Patent US4675890A successfully refreshed from Google Patents.
Patent US3146448A successfully refreshed from Google Patents.
US3146448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle guidance system
Assignee: Tamar Electronics Industries Inc
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Filing: 1962-12-04
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Granted: 1964-08-25
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Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 Rulon G Shelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:42
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/91; G01S13/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A VEHICLE GUIDANCE SYSTEM, A PLURALITY OF BEACON TRANSMITTERS HAVING DIFFERENT TRANSMISSION FREQUENCIES FIXEDLY LOCATED IN A PREDETERMINED RELATIVE POSITIONAL RELATIONSHIP, DIRECTION FINDING MEANS MOUNTED IN SAID VEHICLE FOR DETECTING THE BEAT SIGNALS PRODUCED BETWEEN SAID TRANSMITTER OUTPUTS AND GENERATING OUTPUT SIGNALS IN ACCORDANCE THEREWITH HAVING TIME DURATIONS IN ACCORDANCE WITH THE ANGLES SUBTENDED AT SAID VEHICLE BETWEEN SAID BEACON TRANSMITTERS, AND SIGNAL PROCESSOR MEANS MOUNTED IN SAID VEHICLE AND RESPONSIVELY CONNECTED TO THE OUTPUT OF SAID DIRECTION FINDING MEANS FOR GENERATING SIGNALS IN ACCORDANCE WITH THE RANGE TO ONE OF SAID TRANSMITTERS AND VEHICLE AZIMUTH AND ELEVATION STEERING INFORMATION.
Claim 2
Dependent Claim
101 words
IN A VEHICLE GUIDANCE SYSTEM, A PLURALITY OF BEACON TRANSMITTERS HAVING DIFFERENT TRANSMISSION FREQUENCIES FIXEDLY LOCATED IN A PREDETERMINED RELATIVE POSITIONAL RELATIONSHIP, DIRECTION FINDING MEANS MOUNTED IN SAID VEHICLE FOR DETECTING THE BEAT SIGNALS PRODUCED BETWEEN SAID TRANSMITTER OUTPUTS AND GENERATING OUTPUT SIGNALS IN ACCORDANCE THEREWITH HAVING TIME DURATIONS IN ACCORDANCE WITH THE ANGLES SUBTENDED AT SAID VEHICLE BETWEEN SAID BEACON TRANSMITTERS, AND SIGNAL PROCESSOR MEANS MOUNTED IN SAID VEHICLE AND RESPONSIVELY CONNECTED TO THE OUTPUT OF SAID DIRECTION FINDING MEANS FOR GENERATING SIGNALS IN ACCORDANCE WITH THE RANGE TO ONE OF SAID TRANSMITTERS AND VEHICLE AZIMUTH AND ELEVATION STEERING INFORMATION.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |