Patents by Inventor Junji TORISHIMA

Junji TORISHIMA 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).

  • Exhaust gas recirculation valve
    Patent number: 9376988
    Abstract: In an EGR valve, a valve element is moved with respect to a valve seat to adjust a passage section width of a measuring section, thereby regulating an EGR gas flow rate in a passage. The valve seat includes a valve hole, a first end face facing to a downstream side of the passage and a second end face facing to an upstream side of the passage. The inner circumferential surface of the valve hole has a concave curved shape with an inner diameter gradually increasing toward the second end face. The valve element is placed inside the valve hole to be movable in between a fully closed position and a fully open position. While the valve element is placed in the fully open position, passage section widths of parts of the measuring section in an EGR gas flow direction are approximate to each other.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: June 28, 2016
    Assignees: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Asanuma, Yoshimasa Ito, Kazumasa Nakashima, Takashige Inagaki, Tomoyuki Noguchi, Takashi Tomita, Junji Torishima, Taro Furukubo
  • EXHAUST GAS RECIRCULATION VALVE
    Publication number: 20140158098
    Abstract: In an EGR valve, a valve element is moved with respect to a valve seat to adjust a passage section width of a measuring section, thereby regulating an EGR gas flow rate in a passage. The valve seat includes a valve hole, a first end face facing to a downstream side of the passage and a second end face facing to an upstream side of the passage. The inner circumferential surface of the valve hole has a concave curved shape with an inner diameter gradually increasing toward the second end face. The valve element is placed inside the valve hole to be movable in between a fully closed position and a fully open position. While the valve element is placed in the fully open position, passage section widths of parts of the measuring section in an EGR gas flow direction are approximate to each other.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 12, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Hiroshi ASANUMA, Yoshimasa ITO, Kazumasa NAKASHIMA, Takashige INAGAKI, Tomoyuki NOGUCHI, Takashi TOMITA, Junji TORISHIMA, Taro FURUKUBO