Patents by Inventor Shigeharu Ohyagi

Shigeharu Ohyagi 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).

  • Pulse detonation engine system for driving turbine
    Patent number: 7367194
    Abstract: A pulse detonation engine system (1) for driving a turbine is comprises a detonation generator section (5) including a detonation tube (7) having a tubular hollow section for permitting detonation to be generated therein during combustion stage of a mixture gas combined with a gas and a fuel, a gas supply section (17) for feeding the gas into the tubular hollow section of the detonation tube (7) at given time intervals, a fuel valve (19) for feeding the fuel into the tubular hollow section of the detonation tube (7) at the given time intervals, and an ignition plug (15) for igniting the mixture gas in the tubular hollow section of the detonation tube (7), and a pulse detonation driven turbine (9) driven directly or indirectly by energy of detonations that are intermittently generated in the tubular hollow section of the detonation tube (7).
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: May 6, 2008
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Motohide Murayama, Shigemichi Yamawaki, Hidemi Toh, Hideo Kobayashi, Katsuyoshi Takahashi, Kaoru Chiba, Shigeharu Ohyagi
  • Pulse detonation engine system for driving turbine
    Publication number: 20050210879
    Abstract: A pulse detonation engine system (1) for driving a turbine is comprises a detonation generator section (5) including a detonation tube (7) having a tubular hollow section for permitting detonation to be generated therein during combustion stage of a mixture gas combined with a gas and a fuel, a gas supply section (17) for feeding the gas into the tubular hollow section of the detonation tube (7) at given time intervals, a fuel valve (19) for feeding the fuel into the tubular hollow section of the detonation tube (7) at the given time intervals, and an ignition plug (15) for igniting the mixture gas in the tubular hollow section of the detonation tube (7), and a pulse detonation driven turbine (9) driven directly or indirectly by energy of detonations that are intermittently generated in the tubular hollow section of the detonation tube (7).
    Type: Application
    Filed: February 10, 2004
    Publication date: September 29, 2005
    Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Motohide Murayama, Shigemichi Yamawaki, Hidemi Toh, Hideo Kobayashi, Katsuyoshi Takahashi, Kaoru Chiba, Shigeharu Ohyagi