REMOTE REPORTING SYSTEM

• US 3,441,929 A
• Filed: 12/30/1965
• Issued: 04/29/1969
• Est. Priority Date: 12/30/1965
• Status: Expired due to Term

• Current Assignee: Miller, Robert L., Shewan John, William E. Coffer
• Original Assignee: Miller, Robert L., Shewan John, William E. Coffer
• Inventors: Coffer, William E., Miller, Robert L., SHEWAN JOHN
• Application Number:
  US04/517,538
• Time in Patent Office: 1,216 Days
• US Class Current: 340/508
• CPC Class Codes: G08B 19/00 Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
• CPC Class Codes: G08B 25/00 Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems

Claims

1. A SYSTEM FOR DETECTING FAULTS AT A FIRST STATION AND REPORTING SAID FAULTS AT A REMOTE STATION COMPRISING:

A SOURCE OF EMF AT SAID REMOTE STATION, CONDUCTIVE MEANS COUPLING SAID SOURCE TO SAID FIRST STATION, RESISTIVE MEANS AT SAID FIRST STATION CONNECTED TO SAID CONDUCTIVE MEANS FOR SETTING A CURRENT IN SAID CONDUCTIVE MEANS TO A FIRST PREDETERMINED LEVEL, FIRST CURRENT-SENSING MEANS INCLUDING ALARM MEANS AT SAID REMOTE STATION RESPONSIVE TO SAID FIRST LEVEL OF CURRENT IN SAID CONDUCTIVE MEANS FOR GENERATING A SENSIBLE ALARM SIGNAL WHEN SAID CURRENT IN SAID CONDUCTIVE MEANS IS INTERRUPTED, A PLURALITY OF FAULT SENSING MEANS AT SAID FIRST STATION FOR DETECTING AT LEAST TWO DIFFERENT ALARM CONDITIONS THEREAT, SWITCHING MEANS AT