US3140488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miss distance indicator
Assignee: Thales SA
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Filing: 1961-12-14
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Granted: 1964-07-07
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Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Girault Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/10; H01J37/14; H01J37/141; F; F42; F42C; F42C13/00; F42C13/04; G; G01; G01N; G01N23/00; G01N23/22; G01N23/225; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/505; H01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A SYSTEM FOR MEASURING THE INSTANTANEOUS DISTANCE, BETWEEN TWO OBJECTS IN RELATIVE MOTION WITH RESPECT TO EACH OTHER COMPRISING, CARRIED BY ONE OF SAID OBJECTS: TWO TRANSMITTERS RESPECTIVELY TRANSMITTING ULTRA-HIGH FREQUENCY SIGNALS ON TWO FREQUENCIES CLOSE TO EACH OTHER; A RECEIVER FOR DIRECTLY RECEIVING SAID TWO SIGNALS AND FOR RECEIVING THE RESPECTIVE ECHOES OF SAID SIGNALS TRANSMITTED BY SAID OTHER OBJECT; MEANS FOR DETECTING THE RESPECTIVE DOPPLER FREQUENCY SIGNALS OF SAID ECHO SIGNALS; MEANS FOR DERIVING RESPECTIVE PULSES EACH TIME A DOPPLER SIGNAL IS EQUAL TO ZERO; AND AND-GATE HAVING TWO INPUTS FOR RECEIVING RESPECTIVELY SAID PULSES AND AN OUTPUT; AND A COUNTER COUPLED TO SAID OUTPUT AND THUS CONTROLLED BY SAID AND-GATE FOR STARTING UPON FIRST SIMULTANEOUS RECEPTION OF SAID TWO PULSES AND STOPPING UPON SECOND SIMULTANEOUS RECEPTION OF SAID PULSES.
Claim 2
Independent Claim
132 words
A SYSTEM FOR MEASURING THE INSTANTANEOUS DISTANCE, BETWEEN TWO OBJECTS IN RELATIVE MOTION WITH RESPECT TO EACH OTHER COMPRISING, CARRIED BY ONE OF SAID OBJECTS: TWO TRANSMITTERS RESPECTIVELY TRANSMITTING ULTRA-HIGH FREQUENCY SIGNALS ON TWO FREQUENCIES CLOSE TO EACH OTHER; A RECEIVER FOR DIRECTLY RECEIVING SAID TWO SIGNALS AND FOR RECEIVING THE RESPECTIVE ECHOES OF SAID SIGNALS TRANSMITTED BY SAID OTHER OBJECT; MEANS FOR DETECTING THE RESPECTIVE DOPPLER FREQUENCY SIGNALS OF SAID ECHO SIGNALS; MEANS FOR DERIVING RESPECTIVE PULSES EACH TIME A DOPPLER SIGNAL IS EQUAL TO ZERO; AND AND-GATE HAVING TWO INPUTS FOR RECEIVING RESPECTIVELY SAID PULSES AND AN OUTPUT; AND A COUNTER COUPLED TO SAID OUTPUT AND THUS CONTROLLED BY SAID AND-GATE FOR STARTING UPON FIRST SIMULTANEOUS RECEPTION OF SAID TWO PULSES AND STOPPING UPON SECOND SIMULTANEOUS RECEPTION OF SAID PULSES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |