Patents by Inventor Manabu Akaba

Manabu Akaba 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).

  • Exhaust pipe assembly for multi-cylinder internal combustion engine
    Patent number: 6205778
    Abstract: An exhaust pipe assembly for a multi-cylinder internal combustion engine is made up of a plurality of exhaust pipes made of steel whose upstream ends are connected to a flange provided for connection to a cylinder head, a collecting case to which downstream ends of the exhaust pipes are connected, and a coupling flange interposed between the exhaust pipes and the collecting case. The coupling flange is made of a thin steel plate and has upward burred portions which are circular in shape and into which respective downstream ends of the exhaust pipes are separately inserted for welding with the burred portions, and a downward bent portion whose peripheral edge portion is fitted onto an upper outside end portion of the collecting case for welding with the bent portion.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: March 27, 2001
    Assignees: Kabushiki Kaisha Yutaka Giken, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Manabu Akaba, Kazuhiro Furuhashi, Hideo Matsuzawa