US3728474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded power cable
Assignee: ANACONDA ACQUISITION Co
•
Filing: 1971-11-15
•
Granted: 1973-04-17
•
Expires: 1991-11-15
Abstract
Abstract Electric power cables with semiconducting jackets have stranded or bunched drain conductors embedded in the jackets, in line with the cable axis.
Inventors
- 👤 E Arnaudin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/02; H01B9/026
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
An electric power cable comprising: A. a conductor, B. a wall of insulation surrounding said conductor, C. a thick jacket of semiconducting polymeric material directly surrounding said wall of insulation, and D. a plurality of bunch stranded drain conductors embedded in said jacket substantially in line with the axis of said cable, E. said drain conductors each comprising a plurality of wires, each of the wires within one of said plurality of wires being helically wound around at least one other wire within said plurality of wires.
Claim 2
Dependent Claim
87 words
An electric power cable comprising: A. a conductor, B. a wall of insulation surrounding said conductor, C. a thick jacket of semiconducting polymeric material directly surrounding said wall of insulation, and D. a plurality of bunch stranded drain conductors embedded in said jacket substantially in line with the axis of said cable, E. said drain conductors each comprising a plurality of wires, each of the wires within one of said plurality of wires being helically wound around at least one other wire within said plurality of wires.
Claim 3
Dependent Claim
19 words
The cable of claim 1 wherein said wires are selected from the group consisting of copper and copper alloys.
Claim 4
Dependent Claim
19 words
The cable of claim 1 wherein said wires are selected from the group consisting of aluminum and aluminum alloys.
Claim 5
Dependent Claim
16 words
The cable of claim 1 wherein said bunch-stranded drain conductors are flattened to an oval shape
Claim 6
Dependent Claim
16 words
The cable of claim 2 wherein said bunch-stranded drain conductors are flattened to an oval shape.
Claim 7
Dependent Claim
16 words
The cable of claim 3 wherein said bunch-stranded drain conductors are flattened to an oval shape.
References Cited (Backward Citations)
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Cited
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |