US4304462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal hardened fiber optic cables
Assignee: United States Department of the Army
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Filing: 1980-04-16
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Granted: 1981-12-08
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Expires: 2000-04-16
Abstract
Abstract Fiber optic cables suitable for use in nuclear radiation environments are disclosed which comprise a protective shield of low absorptance material which reflects thermal radiation. The shield is composed of layers of aluminum and Teflon.
Inventors
- 👤 Anthony J. Baba
- 👤 Stewart Share
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:44
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4429; G02B6/4436
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A fiber optic cable capable of withstanding a nuclear radiation environment comprising: at least one optical fiber; a strength layer adjacent to said optical fiber; a first thermal radiation reflecting layer, comprising aluminum foil, adjacent to said strength layer, to reflect incident thermal radiation from said nuclear radiation environment; and a second thermal reflecting layer, comprising a white fluoropolymer, adjacent to said first thermal reflecting layer, to reflect incident thermal radiation from said nuclear radiation environment.
Claim 2
Dependent Claim
76 words
A fiber optic cable capable of withstanding a nuclear radiation environment comprising: at least one optical fiber; a strength layer adjacent to said optical fiber; a first thermal radiation reflecting layer, comprising aluminum foil, adjacent to said strength layer, to reflect incident thermal radiation from said nuclear radiation environment; and a second thermal reflecting layer, comprising a white fluoropolymer, adjacent to said first thermal reflecting layer, to reflect incident thermal radiation from said nuclear radiation environment.
Claim 3
Dependent Claim
21 words
A fiber optic cable, as recited in claim 1, wherein said first thermal radiation reflecting layer comprises an aluminized plastic film.
Claim 4
Dependent Claim
29 words
A fiber optic cable, as recited in claim 1 or 2, further comprising a layer of a transparent fluoropolymer adjacent to said layer of said second thermal reflecting layer.
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) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |