US3241108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic actuated control system
Assignee: Laboratory For Electronics Inc
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Filing: 1960-09-12
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Granted: 1966-03-15
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Vivier Charles L Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:17
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07; G08G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
IN A TRAFFIC CONTROL SYSTEM HAVING VEHICLE DETECTORS INDIVIDUALLY TO EACH OF A PLURALITY OF LANES IN EACH OF TWO TRAFFIC PHASES AND HAVING FOR EACH ONE PHASE A COMMON ACCORD OF RIGHT-OF-WAY TO THE PLURAL LANES OF SAID ONE PHASE, EACH SAID DETECTOR PROVIDING ELECTRICAL IMPULSES IN RESPONSE TO VEHICLE ACTUATION IN ITS ASSOCIATED LANE, THE COMBINATION COMPRISING AN INDIVIDUAL LANE TIMER MEANS INDIVIDUAL TO AND ASSOCIATED WITH EACH OF SAID DETECTORS TO RECEIVE ELECTRICAL IMPULSES THEREFROM, MEANS IN EACH SAID LANE TIMER MEANS OF ONE TRAFFIC PHASE FOR PRODUCING A VEHICLE GAP SIGNAL, SAID SIGNAL REPRESENTING THE TIME GAP FROM THE LAST PRIOR VEHICLE ACTUATION OF ITS ASSOCIATED DETECTOR AND BEING QUANTITATIVELY RELATED TO THE DENSITY OF VEHICLE TRAFFIC OVER ITS RESPECTIVE DETECTORS, MEANS IN THE OTHER SAID PHASE FOR PROVIDING A TIME WAITING CONTROL SIGNAL, MEANS IN THE LANE TIMER MEANS OF SAID ONE PHASE FOR PROVIDING AN ELECTRICAL SIGNAL PROGRESSIVELY VARYING WITH TIME IN RESPONSE TO SAID TIME WAITING CONTROL SIGNAL, SAID ELECTRICAL SIGNAL REPRESENTING WAITING TIME ON SAID OTHER PHASE, MEANS IN THE LANE TIMER MEANS OF SAID ONE PHASE FOR PROVIDING A FURTHER ELECTRICAL SIGNAL VARYING PROGRESSIVELY IN RESPONSE TO THE IMPULSES FROM THE DETECTORS OF SAID OTHER PHASE, SAID FURTHER ELECTRICAL SIGNAL REPRESENTING THE NUMBER OF CARS WAITING ON SAID OTHER
Claim 2
Dependent Claim
218 words
IN A TRAFFIC CONTROL SYSTEM HAVING VEHICLE DETECTORS INDIVIDUALLY TO EACH OF A PLURALITY OF LANES IN EACH OF TWO TRAFFIC PHASES AND HAVING FOR EACH ONE PHASE A COMMON ACCORD OF RIGHT-OF-WAY TO THE PLURAL LANES OF SAID ONE PHASE, EACH SAID DETECTOR PROVIDING ELECTRICAL IMPULSES IN RESPONSE TO VEHICLE ACTUATION IN ITS ASSOCIATED LANE, THE COMBINATION COMPRISING AN INDIVIDUAL LANE TIMER MEANS INDIVIDUAL TO AND ASSOCIATED WITH EACH OF SAID DETECTORS TO RECEIVE ELECTRICAL IMPULSES THEREFROM, MEANS IN EACH SAID LANE TIMER MEANS OF ONE TRAFFIC PHASE FOR PRODUCING A VEHICLE GAP SIGNAL, SAID SIGNAL REPRESENTING THE TIME GAP FROM THE LAST PRIOR VEHICLE ACTUATION OF ITS ASSOCIATED DETECTOR AND BEING QUANTITATIVELY RELATED TO THE DENSITY OF VEHICLE TRAFFIC OVER ITS RESPECTIVE DETECTORS, MEANS IN THE OTHER SAID PHASE FOR PROVIDING A TIME WAITING CONTROL SIGNAL, MEANS IN THE LANE TIMER MEANS OF SAID ONE PHASE FOR PROVIDING AN ELECTRICAL SIGNAL PROGRESSIVELY VARYING WITH TIME IN RESPONSE TO SAID TIME WAITING CONTROL SIGNAL, SAID ELECTRICAL SIGNAL REPRESENTING WAITING TIME ON SAID OTHER PHASE, MEANS IN THE LANE TIMER MEANS OF SAID ONE PHASE FOR PROVIDING A FURTHER ELECTRICAL SIGNAL VARYING PROGRESSIVELY IN RESPONSE TO THE IMPULSES FROM THE DETECTORS OF SAID OTHER PHASE, SAID FURTHER ELECTRICAL SIGNAL REPRESENTING THE NUMBER OF CARS WAITING ON SAID OTHER
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |