Patents by Inventor Kazuyoshi Ishisaka

Kazuyoshi Ishisaka 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).

  • Actuator for controlling intake pressure in sequential turbo-system
    Patent number: 5063744
    Abstract: In a sequential turbocharger system having a first stage large volume turbo-charger and a second stage small volume turbocharger, a diaphragm actuator is provided for an exhaust bypass valve bypassing a turbine of the small volume turbocharger. The diaphragm actuator has a two step characteristic in relation to an opening of the exhaust bypass valve, so that an increased speed of opening of the exhaust bypass valve is obtained when the pressure downstream of the compressor of the first turbocharger is equal to the pressure downstream of the compressor of the second turbocharger.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: November 12, 1991
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisen Industry Co., Ltd.
    Inventors: Shinobu Ishiyama, Teruo Kumai, Kazuyoshi Ishisaka, Toshiyuki Maehara, Makoto Fujimori, Kimio Nemoto