H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 9/02 (2006.01) B25B 21/00 (2006.01) B25F 5/00 (2006.01) H02K 7/14 (2006.01)
Patent
CA 2541652
A cordless power tool uses a lithium battery as a power source of a motor and is provided with an overcurrent protection circuit. The circuit allows an overcurrent to instantaneously flow at the start-up time of the motor and shuts off an overcurrent which may flow when the motor is brought into a locked state during the use of the power tool.
Aradachi Takao
Funabashi Kazuhiko
Hanawa Hiroyuki
Ogura Masayuki
Hitachi Koki Co. Ltd.
Riches Mckenzie & Herbert Llp
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