US3614290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-type cable comprising aluminum conductors with high-elastic-modulus tensile strands
Assignee: Ericsson Inc
•
Filing: 1970-03-25
•
Granted: 1971-10-19
•
Expires: 1990-03-25
Abstract
Abstract Aluminum pipe-type cable conductors comprise high elasticmodulus core strands so that long continuous lengths can be pulled into a pipe.
Inventors
- 👤 Walter J Plate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:53
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/06; H01B9/0611
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
13 words
a layer of aluminum forming an electrical conducting core surrounding said tensile strand,
Claim 2
Dependent Claim
11 words
The cable of claim 1 wherein said tensile strand comprises steel.
Claim 3
Dependent Claim
26 words
The cable of claim 1 wherein said pipes form at least one angle having the effect of increasing the force required to pull in said conductor.
Claim 4
Dependent Claim
9 words
a wall of taped insulation surrounding said conducting core,
Claim 5
Dependent Claim
8 words
a conducting shielding layer surrounding said insulation, and
Claim 6
Dependent Claim
24 words
The cable of claim 1 wherein said pipe comprises a grade having the effect of increasing the force required to pull in said conductor.
Claim 7
Dependent Claim
19 words
The cable of claim 1 comprising three of said insulated conductors within said pipe sections for transmitting 3-phase current.
Claim 8
Dependent Claim
36 words
a helical skid wire surrounding said shielding layer, B. a plurality of sections of interconnected rigid pipe containing said insulated conductor, and C. insulating fluid under superatmospheric pressure filling said pipe sections and penetrating said insulation.
Claim 9
Dependent Claim
70 words
An insulated conductor for a pipe-type cable comprising: A. at least three high-elastic-modulus tensile strands, B. a plurality of aluminum conductor wires compressed into a shaped sector around each of said strands, said sectors being fitted together to form a substantially circular core, C. a wall of taped insulation surrounding said core, D. a conducting shielding layer surrounding said insulation, and E. a helical skid wire surrounding said shielding layer.
Claim 10
Dependent Claim
17 words
The conductor of claim 6 comprising an additional high-elastic-modulus tensile strand at the center of said core.
Claim 11
Dependent Claim
11 words
The conductor of claim 7 wherein said tensile strands comprise steel.
Claim 12
Dependent Claim
11 words
The conductor of claim 6 wherein said tensile strands comprise steel.
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |