Patent US2623324A successfully refreshed from Google Patents.
Patent US3795757A successfully refreshed from Google Patents.
US3795757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distribution cable with permanently connected branch cables and method of effecting said connections
Assignee: Balfour Beatty PLC
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Filing: 1972-10-02
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Granted: 1974-03-05
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Expires: 1992-10-02
Abstract
Abstract An electrical distribution cable comprises a neutral conductor and a number of insulated power conductors all helically laid up together and having branch cables permanently connected to it at spaced locations along its length before it is installed. Each of the branch cables comprises at least one insulated power conductor which is connected to a power conductor of the distribution cable and a neutral conductor, in the form of an outer concentric conductor which is connected to the neutral conductor of the distribution cable by a metal strip wrapped around the outer concentric conductor of the branch cable and the assembly of cores of the distribution cable and permanently secured to the outer concentric conductor of the branch cable and to the neutral conductor of the distribution cable.
Inventors
- 👤 P Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
H; H01; H01B; H01B9/00; H01R; H01R4/00; H01R4/58; H01R4/64; H01R4/646; H02; H02G; H02G15/00; H02G15/003
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
123 words
A distribution cable comprising a neutral conductor and a number of insulated power conductors all helically laid up together and having branch cables permanently connected to it at spaced locations along its length before it is installed, each of which branch cables comprises at least one insulated power conductor which is connected to a power conductor of the distribution cable and an outer concentric conductor which is electrically and mechanically connected to the neutral conductor of the distribution cable by a metal strip wrapped around the outer concentric conductor of the branch cable and the assembly of cores of the distribution cable and permanently secured to the outer concentric conductor of the branch cable and to thE neutral conductor of the distribution cable.
Claim 2
Dependent Claim
123 words
A distribution cable comprising a neutral conductor and a number of insulated power conductors all helically laid up together and having branch cables permanently connected to it at spaced locations along its length before it is installed, each of which branch cables comprises at least one insulated power conductor which is connected to a power conductor of the distribution cable and an outer concentric conductor which is electrically and mechanically connected to the neutral conductor of the distribution cable by a metal strip wrapped around the outer concentric conductor of the branch cable and the assembly of cores of the distribution cable and permanently secured to the outer concentric conductor of the branch cable and to thE neutral conductor of the distribution cable.
Claim 3
Dependent Claim
65 words
A distribution cable as claimed in claim 1, wherein the metal strip is preformed to a cross-sectional shape approximating that of a dumb-bell, one part of the dumb-bell fitting tightly around the outer concentric conductor of the branch cable and the other part of the dumb-bell being divided into two separable parts which together fit tightly around the assembly of cores of the distribution cable.
Claim 4
Dependent Claim
31 words
A distribution cable as claimed in claim 1 wherein the assembly of conductors of the distribution cable is surrounded by an outer conductive layer in electrical contact with the neutral conductor.
Claim 5
Dependent Claim
24 words
A distribution cable as claimed in claim 3, wherein the metal strip is permanently secured to the outer conductive layer of the distribution cable.
Claim 6
Dependent Claim
33 words
A distribution cable as claimed in claim 1, wherein at least two branch cables are connected at each of at least some of said spaced locations along the length of the distribution cable.
Claim 7
Dependent Claim
29 words
A distribution cable as claimed in claim 1, wherein at least some of the permanently connected branch cables are of sufficient length to be used directly as service cables.
Claim 8
Dependent Claim
72 words
A distribution cable as claimed in claim 1, wherein the power conductors of the distribution cable and of the branch cables are individually insulated with an insulating material selected from the group of materials consisting of rubber and plastic materials and wherein the distribution cable and each branch cable are each individually protected by a sheath of an insulating material selected from the group of materials consisting of rubber and plastic materials.
Claim 9
Dependent Claim
55 words
A distribution cable as claimed in claim 7, wherein each permanent connection between the distribution cable and a branch cable at each spaced location along the length of the distribution cable is surrounded and protected by a moulded body of an insulating material selected from the group of materials consisting of rubber and plastic materials.
Claim 10
Independent Claim
158 words
A method of permanently connecting a branch cable comprising at least one insulated power conductor and a neutral conductor to a distribution cable before the distribution cable is installed, said distribution cable comprising a neutral conductor and a number of insulated power conductors all helically laid up together, which method includes the steps of cutting back an end of the branch cable to expose the neutral conductor and the power conductor that is to be connected to a power conductor of the distribution cable; applying a metal strip around the assembly of cores of the distribution cable and around the exposed neutral conductor of the branch cable; permanently electrically and mechanically connecting the metal strip to the neutral conductor of the distribution cable and to the neutral conductor of the branch cable; electrically connecting the exposed power conductor of the branch cable to a power conductor of the distribution cable; and applying insulation to the connections thus made.
Claim 11
Independent Claim
158 words
A method of permanently connecting a branch cable comprising at least one insulated power conductor and a neutral conductor to a distribution cable before the distribution cable is installed, said distribution cable comprising a neutral conductor and a number of insulated power conductors all helically laid up together, which method includes the steps of cutting back an end of the branch cable to expose the neutral conductor and the power conductor that is to be connected to a power conductor of the distribution cable; applying a metal strip around the assembly of cores of the distribution cable and around the exposed neutral conductor of the branch cable; permanently electrically and mechanically connecting the metal strip to the neutral conductor of the distribution cable and to the neutral conductor of the branch cable; electrically connecting the exposed power conductor of the branch cable to a power conductor of the distribution cable; and applying insulation to the connections thus made.
Claim 12
Independent Claim
178 words
A method of permanently connecting a branch cable comprising at least one insulated power conductor and a neutral conductor to a distribution cable before the distribution cable is installed, said distribution cable comprising a neutral conductor and a number of insulated power conductors all helically laid up together, which method includes the steps of cutting back an end of the branch cable to expose the neutral conductor and the power conductor that is to be connected to a power conductor of the distribution cable; applying a metal strip around the assembly of cores of the distribution cable and around the exposed neutral conductor of the branch cable; permanently electrically and mechanically connecting the metal strip to the neutral conductor of the distribution cable and to the neutral conductor of the branch cable; electrically connecting the exposed power conductor of the branch cable to a power conductor of the distribution cable; fitting a mould arouNd the distribution cable in the vicinity of each connection thus made; and introducing a hardenable insulating compound into the mould to insulate the connection.
Claim 13
Independent Claim
178 words
A method of permanently connecting a branch cable comprising at least one insulated power conductor and a neutral conductor to a distribution cable before the distribution cable is installed, said distribution cable comprising a neutral conductor and a number of insulated power conductors all helically laid up together, which method includes the steps of cutting back an end of the branch cable to expose the neutral conductor and the power conductor that is to be connected to a power conductor of the distribution cable; applying a metal strip around the assembly of cores of the distribution cable and around the exposed neutral conductor of the branch cable; permanently electrically and mechanically connecting the metal strip to the neutral conductor of the distribution cable and to the neutral conductor of the branch cable; electrically connecting the exposed power conductor of the branch cable to a power conductor of the distribution cable; fitting a mould arouNd the distribution cable in the vicinity of each connection thus made; and introducing a hardenable insulating compound into the mould to insulate the connection.
Claim 14
Dependent Claim
22 words
A method as claimed in claim 10, which includes the additional step of removing the mold after the insulating compound has set.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |