US3176301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural horns at focus of parabolic reflector with shields to reduce spillover and side lobes
Assignee: Individual
•
Filing: 1963-02-14
•
Granted: 1965-03-30
•
Expires: 1983-02-14
Abstract
No abstract record available.
Inventors
- 👤 Richard S Wellons
- 👤 Carey A Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:28
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A SHIELDING ARRANGEMENT FOR MINIMIZING THE SPILLOVER LOBES OF AN ANTENNA SYSTEM HAVING A GENERALLY PARABOLIC REFLECTOR AND A PLURALITY OF FEED HORNS DISPOSED IN THE FOCAL PLANE OF SAID REFLECTOR WHICH COMPRISES: (A) A METALLIC SHIELD COEXTENSIVE WITH THE EDGE OF SAID REFLECTOR AND EXTENDING THEREFROM IN THE DIRECTION OF THE AXIS OF SAID REFLECTOR TOWARD SAID FOCAL PLANE, (B) A SECOND CYLINDRICAL SHIELD COAXIAL WITH SAID AXIS EXTENDING FROM SAID FOCAL PLANE TOWARD SAID REFELCTOR AND ENCLOSING SAID FEED HORNS, (C) SAID SECOND SHIELD HAVING A DIAMETER AND LENGTH PROPORTIONED SO AS TO PERMIT ILLUMINATION OF THE ENTIRE REFLECTOR SURFACE BY SAID HORNS.
Claim 2
Dependent Claim
105 words
A SHIELDING ARRANGEMENT FOR MINIMIZING THE SPILLOVER LOBES OF AN ANTENNA SYSTEM HAVING A GENERALLY PARABOLIC REFLECTOR AND A PLURALITY OF FEED HORNS DISPOSED IN THE FOCAL PLANE OF SAID REFLECTOR WHICH COMPRISES: (A) A METALLIC SHIELD COEXTENSIVE WITH THE EDGE OF SAID REFLECTOR AND EXTENDING THEREFROM IN THE DIRECTION OF THE AXIS OF SAID REFLECTOR TOWARD SAID FOCAL PLANE, (B) A SECOND CYLINDRICAL SHIELD COAXIAL WITH SAID AXIS EXTENDING FROM SAID FOCAL PLANE TOWARD SAID REFELCTOR AND ENCLOSING SAID FEED HORNS, (C) SAID SECOND SHIELD HAVING A DIAMETER AND LENGTH PROPORTIONED SO AS TO PERMIT ILLUMINATION OF THE ENTIRE REFLECTOR SURFACE BY SAID HORNS.
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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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |