Patent US3343170A successfully refreshed from Google Patents.
US3343170A
Expired / Lapsed
US
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Loran tracking and display means
Assignee: Electronic Concepts Inc
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Filing: 1965-10-22
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Granted: 1967-09-19
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Reuben E Maine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:28
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S1/24; G01S1/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
AN AUTOMATIC TRACKING LORAN RECEIVER SYSTEM COMPRISING IN COMBINATION, A RECEIVER FOR RECEIVING LORAN SIGNAL PULSES FROM TWO DIFFERENT LORAN TRANSMITTERS, A MASTER OSCILLATOR HAVING ITS FREQUENCY CONTROLLED RESPONSIVE TO SAID RECEIVED PULSES, A SINGLE COUNTING CHAIN FOR DERIVING SUBDIVISIONS OF THE OSCILLATOR FREQUENCY, FIRST SELECTIVELY ADJUSTABLE MEANS FOR DERIVING FROM A COMBINATION OF SUBDIVISIONS FROM SAID COUNTING CHAIN A TIMED SIGNAL REPRESENTATIVE OF THE BASIC PULSE REPETITION RATE, FURTHER SELECTIVELY ADJUSTABLE MEANS FOR CHOOSING A PREDETERMINED COMBINATION OF SUBDIVISIONS FROM SAID COUNTING CHAIN TO PRODUCE DELAYED SIGNALS REPRESENTATIVE OF THE TIMING OF ONE OF THE RECEIVED PULSES RELATIVE TO THE BASIC PULSE REPETITION RATE, SLAVE OSCILLATOR SYNCHRONIZED BY THE DELAYED SIGNALS, A FLIP-FLOP CIRCUIT TURNED ON RESPONSIVE TO SIGNALS FROM THE OTHER OSCILLATORS AND TURNED OFF RESPONSIVE TO SIGNALS FROM THE OTHER, AND A METER INDICATOR RESPONSIVE TO THE DUTY CYCLE OF SAID FLIP-FLOP CALIBRATED TO SIGNIFY A SIGNIFICANT DIGIT OF THE DIFFERENCE OF TIME BETWEEN THE TWO SIGNAL PULSES RECEIVED FROM THE DIFFERENT LORAN STATIONS.
Claim 2
Dependent Claim
167 words
AN AUTOMATIC TRACKING LORAN RECEIVER SYSTEM COMPRISING IN COMBINATION, A RECEIVER FOR RECEIVING LORAN SIGNAL PULSES FROM TWO DIFFERENT LORAN TRANSMITTERS, A MASTER OSCILLATOR HAVING ITS FREQUENCY CONTROLLED RESPONSIVE TO SAID RECEIVED PULSES, A SINGLE COUNTING CHAIN FOR DERIVING SUBDIVISIONS OF THE OSCILLATOR FREQUENCY, FIRST SELECTIVELY ADJUSTABLE MEANS FOR DERIVING FROM A COMBINATION OF SUBDIVISIONS FROM SAID COUNTING CHAIN A TIMED SIGNAL REPRESENTATIVE OF THE BASIC PULSE REPETITION RATE, FURTHER SELECTIVELY ADJUSTABLE MEANS FOR CHOOSING A PREDETERMINED COMBINATION OF SUBDIVISIONS FROM SAID COUNTING CHAIN TO PRODUCE DELAYED SIGNALS REPRESENTATIVE OF THE TIMING OF ONE OF THE RECEIVED PULSES RELATIVE TO THE BASIC PULSE REPETITION RATE, SLAVE OSCILLATOR SYNCHRONIZED BY THE DELAYED SIGNALS, A FLIP-FLOP CIRCUIT TURNED ON RESPONSIVE TO SIGNALS FROM THE OTHER OSCILLATORS AND TURNED OFF RESPONSIVE TO SIGNALS FROM THE OTHER, AND A METER INDICATOR RESPONSIVE TO THE DUTY CYCLE OF SAID FLIP-FLOP CALIBRATED TO SIGNIFY A SIGNIFICANT DIGIT OF THE DIFFERENCE OF TIME BETWEEN THE TWO SIGNAL PULSES RECEIVED FROM THE DIFFERENT LORAN STATIONS.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |