallic sleeve is operable to carry the full conductive capacity of the conductor being spliced. The damaged conductor is prepared ~ -for splicing by severing the damaged portion from the conductor forming a pair of end portions. A suitable amount of insulation ;
is removed from the conductor end portions exposing the strands of wire of the conductor.
The amount of insulation to be removed from theconductor end portions is determined by the length of the metallic sleeve member. With a given quantity of insulation removed from the conductor end portlons, the end portions are extended into the~metallic sleeve member in abutting relation-ship with the insulation remainîng on the conductor.
' ~ . .
,~ ' .
. ~, _6-- , ' ~0~6Z~7 The sleeve member first and second end portions surr~und the respective exposed end portlons of the conductor. The sleeve member end portions are deformed by crimping forming indentations in the sleeve member and securin~ the sleeve to the conductor end portions. In this manner, the exposed end portions of the conductor are maintained in electrical contact with the metallic sleeve member. With the conductor end po~tions secured within the metallic sleeve member a void of up to three inches in length may exist between the end portions of -the conductor coupled together by the metallic sleeve member and provide a splice that carries the full conductive capacity of the spliced conductor. Also, the end portions o~ the metallic sleeve member are flared and are arranged to overlap in abutting relationship the insulation on the end portions of the broken conductor.
Thus, the metallic sleeve member is sealing engaged to the conductor to reduce the dele-terious effects of moisture and abrasion to which the conductor is subjected.
Accordingly, the principal ob~ect of the present invention is to provide a mechanical splice ior a multiconductor cable that coupled the end portions o~ a single broken conductor ' .' ~ .
.. . .
.
" '' . . .
' ,':
- ~)7~7 within the cable in which a portion of the damaged conductor is removed forming a void between the end portions of the spliced conductor.
Another object of the present invention is to provide a mechanical splice for expediently connecting in the field the broken end portions of a single conductor of a multiconductor cable in which the parted end portions of the conductor are joined together in spaced relation by a metallic sleeve -that carries the full conductive capacity of the broken conductor.
n A further object of the present invention~is to provide a mechanical splice for connecting the parted end portions of a single damaged conductor comprising one of a plurality of conductors retained within a multiconductor calbe whereby the cable is efficiently and quickly restored to complete operation in the field without requiring the undamaged conductors -to be severed and spliced together before the cable is returned to operation. ~-I These and other objects of the present invention will be more completely described and dis~losed in the Eollowing specifi~
cation, the accompanying drawings and the appended claims.
. , ; .
': ., _8-' . " .':
.' ' ', . ~ .
~'~. , '-~L~)76~2'7 BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a view in side elevation of a multi-conductor cable, illustrating a plurality of individual cables with the parted end portions of a single conductor coupled together by the mechanical splice of the present invention.
Figure 2 is a sectional view of the multiconductor cable taken along the line II-II of Figure 1, illustrating the arrangement of the individual insulated conductors within the cable. ~ , J ~
~ Figure 3 is a view in side elevation of the mul-ti-conductor cable, illustrating -the void between the parted end portions of a single conductor within the cable.
DESCRIPTION OF THE PREFERRED E~BODIMENTS
Referring to the drawings 7 there is illustrated a i multiconductor cable 10 having a plurality of individual metallic ; conductors 12, 14, 1~, 18, 20 and 22, each being enclosed with insulation 24. Not only are the individual eonductors insulated ..
from one another but they are also surrounded by cable insulation 26. The cable insulation 26 is, in turn, surrounded by an 20 insulat~on jacket 28. Both cable insulation 26 and the jaoket 26 ~ ' :. ".
- .
_9-., , ~'7~ 7 may be conventionally applied to the insulated conductors 12-22 - as a cont~nuous layer formed from various elastomeric materials such as polyvinylchloride, neoprene or other rubber-like polymers.
In accordance with the present invention, a damaged conductor such as the conductor 12 with broken end portions 30 and 32 is prepared for splioing by first cutting away the damaged or burned out portion of the conductor 12. The end portions 30 . and 32 are then -trimmed to remove a section of the insulation and expose a bundle of individual copper strands 25 as illustrated in Figure 3. With this arrangement the conductor end portions 30 and 32 are spaced apart, and preferably a greater length of - wire is exposed on one ca~le end portion than on the other. In Figure 3 the length of exposed strands o~ end portion 32 is shown greater than the length of exposed strands of end portion 30. A damaged or burned out section of up to three inehes in length may be cut from the conductor 12 wi-th~:bh~e conductor end portions 30 and 32 prepared in the above described manner for splicing.
The bonductor end port~ons 30 and 32 are connected by a conduotive metallic connector or sleeve 34 illustrated in Figure 1, '""';, , ,." ,~, ,~ ' -10, . . .
. . .
..
~ ' .,' ;~
' ~0'7~ 7 having a tubular body por-tion 36 with a longi-tudinal passageway 37 and outwardly flared end portions 38 and 40. The connector 3~ is utilized as a gage in determining the amount of insulation to be removed from the respective conductor end portions 30 and 32 so that the exposed end portions are sealed within the connector 34. Withithis ar~angement sufficient insulation is removed from the wires 2p so that the sleeve end portions 38 and 40 with the conductor end portions 30 and 32 positiond therein abut the insulation 24 remaining on the wires 25. Conseq~ently, the wires 25 of the conductor end portions 30 and 32 are enclosed within the connector 34.
The connector body portion 36 is provided with a recessed portion 42 tha~ is spaced a preselected distance from the connector end por-tion 38, With this arrangement, the conductor end por-tion 30 is i.nser-ted into the tubular body portion 36 and is advanced therein until the end portion 30 abuts the recessed portion 42. In this manner, the recessed por-tion which comprises a pair of indentations formed on opposite sides of the body portion 36 serves as a stop for the condu$tor end portion 30 ~n the -tubular body portion 36. The flared end portion 38 is positioned in abutting rela-tion with the . `
insulation 24 on the conductor end po~tion 30 -to thereby ~etain .' , .
~6~Z7 the exposed end portion 30 entirely within the body portion 36 and reduce the deleterious effects of moisture and abrasion upon the exposed conduc-tor strands.
The connector end portion 38 is deformed in a conven-tionally known manner by forming indenta~ions 44 therein to frictionally eng2ge the connector 34 to the~conductor end portion 30. The metallic connector 34 is fabricated from an electrically conductive material that is easily deformed. With the conductor end portion 30 secured within the metallic conn0ctor 34, the conductor end portion 32 is sinserted in~o the connector end portion 40 so that the outwardly Elared end portions thereof overlap and abut the insulation 24 ~maining on the conductor 12 adjacent the end portion 32. Thereafter, the me-tallic connector 34 is deformed adjacent the end portion 40, forming the indenta--tion 46 therein to frictionally engage the connector end portion 40 to the conductor end portion 32. In this ~lmer, the exposed conductor end portions are securely retained within the metallic connector 34. :
As illustrated in Figure l, the connector 34 retains the ~-coneuctor end portions 30 anù 32 in spaced relationship within the ' :":
' ;,''`:-' : ','' ,~' ~12_ ~
, .
'~ ".
., .
- .~ . , . . ~ . . - . .
i2;~:'7 passageway 37 to form a void between the conductor end portions 30 and 32. The body portion 36 of the metallic connector 34 is effective to carry the full conductor capacity of the ~onduc~or 12. Therefore~ the electrical current flowing through the conductor end portion 30 is transmitted through the metallic sleeve 34 to the conductor end por~ion 32 without loss of current due to the void between the end portions 30 and 32.
After the end portions 30 and 32 of the conductor 12 are frictionally engaged ~o the metallic connector 34, the spliced conductor 12 is electrically insulated from the remaining undamaged conductors. The connector 34 and several inches of the insulation 24 adjacent the connector end portions 38 and 40 are wrapped with a suitable watertight insulation tape (not shown).
The insulation tape may be of a commercial variety suchlas the elastomeric filler tape sold by the Okanite Company of Ramsey, New Jersey, under the tradename Okanite Filler Tape. Then the insulated splîce and the undamaged ~onductors of cable 10 are gathered together ~or wrapping with additional insulation tape.
" , . . .
The insulation tape is wrapped around the spliced conductor 12 and the remaining conductors of the cable 10 in a helical fashion.
,'~
. ~,'"'.
.: ~' . '. ', ' -13- ~
~0~6Z~7 The sleeve member body portion 36 has an outer diameter substan- -tially equal to the diameter of the~.~ns.~lation 24 surr~unding the conductor. Therefore, with the insulation tape placed around the sleeve 34, the conductor at the point of the splice is substantially equal to the diameter of the unspliced pvrtion of the cable, and-thus the flexibility of the cable 10 is not reduced by the sleeve 34 and surrounding insulation.
The conductors are wrapped with the insulation tape a sufficient number of wraps until the outer surface of the insul-ation wrappings has a diameter substantially equal to the diameterof the cable insulation 26. Subsequent to wrapping the conductors, the recess remaining between the cable insulation 26 and the jacket 28 is filled with additional insulation tape. ~gain a sufficient .:
number of wraps are wound upon the wrapped conductors and the .
cable insulation 26 until the outer surface of the insulation tape is substantially equal to the diameter of the insulation jacket 28 of the cable 10 to insure a flexible cable splice. With this ..
arrangement, the metallic connector 34 couples in spaced relation-ship the conductive end portions 30 and 32 and i5 protected wi~h 20 the other conductors of cable 10 from the deleterious ef~ects of .
-14- :
'7 abrasion and moisture. Even though the conductor end portions 30 and 32 are spaced apart in the connector 3~, full conductor capacity is provided by the connector 34 without loss of current between the end portions 30 and 32. Thus, it will be apparent from the above described splice that a broken conductor of a multiconductor cable can be quickly and efficiently spliced with-out requiring that all the conductors of the multiconduct~r cable be parted in order to return the cable to service in the field.
Fur~her~ the conductor of the present invention permits the parted end portions of the conductor to be joined together ~y the conduc-tive sleeve that carries the full conductor capacity of the broken conductors.
According to the provisions of the patent statutes, I
have explained the principle, preferred construction and mode of operation of my invention and have illustrated and described what I now consider -to represent its best embodiments. However, it ; should be ~mderstood that, within the scope of the appended claimsg the invention may be practiced otherwise than as specifically illustrated and described.
_lS-: .' .
.
Claims (8)
1. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable comprising, a multiconductor cable having a plurality of separate conduc-tors, each of said conductors having an equal length and a metallic core separately encased by a layer of insulating material, an outer sheath of insulation surrounding all of said conductors, one of said conductors having a damaged metallic core with the damaged portion of said metallic core removed therefrom, said conductor damaged metallic core with said damaged portion being removed therefrom forming a conductor first end portion and a conductor second end portion, said conductor first and second end portions having sections of said layer of insulat-ing material removed therefrom to expose said metallic core and forming end portions of said layer of insulating material sur-rounding said conductor end portions, conductive connecting means for coupling said conductor end portions formed by remov-ing the damaged portion of said conductor, said conductive con-necting means having first and second end portions, a tubular body portion extending between said first and second end portions, a recessed portion spaced a preselected distance from said first end portion on said body portion, said conductor first and second end portions extending into said conductive means first and second end portions respectively with one of said conductor end portions being positioned in abutting relation with said recessed portion such that said exposed metallic core of said conductor end portions are positioned in said body portion, the other of said conductor end portions being positioned in said body por-tion spaced a preselected distance from said one conductor end portion abutting said recessed portion thereby forming a gap between said conductor end portions in said body portion, said gap having a length substantially equal to the length of said damaged portion of said metallic core removed therefrom so that said conductor being spliced by said body portion has a length equal to the lenght of the undamaged conductors of said multi-conductor cable, and said conductive connecting means being crimped into compressing and conductive contact with said parted conductor first and second end portions so that said electrically conductive connecting means conducts current from said conductor first end portion to said conductor second end portion.
2. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 1 which includes, a metallic sleeve member fabricated from an electrically conductive material capable of being deformed.
3. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 2 which includes, said metallic sleeve member having an elec-trical conductance equal to the electrical conductance of said conductor to permit flow of the full current from said conductor first end portion through said tubular body portion to said con-ductor second end portion.
4. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 1 which includes, said conductive connecting means first and second end portions being positioned in abutting relation with said end portion of said layer of insulating material surrounding said conductor first and second end portions.
5. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 1 which includes, said tubular body portion being retained in electrical contact with said conductor first and second end portions retained in spaced relation within said body portion.
6. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 5 which includes, said tubular body portion having an outer diameter substantially equal to the diameter of the insulation surrounding said conductor end portions.
7. Apparatus for splicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 1 which includes, said conductive connecting means body portion being positioned in electrical contact with unequal lengths of said exposed metallic core of said conductor end portions to permit the flow of electrical current from one of said conductor end portions through said tubular body portion to the other conductor end portion.
8. Apparatus for slicing parted end portions of a single damaged conductor of a multiconductor cable as set forth in claim 1 which includes, said conductive connector means first and second end portions being outwardly flared to overlap in abutting relation said layer of insulating material on said conductor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US56239275A | 1975-03-26 | 1975-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076227A true CA1076227A (en) | 1980-04-22 |
Family
ID=24246108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA248,116A Expired CA1076227A (en) | 1975-03-26 | 1976-03-17 | Apparatus for splicing a single conductor of a multiconductor cable |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU499527B2 (en) |
| CA (1) | CA1076227A (en) |
| ZA (1) | ZA761647B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345638A (en) * | 2021-04-25 | 2021-09-03 | 杭州富通电线电缆有限公司 | Cable and control system thereof |
-
1976
- 1976-03-17 CA CA248,116A patent/CA1076227A/en not_active Expired
- 1976-03-17 ZA ZA761647A patent/ZA761647B/en unknown
- 1976-03-24 AU AU12321/76A patent/AU499527B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345638A (en) * | 2021-04-25 | 2021-09-03 | 杭州富通电线电缆有限公司 | Cable and control system thereof |
| CN113345638B (en) * | 2021-04-25 | 2022-08-23 | 杭州富通电线电缆有限公司 | Cable and control system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1232176A (en) | 1977-09-29 |
| AU499527B2 (en) | 1979-04-26 |
| ZA761647B (en) | 1977-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |