Patents by Inventor Tomoaki Hirooka

Tomoaki Hirooka 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 fitting and assembly using such pipe fittings
    Patent number: 7341391
    Abstract: A pipe fitting of the present invention comprises a combination of a plurality of split fittings and has a central cylinder and an extended cylinder which outwardly projects from the central cylinder, the central cylinder and the extended cylinder being capable of receiving pipes from orthogonal directions with respect to each other. The extended cylinder includes a bolt hole which locates near the central cylinder and which penetrates the extended cylinder. The central cylinder has an aperture provided in a side surface thereof. Each split fitting is fixed on the pipes by a bolt and nut via the respective bolt hole.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: March 11, 2008
    Assignees: Sekisui Jushi Kabushiki Kaisha, Takiron Co., Ltd.
    Inventors: Hiroyuki Nakahori, Tomoaki Hirooka
  • Pipe joint, and assembly using the pipe joint
    Publication number: 20040101354
    Abstract: A pipe fitting of the present invention comprises a combination of a plurality of split fittings and has a central cylinder and an extended cylinder which outwardly projects from the central cylinder, the central cylinder and the extended cylinder being capable of receiving pipes from orthogonal directions with respect to each other. The extended cylinder includes a bolt hole which locates near the central cylinder and which penetrates the extended cylinder. The central cylinder has an aperture provided in a side surface thereof. Each split fitting is fixed on the pipes by a bolt and nut via the respective bolt hole.
    Type: Application
    Filed: January 13, 2003
    Publication date: May 27, 2004
    Inventors: Hiroyuki Nakahori, Tomoaki Hirooka