US3262120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable beamwidth antenna
Assignee: Individual
•
Filing: 1962-11-08
•
Granted: 1966-07-19
•
Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Ikrath Kurt
- 👤 Wilhelm A Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:15
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A MICROWAVE ANTENNA OF ADJUSTABLE BEAMWIDTH COMPRISING A HELICAL RADIATOR MOUNTED WITHIN AND COAXIALLY WITH A THIN-WALLED CYLINDRICAL DIELECTRIC TUBE, SAID HELICAL RADIATOR BEING ADAPTED TO SLIDE ALONG THE AXIS OF SAID TUBE, SAID HELICAL RADIATOR BEING DIMENSIONED TO RADIATE IN THE AXIAL OR BEAM MODE, SAID DIELECTRIC TUBE BEING APPROXIMATELY PI TIMES THE DIAMETER OF SAID HELICAL RADIATOR AND OF SUCH LENGTH AS TO PRODUCE A RADIATION PATTERN OF SUBSTANTIALLY LESS BEAMWIDTH THAN THAT OF SAID HELICAL RADIATOR.
Claim 2
Dependent Claim
79 words
A MICROWAVE ANTENNA OF ADJUSTABLE BEAMWIDTH COMPRISING A HELICAL RADIATOR MOUNTED WITHIN AND COAXIALLY WITH A THIN-WALLED CYLINDRICAL DIELECTRIC TUBE, SAID HELICAL RADIATOR BEING ADAPTED TO SLIDE ALONG THE AXIS OF SAID TUBE, SAID HELICAL RADIATOR BEING DIMENSIONED TO RADIATE IN THE AXIAL OR BEAM MODE, SAID DIELECTRIC TUBE BEING APPROXIMATELY PI TIMES THE DIAMETER OF SAID HELICAL RADIATOR AND OF SUCH LENGTH AS TO PRODUCE A RADIATION PATTERN OF SUBSTANTIALLY LESS BEAMWIDTH THAN THAT OF SAID HELICAL RADIATOR.
References Cited (Backward Citations)
US2863148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |