SECURITY SYSTEM

• US 3,601,540 A
• Filed: 02/14/1969
• Issued: 08/24/1971
• Est. Priority Date: 02/14/1969
• Status: Expired due to Term

• Current Assignee: Mcneil Bryan
• Original Assignee: Mcneil Bryan
• Inventors: Bryan, McNeil
• Primary Examiner(s): Claffy, Kathleen H.
• Assistant Examiner(s): Amico, Tom D'
• Application Number:
  US04/799,382
• Time in Patent Office: 921 Days
• Field of Search: 179/5,9B,9BB,9BD,9ADO,9CI 340/213,214,225,248,253
• US Class Current: 379/40
• CPC Class Codes: H04M 11/045 using recorded signals, e.g. speech

Abstract

A plurality of burglar and fire sensors and emergency switches connected to relays for providing output signals upon activation of one of the sensors or switches, which signals activate a desired tape recording that dials a remotely located telephone and provides a voice message thereon. The system includes circuitry which energizes indicators upon the occurrence of internal trouble therein. The system further includes a selfcontained power source which automatically switches from line to internal batteries and means for delaying recorded telephone dialing pulses to reduce errors in dialing due to momentary failures of the system.

Claims

1. A security system comprising:

a. condition responsive means;

b. relay means;

c. electrical circuitry connecting said condition responsive means to said relay means for operating said relay means and supplying an output signal upon the occurrence of a condition;

d. memory means including electronic circuitry for supplying predetermined signals at an output upon the occurrence of a signal at an input, said predetermined signals including telephone dialing pulses and voice messages;

e. means connecting the output signals of said relay means to the input of said memory means; and

f. circuitry for continually monitoring the correct operation of substantial portions of the system and for providing an indication of a failure therein said monitoring circuitry including an oscillator connected to the electronic circuitry for monitoring said electronic circuitry and providing a predetermined indication when a failure occurs therein.

2. A security system as set forth in claim 1 wherein the relay means includes at least two electrical relays and the connecting electrical circuitry includes a two-wire loop connecting at least some of the condition responsive means to said two relays for operating one of said relays when at least one of said condition responsive means produces a short circuit between the two wires and operating the other of said relays upon the occurrence of a break in one of the two wires.