US5189718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite cable containing light waveguides and electrical conductors
Assignee: Corning Research and Development Corp
•
Filing: 1991-04-02
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Granted: 1993-02-23
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Expires: 2011-04-02
Abstract
Abstract Disclosed is a cable in which one tube holding light waveguides is connected by a plastic web to another tube holding metallic current carrying conductors. When buried in the earth, the cable may be located by means of a magnetic field produced by the current carrying conductors, but the cable retains the advantage of the tube carrying the light waveguides being dielectric.
Inventors
- 👤 Michael J. Barrett
- 👤 Andrew S. Dodd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:11
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/005; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4417; G02B6/4429; G02B6/443; G02B6/4432
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A cable containing light waveguides and electrical conductors, comprising: (a) a first tube containing a plurality of current carrying electrical conductors; (b) a second tube containing at least one strength member and a plurality of light waveguides; and, (c) a web extending between the first and second tubes, said web having a thickness narrower than half the outer diameter of the first tube or the second tube.
Claim 2
Dependent Claim
67 words
A cable containing light waveguides and electrical conductors, comprising: (a) a first tube containing a plurality of current carrying electrical conductors; (b) a second tube containing at least one strength member and a plurality of light waveguides; and, (c) a web extending between the first and second tubes, said web having a thickness narrower than half the outer diameter of the first tube or the second tube.
Claim 3
Dependent Claim
16 words
A cable as recited in claim 1, wherein the second tube and its contents are dielectric.
Claim 4
Dependent Claim
75 words
A cable containing light waveguides and electrical conductors, comprising: (a) a first tube containing a plurality of current carrying electrical conductors and a tubular metallic shield disposed between the electrical conductors and the first tube; (b) a second tube containing a plurality of light waveguides; and, (c) a web extending between the first and second tubes, said web having a thickness narrower than half the outer diameter of the first tube or the second tube.
Claim 5
Dependent Claim
75 words
A cable containing light waveguides and electrical conductors, comprising: (a) a first tube containing a plurality of current carrying electrical conductors and a tubular metallic shield disposed between the electrical conductors and the first tube; (b) a second tube containing a plurality of light waveguides; and, (c) a web extending between the first and second tubes, said web having a thickness narrower than half the outer diameter of the first tube or the second tube.
Claim 6
Dependent Claim
16 words
A cable as recited in claim 3, wherein the second tube and its contents are dielectric.
Claim 7
Dependent Claim
81 words
A cable containing light waveguides and electrical conductors, comprising: (a) a first tube containing a plurality of current carrying electrical conductors and a tubular metallic shield disposed between the electrical conductors and the first tube; (b) a second tube containing at least one strength member and a plurality of light waveguides; and, (c) a web extending between the first and second tubes, said web having a thickness narrower than half the outer diameter of the first tube or the second tube.
Claim 8
Dependent Claim
81 words
A cable containing light waveguides and electrical conductors, comprising: (a) a first tube containing a plurality of current carrying electrical conductors and a tubular metallic shield disposed between the electrical conductors and the first tube; (b) a second tube containing at least one strength member and a plurality of light waveguides; and, (c) a web extending between the first and second tubes, said web having a thickness narrower than half the outer diameter of the first tube or the second tube.
Claim 9
Dependent Claim
16 words
A cable as recited in claim 5, wherein the second tube and its contents are dielectric.
References Cited (Backward Citations)
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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) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |