Sekisui Kagaku Kogyo Kabushiki Kaisha

Rib Loc Australia Pty Ltd.

Masahisa Sonku

Minoru Yasuhara

Yukio Yoshimura

Hirozo Hirayama

Naoki Kitahashi

Harutoshi Miyazaki

Hisaichi Oi

Shigeki Fujii

Rehabilitating underground pipes with expanding helically wound liner

Method of drilling a branch line aperture after internal lining of a

A steel or concrete liquid tank body 1 has an adhesively secured internal cushioning layer of rubber sheets 2 underlying an adhesively secured lining of corrosion resistant synthetic resin sheets 4. The angular tank body corners are provided with triangular rubber strips 3 to contour the lining sheets and avoid stress concentrations. The overlapping glued and welded joints a between adjacent resin sheets 4 are staggered or offset with respect to the mitered joints b between adjacent rubber sheets, and the corners of the interior of the joints a are spaced from the tank.

Anticorrosive liquid tank with offset lining joints

Growing community of inventors

Hikone, Japan

Masahisa Sonku