Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – Having variable number of cells or batteries in series
Reexamination Certificate
2008-03-26
2009-10-13
Ullah, Akm E (Department: 2838)
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
Having variable number of cells or batteries in series
C320S134000, C320S137000, C320S116000
Reexamination Certificate
active
07602146
ABSTRACT:
In a cordless power tool system, protection methods, circuits and devices are provided to protect against fault conditions within a battery pack that is operatively attached to a power tool or charger, so as to prevent internal or external damage to the battery pack or attached tool or charger. The exemplary methods, circuits and devices address fault conditions such as over-charge, over-discharge, over-current, over-temperature, etc.
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Bailey R. Roby
Brotto Daniele C.
Carrier David A.
Francis Jeffrey J.
Phillips Steven J.
Black & Decker Inc.
Boateng Alexis
Harness & Dickey & Pierce P.L.C.
Ullah Akm E
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