Patents by Inventor Tetsuo Tabata

Tetsuo Tabata 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).

  • Device for preventing the turbo-charger from over-running
    Patent number: 6886335
    Abstract: A device for preventing the turbo-charger from over-running, wherein an actuator is arranged in a by-pass bypassing a turbine of the turbo-charger and operates a waste gate valve. The actuator has a positive pressure chamber communicated, via a boost pipe, with an intake air passage downstream of a compressor and a negative pressure chamber communicated with a source of negative pressure via a negative pressure pipe. The negative pressure chamber is so constituted as to be supplied with a negative pressure to have a target pressure that is set relative to the atmospheric pressure.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: May 3, 2005
    Assignee: Isuzu Motors Limited
    Inventors: Tetsuo Tabata, Naohito Metoki, Takayuki Tazawa, Kenji Hagio
  • Device for preventing the turbo-charger from over-running
    Publication number: 20040098985
    Abstract: A device for preventing the turbo-charger from over-running, wherein an actuator is arranged in a by-pass bypassing a turbine of the turbo-charger and operates a waste gate valve. The actuator has a positive pressure chamber communicated, via a boost pipe, with an intake air passage downstream of a compressor and a negative pressure chamber communicated with a source of negative pressure via a negative pressure pipe. The negative pressure chamber is so constituted as to be supplied with a negative pressure to have a target pressure that is set relative to the atmospheric pressure.
    Type: Application
    Filed: November 18, 2003
    Publication date: May 27, 2004
    Inventors: Tetsuo Tabata, Naohito Metoki, Takayuki Tazawa, Kenji Hagio