US3725946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio antenna structure
Assignee: CAMUSAT GUEGUEN FRANCE
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Filing: 1971-04-27
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Granted: 1973-04-03
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Expires: 1991-04-27
Abstract
Abstract Radio antenna structure of large size enabling as easy erection on the site by assembly of separate panels. The structure comprises an assembly of curvilinear triangles whose projection defines a network of lines intersecting at 60*, several assemblies of these triangles constituting the base of pyramids constituted by bars transmitting forces rearwardly of the reflecting surface of the antenna. The apices of these pyramids are united in a plane by rigid bars so that the whole of the structure is completely triangulated and indeformable. The antenna provided with a radio source lends itself to an installation resisting wind and frost.
Inventors
- 👤 M Quequen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:57
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/16; H01Q15/161
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
In an antenna structure comprising: a concaVe surface of revolution made of a metal trellis supported on metal frame panels assembled in the form of curvilinear triangles placed edge to edge, six of said panels being mounted about the axis of the said surface and projected in the form of a regular hexagon on a plane at right angles to the said axis, the improvement in which three stress bars parallel to said axis connect three nonconsecutive apexes of the hexagon to an equilateral triangle forming a plane of reference at right angles to said axis, at the back of the said concave surface, the apexes of said equilateral reference triangle also being connected to the other apexes of said curvilinear triangles placed edge to edge, the whole forming a non-deformable assembly of pyramids.
Claim 2
Dependent Claim
134 words
In an antenna structure comprising: a concaVe surface of revolution made of a metal trellis supported on metal frame panels assembled in the form of curvilinear triangles placed edge to edge, six of said panels being mounted about the axis of the said surface and projected in the form of a regular hexagon on a plane at right angles to the said axis, the improvement in which three stress bars parallel to said axis connect three nonconsecutive apexes of the hexagon to an equilateral triangle forming a plane of reference at right angles to said axis, at the back of the said concave surface, the apexes of said equilateral reference triangle also being connected to the other apexes of said curvilinear triangles placed edge to edge, the whole forming a non-deformable assembly of pyramids.
Claim 3
Dependent Claim
64 words
A structure according to claim 1, in which the projection of the curvilinear triangles on said reference plane has in addition to the six triangles combined in said hexagon, six triangles symmetrical with the former in relation to the outline of said hexagon, and 12 triangles produced by the circle circumscribed in the first twelve triangles and the three diameters of said central hexagon.
Claim 4
Dependent Claim
27 words
A structure according to claim 2, in which the twelve equilateral triangles of said structure are reinforced by median subdivisions, dividing each triangle into four equal triangles.
Claim 5
Dependent Claim
24 words
A structure according to claim 3 in which said triangles resulting from the first subdivision are further split into four by a second sub-division.
Claim 6
Dependent Claim
28 words
A structure according to claim 2, in which the sides of the curvilinear triangles are bent metal sections, a metal trellis being welded to the assembly of sections.
Claim 7
Dependent Claim
48 words
A structure according to claim 2, in which the equilateral reference triangle has one apex pointing upwards and connected to a fixed mast by a joint and an adjustable threaded rod, while the two bottom apexes are respectively joined to a fixed support by joints and adjustable rods.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |