Telephone burglar alarm system with successive alarm signal transmission means

• US 3,188,392 A
• Filed: 02/09/1962
• Issued: 06/08/1965
• Est. Priority Date: 02/09/1962
• Status: Expired due to Term

• Current Assignee: Edward E. Ferrell
• Original Assignee: Edward E. Ferrell
• Inventors: Ferrell, Edward E.
• Application Number:
  US04/172,256
• Time in Patent Office: 1,215 Days
• US Class Current: 379/40
• CPC Class Codes: H04M 11/045 using recorded signals, e.g. speech

Claims

1. IN A TELEPHONE SUBSCRIBER STATION HAVING A TELEPHONE LINE CONNECTION TO A CENTRAL STATION, SAID CENTRAL STATION HAVING MEANS RESPONSIVE TO DIALING PULSES FROM SAID SUBSCRIBER STATION TO CONNECT SAID SUBSCRIBER STATION TO ANOTHER STATION, SIGNAL DETECTION MEANS FOR DERVING A SIGNAL IN RESPONSE TO THE OCCURRENCE OF A PREDETERMINED EVENT IN THE LOCALE OF SAID SUBSCRIBER STATION, FIRST MESSAGE REPRODUCING MEANS ACTUABLE IN RESPONSE TO SAID SIGNAL FOR TRANSMITTING RECORDED DIALING PULSES TO THE CENTRAL STATION WHEREBY SAID ANOTHER STATION RECEIVES RINGING PULSES, SECOND MESSAGE REPRODUCING MEANS ACTUATABLE AT A PREDETERMINED INTERVAL AFTER ACTUATION OF SAID FIRST MESSAGE REPRODUCING MEANS FOR TRANSMITTING A RECORDED VOICE SIGNAL TO SAID ANOTHER STATION, MEANS FOR RECYCLING INDEFINITELY THE SQUENCE OF TRANSMITTING SAID DIALING PULSES AND SAID VOICE SIGNALS IN THE EVENT OF NO RESPONSE AT SAID ANOTHER STATION TO SAID RINGING PULSES, SAID RECYCLING MEANS INCLUDIN AN ENDLESS TAPE LOOP HAVING A CONDUCTIVE STRIP LOCATED THEREON, CONTACT MEANS INCLUDING FIRST, SECOND AND THIRD CONTACTS LOCATED ADJACENT SAID ENDLESS TAPE LOOP FOR ENGAGEMENT WITH SAID CONDUCTIVE STRIP, SAID SECOND CONTACT BEING CONNECTED TO A SOURCE OF POWER, FIRST RELAY MEANS ENERGIZABLE WHEN SAID CONDUCTIVE STRIP BRIDGES SAID SECOND AND ANOTHER OF SAID CONTACT MEANS TO CONNECT SAID FIRST MESSAGE REPRODUCING MEANS FROM THE TELEPHONE LINE, SECOND RELAY MEANS ENERGIZABLE TO DISCONNECT SAID FIRST MESSAGE REPRODUCING MEANS FROM THE TELEPHONE LINE AND TO SIMULTANEOULY CONNECT SAID SECOND MESSAGE REPRODUCING MEANS TO SAID TELEPHONE LINE, SAID RECYCLING MEANS FURTHER INCLUDING A RELAY TIMING CIRCUIT THE TIMING INTERVAL OF WHICH IS INITIATED RESPONSIVE TO THE ENERGIZATION OF SAID SECOND RELAY MEANS, THE RELAY OF SAID RELAY TIMING CIRCUIT BEING ENERGIZED TO DISCONNECT SAID FIRST AND SECOND RELAY MEANS AT THE END OF SAID TIMING INTERVAL, WHEREBY SAID SEQUENCE OF ENERGIZATION OF SAID FIRST AND SAID SECOND RELAY MEANS MAY BE REPEATED RESPONSIVE TO ENGAGEMENT OF SAID CONDUCTIVE STRIP WITH SAID CONTACT MEANS, AND MEANS AT SAID SUBSCRIBER STATION RESPONSIVE TO A TONE SIGNAL RECEIVED FROM SAID ANOTHER STATION FOR DE-ENERGIZING BOTH MESSAGE REPRODUCING MEANS AT SAID SUBSCRIBER STATION.