Patent US4765711A successfully refreshed from Google Patents.
US4765711A
Expired / Lapsed
US
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Underwater fiber optic cable weighted with metal particles
Assignee: Corning Research and Development Corp
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Filing: 1983-09-16
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Granted: 1988-08-23
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Expires: 2003-09-16
Abstract
Abstract A fiber optic cable adapted for underwater duty comprising a core of optical fibers circumferentially surrounded by jacket, the jacket being composed of metal particles suspended or embedded in a plastic.
Inventors
- 👤 Donald L. Obst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:45
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4427
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
44 words
A fiber optic cable comprising: (a) a core comprising a strength member and a plurality of optical fibers; (b) a jacket circumscribing and spaced apart from said core defining a volume; and, (c) said volume occupied by a mixture of metal particles and plastic.
Claim 2
Dependent Claim
44 words
A fiber optic cable comprising: (a) a core comprising a strength member and a plurality of optical fibers; (b) a jacket circumscribing and spaced apart from said core defining a volume; and, (c) said volume occupied by a mixture of metal particles and plastic.
Claim 3
Dependent Claim
31 words
The fiber optic cable of claim 1 wherein said jacket is composed of a material selected from the group consisting essentially of rubber, polyamide, polyurethane, polyvinyl chloride, polyolefin, and mixtures thereof.
Claim 4
Dependent Claim
30 words
The fiber optic cable of claim 1 wherein said metal particles are either ferrous or nonferrous metals or mixtures thereof and at least some of which are spherical in shape.
Claim 5
Dependent Claim
23 words
The fiber optic cable of claim 1 wherein said metal particles are steel and have a particle size between 0.02 and 0.04 inches.
Claim 6
Dependent Claim
18 words
The fiber optic cable of claim 1 wherein the metal particles occupy 25% to 75% of the volume.
Claim 7
Dependent Claim
20 words
The fiber optic cable of claim 1 wherein the plastic occupying volume is between 25% and 75% of the volume.
Claim 8
Dependent Claim
30 words
The fiber optic cable of claim 1 wherein the plastic occupying the volume is selected from the group consisting essentially of rubber, polyolefin, polyvinyl chloride, polyamide, polyurethane, and mixtures thereof.
Claim 9
Dependent Claim
29 words
The fiber optic cable of claim 1 wherein the particle size of said metal particles is such that it will pass a screen having screen openings of 0.0394 inches.
Claim 10
Dependent Claim
26 words
The fiber optic cable of claim 1 wherein said strength member is made from materials selected from the group comprising steel, iron, polyamide, aramide and graphite.
References Cited (Backward Citations)
US2035088A
Cited
US3166688A
Cited
US3813477A
Cited
US4176240A
Cited
DE2924495A1
Cited
US4312383A
Cited
US4324453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |