Makita Corporation

Masahiko Goto

Tomonobu Nashimoto

Takayoshi Endo

Kazuyuki Sakakibara

Masaaki Fukumoto

Kentaro Koura

Tsuyoshi Murayama

Tomonori Araki

A robot polisher has, in a box-shaped body part having a round shape in a plan view, right and left batteries, right and left wheel motors (not shown), and a pair of right and left wheels. The right and left wheel motors are rotationally driven by using the batteries as power supplies. The pair of right and left wheels can be individually rotated forward/backward by the respective wheel motors. On a lower housing, at the front-side lower part of the body part, a pair of right and left brushes are downwardly attached, which rotate in directions opposite to each other during traveling while being in sliding contact with a floor surface.

Robot polisher

A rechargeable battery type electric power tool is widely used for a construction work or a horticultural work. A battery of the electric power tool can also be used as a power source of an electric apparatus. Because of this construction, there is provided the electric apparatus that has a function equivalent to that of an AC power source type apparatus.

Electric apparatus

An 18V power tool having one 18V battery pack attachable thereto and a 36V power tool having two 18V battery packs attachable thereto are housed in a tool case and sold as a set or kit. Two or more battery packs and/or a charger may also be included in the set, and sold therewith. A tool case may be used to house and carry the power tools, as well as the battery packs and/or charger, if provided. Sales systems for selling such power tools are also disclosed.

Power tool and sales system therefor

An electric wheeled apparatus comprises a main body, at least one wheel supported by the main body in a rotatable manner; an electric motor configured to apply torque to the at least one wheel, a battery interface configured to removably receive at least one battery pack which is originally designed as a power source of an electric power tool, and an electric circuit unit configured to electrically connect the at least one battery pack attached to the battery interface with the electric motor.

Electric power mower

A power supply device includes battery interfaces configured to removably receive at least three batteries and a connection circuit configured to electrically connect the at least three batteries to each other. The connection circuit is capable of connecting at least two batteries in parallel and connecting at least one other battery to the at least two parallel-connected batteries in series. According to this power supply device, it is possible to supply high power to an electric device by connecting the batteries in series. In addition, it is possible to supply almost all of the electric power stored in the batteries to the electric device, even if amount of the remaining electric power in each battery is substantially uneven.

Power supply device

Electric wheeled apparatus

A battery charger includes telephone handset and a connector for connecting with a cellular phone. A sound signal can be transmitted between the telephone handset and the cellular phone via the connector.

Growing community of inventors

Anjo, Japan

Masahiko Goto