POWER SUPPLY DEVICE
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United States of America Patent
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Issued Date -
Jan 9, 2014
app pub date -
Jul 3, 2013
filing date -
Jul 7, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A power supply device comprising: a plurality of battery units each having a protective unit, an output voltage from the plurality of battery units being configured to energize an electric power tool; and a drive-limiting unit provided in a current path of the battery unit of each row, wherein each protective unit stops energization from the battery unit of its row by the drive-limiting unit provided in the current path of the battery unit of its row, when the battery unit of its row has an error.
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