Energy source monitoring and control system
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United States of America Patent
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Aug 25, 2009
Grant Date -
Mar 6, 2008
app pub date -
May 1, 2007
filing date -
Sep 6, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An energy source monitoring system evaluates the state of an energy source and responsively controls a power tool or other device. The energy source may be a power tool battery pack that includes multiple individual battery packs connected in series. The energy source monitoring system may be incorporated into a power tool, screwdriver, flashlight, audio and/or video player, or any other device. The energy source monitoring system intelligently exercises control over the power applied to the device. In one implementation, the energy source monitoring system detects when voltages in the energy source have fallen below a cutoff level, yet allows the device to continue running until the operator finishes the current device operation.
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