Power use alarm

Details Power use alarm Power use alarm

1977-04-28

1978-11-28

Yusko, Donald J.

Communications: electrical

Digital comparator systems

325 64, 325364, H04B 700, H04Q 912, H04J 300

Patent

active

041278526

ABSTRACT:
A power use peak load alarm system which is triggered by a specific combination of audio tones received by way of a fixed tuned AM or FM receiver located in the user's facility. The receiver is equipped with a filtering system to reduce the probability of false triggering. Upon receipt of the alarm signal, the alarm system goes into an alarm condition consisting of a visual alarm and an audio alarm. The visual alarm consists of a blinking alarm light while the audio alarm provides full output volume at the receiver for receipt of an alarm message or other audible alarm signal. The received alarm signal will initiate a timer circuit which will hold the receiver in an alarm condition for a preset time interval. During the alarm interval, certain relay contacts are made which may be connected to turn off non-essential electrical equipment or switch to a dual register/dual rate meter or both.

REFERENCES:
patent: 3521168 (1970-07-01), Kaiser et al.
patent: 3596181 (1971-07-01), Dowling et al.
patent: 3723876 (1973-03-01), Seaborn, Jr.
patent: 3803491 (1974-04-01), Osborn
patent: 3860913 (1975-01-01), Weeks, Jr., et al.
patent: 3949401 (1976-04-01), Hegeler et al.
patent: 3980954 (1976-09-01), Whyte
patent: 3993955 (1976-11-01), Belcher et al.
patent: 4021615 (1977-05-01), James et al.

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