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Traffic light control buffer

  • US 3,302,170 A
  • Filed: 04/28/1964
  • Issued: 01/31/1967
  • Est. Priority Date: 04/28/1964
  • Status: Expired due to Term
First Claim
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1. IN A TRAFFIC LIGHT CONTROL SYSTEM, CONTROLLER MEANS AND STEPPING SWITCH MEANS, SAID CONTROLLER MEANS ACTUATING SAID SWITCH MEANS FOR ADVANCING A TRAFFIC LIGHT DISPLAY THROUGH A CYCLE INCLUDING A PLURALITY OF LIGHT ENERGIZING PERIODS IN RESPONSE TO A SERIES OF CLOCK PULSES, SAID CONTROLLER MEANS COMPRISING:

  • A PLURALITY OF REGISTERS, EACH ONE CAPABLE OF STORING NUMBERS REPRESENTING THE DURATION OF A LIGHT ENERGIZING PERIOD OF SAID CYCLE;

    AND COUNTING MEANS FOR COUNTING A NUMBER OF SAID CLOCK PULSES CORRESPONDING TO THE NUMBER STORED IN EACH ONE OF SAID REGISTERS AND FOR PROVIDING A CONTROL SIGNAL TO ADVANCE SAID TRAFFIC LIGHT DISPLAY AT THE COMPLETION OF EACH CLOCK PULSE COUNT CORRESPONDING TO SAID NUMBERS STORED IN SAID REGISTERS.

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