Patent US3700900A successfully refreshed from Google Patents.
US3700900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual purpose transmission line
Assignee: Individual
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Filing: 1969-02-06
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Granted: 1972-10-24
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Expires: 1989-02-06
Abstract
Abstract A high-voltage power transmission line in the form of a hollow tubular conductor which serves as a conduit for a high-intensity light beam modulated with data having security requirements. The high voltage of the power line effectively precludes unauthorized access to the data carried by the light beam enclosed therewithin.
Inventors
- 👤 Arne J Herleikson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:20
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/54; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4417; H04B10/00; H04B10/25; H04B2203/00; H04B2203/54; H04B2203/5404; H04B2203/5416; H04B2203/5429; H04B2203/5458
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
158 words
In a system for according to a high-power transmission line the added capability of conveying confidential data between any two points therealong with assurance that the data so conveyed has not been or will not be compromised, the combination of: a high-power transmission line in the form of a hollow tubular conductor; a source of optical energy modulated with confidential data to be conveyed from a first point along said high-power transmission line to a second point along such line; means for injecting modulated optical energy from said source into said power transmission line at said first point, said optical energy being conveyed through said hollow tubular conductor to said second point; means at said second point for receiving and detecting the optical energy arriving at such point; the high power of said transmission line acting to preclude unauthorized access to the said optical energy as it is conveyed within said hollow tubular conductor between said two points.
Claim 2
Dependent Claim
158 words
In a system for according to a high-power transmission line the added capability of conveying confidential data between any two points therealong with assurance that the data so conveyed has not been or will not be compromised, the combination of: a high-power transmission line in the form of a hollow tubular conductor; a source of optical energy modulated with confidential data to be conveyed from a first point along said high-power transmission line to a second point along such line; means for injecting modulated optical energy from said source into said power transmission line at said first point, said optical energy being conveyed through said hollow tubular conductor to said second point; means at said second point for receiving and detecting the optical energy arriving at such point; the high power of said transmission line acting to preclude unauthorized access to the said optical energy as it is conveyed within said hollow tubular conductor between said two points.
Claim 3
Dependent Claim
16 words
A system according to claim 1 in which said hollow tubular conductor is filled with air.
Claim 4
Dependent Claim
20 words
A system according to claim 1 in which said hollow tubular conductor is filled with a gas other than air.
Claim 5
Dependent Claim
17 words
A system according to claim 1 in which said hollow tubular conductor encloses a fiber optics bundle.
Claim 6
Dependent Claim
22 words
A system according to claim 1 in which the inner surface of said hollow tubular conductor is highly reflective to optical energy.
Claim 7
Dependent Claim
24 words
A system according to claim 4 in which at least one light-amplifying unit is enclosed within saiD hollow tubular conductor between said two points.
Claim 8
Dependent Claim
81 words
A system according to claim 6 in which each light-amplifying unit includes means for detecting and demodulating the light arriving at such unit through said fiber optics bundle, means for amplifying the light so detected and demodulated, a source of high-intensity light, means for applying the output of said amplifying means to modulate the high-intensity light output of said source, and means for returning the modulated high-intensity light to said fiber optics bundle to continue its passage to said second point.
Claim 9
Dependent Claim
31 words
The combination of claim 7 in which the energy required to operate each said light amplifying unit is derived from the said high-power transmission line within which such unit is enclosed.
Claim 10
Dependent Claim
32 words
The combination of claim 8 in which the energy required to operate each said light-amplifying unit is derived from an IR drop developed between two spaced-apart connections to said high-power transmission line.
Claim 11
Dependent Claim
26 words
A system according to claim 6 in which said source of optical energy is a laser, and in which each light-amplifying unit comprises a laser amplifier.
References Cited (Backward Citations)
US3657543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |