Power outage timer

Details Power outage timer Power outage timer

1981-09-18

1984-08-14

Krass, Errol A.

Boots, shoes, and leggings

307200A, 364145, 364184, 364483, 364707, G04F 1000

Patent

active

044660740

ABSTRACT:
The power outage timer (36, 136, or 236) forms a part of an electronic watt-hour meter (10) having a microprocessor (22), a real time value memory and a real time clock signal input from a voltage supply (23). The power outage timer (36, 136, or 236) is coupled to the microprocessor (22) for generating a signal when, after a power outage, power is restored, such signal being indicative of the time duration of the power outage and being input to the microprocessor (22) so that the microprocessor (22) can update the real time value in an EAROM (32) to reflect the correct real time.

REFERENCES:
patent: 2269603 (1942-01-01), Rockwood
patent: 2454191 (1948-11-01), MacDonald
patent: 3790890 (1974-02-01), Doittau
patent: 3887850 (1975-06-01), Sterff
patent: 4011927 (1977-03-01), Smith
patent: 4099068 (1978-07-01), Kobayashi
patent: 4260907 (1981-04-01), Winebarger
patent: 4293915 (1981-10-01), Carpenter

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