Makita Corporation

Toshiyasu Kasuya

Tatsuki Mori

Hitoshi Suzuki

Kazuyuki Sakakibara

Junichi Masuda

Hideyuki Taga

Takuya Umemura

Kiyozumi Kokawa

Toshio Matsumoto

Hideki Watanabe

Hiroki Oka

An electric device in one aspect of the present disclosure comprises a connector, a power supply unit, a connection-detection unit, and a control unit. The control unit is configured to control electric power supplied to the power supply unit from a battery so as to increase electric power supplied to the power supply unit when the connection-detection unit detects that an external device is connected to the connector.

Electric device and method of controlling the same

A system for charging a power tool battery includes a charging device capable of charging a battery, a memory device capable of storing data of a plurality of sound patterns, a selecting device capable of selecting a sound pattern data from the plurality of sound patterns, and a sound generating device capable of generating a sound based on the selected sound pattern data when the charging operation of the battery by the charging device has been completed.

Battery charging systems

Battery charger

A battery charging system is disclosed for charging two different types of battery packs, a known three terminal type including batteries and a thermostat switch, and a newer four terminal type further including a thermistor for sensing battery temperature. A charging control circuit stops charging current to the battery pack when a contact of the thermostat switch is open or when the thermistor detects a temperature above a predetermined temperature. If either the thermostat switch or the thermistor fail to properly operate, charging current to the battery pack is stopped securely to avoid damaging batteries.

Battery charger detecting full charge of batteries using a thermostat

Growing community of inventors

Anjo, Japan

Toshiyasu Kasuya