Patents by Inventor Isao Yasuma

Isao Yasuma 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).

  • Intake device for internal combustion engine
    Patent number: 7328692
    Abstract: According to one aspect of the invention, there is provided an intake device for an internal combustion engine, including a gas passage unit defining therein a secondary gas supply passage for supplying a secondary gas to an intake of the engine, and a thermal insulator disposed over at least one side of the gas passage unit so as to thermally insulate the secondary gas supply passage.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: February 12, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Katsuyuki Nakamura, Shigekazu Fuji, Isao Yasuma
  • Intake arrangement for internal combustion engine
    Patent number: 6994065
    Abstract: An intake arrangement for an internal combustion engine, including an intake manifold including an intake collector and a plurality of branch pipes connected with the intake collector. The branch pipes extend in substantially same direction. The intake collector includes an inlet opening through which an intake air flow is introduced into the intake collector, and branch openings to which branch pipes are connected. The branch openings are arranged along a longitudinal direction of the intake collector such that as a distance thereof from the inlet opening decreases, an amount of offset thereof from a reference streamline of the intake air flow extending through substantially a center of the inlet opening along the longitudinal direction of the intake collector increases.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: February 7, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Shigeki Uchiyama, Kenichi Sakuraba, Koji Yamashita, Katsuyuki Nakamura, Toshiya Arai, Ikuhiro Imai, Isao Yasuma
  • Intake device for internal combustion engine
    Publication number: 20050076892
    Abstract: According to one aspect of the invention, there is provided an intake device for an internal combustion engine, including a gas passage unit defining therein a secondary gas supply passage for supplying a secondary gas to an intake of the engine, and a thermal insulator disposed over at least one side of the gas passage unit so as to thermally insulate the secondary gas supply passage.
    Type: Application
    Filed: October 8, 2004
    Publication date: April 14, 2005
    Inventors: Katsuyuki Nakamura, Shigekazu Fuji, Isao Yasuma
  • Intake arrangement for internal combustion engine
    Publication number: 20050076873
    Abstract: An intake arrangement for an internal combustion engine, including an intake manifold including an intake collector and a plurality of branch pipes connected with the intake collector. The branch pipes extend in substantially same direction. The intake collector includes an inlet opening through which an intake air flow is introduced into the intake collector, and branch openings to which branch pipes are connected. The branch openings are arranged along a longitudinal direction of the intake collector such that as a distance thereof from the inlet opening decreases, an amount of offset thereof from a reference streamline of the intake air flow extending through substantially a center of the inlet opening along the longitudinal direction of the intake collector increases.
    Type: Application
    Filed: October 7, 2004
    Publication date: April 14, 2005
    Inventors: Shigeki Uchiyama, Kenichi Sakuraba, Koji Yamashita, Katsuyuki Nakamura, Toshiya Arai, Ikuhiro Imai, Isao Yasuma