Patents by Inventor Fujihiro Matsuura

Fujihiro Matsuura 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).

  • Insert core and method for manufacturing a cylinder for internal combustion engine by making use of the insert core
    Patent number: 7165597
    Abstract: There is provided a method of cast molding a cylinder for an internal combustion engine by making use of an insert core, which makes it possible to rationally form the chamfered portions at the rim portion, on the cylinder bore side, of the scavenging ports, the suction port and the exhaust port with high precision and high freedom in dimension and configuration without fluctuation in size and configuration of the chamfered portion.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: January 23, 2007
    Assignee: Kioritz Corporation
    Inventors: Daiju Yamada, Kazuo Sasaki, Fujihiro Matsuura
  • Insert core and method for manufacturing a cylinder for internal combustion engine by making use of the insert core
    Publication number: 20050133189
    Abstract: There is provided a method of cast molding a cylinder for an internal combustion engine by making use of an insert core, which makes it possible to rationally form the chamfered portions at the rim portion, on the cylinder bore side, of the scavenging ports, the suction port and the exhaust port with high precision and high freedom in dimension and configuration without fluctuation in size and configuration of the chamfered portion.
    Type: Application
    Filed: June 2, 2004
    Publication date: June 23, 2005
    Applicant: Kioritz Corporation
    Inventors: Daiju Yamada, Kazuo Sasaki, Fujihiro Matsuura
  • Method for manufacturing a cylinder for two-stroke internal combustion engine and the cylinder manufactured thereby
    Patent number: 6041499
    Abstract: A method for manufacturing a cylinder for a two-stroke internal combustion engine provided with a pair of hollow scavenging passages, which comprises the steps of casting a raw cylinder body provided with the hollow scavenging passages and forming scavenging ports and/or air-fuel mixture inlet ports communicating respectively with said scavenging passages in the raw cylinder body by means of non-contact machining method.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: March 28, 2000
    Assignee: Kioritz Corporation
    Inventors: Fujihiro Matsuura, Tomohiro Ohtani, Minoru Yonekawa