US3258745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic responsive vehicle traffic control system
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:29
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07; G08G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A TRAFFIC SIGNAL CONTROL SYSTEM CONTROLLING A SIGNAL AT AN INTERSECTION TO DISPLAY GREEN ASPEECTS ALTERNATELY TO TRAFFIC ON EACH OF AT LEAST TWO INTERFERING APPROACHES TO SAID INTERSECTION, VEHICLE DETECTOR MEANS OF THE PRESENCE DETECTING TYPE FOR EACH AND APPROACH FOR RESPECTIVELY DEMARCATING SUCCESSIVE INTERVALS TA AND TB IN WHICH EACH TA IS THE TIME REQUIRED FOR A VEHICLE TO PASS THROUGH A GIVEN DETECTION ZONE ON SAID FIRST APPROACH AND TB IS THE TIME REQUIRED ON THE SECOND TO PASS THROUGH A GIVEN DETECTION ZONE ON THE SECOND OF SAID APPROACHES, AND MEANS OPPERATIVELY CONNECTED WITH BOTH SAID VEHICLE DETECTOR MEANS FOR GENERATING A MANIFESTATION WHOSE VALUE IS REPRESENSATIVE O ($TA-$TB) OVER ANY MEASURING TIME, AND CONTROL MEANS RESPONSIVE TO THE VALUE OF SAID MANIFESTATION FOR ADJUSTING THE RELATIVE GREEN TIMES DISPLAYED BY SAID SIGNAL TO SAID FIRST AND SECOND APPROACHES.
Claim 2
Dependent Claim
143 words
A TRAFFIC SIGNAL CONTROL SYSTEM CONTROLLING A SIGNAL AT AN INTERSECTION TO DISPLAY GREEN ASPEECTS ALTERNATELY TO TRAFFIC ON EACH OF AT LEAST TWO INTERFERING APPROACHES TO SAID INTERSECTION, VEHICLE DETECTOR MEANS OF THE PRESENCE DETECTING TYPE FOR EACH AND APPROACH FOR RESPECTIVELY DEMARCATING SUCCESSIVE INTERVALS TA AND TB IN WHICH EACH TA IS THE TIME REQUIRED FOR A VEHICLE TO PASS THROUGH A GIVEN DETECTION ZONE ON SAID FIRST APPROACH AND TB IS THE TIME REQUIRED ON THE SECOND TO PASS THROUGH A GIVEN DETECTION ZONE ON THE SECOND OF SAID APPROACHES, AND MEANS OPPERATIVELY CONNECTED WITH BOTH SAID VEHICLE DETECTOR MEANS FOR GENERATING A MANIFESTATION WHOSE VALUE IS REPRESENSATIVE O ($TA-$TB) OVER ANY MEASURING TIME, AND CONTROL MEANS RESPONSIVE TO THE VALUE OF SAID MANIFESTATION FOR ADJUSTING THE RELATIVE GREEN TIMES DISPLAYED BY SAID SIGNAL TO SAID FIRST AND SECOND APPROACHES.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |