US3668573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency cable
Assignee: KM Kabelmetal AG
•
Filing: 1971-02-03
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Granted: 1972-06-06
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Expires: 1991-02-03
Abstract
Abstract An h.f. cable with two conductors in a dielectric substance enveloped by a shield with an axial slot which is covered by a copper foil.
Inventors
- 👤 Helmut Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:30
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/20; H01Q13/203; H01P; H01P3/00; H01P3/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
47 words
A high frequency cable, as set forth in claim 1, wherein the slot is disposed axially symmetrical to the cores of the pair, for concentrating the field lines symmetrically to a plane through a center line between the cores and an axial center line through the slot.
Claim 2
Dependent Claim
19 words
A high frequency cable, as set forth in claim 1, the shield having a plurality of parallelly extending slots.
Claim 3
Dependent Claim
28 words
A high frequency cable, in accordance with claim 1, wherein the dielectric material is air, there being spacer and support means for supporting the shield on the cores.
Claim 4
Dependent Claim
38 words
A high frequency cable, as in claim 1, the dielectric material being a solid material serving as spacer for the two conductor cores as well as support for the shield in relation to the cores of the pair.
Claim 5
Dependent Claim
25 words
A high frequency cable as in claim 1, the slot being covered by a thin metal foil of low magnetic permeability and high electric conductivity.
Claim 6
Dependent Claim
12 words
A cable as in claim 6, the foil being made of copper.
References Cited (Backward Citations)
US2580155A
Cited
US3534303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |