Telephone alarm reporting system

• US 3,120,579 A
• Filed: 05/28/1962
• Issued: 02/04/1964
• Est. Priority Date: 05/28/1962
• Status: Expired due to Term

• Current Assignee: John H. Stewart
• Original Assignee: John H. Stewart
• Inventors: Stewart, John H.
• Application Number:
  US04/198,241
• Time in Patent Office: 617 Days
• US Class Current: 379/39
• CPC Class Codes: H04M 11/04 with alarm systems, e.g. fire, police or burglar alarm systems

Claims

1. IN A TELEPHONE SYSTEM, A SUBSCRIBER'"'"''"'"'S STATION, A CENTRAL OFFICE, A TELEPHONE SET PROVIDED WITH PULSING MEANS AT SAID SUBSCRIBER'"'"''"'"'S STATION, A FIRST PATH AND A SECOND PATH AT SAID CENTRAL OFFICE, MEANS EFFECTIVE UPON CLOSURE OF THE LINE LOOP THROUGH SAID TELEPHONE SET FOR ESTABLISHING A CONNECTION BETWEEN SAID SUBSCRIBER'"'"''"'"'S STATION AND SAID CENTRAL OFFICE, MEANS EFFECTIVE UPON SAID CLOSED LOOP REMAINING UNINTERRUPTED BY SAID PULSING MEANS FOR A WAITING INTERVAL OF A PREDETERMINED, DEFINITE EXTENT FOR ROUTING THE CONNECTION TO SAID FIRST PATH, MEANS AT SAID SUBSCRIBER'"'"''"'"'S STATION FOR INDICATING AN ABNORMAL ALARM CONDITION, MEANS EFFECTIVE UPON OPERATION OF SAID INDICATING MEANS FOR REDUCING THE EXTENT OF THE WAITING INTERVAL, AND MEANS EFFECTIVE DURING THE REDUCED WAITING INTERVAL FOR ROUTING THE ALARM CONDITION INDICATION TO SAID SECOND PATH.