Traffic control system
First Claim
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1. 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.
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Accused Products
28 Citations
1 Claim
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1. 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.
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Current AssigneePage-Wilson Corporation
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Original AssigneeGeorge W. Gray, Leslie E. Flory, Robert E. Morey, Winthrop S. Pike
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InventorsGray, George W., Flory, Leslie E., Pike, Winthrop S., Morey, Robert E.
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Application NumberUS04/340,679Time in Patent Office1,099 DaysField of SearchUS Class Current340/932CPC Class CodesG08G 1/164 Centralised systems, e.g. e...
