US4847448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial cable
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1988-05-04
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Granted: 1989-07-11
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Expires: 2008-05-04
Abstract
Abstract A coaxial cable having a tape with a metal deposited thereon which is wound over a laterally wound shielding layer which is, in turn, formed over an insulation layer about the conductor. The tape includes a plastic tape and a metal layer deposited on the plastic tape, and the tape is disposed such that the metal layer is in contact with the laterally wound shielding layer. Improved high frequency shielding characteristics are obtained using this structure without sacrificing cable flexibility.
Inventors
- 👤 Kazuhiro Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1808; H01B11/1821; H01B11/1817
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A coaxial cable having a central conductor, comprising: an insulation layer wound around said conductor; a laterally wound shielding layer formed of a plurality of wires wound at a predetermined pitch around said insulation layer; and a metal tape wound over said shielding layer, said tape including a plastic tape and a metal layer which is deposited on said plastic tape, said metal layer being in contact with said shielding layer.
Claim 2
Dependent Claim
71 words
A coaxial cable having a central conductor, comprising: an insulation layer wound around said conductor; a laterally wound shielding layer formed of a plurality of wires wound at a predetermined pitch around said insulation layer; and a metal tape wound over said shielding layer, said tape including a plastic tape and a metal layer which is deposited on said plastic tape, said metal layer being in contact with said shielding layer.
Claim 3
Dependent Claim
20 words
A coaxial cable as claimed in claim 1, wherein said metal layer has a thickness of at least 0.2 μm.
Claim 4
Dependent Claim
19 words
A coaxial cable as claimed in claim 1, wherein said metal layer has a thickness of approximately 1 μm.
Claim 5
Dependent Claim
22 words
A coaxial cable as claimed in claim 1, wherein said metal layer is formed of at least one of copper and tin.
Claim 6
Dependent Claim
103 words
A composite coaxial cable comprising: a plurality of coaxial cables having a central conductor, said coaxial cables being spirally wound about each other, each of said coaxial cables comprising an insulation layer wound around said concductor, a laterally wound shielding layer formed of a plurality of wires wound at a predetermined pitch around said insulation layer, and a tape wound over said shielding layer, said tape including a plastic tape and a metal layer which is deposited on said plastic tape, said metal layer being in contact with said shielding layer; and an outer cover layer formed over said spirally wound coaxial cables.
Claim 7
Dependent Claim
103 words
A composite coaxial cable comprising: a plurality of coaxial cables having a central conductor, said coaxial cables being spirally wound about each other, each of said coaxial cables comprising an insulation layer wound around said concductor, a laterally wound shielding layer formed of a plurality of wires wound at a predetermined pitch around said insulation layer, and a tape wound over said shielding layer, said tape including a plastic tape and a metal layer which is deposited on said plastic tape, said metal layer being in contact with said shielding layer; and an outer cover layer formed over said spirally wound coaxial cables.
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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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |