US3233238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar camouflage arrangement
Assignee: Aerospace Corp
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Filing: 1962-06-05
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Granted: 1966-02-01
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 William C Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:53
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN COMBINATION WITH A SPACE CRAFT ARRANGED TO ELECTRONICALLY SIMULATE AN INFINITE CONDUCTING CONE WITH RESPECT TO FREQUENCIES OF ILLUMINATING RADAR WHICH MAY REASONABLY BE EXPECTED TO IMPINGE THEREON, AN ACCESS PORT CAMMOUFLAGE ARRANGEMENT, COMPRISING: A LOSSY WASHER SURROUNDING A PORT AND ARRANGED WITH AN OUTER RIM AND A CENTRAL APERTURE, AND HAVING A TAPERED PHYSICAL CONFIGURATION SUCH THAT THE RIM HAS A THICKNESS OF THE ORDER OF A FEW MICRONS AND THE APERTURE HAS A THICKNESS OF THE ORDER OF AT LEAST TWO WAVELENGTHS OF THE ILLUMINATING RADAR WITH THE THICKNESS GRADUATION IN THE REGION OF THE OUTER EDGE HAVING A RADIUS OF CURVATURE NO LESS THAN SAID TWO WAVELENGTHS; LOSSY MATTER PARTIALLY FILLING SAID WASHER WITH THE LOSS TANGENT OF THE LOSSY MATTER BEING LEAST AT THE RIM AND GREATEST AT THE INNER SURFACE NEAR THE APERTURE; A LOSSY PLUG ARRANGED TO SUBSTANTIALLY FILL THE APERTURE OF SAID WASHER AND SUBSTANTIALLY COVER A PORT DOOR WITH A UNIFORM THICKNESS OF NO LESS THAN SAID TWO WAVELENGTHS, AND FILLER MATTER IN SAID PLUG BEING OF INCREASED LOSS TANGENT ONLY FROM THE OUTER TO THE INNER SURFACE THEREOF.
Claim 2
Dependent Claim
188 words
IN COMBINATION WITH A SPACE CRAFT ARRANGED TO ELECTRONICALLY SIMULATE AN INFINITE CONDUCTING CONE WITH RESPECT TO FREQUENCIES OF ILLUMINATING RADAR WHICH MAY REASONABLY BE EXPECTED TO IMPINGE THEREON, AN ACCESS PORT CAMMOUFLAGE ARRANGEMENT, COMPRISING: A LOSSY WASHER SURROUNDING A PORT AND ARRANGED WITH AN OUTER RIM AND A CENTRAL APERTURE, AND HAVING A TAPERED PHYSICAL CONFIGURATION SUCH THAT THE RIM HAS A THICKNESS OF THE ORDER OF A FEW MICRONS AND THE APERTURE HAS A THICKNESS OF THE ORDER OF AT LEAST TWO WAVELENGTHS OF THE ILLUMINATING RADAR WITH THE THICKNESS GRADUATION IN THE REGION OF THE OUTER EDGE HAVING A RADIUS OF CURVATURE NO LESS THAN SAID TWO WAVELENGTHS; LOSSY MATTER PARTIALLY FILLING SAID WASHER WITH THE LOSS TANGENT OF THE LOSSY MATTER BEING LEAST AT THE RIM AND GREATEST AT THE INNER SURFACE NEAR THE APERTURE; A LOSSY PLUG ARRANGED TO SUBSTANTIALLY FILL THE APERTURE OF SAID WASHER AND SUBSTANTIALLY COVER A PORT DOOR WITH A UNIFORM THICKNESS OF NO LESS THAN SAID TWO WAVELENGTHS, AND FILLER MATTER IN SAID PLUG BEING OF INCREASED LOSS TANGENT ONLY FROM THE OUTER TO THE INNER SURFACE THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |