US3287730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable polarization antenna
Assignee: Individual
•
Filing: 1963-02-05
•
Granted: 1966-11-22
•
Expires: 1983-02-05
Abstract
No abstract record available.
Inventors
- 👤 John L Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:04
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
APPARATUS FOR TRANSFORMING STATIONARY PLANE POLARIZED RADIATION INTO RADIATION HAVING ANY PRESELECTED CONDITION OF POLARIZATION COMPRISING FIRST AND SECOND RECTANGULAR WAVEGUIDES, A CIRCULAR WAVEGUIDE ROTATING JOINT COUPLING SAID FIRST AND SECOND RECTANGULAR WAVEGUIDE ADJACENT ONE END OF EACH SAID RECTANGULAR WAVEGUIDES, THE LONGITUDINAL AXIS OF SAID JOINT BEING PERPENDICULAR TO THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND RECTANGULAR WAVEGUIDES ADJACENT SQID ONE END, THE LONGITUDINAL AXIS OF SAID SECOND RECTANGULAR WAVEGUIDE AT THE OTHER END BEING COINCIDENT WITH SAID LONGITUDINAL AXIS OF SAID JOINT, MEANS FOR ROTATING SAID SECOND RECTANGULAR WAVEGUIDE ABOUT SAID LONGITUDINAL AXIS AT SAID OTHER END THEREOF, AN ELLIPTICAL WAVEGUIDE, A ROTATING JOINT CONNECTING ONE END OF SAID ELLIPTICAL WAVEGUIDE TO SAID OTHER END OF SAID SECOND RECTANGULAR WAVEGUIDE WITH THE LONGITUDINAL AXIS OF SAID ELLIPTICAL WAVEGUIDE COINCIDENT WITH THE LONGITUDINAL AXIS OF SAID OTHER END OF SAID SECOND RECTANGULAR WAVEGUIDE, AND MEANS FOR ROTATING SAID ELLIPTICAL WAVEGUIDE ABOUT SAID LONGITUDINAL AXIS THEREOF.
Claim 2
Dependent Claim
157 words
APPARATUS FOR TRANSFORMING STATIONARY PLANE POLARIZED RADIATION INTO RADIATION HAVING ANY PRESELECTED CONDITION OF POLARIZATION COMPRISING FIRST AND SECOND RECTANGULAR WAVEGUIDES, A CIRCULAR WAVEGUIDE ROTATING JOINT COUPLING SAID FIRST AND SECOND RECTANGULAR WAVEGUIDE ADJACENT ONE END OF EACH SAID RECTANGULAR WAVEGUIDES, THE LONGITUDINAL AXIS OF SAID JOINT BEING PERPENDICULAR TO THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND RECTANGULAR WAVEGUIDES ADJACENT SQID ONE END, THE LONGITUDINAL AXIS OF SAID SECOND RECTANGULAR WAVEGUIDE AT THE OTHER END BEING COINCIDENT WITH SAID LONGITUDINAL AXIS OF SAID JOINT, MEANS FOR ROTATING SAID SECOND RECTANGULAR WAVEGUIDE ABOUT SAID LONGITUDINAL AXIS AT SAID OTHER END THEREOF, AN ELLIPTICAL WAVEGUIDE, A ROTATING JOINT CONNECTING ONE END OF SAID ELLIPTICAL WAVEGUIDE TO SAID OTHER END OF SAID SECOND RECTANGULAR WAVEGUIDE WITH THE LONGITUDINAL AXIS OF SAID ELLIPTICAL WAVEGUIDE COINCIDENT WITH THE LONGITUDINAL AXIS OF SAID OTHER END OF SAID SECOND RECTANGULAR WAVEGUIDE, AND MEANS FOR ROTATING SAID ELLIPTICAL WAVEGUIDE ABOUT SAID LONGITUDINAL AXIS THEREOF.
References Cited (Backward Citations)
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Cited
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Cited
US2930040A
Cited
US3076188A
Cited
US3024463A
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US3089104A
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |