Patents by Inventor Kai Takeuchi

Kai Takeuchi 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).

  • Controllable muffler system for internal combustion engine
    Patent number: 6755279
    Abstract: A controllable muffler system is sued for use with an engine that produces a power by burning fuel. The system comprises a first passage section extending from the engine for having an exhaust gas of the engine flow therethrough. The first passage section has a catalytic converter mounted thereon. The system further comprises a dual passage section including second and third passage sections which extend separately from an end of the first passage section. The second passage has a control valve for controlling the flow rate of the exhaust gas flowing therethrough. The system further comprises a fourth passage section extending from respective ends of the second and third passage sections to the open air. The fourth passage section has a rear muffler mounted thereon. The system further comprises a control unit which controls the control valve of the second passage section in accordance with an operation condition of the engine.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: June 29, 2004
    Assignees: Calsonic Kansei Corporation, Nissan Motor Co., Ltd.
    Inventors: Yukio Kaneko, Tanomo Norikawa, Shinichi Horiuchi, Kai Takeuchi, Atsushi Kijima
  • Muffler
    Patent number: 6705429
    Abstract: A muffler comprises a case having opposed ends closed; a partition structure installed in the case to constitute a sound silencing path; inlet and outlet pipes incorporated with the sound silencing path; and a sound shielding wall structure installed in the case to constitute a part of the sound silencing path.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 16, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yoichi Kaku, Kai Takeuchi, Hidefumi Mihara, Tsuyoshi Murakami
  • Muffler
    Publication number: 20030155175
    Abstract: A muffler comprises a case having opposed ends closed; a partition structure installed in the case to constitute a sound silencing path; inlet and outlet pipes incorporated with the sound silencing path; and a sound shielding wall structure installed in the case to constitute a part of the sound silencing path.
    Type: Application
    Filed: January 27, 2003
    Publication date: August 21, 2003
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yoichi Kaku, Kai Takeuchi, Hidefumi Mihara, Tsuyoshi Murakami
  • Controllable muffler system for internal combustion engine
    Publication number: 20020033302
    Abstract: A controllable muffler system is sued for use with an engine that produces a power by burning fuel. The system comprises a first passage section extending from the engine for having an exhaust gas of the engine flow therethrough. The first passage section has a catalytic converter mounted thereon. The system further comprises a dual passage section including second and third passage sections which extend separately from an end of the first passage section. The second passage has a control valve for controlling the flow rate of the exhaust gas flowing therethrough. The system further comprises a fourth passage section extending from respective ends of the second and third passage sections to the open air. The fourth passage section has a rear muffler mounted thereon. The system further comprises a control unit which controls the control valve of the second passage section in accordance with an operation condition of the engine.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 21, 2002
    Applicant: CALSONIC KANSEI CORPORATION & NISSAN MOTOR CO., LTD.
    Inventors: Yukio Kaneko, Tanomo Norikawa, Shinichi Horiuchi, Kai Takeuchi, Atsushi Kijima