Benkan Corporation

Kenkan Corporation

Minoru Sunaga

Shigeyuki Matsumoto

Masao Kanazawa

Mitsuaki Motoda

Yasuo Yabe

Tsuneyoshi Shibata

Kenji Fuse

Kenji Miyatani

Nobuhisa Fukuda

Yasumi Maruhashi

Yasuyoshi Maruhashi

A pipe joint for connecting water supply pipe together and which utilizes compression seals between the pipe and the joint, and is comprised of a holding housing having a band body that surround a seal ring and a holding ring. A locking bolt is threadably tightened onto the holding housing. The seal ring is embedded and sealed within outside surface of both ends of the separated pipes after the locking bolt is threadably tightened. The holding ring is positioned to engage and become fully engaged within the groove at each of outside of the separated pipes, and hold the separation pipes against being easily separated after the locking bolt is threadably tight-end onto the holding housing. The ring spring having a turned up portion eliminate swell out of the holding ring from the holding housing, and circumference rotation by itself. The ring expander creatable enlargement of circumference clearance between adjacent segment of the holding ring allowed the diameter enlargement of the holding ring against compress force of the ring spring. The setting member maintainable diameter enlargement of the holding ring after removal of the ring expander is at ease of prior to installing of the pipe joint for connecting the separated pipes.

Pipe joint

A pipe joint for connecting water supply pipe together and which utilizes compression seals between the pipe and the joint, and is comprised of a holding housing having a band body that surround a seal ring and a holding ring. A locking bolt is threadably tightened onto the holding housing. The seal ring is embedded and sealed within outside surface of both ends of the separated pipes after the locking bolt is threadably tightened. The holding ring is positioned to engage and become fully engaged within the groove at each of outside of the separated pipes, and hold the separation pipes against being easily separated after the locking bolt is threadably tight-end onto the holding housing.

Growing community of inventors

Tokyo, Japan

Minoru Sunaga