US5084705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facade construction in high rise structures
Assignee: Airbus Defence and Space GmbH
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Filing: 1990-01-16
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Granted: 1992-01-28
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Expires: 2010-01-16
Abstract
Abstract Flat panel elements are placed ahead of structural parts reflecting electromagnetic waves, in the region of radar waves, in order to provide an absorption or reduction of the reflection. For this purpose electrically and/or magnetically conducting materials are embedded into an insulating material in order to form areas of conductivity. The dimensions of these areas of conductivity in all planes are at least 1000 times smaller than the wavelength of the waves to be absorbed, and the electrically and/or magnetically conducting materials amount up to 40% of the weight of the panel area elements.
Inventors
- 👤 Andreas Frye
- 👤 Jurgen Kruse
- 👤 Julius Weyand
- 👤 Joachim Bettermann
- 👤 Dirk Bringmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/004
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A facade buildup in high rise structures, in thin layer structuring, comprising: flat panel elements forming outer regions of the buildup; and a coating formed of a material which absorbs electromagnetic waves fastened in the outer regions ahead of structural parts reflecting electromagnetic waves, the coating being made of an insulator, into which at least one of electrically conducting and magnetic materials are embedded so as to form regions of conductivity, these regions having dimensions in all planes at least 1,000 times smaller than the wavelength of magnetic waves to be absorbed, and the electrically conducting and magnetic materials constituting up to 40% of the coating, the surfaces reflecting the electromagnetic waves being structured so that a subtraction of oscillation shares is achievable due to different travel times of reflected electromagnetic wave shares.
Claim 2
Dependent Claim
133 words
A facade buildup in high rise structures, in thin layer structuring, comprising: flat panel elements forming outer regions of the buildup; and a coating formed of a material which absorbs electromagnetic waves fastened in the outer regions ahead of structural parts reflecting electromagnetic waves, the coating being made of an insulator, into which at least one of electrically conducting and magnetic materials are embedded so as to form regions of conductivity, these regions having dimensions in all planes at least 1,000 times smaller than the wavelength of magnetic waves to be absorbed, and the electrically conducting and magnetic materials constituting up to 40% of the coating, the surfaces reflecting the electromagnetic waves being structured so that a subtraction of oscillation shares is achievable due to different travel times of reflected electromagnetic wave shares.
Claim 3
Dependent Claim
31 words
A facade buildup according to claim 1, wherein the flat panel elements are formed of a plastic material as an insulator with soot particles embedded therein as an electrically conducting material.
Claim 4
Dependent Claim
14 words
Facade buildup according to claim 1, wherein the magnetic material is iron carbonyl powder.
Claim 5
Dependent Claim
18 words
A facade buildup according to claim 1, wherein surfaces reflecting the electromagnetic waves have a structure with depth.
Claim 6
Dependent Claim
12 words
A facade buildup according to claim 4, wherein the surfaces are grooved.
Claim 7
Dependent Claim
31 words
A facade buildup according to claim 1, wherein the coating is formed of several layers and the at least one of electrically conducting and magnetic materials comprise differing shares by weight.
Claim 8
Dependent Claim
42 words
A facade buildup according to claim 1, and further comprising a metallic screen as an antenna for reflection is placed ahead of the coating and a subtraction of oscillation shares is accomplishable due to differing travel times of the reflected wave shares.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |