Hitachi Koki Co., Ltd.

Juurou Kobayashi

Takuhiro Murakami

Hiroto Inagawa

Mitsuo Ogura

Yoshikazu Yokoyama

Junichi Kamimura

Mitsuyuki Ishikawa

Satsuo Sato

Naoya Eto

Yoshimitsu Kawasaki

Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission keycomposed of high-strength plastic is provided between an output shaftand a gearand a plane or a V-groove is formed on each of the output shaftand the gearcontacting the power transmission key

Electric power tool

Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key composed of high-strength plastic is provided between an output shaft and a gear , and a plane or a V-groove is formed on each of the output shaft and the gear contacting the power transmission key

Growing community of inventors

Hitachinaka, Japan

Juurou Kobayashi