Patents by Inventor Masahiro Inokuma

Masahiro Inokuma 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).

  • Cylinder and method for manufacturing a cylinder for an internal combustion engine
    Patent number: 6729274
    Abstract: A cylinder and a method for manufacturing a cylinder for an internal combustion engine is provided which avoids the generation of a step portion at the scavenging port without necessitating enhanced precision of the positioning of the working tools or the working location. A raw cylinder body is cast-molded with the scavenging port portion thereof being left closed. Subsequently, this closed scavenging port portion is cut out (or opened) by means of cutting work, etc. The cutting out of the closed scavenging port portion is performed by widening the cylinder bore side thereof at predetermined angles to the planes of the inner wall of the hollow scavenging passageway formed contiguous to the closed scavenging port portion.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: May 4, 2004
    Assignee: Kioritz Corporation
    Inventors: Fujihiro Matuura, Takashi Fujisawa, Masahiro Inokuma
  • Cylinder and method for manufacturing a cylinder for an internal combustion engine
    Publication number: 20030079344
    Abstract: A cylinder and a method for manufacturing a cylinder for an internal combustion engine is provided which avoids the generation of a step portion at the scavenging port without necessitating enhanced precision of the positioning of the working tools or the working location. A raw cylinder body is cast-molded with the scavenging port portion thereof being left closed. Subsequently, this closed scavenging port portion is cut out (or opened) by means of cutting work, etc. The cutting out of the closed scavenging port portion is performed by widening the cylinder bore side thereof at predetermined angles to the planes of the inner wall of the hollow scavenging passageway formed contiguous to the closed scavenging port portion.
    Type: Application
    Filed: September 9, 2002
    Publication date: May 1, 2003
    Applicant: Kioritz Corporation
    Inventors: Fujihiro Matuura, Takashi Fujisawa, Masahiro Inokuma