US3173140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doppler omnirange navigational system
Assignee: Servo Corp of America
•
Filing: 1959-02-20
•
Granted: 1965-03-09
•
Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Paul G Hansel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:33
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/38; G01S1/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A VOR-COMPATIBLE DOPPLER OMNIRANGE COMPRISING A FIRST ANTENNA SYSTEM HAVING AN APERTURE EXCEEDING TWO WAVELENGTHS AT THE FREQUENCY OF THE RADIATED ENERGY, A FIRST SOURCE OF ENERGY HAVING A PREDETERMINED FREQUENCY, MEANS FOR APPLYING SAID ENERGY TO SAID ANTENNA SYSTEM SO THAT THE ENERGY IS RADIATED PERIODICALLY FROM SUCCESSIVELY DIFFERENT DIRECTIONAL POINTS WHEREBY THE PHASE OF SAID ENERGY AT A DISTANT POINT VARIES PERIODICALLY IN A MANNER DEPENDENT ON THE DIRECTION OF SAID POINT RELATIVE TO SAID ANTENNA SYSTEM, A SECOND ANTENNA SYSTEM, A SECOND SOURCE OF ENERGY DIFFERING IN FREQUENCY BY A PREDETERMINED AMOUNT FROM THE ENERGY OF SAID FIRST SOURCE, MEANS FOR AMPLITUDE MODULATING SAID SECOND SOURCE OF ENERGY WITH A REFERENCE SIGNAL SYNCHRONIZED WITH THE PERIOD OF RADIA-
Claim 2
Dependent Claim
121 words
A VOR-COMPATIBLE DOPPLER OMNIRANGE COMPRISING A FIRST ANTENNA SYSTEM HAVING AN APERTURE EXCEEDING TWO WAVELENGTHS AT THE FREQUENCY OF THE RADIATED ENERGY, A FIRST SOURCE OF ENERGY HAVING A PREDETERMINED FREQUENCY, MEANS FOR APPLYING SAID ENERGY TO SAID ANTENNA SYSTEM SO THAT THE ENERGY IS RADIATED PERIODICALLY FROM SUCCESSIVELY DIFFERENT DIRECTIONAL POINTS WHEREBY THE PHASE OF SAID ENERGY AT A DISTANT POINT VARIES PERIODICALLY IN A MANNER DEPENDENT ON THE DIRECTION OF SAID POINT RELATIVE TO SAID ANTENNA SYSTEM, A SECOND ANTENNA SYSTEM, A SECOND SOURCE OF ENERGY DIFFERING IN FREQUENCY BY A PREDETERMINED AMOUNT FROM THE ENERGY OF SAID FIRST SOURCE, MEANS FOR AMPLITUDE MODULATING SAID SECOND SOURCE OF ENERGY WITH A REFERENCE SIGNAL SYNCHRONIZED WITH THE PERIOD OF RADIA-
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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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |