US3325325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making polyethylene insulated electrical conductors
Assignee: General Electric Co
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Filing: 1962-12-17
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Granted: 1967-06-13
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Robert A Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:02
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/02; H01B9/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS FOR FORMING AN INSULATED ELECTRICAL CONDUCTOR OF IMPROVED CORONA RESISTANCE WHICH COMPRISES (1) FORMING A COATING OF CARBON-BLACK FILLED CROSS-LINKED POLYETHYLENE ON THE SURFACE OF AN ELECTRICAL CONDUCTOR, (2) WRAPPING A STRETCHED, CROSS-LINKED POLYETHYLENE TAPE IN OVERLAPPING FASHION ABOUT SAID COATING AND (3) HEATING THE RESULTING ASSEMBLY ABOVE THE TEMPERATURE AT WHICH SAID TAPE TENDS TO SHRINK, WHEREBY THE SHRINKAGE OF SAID TAPE COMPRESSES SAID COATING BETWEEN SAID CONDUCTOR AND SAID TAPE TO FORM AN INSULATED ELECTRICAL CONDUCTOR HAVING A SUBSTANTIALLY VOID-FREE SEMICONDUCTING LAYER IN CONTACT WITH SAID CONDUCTOR AND A SUBSTNATIALLY VOID-FREE OUTER INSULATING LAYER SURROUNDING AND IN CONTACT WITH SAID SEMICONDUCTING LAYER.
Claim 2
Dependent Claim
106 words
THE PROCESS FOR FORMING AN INSULATED ELECTRICAL CONDUCTOR OF IMPROVED CORONA RESISTANCE WHICH COMPRISES (1) FORMING A COATING OF CARBON-BLACK FILLED CROSS-LINKED POLYETHYLENE ON THE SURFACE OF AN ELECTRICAL CONDUCTOR, (2) WRAPPING A STRETCHED, CROSS-LINKED POLYETHYLENE TAPE IN OVERLAPPING FASHION ABOUT SAID COATING AND (3) HEATING THE RESULTING ASSEMBLY ABOVE THE TEMPERATURE AT WHICH SAID TAPE TENDS TO SHRINK, WHEREBY THE SHRINKAGE OF SAID TAPE COMPRESSES SAID COATING BETWEEN SAID CONDUCTOR AND SAID TAPE TO FORM AN INSULATED ELECTRICAL CONDUCTOR HAVING A SUBSTANTIALLY VOID-FREE SEMICONDUCTING LAYER IN CONTACT WITH SAID CONDUCTOR AND A SUBSTNATIALLY VOID-FREE OUTER INSULATING LAYER SURROUNDING AND IN CONTACT WITH SAID SEMICONDUCTING LAYER.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |