EP0089226A2
Expired / Lapsed
EP
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Coaxial cables
Assignee: Champlain Cable Corp
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Filing: 1983-03-15
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Granted: —
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Expires: 2003-03-15
Abstract
Abstract A dielectric system for coaxial electncal conductors is provided. The dielectric system separates an inner and outer conductor and is composed of a first layer of braided high tensile strength polymeric fluorocarbon filaments in an open weave surrounding the inner conductor. Surrounding the layer of braided filaments is a continuous layer of a polymeric film which is in turn surrounded by a continuous layer of a crosslinkable polymeric lacquer enclosing both the layer of braided filaments and the layer of polymeric film.
Inventors
- 👤 Richard Elliott Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 08:21
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1834
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
An insulated coaxial cable including a dielectric structure characterized by: (a) a first layer of braided high tensile strength polymeric fluorocarbon filaments surrounding said inner conductor in an open weave along the length of the inner conductor, said filaments haying a tensile strength of at least 40,000 psi (2812.198 kg/cm 2 ) and a dielectric constant of less than 2.8; (b) a second layer consisting of a polymeric film surrounding circumferentially the first layer and providing a continuous skin enclosing the first layer: and (c) a third layer consisting of a crosslinked polymeric lacquer surrounding circumferentially the second layer and providing a continuous skin enclosing the second layer.
Claim 2
Dependent Claim
108 words
An insulated coaxial cable including a dielectric structure characterized by: (a) a first layer of braided high tensile strength polymeric fluorocarbon filaments surrounding said inner conductor in an open weave along the length of the inner conductor, said filaments haying a tensile strength of at least 40,000 psi (2812.198 kg/cm 2 ) and a dielectric constant of less than 2.8; (b) a second layer consisting of a polymeric film surrounding circumferentially the first layer and providing a continuous skin enclosing the first layer: and (c) a third layer consisting of a crosslinked polymeric lacquer surrounding circumferentially the second layer and providing a continuous skin enclosing the second layer.
Claim 3
Dependent Claim
48 words
A coaxial cable of claim 1 in which the second layer of polymeric film of the dielectric system is a polymeric film which remains stable at temperatures of up to 150°C., said polymeric film being applied in the form of a tape heli.cally wrapped about said first layer.
Claim 4
Dependent Claim
18 words
A coaxial cable of claim 2 in which the second layer of polymeric film is polyparabanic acid film.
Claim 5
Dependent Claim
18 words
A coaxial cable of claim 2 in which the second layer of polymeric film is a polyimide film.
Claim 6
Dependent Claim
18 words
A coaxial cable of claim 2 in which the second layer of polymeric film is a polyester film.
Claim 7
Dependent Claim
18 words
A coaxial cable of claim 3 in which the third layer is a crosslinked polymer of methyl methacrylate.
Claim 8
Dependent Claim
18 words
A coaxial cable of claim 4 in which the third layer is a crosslinked polymer of methyl methacrylate.
Claim 9
Dependent Claim
18 words
A coaxial cable of claim 5 in which the third layer is a crosslinked polymer of methyl methacrylate.
Claim 10
Dependent Claim
33 words
A coaxial cable of any of claims 1 - 7 in which the polymeric fluorocarbon filaments have a tensile strength of at least 45,000 to 55,000 p.s.i. (3163.72 - 3866.77 kg/cm 2 ).
Claim 11
Independent Claim
135 words
A method of making a coaxial cable having improved strength properties over a wide temperature range, comprising: (a) covering a metallic conductor circumferentially with a first layer of braided high tensile strength polymeric fluorocarbon filaments in an open weave along the length of the conductor, said filaments having a tensile strength of at least 40,000 psi and a dielectric constant of less than 2.8; (b) covering the first layer circumferentially with a second layer of a polymeric film thereby providing a continuous skin enclosing the first layer; (c) covering the second layer circumferentially with a third layer consisting of a crosslinked polymeric lacquer thereby providing a continuous skin enclos-- ing the second layer; (d) covering the third layer circumferentially with an outer conductor; and (e) covering the outer conductor circumferentially with an outer protective layer.
Claim 12
Independent Claim
135 words
A method of making a coaxial cable having improved strength properties over a wide temperature range, comprising: (a) covering a metallic conductor circumferentially with a first layer of braided high tensile strength polymeric fluorocarbon filaments in an open weave along the length of the conductor, said filaments having a tensile strength of at least 40,000 psi and a dielectric constant of less than 2.8; (b) covering the first layer circumferentially with a second layer of a polymeric film thereby providing a continuous skin enclosing the first layer; (c) covering the second layer circumferentially with a third layer consisting of a crosslinked polymeric lacquer thereby providing a continuous skin enclos-- ing the second layer; (d) covering the third layer circumferentially with an outer conductor; and (e) covering the outer conductor circumferentially with an outer protective layer.
References Cited (Backward Citations)
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