US3603718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical cable structure
Assignee: Wintershall Dea International AG
•
Filing: 1970-04-10
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Granted: 1971-09-07
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Expires: 1990-04-10
Abstract
Abstract Electrical cable structure that is adapted for downhole oil well use or for similar conditions. There are open channels under the sheath with gas permeable walls for dissipating accumulation of hydrocarbon gas.
Inventors
- 👤 Rudolf Karl Heinz Gedenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:26
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/06; H01B9/0611
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
An electrical cable, comprising in combination at least one conductor having an electrically insulating coating thereon, an outer sheathing of flexible electrically insulating material surrounding said conductor, said sheathing being impervious to liquid hydrocarbons, and at least one open channel within said sheathing for carrying gas away from the interior thereof.
Claim 2
Dependent Claim
51 words
An electrical cable, comprising in combination at least one conductor having an electrically insulating coating thereon, an outer sheathing of flexible electrically insulating material surrounding said conductor, said sheathing being impervious to liquid hydrocarbons, and at least one open channel within said sheathing for carrying gas away from the interior thereof.
Claim 3
Dependent Claim
23 words
An electrical cable according to claim 1 further including gas permeable material filling the spaces between said conductor, said sheathing and said channel.
Claim 4
Dependent Claim
15 words
A cable according to claim 2 wherein said combination comprises a plurality of said conductors.
Claim 5
Dependent Claim
21 words
A cable according to claim 3 comprising a power supply cable having three conductors, and having three of said open channels.
Claim 6
Dependent Claim
94 words
An electrical power supply cable for use downhole in oil wells and the like containing a range of heavy and light hydrocarbons under superatmospheric pressure, comprising in combination three stranded conductors each having an electrically insulating coating thereon, an outer sheathing constructed of an electrically insulating material that will withstand heavy hydrocarbons but is penetrable by gaseous hydrocarbons, three tubular inserts spaced between said conductors and said sheathing to form open channels within said sheathing, said inserts having freely permeable walls, and permeable filler material filling the spaces within said sheathing surrounding said channels.
Claim 7
Dependent Claim
94 words
An electrical power supply cable for use downhole in oil wells and the like containing a range of heavy and light hydrocarbons under superatmospheric pressure, comprising in combination three stranded conductors each having an electrically insulating coating thereon, an outer sheathing constructed of an electrically insulating material that will withstand heavy hydrocarbons but is penetrable by gaseous hydrocarbons, three tubular inserts spaced between said conductors and said sheathing to form open channels within said sheathing, said inserts having freely permeable walls, and permeable filler material filling the spaces within said sheathing surrounding said channels.
Claim 8
Dependent Claim
13 words
The combination according to claim 5, wherein said permeable filler material is fibrous.
Claim 9
Dependent Claim
18 words
The combination according to claim 5, wherein said permeable filler material is synthetic foam having perforated cell walls.
References Cited (Backward Citations)
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Cited
US2799720A
Cited
US2910524A
Cited
US3149199A
Cited
US3517110A
Cited
US3526086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |