US3274602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna having variable beamwidth achieved by variation of source width
Assignee: North American Aviation Corp
•
Filing: 1963-09-16
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Granted: 1966-09-20
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Grant M Randall
- 👤 Jerry A Algeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:12
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02; H01Q25/00; H01Q25/002; H01Q3/00; H01Q3/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A HORN-TYPE MICROWAVE ANTENNA HAVING A MAIN WAVEGUIDE TERMINAL HORN PORTION, ONE OPEN END OF WHICH IS ADAPTED TO COOPERATE WITH AN ANTENNA DISH AND AN OPPOSITE END OF WHICH IS ADAPTED TO BE CONNECTED TO A FEEDHORN, VARIABLE APERTURE MEANS COMPRISING AN AUXILIARY TERMINAL HORN PORTION, ONE END OF WHICH IS OPEN AND ADAPTED TO COOPERATE WITH SAID ANTENNA DISH AND AN OPPOSITE END OF WHICH IS CLOSED, SAID AUXILIARY HORN PORTION HAVING ONE WALL THEREOF CONTIGUOUS WITH A WALL OF SAID MAIN HORN PORTION; COUPLING SLOT MEANS IN SAID CONTIGUOUS WALLS AND INTERCOUPLING SAID MAIN AND AUXILIARY TERMINAL HORN PORTIONS IN MICROWAVE CIRCUIT; AND SWITCHABLE SHORTCIRCUITING IMPEDANCE MEANS MOUNTED IN SAID COUPLING SLOT MEANS AND ORIENTED FOR SELECTIVELY DECOUPLING SAID INTERCOUPLED TERMINAL HORN PORTIONS.
Claim 2
Dependent Claim
127 words
IN A HORN-TYPE MICROWAVE ANTENNA HAVING A MAIN WAVEGUIDE TERMINAL HORN PORTION, ONE OPEN END OF WHICH IS ADAPTED TO COOPERATE WITH AN ANTENNA DISH AND AN OPPOSITE END OF WHICH IS ADAPTED TO BE CONNECTED TO A FEEDHORN, VARIABLE APERTURE MEANS COMPRISING AN AUXILIARY TERMINAL HORN PORTION, ONE END OF WHICH IS OPEN AND ADAPTED TO COOPERATE WITH SAID ANTENNA DISH AND AN OPPOSITE END OF WHICH IS CLOSED, SAID AUXILIARY HORN PORTION HAVING ONE WALL THEREOF CONTIGUOUS WITH A WALL OF SAID MAIN HORN PORTION; COUPLING SLOT MEANS IN SAID CONTIGUOUS WALLS AND INTERCOUPLING SAID MAIN AND AUXILIARY TERMINAL HORN PORTIONS IN MICROWAVE CIRCUIT; AND SWITCHABLE SHORTCIRCUITING IMPEDANCE MEANS MOUNTED IN SAID COUPLING SLOT MEANS AND ORIENTED FOR SELECTIVELY DECOUPLING SAID INTERCOUPLED TERMINAL HORN PORTIONS.
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |