Patent US2435464A successfully refreshed from Google Patents.
US3234548A
Expired / Lapsed
US
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Doppler radar system
Assignee: Laboratory For Electronics Inc
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Filing: 1963-05-16
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Granted: 1966-02-08
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr George V Colby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN AIRBORNE PULSED DOPPLER RADAR SYSTEM FOR DETECTING THE RELATIVE SPEED BETWEEN A VEHICLE SUPPORTING SUCH A SYSTEM AND TARGETS WITHOUT SUCH VEHICLE, THE SYSTEM UTILIZING THE SAME ANTENNA MEANS FOR TRANSMITTING AND RECEIVING ELECTROMAGNETIC ENERGY, THE LEVEL OF SUCH ENERGY LEAKING FROM THE TRANSMITTER TO THE RECEIVER OF SUCH SYSTEM DURING SUCCESSIVE TRANSMITTING PERIODS IN GREATER THAN THE LEVEL OF SUCH ENERGY REFLECTING BACK FROM TRAGETS TO THE RECEIVER DURING INTERVALS BETWEEN SUCH TRANSMITTING PERIODS, COMPRISING: (A) MEANS FOR GENERATING PULSES OF ELECTROMAGNETIC ENERGY IN ACCORDANCE WITH A PREDETERMINED PROGRAM; (B) MEANS, INCLUDING A DUPLEXER AND AN ANTENNA, FOR TRANSMITTING THE GREATER PORTION OF EACH GENERATED PULSE OF ELECTROMAGNETIC ENERGY TOWARD TARGETS WITHOUT THE VEHICLE; (C) RECEIVER MEANS FOR PRODUCING A SIGNAL IN ACCORDANCE WITH THE FREQUENCY OF THE ELECTROMAGNETIC ENERGY REFLECTED BACK FROM TARGETS AND RECEIVED BY THE ANTENNA, THE RECEIVER MEANS INCLUDING: (1) HETERODYING MEANS, INCLUDING A CONTINUOUSLY OPERATING FIRST LOCAL OSCILLATOR, FOR CONVERTING BOTH THE LEAKAGE PORTION OF EACH GENERATED
Claim 2
Dependent Claim
164 words
AN AIRBORNE PULSED DOPPLER RADAR SYSTEM FOR DETECTING THE RELATIVE SPEED BETWEEN A VEHICLE SUPPORTING SUCH A SYSTEM AND TARGETS WITHOUT SUCH VEHICLE, THE SYSTEM UTILIZING THE SAME ANTENNA MEANS FOR TRANSMITTING AND RECEIVING ELECTROMAGNETIC ENERGY, THE LEVEL OF SUCH ENERGY LEAKING FROM THE TRANSMITTER TO THE RECEIVER OF SUCH SYSTEM DURING SUCCESSIVE TRANSMITTING PERIODS IN GREATER THAN THE LEVEL OF SUCH ENERGY REFLECTING BACK FROM TRAGETS TO THE RECEIVER DURING INTERVALS BETWEEN SUCH TRANSMITTING PERIODS, COMPRISING: (A) MEANS FOR GENERATING PULSES OF ELECTROMAGNETIC ENERGY IN ACCORDANCE WITH A PREDETERMINED PROGRAM; (B) MEANS, INCLUDING A DUPLEXER AND AN ANTENNA, FOR TRANSMITTING THE GREATER PORTION OF EACH GENERATED PULSE OF ELECTROMAGNETIC ENERGY TOWARD TARGETS WITHOUT THE VEHICLE; (C) RECEIVER MEANS FOR PRODUCING A SIGNAL IN ACCORDANCE WITH THE FREQUENCY OF THE ELECTROMAGNETIC ENERGY REFLECTED BACK FROM TARGETS AND RECEIVED BY THE ANTENNA, THE RECEIVER MEANS INCLUDING: (1) HETERODYING MEANS, INCLUDING A CONTINUOUSLY OPERATING FIRST LOCAL OSCILLATOR, FOR CONVERTING BOTH THE LEAKAGE PORTION OF EACH GENERATED
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |