US4549039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecommunications cable splice closures
Assignee: Nortel Networks Ltd
•
Filing: 1983-06-10
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Granted: 1985-10-22
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Expires: 2003-06-10
Abstract
Abstract Telecommunications cable with a splice closure covering conductors which have been severed and each having one severed end electrically connected to another cable. The other severed ends of the conductors are placed in series with a coil formed of electrical windings to enable a current to be passed through the coil by passing it through the electrically "dead" parts of the conductors to create an electromagnetic field around the coil to indicate the splice position. Preferably, the coil is formed by windings passing around the cable and these windings may be embedded in the closure.
Inventors
- 👤 Leonard J. Charlebois
- 👤 James E. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:39
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; G; G01; G01V; G01V3/00; G01V3/08; G01V3/10; G01V3/104; G02; G02B; G02B6/00; G02B6/44; G02B6/4439; G02B6/4471; G02B6/4472; H02G15/10; H02G15/117; H02G15/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A telecommunications cable having a plurality of insulated conductors and a splice closure comprising at least two insulated conductors which are severed at the splice to electrically disconnect first parts of these conductors extending from the splice region in one axial direction from second parts extending in the other axial direction, each of said first parts provided to have an electrical connection to an insulated conductor of another cable, a closure around the cable splice region to prevent moisture access to the inside of the cable or to bared electrical conductors at the connection, and a plurality of electrical conductor windings providing a coil which is electrically connected between and in series with said second conductor parts.
Claim 2
Dependent Claim
117 words
A telecommunications cable having a plurality of insulated conductors and a splice closure comprising at least two insulated conductors which are severed at the splice to electrically disconnect first parts of these conductors extending from the splice region in one axial direction from second parts extending in the other axial direction, each of said first parts provided to have an electrical connection to an insulated conductor of another cable, a closure around the cable splice region to prevent moisture access to the inside of the cable or to bared electrical conductors at the connection, and a plurality of electrical conductor windings providing a coil which is electrically connected between and in series with said second conductor parts.
Claim 3
Dependent Claim
20 words
A cable according to claim 1 wherein the coil surrounds the cable by the conductor windings extending around the cable.
Claim 4
Dependent Claim
35 words
A cable according to claim 2 wherein the coil is disposed within the bounds of the closure with any part of the closure outwardly of the coil being devoid of magnetic or electrically conductive material.
Claim 5
Dependent Claim
20 words
A cable according to claim 3 wherein the splice closure comprises a moulded encapsulation of moulded material surrounding the coil.
Claim 6
Independent Claim
116 words
A method of making a splice closure in a telecommunications cable comprising: selecting two insulated conductors of the core of the cable and severing the conductors at a splice region to electrically disconnect first parts of these conductors extending from the splice region in one axial direction from second parts extending in the opposite axial direction; electrically connecting in series between the second conductor parts, a plurality of electrical conductor windings to provide a coil between said second parts, the first conductor parts provided for electrical connection to an insulated conductor of another cable; and forming a closure around the splice region either before or after connecting the coil in series with the second conductor parts.
Claim 7
Independent Claim
116 words
A method of making a splice closure in a telecommunications cable comprising: selecting two insulated conductors of the core of the cable and severing the conductors at a splice region to electrically disconnect first parts of these conductors extending from the splice region in one axial direction from second parts extending in the opposite axial direction; electrically connecting in series between the second conductor parts, a plurality of electrical conductor windings to provide a coil between said second parts, the first conductor parts provided for electrical connection to an insulated conductor of another cable; and forming a closure around the splice region either before or after connecting the coil in series with the second conductor parts.
Claim 8
Dependent Claim
27 words
A method according to claim 5 wherein the coil is formed by passing the electrical conductor windings around the cable so that the coil surrounds the cable.
Claim 9
Dependent Claim
38 words
A method according to claim 6 comprising locating the coil within the bounds of the closure and forming all parts of the closure outwardly of the coil from material which is devoid of magnetic or electrically conductive material.
Claim 10
Dependent Claim
22 words
A method according to claim 7 comprising forming parts of the closure surrounding the coil from a moulded encapsulation of moulded material.
References Cited (Backward Citations)
US4055796A
Cited
US4322573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |