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US4370023A
Expired / Lapsed
US
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Longitudinal water-tight light waveguide cable and the method of manufacture
Assignee: Siemens AG
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Filing: 1980-10-30
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Granted: 1983-01-25
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Expires: 2000-10-30
Abstract
Abstract The invention relates to a cable, particularly to a light waveguide cable, in which at least one conductor, particularly a fiber-shaped light waveguide, is arranged in the interior of a protective sheathing and the remaining inside space is filled out with a gel-like substance. The substance consists of a mixture comprising an oil and a thixotropic agent.
Inventors
- 👤 Gerhard Lange
- 👤 Helmut Saller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; G02B6/4401; G02B6/4415; G02B6/4427; Y; Y10; Y10S; Y10S516/00; Y10S516/903
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
78 words
In a light waveguide cable having at least one fiber-shaped light waveguide being arranged in an interior of a protective sheath and the remaining inside space of the sheath being filled with a gel-like substance, the improvement being said gel-like substance being a mixture of an oil, an organic thickener and a thixotropic agent, said thickener comprising polymers selected from a group consisting of halogenated hydrocarbon polymers, halogen-free hydrocarbon polymers and mixtures of halogenated and halogen-free hydrocarbon polymers.
Claim 2
Dependent Claim
78 words
In a light waveguide cable having at least one fiber-shaped light waveguide being arranged in an interior of a protective sheath and the remaining inside space of the sheath being filled with a gel-like substance, the improvement being said gel-like substance being a mixture of an oil, an organic thickener and a thixotropic agent, said thickener comprising polymers selected from a group consisting of halogenated hydrocarbon polymers, halogen-free hydrocarbon polymers and mixtures of halogenated and halogen-free hydrocarbon polymers.
Claim 3
Dependent Claim
33 words
In a light waveguide cable according to claim 1, wherein said oil is selected from a group consisting of aliphatic hydrocarbon oils, aromatic hydrocarbon oils and mixtures of aliphatic and aromatic hydrocarbon oils.
Claim 4
Dependent Claim
16 words
In a light waveguide cable according to claim 2, wherein said oil is a parafin oil.
Claim 5
Dependent Claim
17 words
In a light waveguide cable according to claim 1, wherein said oil consists of a silicone oil.
Claim 6
Dependent Claim
17 words
In a light waveguide cable according to claim 1, wherein said oil consists of a halogenated biphenyl.
Claim 7
Dependent Claim
16 words
In a light waveguide cable according to claim 5, wherein the biphenyl is a chlorinated biphenyl.
Claim 8
Dependent Claim
18 words
In a light waveguide cable according to claim 1, wherein the thixotropic agent comprises a colloidal silicic acid.
Claim 9
Dependent Claim
23 words
In a light waveguide cable according to claim 7, wherein the colloidal silicic acid has an additive of Al 2 O 3 .
Claim 10
Dependent Claim
23 words
In a light waveguide cable according to claim 7, wherein the colloidal silicic acid is 2 to 20 weight percent of the mixture.
Claim 11
Dependent Claim
15 words
In a light waveguide cable according to claim 1, wherein the thixotropic agent comprises carbon.
Claim 12
Dependent Claim
21 words
In a light waveguide cable according to claim 10, wherein the carbon is 2 through 40 weight percent of the mixture.
Claim 13
Dependent Claim
16 words
In a light waveguide cable according to claim 1, wherein thixotropic agent comprises a modified Montmorillonite.
Claim 14
Dependent Claim
23 words
In a light waveguide cable according to claim 12, wherein the modified Montmorillonite is between 0.2 through 10 weight percent of the mixture.
Claim 15
Dependent Claim
21 words
In a light waveguide cable according to claim 1, wherein said polymer is 0 through 50 weight percent of the mixture.
Claim 16
Dependent Claim
35 words
In a light waveguide cable according to claim 1, wherein the thickener comprises a wax selected from a group consisting of halogenated hydrocarbon waxes, halogen-free hydrocarbon waxes, and mixtures of halogenated and halogen-free hydrocarbon waxes.
Claim 17
Dependent Claim
22 words
In a light waveguide cable according to claim 15, wherein the hydrocarbon waxes are 0 through 20 weight percent of the mixture.
Claim 18
Dependent Claim
26 words
In a light waveguide cable according to claim 1, wherein said mixture includes an antioxidant in the magnitude of approximately 0.1 weight percent of the mixture.
Claim 19
Dependent Claim
16 words
In a light waveguide cable according to claim 1, wherein the mixture contains an inorganic filler.
Claim 20
Dependent Claim
22 words
In a light waveguide cable according to claim 18, wherein the filler amounts to up to 10 weight percent of the mixture.
Claim 21
Dependent Claim
18 words
In a light waveguide cable according to claim 1, wherein said mixture additionally contains a dye for identification.
Claim 22
Dependent Claim
54 words
In a light waveguide cable according to claim 1, wherein said mixture consists of approximately 72 weight percent of an oil selected from a group consisting of aromatic and aliphatic hydrocarbon oils, of approximately 3 percent of colloidal silicic acid, and of approximately 25 weight percent of a thickener, said thickeners being hydrocarbon polymers.
Claim 23
Dependent Claim
31 words
In a light waveguide cable according to claim 1, wherein said mixture consists of approximately 96 weight percent of silicone oil and of approximately 4 weight percent of colloidal silicic acid.
Claim 24
Dependent Claim
44 words
In a light waveguide cable according to claim 1, wherein said mixture consists of approximately 90 weight percent of halogenated biphenyl, of approximately 6 weight percent of colloidal silicic acid, and of approximately 4 weight percent of a thickener, said thickener being hydrocarbon waxes.
Claim 25
Dependent Claim
55 words
In a light waveguide cable according to claim 1, wherein the mixture consists of approximately 78 weight percent of an oil selected from a group consisting of aromatic and aliphatic hydrocarbon oils, of approximately 2 weight percent of colloidal silicic acid, and of approximately 20 weight percent of a thickener, said thickeners being hydrocarbon polymers.
Claim 26
Dependent Claim
40 words
In a light waveguide cable according to claim 1, wherein the mixture consists of approximately 80 weight percent of silicone oil, of approximately 10 weight percent of colloidal silicic acid, and of approximately 10 weight percent of an inorganic filler.
Claim 27
Dependent Claim
55 words
In a light waveguide cable according to claim 1, wherein said mixture consists of about 70 weight percent of halogenated biphenyl, of approximately 10 weight percent of colloidal silicic acid, of approximately 5 weight percent of montmorillonite, of approximately 5 weight percent of hydrocarbon waxes, and of approximately 10 weight percent of an inorganic filler.
Claim 28
Dependent Claim
23 words
In a light waveguide cable according to claim 1 wherein said oil with a viscosity of a range of 5 to 10,000 mPa.s.
Claim 29
Dependent Claim
23 words
In a light waveguide cable according to claim 27, wherein said oil has a viscosity of a range of 200 to 400 mPa.s.
Claim 30
Dependent Claim
27 words
In a light waveguide cable according to claim 1, wherein the oil is a halogenated biphenyl with a viscosity in a range of 1 to 20 mPa.s.
Claim 31
Dependent Claim
88 words
In a light waveguide cable according to claim 1, wherein each fiber-shaped light waveguide is arranged in a tubular sheath with a filling material and said tubular sheaths are arranged in an outer sheath with a filling material, the filling material between the fiber and tubular sheath has the oil being between 50 and 98 weight percent of the mixture and the substance for the filling material between the tubular sheaths and the outer sheath has the oil being between 30 and 98 weight percent of the mixture.
Claim 32
Dependent Claim
102 words
In a method of manufacturing a light waveguide cable having at least one fiber-shaped light waveguide being arranged in an interior of a protective sheath and the remaining inside space of the sheath being filled with a gel-like substance comprising a mixture of an oil and a thixotropic agent, said method comprising extruding the protective sheath on the waveguide, the improvement comprising creating a mixture of an oil, an organic thickener and a thixotropic agent, and injecting the mixture under pressure through a hollow needle in to the sheath during the step of extruding so that the mixture solidifies after said injection.
Claim 33
Dependent Claim
102 words
In a method of manufacturing a light waveguide cable having at least one fiber-shaped light waveguide being arranged in an interior of a protective sheath and the remaining inside space of the sheath being filled with a gel-like substance comprising a mixture of an oil and a thixotropic agent, said method comprising extruding the protective sheath on the waveguide, the improvement comprising creating a mixture of an oil, an organic thickener and a thixotropic agent, and injecting the mixture under pressure through a hollow needle in to the sheath during the step of extruding so that the mixture solidifies after said injection.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |