Patents by Inventor Yoshikazu Ushijima

Yoshikazu Ushijima 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).

  • Patent number: 8544123
    Abstract: A flush toilet device has a toilet body having a bowl section, rim water discharge opening, a jet water discharge opening, and a discharge water trap conduit. A pressurizing pump is provided for pressurizing flush water contained in a cistern to supply it to the jet water discharge opening. A pump controller regulates the operation and rotation speed of the pressurizing pump to regulate the flow speed and flow rate of flush water discharged from the jet water discharge opening so that flush water at a first flow rate for generating a siphon effect is discharged and then at a second flow rate is discharged at the end of the siphon effect generated by the first flow rate. The second flow rate having a flow speed that can carry away human wastes and causes the siphon effect to continue by closing the cross section of any portion of the discharge water trap conduit.
    Type: Grant
    Filed: December 25, 2007
    Date of Patent: October 1, 2013
    Assignee: Toto Ltd.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi, Shinji Shibata
  • Patent number: 8418277
    Abstract: A flush toilet in which an appropriate amount of water is supplied and that can be installed in an area where water pressure is low.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: April 16, 2013
    Assignee: Toto Ltd.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi, Ayako Harada
  • Patent number: 8281424
    Abstract: A flush toilet for prevention of reverse flow and uses a reduced number of parts. The flush toilet includes a toilet body having a bowl, a rim water outlet, a jet water outlet, and a discharge water trap piping; a water storage tank. A flush water supply mechanism is provided for supplying flush water to the rim water outlet and the water storage tank and a pressurizing pump pressurizes the flush water in the water storage tank. A jet-side water supply path supplies the pressurized flush water to the jet water outlet. An overflow path is provided having a lower end connected to the downstream side of the highest position of the jet-side water supply path and an upper end opened in the upper part in the water storage tank with a flapper valve provided in the overflow path.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: October 9, 2012
    Assignee: Toto Ltd.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi
  • Publication number: 20100132105
    Abstract: The present invention provides a flush toilet for simplifying structures used for backflow prevention and the like, and for reducing the number of parts.
    Type: Application
    Filed: June 27, 2008
    Publication date: June 3, 2010
    Applicant: TOTO Ltd.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi
  • Publication number: 20100077544
    Abstract: A flush toilet in which an appropriate amount of water is supplied and that can be installed in an area where water pressure is low.
    Type: Application
    Filed: August 29, 2007
    Publication date: April 1, 2010
    Applicant: TOTO LTD.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi, Ayako Harada
  • Publication number: 20090313750
    Abstract: A flush toilet device has a toilet body having a bowl section, rim water discharge opening, a jet water discharge opening, and a discharge water trap conduit. A pressurizing pump is provided for pressurizing flush water contained in a cistern to supply it to the jet water discharge opening. A pump controller regulates the operation and rotation speed of the pressurizing pump to regulate the flow speed and flow rate of flush water discharged from the jet water discharge opening so that flush water at a first flow rate for generating a siphon effect is discharged and then at a second flow rate is discharged at the end of the siphon effect generated by the first flow rate. The second flow rate having a flow speed that can carry away human wastes and causes the siphon effect to continue by closing the cross section of any portion of the discharge water trap conduit.
    Type: Application
    Filed: December 25, 2007
    Publication date: December 24, 2009
    Applicant: TOTO LTD.
    Inventors: Mayu Okubo, Yoshikazu Ushijima, Yuichi Sato, Yoshinobu Kato, Ryosuke Hayashi, Shinji Shibata