US3143734A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1957-01-30
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Granted: 1964-08-04
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Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Raabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:53
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/60; G01S13/605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
APPARATUS ON AN AIRCRAFT FOR CONTINUOUSLY INDICATING THE MAGNITUDE AND DIRECTION OF THE VELOCITY VECTOR OF THE AIRCRAFT, COMPRISING: A TRANSMITTING ANTENNA HAVING A DOWNWARDLY DIRECTED WIDE ANGLE CONICAL PATTERN; MEANS PROVIDING A PAIR OF CENTERS OF ROTATION LOCATED AT A DISTANCE D ON EITHER SIDE OF SAID TRANSMITTING ANTENNA AND ON A HORIZONTAL AXIS PASSING THROUGH SAID TRANSMITTING ANTENNA; A PAIR OF RECEIVING ANTENNAS, HAVING DOWNWARDLY DIRECTED WIDE ANGLE CONICAL PATTERNS, MOUNTED SO AS TO HAVE EQUAL ECCENTRICITIES RELATIVE TO SAID CENTERS OF ROTATION; MEANS FOR ROTATING SAID RECEIVING ANTENNAS AT THE SAME SPEED AND IN THE SAME DIRECTION ABOUT SAID CENTERS OF ROTATION, THE PHASING OF THE ROTATION BEING SUCH THAT THE RECEIVING ANTENNAS ARE ALWAYS EQUIDISTANT FROM THE TRANSMITTING ANTENNA; MEANS FOR FEEDING CONTINUOUS HIGH FREQUENCY ENERGY TO SAID TRANSMITTING ANTENNA WHICH RADIATES SAID ENERGY EARTHWARD; MEANS FOR DELAYING BY AN INTERVAL T THE REFLECTED SIGNAL RECEIVED BY ONE OF SAID RECEIVING ANTENNAS; MEANS FOR SUBTRACTING THE DELAYED SIGNAL FROM THE REFLECTED SIGNAL RECEIVED BY THE OTHER RECEIVING ANTENNA TO PRODUCE A DIFFERENCE SIGNAL; MEANS ACTUATED BY A FIRST SERVO FOR ADJUSTING THE RATIO D/T; MEANS
Claim 2
Dependent Claim
189 words
APPARATUS ON AN AIRCRAFT FOR CONTINUOUSLY INDICATING THE MAGNITUDE AND DIRECTION OF THE VELOCITY VECTOR OF THE AIRCRAFT, COMPRISING: A TRANSMITTING ANTENNA HAVING A DOWNWARDLY DIRECTED WIDE ANGLE CONICAL PATTERN; MEANS PROVIDING A PAIR OF CENTERS OF ROTATION LOCATED AT A DISTANCE D ON EITHER SIDE OF SAID TRANSMITTING ANTENNA AND ON A HORIZONTAL AXIS PASSING THROUGH SAID TRANSMITTING ANTENNA; A PAIR OF RECEIVING ANTENNAS, HAVING DOWNWARDLY DIRECTED WIDE ANGLE CONICAL PATTERNS, MOUNTED SO AS TO HAVE EQUAL ECCENTRICITIES RELATIVE TO SAID CENTERS OF ROTATION; MEANS FOR ROTATING SAID RECEIVING ANTENNAS AT THE SAME SPEED AND IN THE SAME DIRECTION ABOUT SAID CENTERS OF ROTATION, THE PHASING OF THE ROTATION BEING SUCH THAT THE RECEIVING ANTENNAS ARE ALWAYS EQUIDISTANT FROM THE TRANSMITTING ANTENNA; MEANS FOR FEEDING CONTINUOUS HIGH FREQUENCY ENERGY TO SAID TRANSMITTING ANTENNA WHICH RADIATES SAID ENERGY EARTHWARD; MEANS FOR DELAYING BY AN INTERVAL T THE REFLECTED SIGNAL RECEIVED BY ONE OF SAID RECEIVING ANTENNAS; MEANS FOR SUBTRACTING THE DELAYED SIGNAL FROM THE REFLECTED SIGNAL RECEIVED BY THE OTHER RECEIVING ANTENNA TO PRODUCE A DIFFERENCE SIGNAL; MEANS ACTUATED BY A FIRST SERVO FOR ADJUSTING THE RATIO D/T; MEANS
References Cited (Backward Citations)
US2422064A
Cited
US2669710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |