Patent US4038040A successfully refreshed from Google Patents.
US4038040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible lattice-like grid structure etched from a metallic foil
Assignee: Airbus Defence and Space GmbH
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Filing: 1975-10-02
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Granted: 1977-07-26
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Expires: 1995-10-02
Abstract
Abstract A flexible fine lattice-like grid structure is formed by etching a metal foil printed with a pattern of intersecting webs crossing at junction points. The sections of the webs extending between the junction points have a length greater than the shortest between the junction points. The web sections between junction points can be curvilinear or made up of a plurality of angularly disposed rectilinear sub-sections. The shape and length of web sections can be varied to achieve different expansion limits in different directions.
Inventors
- 👤 Werner Nagl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:09
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/141; H01Q1/00; H01Q1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12361
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
In a flexible metallic fine grid structure for antenna reflectors with a double curved surface with the grid structure comprising a plurality of web sections interconnected at junction points, said web sections being curved in the plane of the grid and the junction points of said web sections forming the corners of equilateral triangles, wherein the improvement comprises that said web sections being etched from a metal foil, said web sections connecting the junction points having a sinusoidal configuration for the extent of the web sections between junction points, and the ends of at least five web sections forming a junction point.
Claim 2
Dependent Claim
102 words
In a flexible metallic fine grid structure for antenna reflectors with a double curved surface with the grid structure comprising a plurality of web sections interconnected at junction points, said web sections being curved in the plane of the grid and the junction points of said web sections forming the corners of equilateral triangles, wherein the improvement comprises that said web sections being etched from a metal foil, said web sections connecting the junction points having a sinusoidal configuration for the extent of the web sections between junction points, and the ends of at least five web sections forming a junction point.
Claim 3
Dependent Claim
92 words
In a flexible metallic fine grid structure for antenna reflectors with a double curved surface with the grid structure comprising a plurality of web sections interconnected at junction points, said web sections being curved in the plane of the grid and the junction points of said web sections forming the corners of equisided, multi-sided closed sections, wherein the improvement comprises that said web sections being etched from a metal foil, said web sections connecting the junction points have a sinusoidal configuration over the extent of the web sections between the junction points.
Claim 4
Dependent Claim
92 words
In a flexible metallic fine grid structure for antenna reflectors with a double curved surface with the grid structure comprising a plurality of web sections interconnected at junction points, said web sections being curved in the plane of the grid and the junction points of said web sections forming the corners of equisided, multi-sided closed sections, wherein the improvement comprises that said web sections being etched from a metal foil, said web sections connecting the junction points have a sinusoidal configuration over the extent of the web sections between the junction points.
Claim 5
Dependent Claim
20 words
Flexible metallic fine grid structure, as set forth in claim 2, wherein said multi-sided closed section is rectangular in shape.
Claim 6
Dependent Claim
23 words
Flexible metallic fine grid structure, as set forth in claim 1, wherein the metal foil forming the grid structure is a spring-elastic metal.
Claim 7
Dependent Claim
24 words
Flexible metallic fine grid structure, as set forth in claim 1, wherein the metal foil forming the grid structure is a plastically deformable metal.
Claim 8
Dependent Claim
32 words
Flexible metallic fine grid structure, as set forth in claim 1, wherein weldments are deposited at the peripheral junction points of contiguous grid structure sections for connecting said grid structure sections together.
References Cited (Backward Citations)
US2902305A
Cited
GB810249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |