Patents by Inventor Kazumichi YAMAGUCHI

Kazumichi YAMAGUCHI 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).

  • Two-cycle engine
    Patent number: 9127588
    Abstract: An engine includes a cylinder block, and a piston slidably mounted in a cylinder, with the cylinder block being formed with an exhaust passage leading to a combustion chamber through an exhaust port, a first scavenging port opened to an inner circumferential surface of the cylinder, a first communication passage formed from the first scavenging port in a radial direction of the cylinder, and a first scavenging passage formed with an opening on a bottom surface of the first communication passage, in which a side surface on a far side from the exhaust port forming the communication passage is formed towards the far side from the exhaust port in the combustion chamber, and the opening portion of the first scavenging passage and a landing portion formed in the periphery of the opening portion are formed at a bottom portion of the communication passage.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: September 8, 2015
    Assignee: Yamabiko Corporation
    Inventors: Ken Shirai, Takahiro Yamazaki, Naoki Koga, Kazumichi Yamaguchi
  • TWO-CYCLE ENGINE
    Publication number: 20120145137
    Abstract: An engine includes a cylinder block, and a piston slidably mounted in a cylinder, with the cylinder block being formed with an exhaust passage leading to a combustion chamber through an exhaust port, a first scavenging port opened to an inner circumferential surface of the cylinder, a first communication passage formed from the first scavenging port in a radial direction of the cylinder, and a first scavenging passage formed with an opening on a bottom surface of the first communication passage, in which a side surface on a far side from the exhaust port forming the communication passage is formed towards the far side from the exhaust port in the combustion chamber, and the opening portion of the first scavenging passage and a landing portion formed in the periphery of the opening portion are formed at a bottom portion of the communication passage.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 14, 2012
    Applicant: YAMABIKO CORPORATION
    Inventors: Ken SHIRAI, Takahiro YAMAZAKI, Naoki KOGA, Kazumichi YAMAGUCHI