US4187391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency coaxial cable and method of producing same
Assignee: Kupferdraht-Isolierwerk AG Wildegg
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Filing: 1978-01-10
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Granted: 1980-02-05
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Expires: 1998-01-10
Abstract
Abstract A high frequency coaxial cable suitable for aerial and ultra-high-frequency lines of the type having a metal internal conductor, a plastic dielectric concentrically surrounding the internal conductor, an external conductor surrounding the dielectric and comprising a metal wire mesh and a plastic foil strip metallized on at least one side, and a plastic sheath enveloping the external conductor as an external protective cover, wherein the wires of the wire mesh are arranged in net-like configuration to define an open wire mesh enclosing the dielectric and the plastic foil strip is applied on the wire mesh in helical edgewise overlapping windings with its metallized side facing the wire mesh and is pressed into each single mesh opening of the wire mesh in form of a generally trough-like dent or dimple thereby short-circuiting each single mesh opening of the wire mesh. The plastic foil strip is preferably pressed into the wire mesh opening during the application of the plastic sheath by extruding the latter under high pressure.
Inventors
- 👤 Othmar Voser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:23
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1808; H01B11/1817; B; B01; B01J; B01J20/00; B01J20/22; B01J20/26; B01J20/264; B01J20/265; B01J20/267; B01J20/281; B01J20/282; B01J20/285; C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
A high frequency coaxial cable for aerial and ultra-high-frequency lines, comprising a metal internal conductor, a plastic dielectric concentrically surrounding the internal conductor, an external conductor surrounding the dielectric and comprising a metal wire mesh and a plastic foil strip metallised on at least one side, and a plastic sheath enveloping the external conductor as an external protective cover, the wires of said wire mesh being arranged in netlike configuration to define an open wire mesh deposited on the dielectric and said plastic foil strip being applied on the wire mesh in helical edgewise overlapping windings with said metallised side facing the wire mesh and being pressed into each single mesh of the wire mesh in the form of a generally trough-like dent thereby short-circuiting each single mesh of the wire mesh.
Claim 2
Dependent Claim
132 words
A high frequency coaxial cable for aerial and ultra-high-frequency lines, comprising a metal internal conductor, a plastic dielectric concentrically surrounding the internal conductor, an external conductor surrounding the dielectric and comprising a metal wire mesh and a plastic foil strip metallised on at least one side, and a plastic sheath enveloping the external conductor as an external protective cover, the wires of said wire mesh being arranged in netlike configuration to define an open wire mesh deposited on the dielectric and said plastic foil strip being applied on the wire mesh in helical edgewise overlapping windings with said metallised side facing the wire mesh and being pressed into each single mesh of the wire mesh in the form of a generally trough-like dent thereby short-circuiting each single mesh of the wire mesh.
Claim 3
Dependent Claim
33 words
A high frequency coaxial cable according to claim 1, wherein the internal wall of said plastic sheath is provided with generally knob-shaped projections fitting into said trough-like dents in said plastic foil strip.
Claim 4
Dependent Claim
40 words
A high frequency coaxial cable according to claim 1, wherein the metal wire mesh is formed of two groups, substantially equal in number, of uninsulated wires winding helically in opposite senses of rotation around the dielectric and in braided relation.
Claim 5
Dependent Claim
22 words
A high frequency coaxial cable according to claim 3, wherein the wires of said wire mesh are provided with a metal coating.
Claim 6
Dependent Claim
75 words
A high frequency coaxial cable according to claim 1, wherein the metal wire mesh is constructed of two equal groups of uninsulated wires, each group forming one of two superposed layers of wires, the wires of each group being evenly distributed around the periphery of the dielectric, the wires of the two groups running in opposite senses of rotation helically around the dielectric and being in electrical contact at their mutually facing points of intersection.
Claim 7
Dependent Claim
22 words
A high frequency coaxial cable according to claim 5, wherein the wires of said wire mesh are provided with a metal coating.
Claim 8
Dependent Claim
19 words
A high frequency coaxial cable according to claim 1, wherein the plastic foil strip is metallised on both sides.
Claim 9
Dependent Claim
40 words
A high frequency coaxial cable according to claim 7, wherein the metal coatings on both sides of the metallised foil strip are in electric contact with one another at the strip edges and/or at points distributed over their contiguous surfaces.
Claim 10
Dependent Claim
37 words
A high frequency coaxial cable according to claim 7, wherein the width of the overlapping area of the margins of the plastic foil strip is between 20% and 40% of the width of the plastic foil strip.
Claim 11
Dependent Claim
22 words
A high frequency coaxial cable according to claim 1, wherein the metal coating of the plastic foil strip is made of aluminum.
Claim 12
Dependent Claim
25 words
A high frequency coaxial cable according to claim 10, wherein the total thickness of metal coating on the plastic foil strip is at least 20μ.
Claim 13
Independent Claim
193 words
A method of producing a high frequency coaxial cable for aerial and ultra-high-frequency lines comprising the steps of applying around a metal internal conductor a plastic dielectric concentrically surrounding the internal conductor, applying around said plastic dielectric an external conductor comprising a metal wire mesh and a plastic foil strip metallised on at least one side, said metal wire mesh being applied in form of an open wire mesh by arranging the wires thereof in netlike configuration and said plastic foil strip being applied on said mesh by winding the plastic foil strip with its metallised side facing the wire mesh in the form of helical edgewise overlapped windings on the wire mesh, and applying on said windings of the metallised plastic foil strip a plastic sheath as an external protective cover by extrusion under pressure of sufficient magnitude as to press the metallised plastic foil into each single mesh of the netlike wire mesh in the form of a generally trough-like dent and to fill these trough-like dents with material of the plastic sheath thereby providing the internal surface of the plastic sheath with generally knob-shaped projections fitting into said trough-like dents.
Claim 14
Independent Claim
193 words
A method of producing a high frequency coaxial cable for aerial and ultra-high-frequency lines comprising the steps of applying around a metal internal conductor a plastic dielectric concentrically surrounding the internal conductor, applying around said plastic dielectric an external conductor comprising a metal wire mesh and a plastic foil strip metallised on at least one side, said metal wire mesh being applied in form of an open wire mesh by arranging the wires thereof in netlike configuration and said plastic foil strip being applied on said mesh by winding the plastic foil strip with its metallised side facing the wire mesh in the form of helical edgewise overlapped windings on the wire mesh, and applying on said windings of the metallised plastic foil strip a plastic sheath as an external protective cover by extrusion under pressure of sufficient magnitude as to press the metallised plastic foil into each single mesh of the netlike wire mesh in the form of a generally trough-like dent and to fill these trough-like dents with material of the plastic sheath thereby providing the internal surface of the plastic sheath with generally knob-shaped projections fitting into said trough-like dents.
Claim 15
Dependent Claim
47 words
The method according to claim 12, wherein the plastic sheath is applied on said windings of the metallised plastic foil strip at a temperature in the range of 50° C. to 200° C. and at a pressure of more than 5 atmospheres, preferably 10 to 50 atmospheres.
References Cited (Backward Citations)
US3051771A
Cited
US3240867A
Cited
US3484532A
Cited
US3474186A
Cited
US3927247A
Cited
US3643007A
Cited
US3594491A
Cited
DE2525149A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |