Power monitor

Details Power monitor Power monitor

2008-08-16

2011-12-20

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Reexamination Certificate

active

08080977

ABSTRACT:
A power monitor for indicating that a power outage has occurred is provided. The power monitor comprises an outer casing with a pair of electrical prongs extending from the outer casing. An AC relay is mounted within the outer casing and electrically connected to the prongs with the AC relay disconnecting when power is lost. A DC relay is mounted within the outer casing and electrically connected to the AC relay with the DC relay energized upon disconnection of the AC relay. A timer clock is mounted within the outer housing with the timer clock activated upon activation of the DC relay. A display screen is mounted on the outer casing for visually displaying the amount of time generated by the timer clock.

REFERENCES:
patent: 4973901 (1990-11-01), Balch
patent: 5568398 (1996-10-01), Trainor
patent: 6445163 (2002-09-01), Chenier et al.
patent: 2006/0232139 (2006-10-01), Mullin

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