US3302168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic control system
Assignee: PAGE-WILSON Corp A CORP OF
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Filing: 1964-01-28
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Granted: 1967-01-31
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Expires: 1984-01-28
Abstract
No abstract record available.
Inventors
- 👤 George W Gray
- 👤 Leslie E Flory
- 👤 Winthrop S Pike
- 👤 Robert E Morey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:42
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/16; G08G1/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A TRAFFIC CONTROL CIRCUIT MEANS FOR COOPERATION WITH A BLOCK DETECTION MEANS AND WITH OTHER, LIKE TRAFFIC CONTROL CIRCUIT MEANS, SAID TRAFFIC CONTROL CIRCUIT MEANS BEING ARRANGED ALONG SAID ROADWAY, SAID BLOCK DETECTION MEANS DETECTING THE PRESENCE OR ABSENCE OF A VEHICLE AND PUTTING OUT A CORRESPONDING PRESENCE OR ABSENCE SIGNAL, EACH OF SAID CONTROL CIRCUIT MEANS COMPRISING: A FIRST LIGHT CIRCUIT ACTUATEAD BY A PRESENCE SIGNAL FROM A BLOCK DETECTION MEANS AND HAVING A TIME DELAY CIRCUIT TO ACTIVATE SAID LIGHT CIRCUIT A SELECTED TIME DELAY AFTER SAID ABSENCE SIGNAL CHANGES TO A PRESENCE SIGNAL, MEANS FOR DIMINISHING A SAID PRESENCE SIGNAL FOR TRANSMISSION TO ANOTHER, OF SAID LIKE TRAFFIC CONTROL CIRCUIT MEANS, A SECOND LIGHT CIRCUIT INCLUDING MEANS FOR RECEIVING A DIMINISHED PRESENCE SIGNAL FROM ANOTHER, LIKE TRAFFIC CONTROL CIRCUIT MEANS, SAID SECOND LIGHT CIRCUIT BEING ACTIVATED BY SAID DIMINISHED PRESENCE SIGNAL AND CONNECTED TO SAID FIRST LIGHT CIRCUIT, SAID SECOND LIGHT CIRCUIT WHEN ACTIVATED DISABLING SAID FIRST LIGHT CIRCUIT TO PREVENT ACTIVATION OF SAID FIRST LIGHT CIRCUIT.
Claim 2
Dependent Claim
170 words
A TRAFFIC CONTROL CIRCUIT MEANS FOR COOPERATION WITH A BLOCK DETECTION MEANS AND WITH OTHER, LIKE TRAFFIC CONTROL CIRCUIT MEANS, SAID TRAFFIC CONTROL CIRCUIT MEANS BEING ARRANGED ALONG SAID ROADWAY, SAID BLOCK DETECTION MEANS DETECTING THE PRESENCE OR ABSENCE OF A VEHICLE AND PUTTING OUT A CORRESPONDING PRESENCE OR ABSENCE SIGNAL, EACH OF SAID CONTROL CIRCUIT MEANS COMPRISING: A FIRST LIGHT CIRCUIT ACTUATEAD BY A PRESENCE SIGNAL FROM A BLOCK DETECTION MEANS AND HAVING A TIME DELAY CIRCUIT TO ACTIVATE SAID LIGHT CIRCUIT A SELECTED TIME DELAY AFTER SAID ABSENCE SIGNAL CHANGES TO A PRESENCE SIGNAL, MEANS FOR DIMINISHING A SAID PRESENCE SIGNAL FOR TRANSMISSION TO ANOTHER, OF SAID LIKE TRAFFIC CONTROL CIRCUIT MEANS, A SECOND LIGHT CIRCUIT INCLUDING MEANS FOR RECEIVING A DIMINISHED PRESENCE SIGNAL FROM ANOTHER, LIKE TRAFFIC CONTROL CIRCUIT MEANS, SAID SECOND LIGHT CIRCUIT BEING ACTIVATED BY SAID DIMINISHED PRESENCE SIGNAL AND CONNECTED TO SAID FIRST LIGHT CIRCUIT, SAID SECOND LIGHT CIRCUIT WHEN ACTIVATED DISABLING SAID FIRST LIGHT CIRCUIT TO PREVENT ACTIVATION OF SAID FIRST LIGHT CIRCUIT.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |