US3688016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial cable
Assignee: Cooper Industries LLC
•
Filing: 1971-10-19
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Granted: 1972-08-29
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Expires: 1991-10-19
Abstract
Abstract A coaxial cable is described wherein a rigid expanded foam insulator fills the space between inner and outer conductors. Groove means are formed in the outer surface of the insulator to a depth sufficient to enable the insulator to flex with the inner and outer conductors.
Inventors
- 👤 Robert L Spade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:51
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1834; H01B11/1839
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
74 words
A coaxial cable comprising, at least one flexible inner conductor, at least one flexible outer conductor surrounding and coaxial with said inner conductor, and a rigid expanded foam insulator filling the space between said inner and outer conductors, said insulator having groove means formed in the outer surface thereof to a depth sufficient to enable said insulator to flex with said inner and outer conductors, said groove means extending the length of said insulator.
Claim 2
Dependent Claim
74 words
A coaxial cable comprising, at least one flexible inner conductor, at least one flexible outer conductor surrounding and coaxial with said inner conductor, and a rigid expanded foam insulator filling the space between said inner and outer conductors, said insulator having groove means formed in the outer surface thereof to a depth sufficient to enable said insulator to flex with said inner and outer conductors, said groove means extending the length of said insulator.
Claim 3
Dependent Claim
16 words
A coaxial cable according to claim 1 wherein said groove means comprise a single helical groove.
Claim 4
Dependent Claim
25 words
A coaxial cable according to claim 2 wherein the depth of said helical groove is over half the distance between said inner and outer conductors.
Claim 5
Dependent Claim
16 words
A coaxial cable according to claim 1 wherein the bottom of said groove means is rounded.
Claim 6
Dependent Claim
15 words
A coaxial cable according to claim 1 wherein said outer conductor comprises a flexible braid.
Claim 7
Dependent Claim
15 words
A coaxial cable according to claim 1 wherein said outer conductor comprises a flexible foil.
Claim 8
Dependent Claim
20 words
A coaxial cable according to claim 1 wherein said outer conductor is surrounded by an outer layer of flexible insulation.
Claim 9
Dependent Claim
27 words
A coaxial cable according to claim 1 wherein a plurality of drain wires are provided extending the length of the cable in contact with said outer conductor.
References Cited (Backward Citations)
US1050250A
Cited
US2140270A
Cited
GB734161A
Cited
FR1255743A
Cited
US3315025A
Cited
US3309458A
Cited
US3639674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |