Ibiden Company Limited

Ibigawa Electric Industry Co., Ltd.

Ibiden Kosan Co., Ltd.

Takayuki Mizutani

Haruo Yasuda

Kunihiko Yoshida

Yasuro Iwai

Naruo Kuwabara

Toshio Kozima

Method and Apparatus for using successively joined carbon electrodes (that are not coated with a metal) shaped with a projection at one end and a socket at the other end. In order for the user to know the existing length of the electrode performing the gouging this electrode is marked with a notch, ink or material which changes its color at elevated temperatures at 80 mm, 60 mm, and 40 mm.

Joinable arc gouging electrodes with indicator for indicating, during

A carbon rod assembly is disclosed which includes a first carbon rod piece having a projection at one end thereof and a second carbon rod piece having a socket hole at one end thereof. External and internal screw threads of 1/2 to 3 turns are formed on the projection and socket hole respectively, so that the first and second carbon rod pieces are firmly connected by inserting the projection into the socket hole and thereafter rotating the carbon rod pieces relative to each other.

Carbon rod assembly for arc gouging and blasting of metallic article

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Yoro, Japan

Takayuki Mizutani