Patent US4064454A successfully refreshed from Google Patents.
Patent US3568192A successfully refreshed from Google Patents.
US3568192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial satellites
Assignee: TECHNOLOGY UK
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Filing: 1966-10-24
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Granted: 1971-03-02
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Expires: 1986-10-24
Abstract
Abstract A very light, easily dispensed, efficient and durable passive radial communication satellite comprising a filamentary netlike structure of which alternate lengths of the filaments are metal coated to comprise dipoles, and in which those surfaces of the net filaments between the metal covered dipole regions are covered with a layer of metal which affords protection against damage to the net by long-wavelength ultraviolet radiation and reduces the rate of evaporation of the net material, said layer of metal being of small thickness compared to that forming the dipoles so that radio wave reflection therefrom is negligible.
Inventors
- 👤 Thomas William Grant Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:49
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/288; H01Q15/0006; H01Q15/0013
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
A passive radio communication satellite comprising a filamentary netlike structure of which alternate lengths of the filaments are metal coated to comprise dipoles, and in which those surfaces of the net filaments between the metal covered dipole regions are covered with a layer of metal which affords protection against damage to the net by long-wavelength ultraviolet radiation and reduces the rate of evaporation of the net material, said layer of metal being of small thickness compared to that forming the dipoles so that radio wave reflection therefrom is negligible.
Claim 2
Dependent Claim
89 words
A passive radio communication satellite comprising a filamentary netlike structure of which alternate lengths of the filaments are metal coated to comprise dipoles, and in which those surfaces of the net filaments between the metal covered dipole regions are covered with a layer of metal which affords protection against damage to the net by long-wavelength ultraviolet radiation and reduces the rate of evaporation of the net material, said layer of metal being of small thickness compared to that forming the dipoles so that radio wave reflection therefrom is negligible.
Claim 3
Dependent Claim
58 words
A passive radio communication satellite as claimed in claim 1 in which the net structure comprises a low-density filamentary structure of material selected from the group consisting of polyamide, polyester and glass fibre on which the dipoles are formed by coating alternate lengths of filaments with a layer of metal of sufficient thickness to act as a dipole.
Claim 4
Dependent Claim
35 words
A passive radio communication satellite as claimed in claim 1 in which the dipoles are equispaced over the netlike structure and in total cover between 0.3 and 0.6 of the surface are of the structure.
Claim 5
Dependent Claim
58 words
A passive radio communication satellite as claimed in claim 3 in which the net structure comprises a low-density filamentary structure of material selected from the group consisting of polyamide, polyester and glass fibre on which the dipoles are formed by coating alternate lengths of filaments with a layer of metal of sufficient thickness to act as a dipole.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |