Monitoring alarm system

Details Monitoring alarm system Monitoring alarm system

1976-08-17

1978-05-23

Waring, Alvin H.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340248B, G08B 1322

Patent

active

040913848

ABSTRACT:
An alarm system, including a first station at a site to be monitored, and a second station at a site for monitoring the first station, and phone lines inter-connecting the first and second stations. First and second alarm control assemblies are provided in the first station responsive to different alarm initiating conditions. A first indicator in the second station indicates a first alarm condition by a first mode of operation thereof, and indicates a second alarm condition by a second mode of operation thereof. A second indicating means in the second station indicates a third alarm condition by a mode of operation thereof. First circuitry connected to the phone lines effects energization of the second-indicating means should the voltage of the phone lines be lost, and second circuitry connected to the phone lines effects operation of the first indicator in the first mode thereof in response to actuation of the first alarm control assembly and effects operation of the first indicator in the second mode thereof, in response to actuation of the second alarm control system. A switch in the second station is utilized for resetting portions of the second circuitry which effect operation of the first indicator in the first mode thereof, and the switch also controls actuation of a load at the first station whether or not the first alarm control system is actuated. A third indicator, such as a sonic indicator, also is actuated when either of the first or second indicators are actuated, and circuitry is provided for silencing the sonic alarm once the alarm has been recognized.

REFERENCES:
patent: 3369079 (1968-02-01), Glidden
patent: 3412392 (1968-11-01), Jenkins et al.
patent: 3449737 (1969-06-01), Stewart
patent: 3488650 (1970-01-01), Muchnick
patent: 3544986 (1970-12-01), Earling et al.
patent: 3573780 (1971-04-01), Butterbaugh
patent: 3707708 (1972-12-01), Dan
patent: 3757323 (1973-09-01), Pintell
patent: 3767867 (1973-10-01), Altenberger
patent: 3882278 (1975-05-01), Coll
patent: 3924254 (1975-12-01), Klebold et al.

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