US3689923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilised aerial
Assignee: Alcatel Lucent SAS
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Filing: 1970-07-22
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Granted: 1972-09-05
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Expires: 1990-07-22
Abstract
Abstract A lightweight aerial mast for electromagnetic waves is provided with a planar reflector fixed to the top of the mast for reflecting waves onto a planar reflector near the ground, which in turn reflects the waves to a parabolic reflector at whose focus there is a horn aerial. The parallelism of the two planar reflectors is made independent from the bending of the mast due to a connection between these two reflectors provided by three parallel wires of equal lengths which are held taut.
Inventors
- 👤 Yves Tocquec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/18; G02B7/182; G02B7/183; H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/104; H01Q19/18; H01Q19/185
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
63 words
An aerial comprising a mast; a first reflector connected to said mast; a second reflector located adjacent the base of said mast; the first and second reflectors being substantially planar; tie means linking said first and second reflectors, and means for mounting said first and second reflectors so that angular displacements of one reflector are transmitted to the other by said tie means.
Claim 2
Dependent Claim
63 words
An aerial comprising a mast; a first reflector connected to said mast; a second reflector located adjacent the base of said mast; the first and second reflectors being substantially planar; tie means linking said first and second reflectors, and means for mounting said first and second reflectors so that angular displacements of one reflector are transmitted to the other by said tie means.
Claim 3
Dependent Claim
41 words
An aerial as claimed in claim 1, where said tie means comprises two ties and wherein said second reflector is mounted parallel to said first reflector and is rotatable about at least one axis inclined to the plane of said ties.
Claim 4
Dependent Claim
36 words
An aerial as claimed in claim 1, where said tie means comprises three parallel ties and wherein said second reflector is mounted so as to be rotatable about at least two axes perpendicular to said ties.
Claim 5
Dependent Claim
24 words
An aerial as claimed in claim 1 wherein said first reflector is rigidly attached to the mast at a distance above said second reflector.
Claim 6
Dependent Claim
26 words
An aerial as claimed in claim 4 further comprising a parabolic reflector and wherein said second reflector is situated opposite and co-operates with said paRabolic reflector.
Claim 7
Dependent Claim
16 words
An aerial as claimed in claim 5, wherein said parabolic reflector is attached to said mast.
Claim 8
Dependent Claim
17 words
An aerial as claimed in claim 1 wherein said second reflector is larger than said first reflector.
Claim 9
Dependent Claim
57 words
An aerial comprising a mast; a first reflector connected to said mast; a slightly concave second reflector located adjacent the base of said mast; tie means linking said first and second reflectors and means for mounting said first and second reflectors so that angular displacements of one reflector are transmitted to the other by said tie means.
Claim 10
Dependent Claim
57 words
An aerial comprising a mast; a first reflector connected to said mast; a slightly concave second reflector located adjacent the base of said mast; tie means linking said first and second reflectors and means for mounting said first and second reflectors so that angular displacements of one reflector are transmitted to the other by said tie means.
Claim 11
Dependent Claim
62 words
An aerial comprising a mast; a first reflector connected to said mast; a second reflector located adjacent the base of said mast; the first and second reflectors being elliptical; tie means linking said first and second reflectors, and means for mounting said first and second reflectors so that angular displacements of one reflector are transmitted to the other by said tie means.
Claim 12
Dependent Claim
62 words
An aerial comprising a mast; a first reflector connected to said mast; a second reflector located adjacent the base of said mast; the first and second reflectors being elliptical; tie means linking said first and second reflectors, and means for mounting said first and second reflectors so that angular displacements of one reflector are transmitted to the other by said tie means.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |