US3309708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tactical landing approach radio system
Assignee: General Precision Inc
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Filing: 1966-03-11
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Granted: 1967-03-14
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Donald J Toman
- 👤 Leonard O Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:26
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A TACTICAL LANDING APPROACH RADIO SYSTEM COMPRISING, A GROUND-BASED TRANSMITTER INCLUDING ANTENNA MEANS FOR RADIATING A PLURALITY OF DIRECTIVE BEAMS OF RADIO SIGNAL ENERGY INCLUDING, A MAIN BEAM, A FIRST AUXILIARY BEAM AND A SECOND AUXILIARY BEAM, MEANS FOR ROTATING SAID MAIN BEAM OF SIGNAL ENERGY IN A CONICAL SCAN ABOUT AN AXIS AT A SELECTED RATE OF ROTATION, MEANS OPERATED IN SYNCHRONISM WITH THE ROTATION OF SAID MAIN BEAM FOR GENERATING A REFERENCE SIGNAL HAVING A FREQUENCY RELATED TO THE RATE OF ROTATION OF SAID MAIN BEAM AND A PHASE DEPENDENT ON THE POSITIONAL DISPLACEMENT THEREOF, A LOCAL OSCILLATOR, CYCLIC TIMING MEANS FOR PROVIDING A TIMED CYCLE INCLUDING A FIRST TIMED INTERVAL AND A SECOND TIMED INTERVAL, MEANS FOR FREQUENCY MODULATING THE OUTPUT OF SAID LOCAL OSCILLATOR BY THE SAID REFERENCE SIGNAL DURING SAID FIRST TIMED INTERVAL, A MICROWAVE GENERATOR, MEANS FOR AMPLITUDE MODULATING THE OUTPUT OF SAID MICROWAVE GENERATOR BY THE FREQUENCY MODULATED OUTPUT OF SAID LOCAL OSCILLATOR FOR GENERATING A MODULATED MAIN BEAM TRANSMISSION SIGNAL DURING SAID FIRST TIMED INTERVAL,
Claim 2
Dependent Claim
173 words
A TACTICAL LANDING APPROACH RADIO SYSTEM COMPRISING, A GROUND-BASED TRANSMITTER INCLUDING ANTENNA MEANS FOR RADIATING A PLURALITY OF DIRECTIVE BEAMS OF RADIO SIGNAL ENERGY INCLUDING, A MAIN BEAM, A FIRST AUXILIARY BEAM AND A SECOND AUXILIARY BEAM, MEANS FOR ROTATING SAID MAIN BEAM OF SIGNAL ENERGY IN A CONICAL SCAN ABOUT AN AXIS AT A SELECTED RATE OF ROTATION, MEANS OPERATED IN SYNCHRONISM WITH THE ROTATION OF SAID MAIN BEAM FOR GENERATING A REFERENCE SIGNAL HAVING A FREQUENCY RELATED TO THE RATE OF ROTATION OF SAID MAIN BEAM AND A PHASE DEPENDENT ON THE POSITIONAL DISPLACEMENT THEREOF, A LOCAL OSCILLATOR, CYCLIC TIMING MEANS FOR PROVIDING A TIMED CYCLE INCLUDING A FIRST TIMED INTERVAL AND A SECOND TIMED INTERVAL, MEANS FOR FREQUENCY MODULATING THE OUTPUT OF SAID LOCAL OSCILLATOR BY THE SAID REFERENCE SIGNAL DURING SAID FIRST TIMED INTERVAL, A MICROWAVE GENERATOR, MEANS FOR AMPLITUDE MODULATING THE OUTPUT OF SAID MICROWAVE GENERATOR BY THE FREQUENCY MODULATED OUTPUT OF SAID LOCAL OSCILLATOR FOR GENERATING A MODULATED MAIN BEAM TRANSMISSION SIGNAL DURING SAID FIRST TIMED INTERVAL,
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |