Patent US3801729A successfully refreshed from Google Patents.
US3801729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armored submarine electric power cable with a plurality of grounding devices for a layer thereof
Assignee: Pirelli and C SpA
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Filing: 1973-07-13
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Granted: 1974-04-02
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Expires: 1993-07-13
Abstract
Abstract Devices for conductively interconnecting the frettage and the armor of a submarine electric power cable and a power cable including such devices, the devices including a C-shaped clamping element mounted on the frettage and covered by an insulating sheath except for a small hole over a threaded hole in the clamping element and including a threaded element extending through the sheath hole and into the threaded hole of the clamping element. The threaded element may have arms or spokes to assist in screwing it into place and the threaded element is covered by and in contact with the surrounding armor. The clamping elements are applied to the frettage prior to the extrusion of the insulating sheath thereover, holes are successively punched into the sheath over the threaded hole in the clamping element, the threaded elements are successively inserted and the armor is then applied.
Inventors
- 👤 G Portinari
- 👤 S Giovanni
- 👤 A Brovedan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:00
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/009; H01B7/14; H01B9/00; H01B9/02; H01B9/028; H01R; H01R4/00; H01R4/58; H01R4/64; H01R4/646
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
In a process for manufacturing a submarine electric power cable comprising a conductive frettage, an insulating sheath around said frettage, a conductive armoring layer around said sheath and means conductively interconnecting said armor and said frettage at spaced positions along the length of said cable in which process after said frettage is formed, said sheath is extruded over said frettage and said armoring layer is applied to said sheath, the steps of applying conductive elements to said frettage at spaced positions thereon after the formation of said frettage and prior to the extrusion of said sheath thereover, whereby said conductive elements become covered by said sheath, and as said armoring layer is applied over said sheath, inserting further conductive elements through said sheath and into contact with said first-mentioned conductive elements while maintaining portions of said further elements exposed to said armoring layer for contact therewith.
Claim 2
Dependent Claim
146 words
In a process for manufacturing a submarine electric power cable comprising a conductive frettage, an insulating sheath around said frettage, a conductive armoring layer around said sheath and means conductively interconnecting said armor and said frettage at spaced positions along the length of said cable in which process after said frettage is formed, said sheath is extruded over said frettage and said armoring layer is applied to said sheath, the steps of applying conductive elements to said frettage at spaced positions thereon after the formation of said frettage and prior to the extrusion of said sheath thereover, whereby said conductive elements become covered by said sheath, and as said armoring layer is applied over said sheath, inserting further conductive elements through said sheath and into contact with said first-mentioned conductive elements while maintaining portions of said further elements exposed to said armoring layer for contact therewith.
Claim 3
Dependent Claim
33 words
In a process as set forth in claim 1, the further step of perforating said sheath at positions corresponding to said first-mentioned conductive elements prior to the insertion of said further conductive elements.
Claim 4
Dependent Claim
108 words
A submarine electric power cable comprising a core, a conductive frettage around said core, an insulating sheath around said frettage, a conductive armoring layer around said sheath and a plurality of means spaced lengthwise of said cable and conductively interconnecting said frettage and said armoring layer, each of said means comprising a clamping element between said frettage and said sheath and having an inner surface conforming to and gripping the exterior surface of said frettage and an outwardly facing threaded hole and a threaded element extending from externally of said sheath and in engagement with said armoring layer to and into said threaded hole in said clamping element.
Claim 5
Dependent Claim
108 words
A submarine electric power cable comprising a core, a conductive frettage around said core, an insulating sheath around said frettage, a conductive armoring layer around said sheath and a plurality of means spaced lengthwise of said cable and conductively interconnecting said frettage and said armoring layer, each of said means comprising a clamping element between said frettage and said sheath and having an inner surface conforming to and gripping the exterior surface of said frettage and an outwardly facing threaded hole and a threaded element extending from externally of said sheath and in engagement with said armoring layer to and into said threaded hole in said clamping element.
Claim 6
Dependent Claim
21 words
A cable as set forth in claim 3, wherein said clamping element is made of beryllium-copper and resiliently grips said frettage.
Claim 7
Dependent Claim
66 words
A cable as set forth in claim 3, wherein said clamping element is C-shaped in cross-section and has a plate secured to the outer surface thereof, said threaded hole being in said plate, and wherein said threaded element is a headed screw which has its head outwardly of said sheath and has its threaded portion in engagement with the threads in the wall of said hole.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |