US3258769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multirate radar system including improved automatic rate switching means
Assignee: Compagnie Francaise Thomson Houston SA
•
Filing: 1964-01-13
•
Granted: 1966-06-28
•
Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Henri G P Forcstier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:27
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/526; G01S13/528; G01S13/06; G01S13/08; G01S13/10; G01S13/22; G01S13/227; G01S13/66; G01S13/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A RADAR SYSTEM COMPRISING RADAR TRANSMITTING AND RECEIVING MEANS, THE TRANSMITTING MEANS INCLUDING MEANS GENERATING KEYING PULSE TRAINS AT EACH OF AT LEAST TWO DIFFERENT REPETITION FREQUENCIES, AND A RADAR TRANSMITTER KEYABLE BY THE APPLICATION OF ANY ONE OF SAID TRAINS TO A KEYING INPUT THEREOF SO AS TO TRANSMIT RADAR PULSES AT A CORRESPONDING REPETITION FREQUENCY, SAID FREQUENCIES BEING SO SELECTED IN RELATION TO ONE ANOTHER THAT PULSES IN THE RESPECTIVE TRAINS INTERMITTENTLY COINCIDE, MEANS FOR COMMANDING A CHANGE-OVER FROM ONE TO ANOTHER OF SAID FREQUENCIES, AND LOGIC MEANS RESPONSIVE TO THE OCCURRENCE OF A CONCIDENCE BETWEEN PULSES IN THE KEYING PULSE TRAINS AT SAID RESPECTIVE FREQUENCIES FOLLOWING A CHANGE-OVER COMMAND FOR SWITCHING OFF THE KEYING PULSE TRAIN AT SAID ONE FREQUENCY FROM THE KEYING INPUT OF THE TRANSMITTER AND SWITCHING-ON THE KEYING PULSE TRAIN AT SAID OTHER FREQUENCY INSTEAD.
Claim 2
Dependent Claim
141 words
A RADAR SYSTEM COMPRISING RADAR TRANSMITTING AND RECEIVING MEANS, THE TRANSMITTING MEANS INCLUDING MEANS GENERATING KEYING PULSE TRAINS AT EACH OF AT LEAST TWO DIFFERENT REPETITION FREQUENCIES, AND A RADAR TRANSMITTER KEYABLE BY THE APPLICATION OF ANY ONE OF SAID TRAINS TO A KEYING INPUT THEREOF SO AS TO TRANSMIT RADAR PULSES AT A CORRESPONDING REPETITION FREQUENCY, SAID FREQUENCIES BEING SO SELECTED IN RELATION TO ONE ANOTHER THAT PULSES IN THE RESPECTIVE TRAINS INTERMITTENTLY COINCIDE, MEANS FOR COMMANDING A CHANGE-OVER FROM ONE TO ANOTHER OF SAID FREQUENCIES, AND LOGIC MEANS RESPONSIVE TO THE OCCURRENCE OF A CONCIDENCE BETWEEN PULSES IN THE KEYING PULSE TRAINS AT SAID RESPECTIVE FREQUENCIES FOLLOWING A CHANGE-OVER COMMAND FOR SWITCHING OFF THE KEYING PULSE TRAIN AT SAID ONE FREQUENCY FROM THE KEYING INPUT OF THE TRANSMITTER AND SWITCHING-ON THE KEYING PULSE TRAIN AT SAID OTHER FREQUENCY INSTEAD.
References Cited (Backward Citations)
US3155973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |