Tokyo Gas Company Limited

Ashimori Industry Co., Ltd.

Ashimori Kogyo Kabushiki Kaisha

Hideo Maruyama

Isaburo Yagi

Akio Morinaga

Akifumi Yamamoto

Masaru Yamakawa

Yoshifumi Osaka

Boring device for lining material in branched portions of lined conduit

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.

Apparatus for lining pipe lines including liquid seal means

Method for lining pipe lines with a pressurized gas

Growing community of inventors

Osaka, Japan

Hideo Maruyama