US3322889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric trailing cables with failure limiting means
Assignee: Associated Electrical Industries Ltd
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Filing: 1964-09-14
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Granted: 1967-05-30
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Bird Dennis Walter
- 👤 Johnson Oliver Sanders
- 👤 Bennett Harold Roy
- 👤 Leeder George Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:46
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/04; H01B7/041; H01B7/17; H01B7/18; H01B7/182; H01B7/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN ELECTRIC CABLE COMPRISING: (A) A NUMBER OF CONDUCTORS, (B) A RESPECTIVE INSULATION COVERINGS OF ELASTOMERIC MATERIAL FOR INDIVIDUAL ONES OF SAID CONDUCTORS, (C) A FLEXIBLE OUTER SHEATH OF ELASTOMERIC MATERIAL SURROUNDING SAID CONDUCTORS AS A WHOLE, (D) FIBROUS MATERIAL REINFORCING SAID OUTER SHEATH TO ENHANCE ITS CIRCUMFERENTIAL STRENGTH, AND (E) FIBROUS MATERIAL REINFORCING EACH INDIVIDUAL CONDUCTOR INSULATION COVERING TO ENHANCE ITS CIRCUMFERENTIAL STRENGTH, THE REINFORCING FIBROUS MATERIAL FOR THE SHEATH HAVING A HIGH PERCENT ELONGATION AT BREAK AND THE REINFORCING FIBROUS MATERIAL FOR EACH INDIVIDUAL CONDUCTOR INSULATION COVERING HAVING A LOW PERCENT ELONGATION AT BREAK SO THAT, UNDER ARCING CONDITIONS AT A BREAK IN AN INSULATED CONDUCTOR OF THE CABLE, THE ENERGY RELEASED INTO THE INTERSHEATH SPACE ON RUPTURE OF THE INSULATION COVERING OF THAT CONDUCTOR CAN BE RELIABLY CONTAINED, AT LEAST TEMPORARILY BY THE REINFORCED CABLE SHEATH.
Claim 2
Dependent Claim
139 words
AN ELECTRIC CABLE COMPRISING: (A) A NUMBER OF CONDUCTORS, (B) A RESPECTIVE INSULATION COVERINGS OF ELASTOMERIC MATERIAL FOR INDIVIDUAL ONES OF SAID CONDUCTORS, (C) A FLEXIBLE OUTER SHEATH OF ELASTOMERIC MATERIAL SURROUNDING SAID CONDUCTORS AS A WHOLE, (D) FIBROUS MATERIAL REINFORCING SAID OUTER SHEATH TO ENHANCE ITS CIRCUMFERENTIAL STRENGTH, AND (E) FIBROUS MATERIAL REINFORCING EACH INDIVIDUAL CONDUCTOR INSULATION COVERING TO ENHANCE ITS CIRCUMFERENTIAL STRENGTH, THE REINFORCING FIBROUS MATERIAL FOR THE SHEATH HAVING A HIGH PERCENT ELONGATION AT BREAK AND THE REINFORCING FIBROUS MATERIAL FOR EACH INDIVIDUAL CONDUCTOR INSULATION COVERING HAVING A LOW PERCENT ELONGATION AT BREAK SO THAT, UNDER ARCING CONDITIONS AT A BREAK IN AN INSULATED CONDUCTOR OF THE CABLE, THE ENERGY RELEASED INTO THE INTERSHEATH SPACE ON RUPTURE OF THE INSULATION COVERING OF THAT CONDUCTOR CAN BE RELIABLY CONTAINED, AT LEAST TEMPORARILY BY THE REINFORCED CABLE SHEATH.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |