US5121122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facade construction for high structures
Assignee: Airbus Defence and Space GmbH
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Filing: 1990-05-29
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Granted: 1992-06-09
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Expires: 2010-05-29
Abstract
Abstract In a facade construction of high-rise structures, a corresponding layer construction is provided for suppressing reflections of incident electromagnetic waves, particularly of radar waves. For this purpose, an electrical resistance layer which has a surface resistance in the range of 300 to 1200 Ω is arranged at a distance from a reflecting surface. The distance between the reflecting surface and the electrical resistance layer is approximately 1/4 of the wavelength in the propagation direction of incident electromagnetic waves to be suppressed.
Inventors
- 👤 Andreas Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:16
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0001; H05K9/0003; H01; H01Q; H01Q17/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
127 words
A facade construction for highrise structures, comprising: a surface (1) which reflects incident electromagnetic waves; a carrier (5) having slight wave transmission damping and being provided as a covering arranged at a distance from the reflecting surface so as to form a weather resistant facade outer side, the carrier being formed of one of a ceramic material, a laminate material and a fiber cement; and an electrical resistance layer (4), with a surface resistance in a range of 300 to 1200 Ω.sub.□, formed on or in said carrier (5) and arranged at a distance from the reflecting surface (1), the distance of the formed electrical resistance layer (4) from the reflecting surface (1) being approximately 1/4 of the wavelength of the electromagnetic waves in a wave-propagation direction.
Claim 2
Dependent Claim
127 words
A facade construction for highrise structures, comprising: a surface (1) which reflects incident electromagnetic waves; a carrier (5) having slight wave transmission damping and being provided as a covering arranged at a distance from the reflecting surface so as to form a weather resistant facade outer side, the carrier being formed of one of a ceramic material, a laminate material and a fiber cement; and an electrical resistance layer (4), with a surface resistance in a range of 300 to 1200 Ω.sub.□, formed on or in said carrier (5) and arranged at a distance from the reflecting surface (1), the distance of the formed electrical resistance layer (4) from the reflecting surface (1) being approximately 1/4 of the wavelength of the electromagnetic waves in a wave-propagation direction.
Claim 3
Dependent Claim
19 words
A facade construction according to claim 1, wherein the electromagnetic waves are in the frequency range of radar waves.
Claim 4
Dependent Claim
22 words
A facade construction according to claim 1, and further comprising a heat insulating layer arranged between the reflecting surface and the covering.
Claim 5
Dependent Claim
26 words
A facade construction according to claim 1, wherein the carrier (5) is formed by a laminate material of compressed cellulose surface impregnated with a synthetic resin.
Claim 6
Dependent Claim
18 words
A facade construction according to claim 1, wherein the resistance layer (4) is formed from an aluminized fabric.
Claim 7
Dependent Claim
22 words
A facade construction according to claim 1, wherein the resistance layer (4) is formed by means of a fabric with incorporated soot.
Claim 8
Dependent Claim
19 words
A facade construction according to claim 1, wherein the resistance layer (4) is a fabric of electrically conductive fibers.
Claim 9
Dependent Claim
35 words
A facade construction according to claim 1, wherein the resistance layer (4) is formed inside the carrier (5) by means of a formed film having at least one of electrically and magnetically conductive material particles.
Claim 10
Dependent Claim
28 words
A facade construction according to claim 1, wherein a spacing layer (3) is formed by a sandwich element between the reflecting surface (1) and the resistance layer (4).
Claim 11
Dependent Claim
58 words
A facade construction according to claim 1, wherein a spacing layer (3) of a plurality of partial elements (3', 3", 3"') is formed between the reflecting surface (1) and the resistance layer (4), and at least one of an additional resistance layer (4') and a highly reflective additional layer is arranged between the partial elements (3', 3", 3"')
Claim 12
Dependent Claim
20 words
A facade construction according to claim 1, wherein a metal foil (2) is additionally arranged on the reflecting surface (1).
Claim 13
Dependent Claim
20 words
A facade construction according to claim 1, wherein a close-meshed metal grate is additionally arranged on the reflecting surface (1).
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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) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |