Patents by Inventor Takuyuki Itoh

Takuyuki Itoh 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).

  • Method for forming scroll members used in a scroll type fluid machine
    Patent number: 4696084
    Abstract: A scroll type fluid machine comprising a pair of mutually engaged scroll members each including a side plate and a spiral lap uprightly disposed on an inside surface of the side plate; when the scroll members are relatively revolved in solar motion relationship, a fluid volume in sealed chambers defined by the pair of engaged scroll members being varied, so that a pressure of the fluid in the sealed chambers is thereby varied in order to discharge a gas therefrom, characterized by constituting so that stress may not concentrate at stress concentration portions of the scroll members, i.e.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: September 29, 1987
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Takahisa Hirano, Shoji Fukami, Yasuharu Maruiwa, Takuyuki Itoh, Tamio Sugimoto, Tetsuo Ono, Masatoshi Mukai
  • Scroll type fluid machine with prevention of stress concentration
    Patent number: 4666380
    Abstract: A scroll type fluid machine comprising a pair of mutually engaged scroll members each including a side plate and a spiral lap uprightly disposed on an inside surface of the side plate; when the scroll members are relatively resolved in solar motion relationship, a fluid volume in sealed chambers defined by the pair of engaged scroll members being varied, so that a pressure of the fluid in the sealed chambers is thereby varied in order to discharge a gas therefrom, characterized by constituting so that stress may not concentrate at stress concentration portions of the scroll members, i.e.
    Type: Grant
    Filed: June 14, 1985
    Date of Patent: May 19, 1987
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Takahisa Hirano, Shoji Fukami, Yasuharu Maruiwa, Takuyuki Itoh, Tamio Sugimoto, Tetsuo Ono, Masatoshi Mukai