Patent US3876462A successfully refreshed from Google Patents.
US3876462A
Expired / Lapsed
US
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Insulated cable with layer of controlled peel strength
Assignee: Essex International Inc
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Filing: 1973-10-15
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Granted: 1975-04-08
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Expires: 1993-10-15
Abstract
Abstract A high voltage electrical cable having at least two layers of cross-linked polyolefin insulation, i.e. polyethylene; the external layer being semi-conductive and strippable from the internal layer. Controlled strippability is accomplished by sulfonating the respective layers at their contact interface.
Inventors
- 👤 Francis F Carini
- 👤 Steven Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:46
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/30; B; B29; B29C; B29C48/00; B29C48/022; B29C48/25; B29C48/30; B29C48/304; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B7/00; H01B7/38; H01B9/00; H01B9/02; H01B9/027; B29C48/03; B29C48/05; B29C48/06; B29K; B29K2101/00; B29K2101/10; B29K2105/00; B29K2105/06; B29K2105/20; B29K2301/00; B29K2301/10; B29L; B29L2031/00; B29L2031/34; B29L2031/3462; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/2973; Y10T428/2978; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A HIGH VOLTAGE INSULATED ELECTRIC CABLE HAVING AT LEAST TWO POLYMER LAYERS THEREON COMPRISING IN COMBINATION: A CONDUCTOR: AN INSULATING LAYER COMPRISING A CROSS-LINKED POLYOLEFIN SURROUNDING THE CONDUCTOR; AND A SEMI-CONDUCTIVE, EXTERNAL LAYER OF CROSS-LINKED, SEMICONDUCTIVE POLYOLEFIN SURROUNDING THE CONDUCTOR AND STRIPPABLY BONDED TO SAID INSULATING LAYER, THE OUTER SURFACE OF SAID INSULATING LAYER BEING SULFONATED TO THE EXTENT REQUIRED TO PRODUCE COHESIVE FORCES BETWEEN SAID INSULATING LAYER AND SEMI-CONDUCTIVE LAYER WITHIN THE RANGE PERMITTING STRIPPING SAID SEMI-CONDUCTIVE LAYER FROM SAID INSULATING LAYER WHEN SPLICING OR TERMINATING SAID CABLE WHILE REMAINING SECURELY ADHERED IN NORMAL USE.
Claim 2
Dependent Claim
96 words
A HIGH VOLTAGE INSULATED ELECTRIC CABLE HAVING AT LEAST TWO POLYMER LAYERS THEREON COMPRISING IN COMBINATION: A CONDUCTOR: AN INSULATING LAYER COMPRISING A CROSS-LINKED POLYOLEFIN SURROUNDING THE CONDUCTOR; AND A SEMI-CONDUCTIVE, EXTERNAL LAYER OF CROSS-LINKED, SEMICONDUCTIVE POLYOLEFIN SURROUNDING THE CONDUCTOR AND STRIPPABLY BONDED TO SAID INSULATING LAYER, THE OUTER SURFACE OF SAID INSULATING LAYER BEING SULFONATED TO THE EXTENT REQUIRED TO PRODUCE COHESIVE FORCES BETWEEN SAID INSULATING LAYER AND SEMI-CONDUCTIVE LAYER WITHIN THE RANGE PERMITTING STRIPPING SAID SEMI-CONDUCTIVE LAYER FROM SAID INSULATING LAYER WHEN SPLICING OR TERMINATING SAID CABLE WHILE REMAINING SECURELY ADHERED IN NORMAL USE.
Claim 3
Dependent Claim
14 words
The cable of claim 1 wherein said range of cohesive force is between 2
Claim 4
Dependent Claim
14 words
The cable of claim 1 in which said range of cohesive force is 0-16
Claim 5
Dependent Claim
31 words
The cable of claim 1 wherein said insulating layer is polyethylene cross-linked with dicumyl peroxide and said semiconductive layer is a polymer of ethylene and an alpha olefin containing conductive carbon
Claim 6
Dependent Claim
22 words
The cable of claim 1 wherein an internal layer of cross-linked, semi-conductive polyethylene is disposed between the conductor and the insulating layer.
References Cited (Backward Citations)
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US3586569A
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US3624054A
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US3646248A
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US3684821A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |