US3072905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsymmetrical antenna feed for conical scanning antenna
Assignee: Individual
•
Filing: 1953-07-20
•
Granted: 1963-01-08
•
Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Wilkes Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:37
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12; H01Q3/16; H01Q3/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
IN COMBINATION, A TRANSMITTER HAVING A CIRCULAR WAVEGUIDE FOR PASSING ELECTROMAGNETIC ENERGY, A PARABOLIC REFLECTOR, AND A FEED COMPRISING A DIELECTRIC LENS OF CYLINDRICAL SHAPE INCLUDING A CONICAL IMPEDANCE MATCHING PORTION AT ITS INNER END FOR RECEIVING ELECTROMAGNETIC ENERGY FROM SAID WAVEGUIDE, A CONVEX DIELECTRIC LENS MOUNTED AT THE OUTER END OF SAID CYLINDRICAL LENS, A METAL DISK MOUNTED ON THE FACE OF SAID CONVEX LENS OPPOSITE SAID REFLECTOR FOR REFLECTING SAID ELETROMAGNETIC ENERGY, SAID DISK INCLUDING AN ORIFICE AND BEING ARRANGED TO REFLECT THE MAJOR PORTION OF SAID ELECTROMAGNETIC ENERGY BACK THROUGH SAID CONVEX LENS TO SAID REFLECTOR, AND ADDITIONAL MEANS MOUNTED ADJACENT SAID DISK FOR TURNING THE PORTION OF ELECTROMAGNETIC ENERGY THAT PASSES THROUGH SAID ORIFICE THROUGH SUBSTANTIALLY 180* TO ITS FORMER DIRECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |