US3083364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bifilar wound quarter-wave helical antenna having broadside radiation
Assignee: Commscope Technologies LLC
•
Filing: 1958-07-23
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Granted: 1963-03-26
•
Expires: 1978-07-23
Abstract
No abstract record available.
Inventors
- 👤 Marvel W Scheldorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:18
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN ANTENNA HAVING AS A RADIATING ELEMENT THEREOF A PAIR OF CONDUCTORS HELICALLY WOUND ON THE SAME DIAMETER ABOUT A COMMON AXIS IN THE SAME DIRECTION OF WINDING, THE CONDUCTORS BEING PARALLEL AND HAVING CORRESPONDING PORTIONS THEREOF DISPLACED BY AN ARC OF AT LEAST 90* WITH RESPECT TO THE AXIS, THE PITCH OF THE HELICAL WINDINGS BEING BETWEEN 5* AND 60*, AND ONE OF THE CONDUCTORS BEING OF LARGER DIAMETER THAN THE OTHER CONDUCTOR, THE RADIATING ELEMENT HAVING AN OVERALL LENGTH SUBSTANTIALLY LESS THAN A QUARTER WAVELENGTH AND BEING AT QUARTER-WAVE RESONANCE AT ITS FREQUENCY OF OPERATION.
Claim 2
Dependent Claim
97 words
AN ANTENNA HAVING AS A RADIATING ELEMENT THEREOF A PAIR OF CONDUCTORS HELICALLY WOUND ON THE SAME DIAMETER ABOUT A COMMON AXIS IN THE SAME DIRECTION OF WINDING, THE CONDUCTORS BEING PARALLEL AND HAVING CORRESPONDING PORTIONS THEREOF DISPLACED BY AN ARC OF AT LEAST 90* WITH RESPECT TO THE AXIS, THE PITCH OF THE HELICAL WINDINGS BEING BETWEEN 5* AND 60*, AND ONE OF THE CONDUCTORS BEING OF LARGER DIAMETER THAN THE OTHER CONDUCTOR, THE RADIATING ELEMENT HAVING AN OVERALL LENGTH SUBSTANTIALLY LESS THAN A QUARTER WAVELENGTH AND BEING AT QUARTER-WAVE RESONANCE AT ITS FREQUENCY OF OPERATION.
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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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |