Power supply for clock
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United States of America Patent
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Jan 8, 2013
Grant Date -
Aug 9, 2012
app pub date -
Feb 9, 2011
filing date -
Feb 9, 2011
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A line current power supply delivers operating current to a clock designed to be powered by a conventional electrochemical cell disposed in a power source compartment within the clock housing, and at the same time supplies recharging current to a rechargeable electrochemical cell for powering the clock in the absence of an external power supply. The rechargeable cell is contained within a cylindrical enclosure having a shape such that it can fit into the power source compartment of the clock, and having contacts allowing it to be substituted for the conventional electrochemical power source.
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