US4572926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armored electrical cable with lead sheath
Assignee: Hubbell Inc
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Filing: 1984-10-02
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Granted: 1986-02-25
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Expires: 2004-10-02
Abstract
Abstract An armored electrical cable which is especially useful in oil wells and provides resistance to corrosion, explosive decompression and transverse compressive forces. The cable comprises an insulated conductor, a barrier layer enclosing the insulation, a filler layer enclosing the barrier layer, and a square compression-resistant layer enclosing the filler layer. The barrier layer is a lead sheath having a closed cross section with an exterior including four right angle corners oriented in a square and four convex areas, each interconnecting a pair of adjacent right angle corners. The filler layer comprises a thermosetting tape, an open-mesh fabric tape, and a polymeric tape of low frictional coefficient.
Inventors
- 👤 Robert Ganssle
- 👤 Ernest G. Hoffman
- 👤 David H. Neuroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:46
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/04; H01B7/046; H01B7/08; H01B7/0869; H01B7/17; H01B7/18; H01B7/28; H01B7/2806
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
88 words
An electrical cable, the combination comprising: an electrical conductor; an insulation layer enclosing said conductor; a barrier layer enclosing said insulation layer; said barrier layer having a continuous cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners; a filler layer enclosing said barrier layer; and a compression-resistant layer enclosing said filler layer and having a substantially square cross section.
Claim 2
Dependent Claim
88 words
An electrical cable, the combination comprising: an electrical conductor; an insulation layer enclosing said conductor; a barrier layer enclosing said insulation layer; said barrier layer having a continuous cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners; a filler layer enclosing said barrier layer; and a compression-resistant layer enclosing said filler layer and having a substantially square cross section.
Claim 3
Dependent Claim
13 words
A cable according to claim 1, wherein said insulation layer is substantially cylindrical.
Claim 4
Dependent Claim
12 words
A cable according to claim 1, wherein said barrier layer is metallic.
Claim 5
Dependent Claim
14 words
A cable according to claim 1, wherein said barrier layer is formed of lead.
Claim 6
Dependent Claim
18 words
A cable according to claim 1, wherein said barrier layer cross section is thinnest at said convex areas.
Claim 7
Dependent Claim
30 words
A cable according to claim 1, wherein said convex areas each define an arc of a circle having a common center point with said circular interior of said cross section.
Claim 8
Dependent Claim
15 words
A cable according to claim 1, wherein said filler layer comprises a cured thermosetting material.
Claim 9
Dependent Claim
14 words
A cable according to claim 1, wherein said filler layer comprises an open-mesh fabric.
Claim 10
Dependent Claim
14 words
A cable according to claim 1, wherein said filler layer comprises a polymeric layer.
Claim 11
Dependent Claim
19 words
A cable according to claim 1, wherein said filler layer comprises a cured thermosetting material, and an open-mesh fabric.
Claim 12
Dependent Claim
17 words
A cable according to claim 1, wherein said compression-resistant layer comprises a pair of substantially U-shaped struts.
Claim 13
Dependent Claim
112 words
An armored electrical cable, the combination comprising: a plurality of conductor assemblies in a sid-by-side relationship, each conductor assembly comprising an electrical conductor, an insulation layer enclosing said conductor, a barrier layer enclosing said insulation layer, said barrier layer having a continuous cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners, a filler layer enclosing said barrier layer, and a compression-resistant layer enclosing said filler layer and having a substantially square cross section, and an armor layer enclosing said plurality of conductor assemblies.
Claim 14
Dependent Claim
112 words
An armored electrical cable, the combination comprising: a plurality of conductor assemblies in a sid-by-side relationship, each conductor assembly comprising an electrical conductor, an insulation layer enclosing said conductor, a barrier layer enclosing said insulation layer, said barrier layer having a continuous cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners, a filler layer enclosing said barrier layer, and a compression-resistant layer enclosing said filler layer and having a substantially square cross section, and an armor layer enclosing said plurality of conductor assemblies.
Claim 15
Dependent Claim
15 words
A cable according to claim 12, wherein said cable has a substantially rectangular cross section.
Claim 16
Dependent Claim
14 words
A cable according to claim 12, wherein said cable has a curved cross section.
Claim 17
Dependent Claim
20 words
A cable according to claim 12, wherein said barrier layer in each of said conductor assemblies is formed of lead.
Claim 18
Dependent Claim
67 words
An electrical cable, the combination comprising: an electrical conductor; an insulation layer enclosing said conductor; and a barrier layer enclosing said insulation layer; said barrier layer having a continuous cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners.
Claim 19
Dependent Claim
67 words
An electrical cable, the combination comprising: an electrical conductor; an insulation layer enclosing said conductor; and a barrier layer enclosing said insulation layer; said barrier layer having a continuous cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners.
Claim 20
Dependent Claim
12 words
A cable according to claim 16, wherein said barrier layer is metallic.
Claim 21
Dependent Claim
14 words
A cable according to claim 16, wherein said barrier layer is formed of lead.
Claim 22
Dependent Claim
18 words
A cable according to claim 16, wherein said barrier layer cross section is thinnest at said convex areas.
Claim 23
Dependent Claim
30 words
A cable according to claim 16, wherein said convex areas each define an arc of a circle having a common center point with said circular interior of said cross section.
Claim 24
Dependent Claim
67 words
An electrical cable, the combination comprising: an electrical conductor; an insulation layer enclosing said conductor; and a barrier layer completely enclosing said insulation layer; said barrier layer having a cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners.
Claim 25
Dependent Claim
67 words
An electrical cable, the combination comprising: an electrical conductor; an insulation layer enclosing said conductor; and a barrier layer completely enclosing said insulation layer; said barrier layer having a cross section including an interior which is substantially circular and an exterior which includes four right angle corners oriented in a square array and four convex areas, each convex area interconnecting a pair of adjacent right angle corners.
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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) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |