Patents by Inventor Masaaki Nakachi

Masaaki Nakachi 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).

  • 4-Cycle engine
    Patent number: 5230314
    Abstract: A 4-cycle internal combustion engine including a crankcase, a cylinder, a cylinder head, a piston adapted to reciprocate within the cylinder, a combustion chamber formed by the piston, the cylinder and the cylinder head, and a crankshaft connected to the piston via a connecting rod, is improved in order to enhance its thermal efficiency, to reduce exhaust emissions and to make it possible to operate the engine while the engine is in any attitude.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: July 27, 1993
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Yoshitaka Kawahara, Masaaki Nakachi, Yoshihide Nakatani