Hozan Tool Industrial Co., Ltd.

Osaka University

Ryuhei Okuno

Saburo Sakoda

Kenzo Akazawa

An electric soldering iron is made difficult to heat up at the front end of its grip. A metal pipe is inserted in the grip so that the pipe comes into close contact at least partially with the grip, with a gap formed between the outer peripheral surface of the pipe at its front end and the inner peripheral surface of the grip. The heat produced by the accumulator conducts through the pipe to the grip and disperses throughout the grip. Thus, the front end of the grip is less likely to heat up.

Growing community of inventors

Osaka, Japan

Ryuhei Okuno