Patents by Inventor Tsuneyoshi Shibata

Tsuneyoshi Shibata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pipe joint
    Patent number: 5722695
    Abstract: 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.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: March 3, 1998
    Assignee: Kenkan Corporation
    Inventors: Shigeyuki Matsumoto, Yasuo Yabe, Kenji Fuse, Yasuyoshi Maruhashi, Mitsuaki Motoda, Kenji Miyatani, Tsuneyoshi Shibata, Masao Kanazawa, Minoru Sunaga, Nobuhisa Fukuda
  • Pipe joint
    Patent number: 5658021
    Abstract: 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.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: August 19, 1997
    Assignee: Benkan Corporation
    Inventors: Shigeyuki Matsumoto, Yasuo Yabe, Tsuneyoshi Shibata, Masao Kanazawa, Minoru Sunaga, Nobuhisa Fukuda, Kenji Fuse, Yasumi Maruhashi, Mitsuaki Motoda, Kenji Miyatani