Aircraft tracking and indicating system

• US 3,152,315 A
• Filed: 01/27/1961
• Issued: 10/06/1964
• Est. Priority Date: 01/27/1961
• Status: Expired due to Term

• Current Assignee: Montgomery Rodgers Lionel
• Original Assignee: Montgomery Rodgers Lionel
• Inventors: MONTGOMERY RODGERS LIONEL
• Application Number:
  US04/085,413
• Time in Patent Office: 1,348 Days
• US Class Current: 340/995.27
• CPC Class Codes: G08G 5/0026 located on the ground
• CPC Class Codes: G08G 5/065 Navigation or guidance aids, e.g. for taxiing or rolling

Claims

1. IN A TRACKING SYSTEM FOR AIRCRAFT TRAVELING ALONG A PREDETERMINED PATH, A SERIES OF AIRCRAFT ACTUATED DETECTION STATIONS SPACED ALONG SAID PATH, AN INTERCONNECTED RELAY SYSTEM FOR SAID SERIES OF STATIONS AND INCLUDING FOR EACH DETECTION STATION, FIRST RELAY MEANS OPERABLE FOR PROVIDING AN OUTPUT INDICATIONS OF AN AIRCRAFT TRAVELING IN A FIRST DIRECTION IN RESPONSE TO A SEQUENCE OF ACTUATIONS BY SAID AIRCRAFT AT A SUCCESSION OF SAID DETECTION STATIONS INCLUDING THE STATION WITH WHICH SAID FIRST RELAY MEANS IS ASSOCIATED AND A PRECEDING STATION IN SAID FIRST DIRECTION, SECOND RELAY MEANS OPERABLE FOR PROVIDING AN OUTPUT INDICATION OF AN AIRCRAFT TRAVELING IN SECOND DIRECTION OPPOSITE TO THE FIRST IN RESPONSE TO A SEQUENCE OF ACTUATIONS BY AN AIRCRAFT AT A SUCCESSION OF SAID DETECTION STATIONS INCLUDING THE STATION WITH WHICH SAID SECOND RELAY MEANS IS ASSOCIATED AND A PRECEDING STATION IN SAID SECOND DIRECTION, ALARM CIRCUIT MEANS, AND ADDITIONAL RELAY MEANS INCLUDING CIRCUITS CONTROLLED BY THE SEVERAL FIRST AND SECOND RELAY MEANS FOR THE SERIES OF DETECTION STATIONS FOR OPERATING SAID ALARM CIRCUIT MEANS IN RESPONSE ONLY TO CONCURRENT OPERATION OF SAID FIRST RELAY MEANS FOR ANY ONE OF SAID STATIONS AND ONE OF SAID SECOND RELAY MEANS FOR ANY OTHER OF SAID STATIONS SUCCEEDING SAID ONE STATION IN SAID FIRST DIRECTION.