Chiyoda Corporation

Toshitake Sakurai

Hiroaki Suzuki

Hidenori Muramatsu

Kingo Kasada

Keiichi Uchiyama

A working sheath tube () is used when a renovating operation of a pump-discharge pipe () branched from a peripheral wall () of a tubular barrel () inserted into a tank () in which a fuel is retained. The working sheath tube has a bottomed tubular shape which can be inserted into the barrel, and has a working space thereinside. A insertion hole () into which a closing member () for closing a pump-discharge pipe is inserted is provided on and penetrates a sheath tube peripheral wall (). While the sheath tube is inserted into the barrel, the insertion hole faces an opening of the pump-discharge pipe.

Growing community of inventors

Tokyo, Japan

Toshitake Sakurai