Fault detection and signaling system

Details Fault detection and signaling system Fault detection and signaling system

1974-06-10

1976-03-02

Caldwell, John W.

Communications: electrical

Systems

Call station

340326, 340415, G08B 2500, H04Q 900

Patent

active

039421660

ABSTRACT:
A fault detection and signaling system is responsive to a fault detection to generate a first type of warning signal indicative of fault detection and includes means operable to indicate that a fault is "acknowledged" and for causing the generation of a second type of warning signal if the fault still exists and to cause ceasing of generation of the first type of warning signal if the fault no longer exists. Further provided is means responsive to fault detection by another fault detection and signaling system for causing generation of a third type of warning signal when a fault is indicated by the present system subsequent to a fault detection by another system.

REFERENCES:
patent: 3193814 (1965-07-01), Foster
patent: 3480938 (1969-11-01), Martin
patent: 3537089 (1970-10-01), Lee
patent: 3550121 (1970-11-01), Porter
patent: 3550122 (1970-12-01), Siddiqi
patent: 3582925 (1971-06-01), Porter
patent: 3641539 (1972-02-01), Lesher
patent: 3686654 (1972-08-01), Judlowe

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