Tokyo Gas Company Limited

Ashimori Industry Co., Ltd.

Akifumi Yamamoto

Akio Morinaga

Isaburo Yagi

Hideo Maruyama

Method and apparatus for lining pipe lines, especially those buried in the ground and having a large diameter, according to the so-called evagination-lining technique by using a compressed gas as a pressurized fluid, which is so improved as to secure complete sealing of a pressure container for inserting the lining material into a pipe line by using a specific sealing device using a liquid in place of a mechanical sealing device while preventing a binder applied onto the inner surface of the lining material from being squeezed backwards when the lining material is introduced into the pressure container.

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Takatsuki, Japan

Akifumi Yamamoto