Patents by Inventor Jyouji SAWAOKA

Jyouji SAWAOKA 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).

  • Internal combustion engine having positioning pins disposed within fluid communication ports
    Patent number: 8960684
    Abstract: A motorcycle includes a cylinder body, a cylinder head disposed above the cylinder body, and a plurality of dowel pins configured to position the cylinder body and the cylinder head. The cylinder body includes a plurality of cylinders and a plurality of bolt insertion holes. The cylinder head includes first and second passages configured to flow oil or air therethrough. The cylinder body includes a first communication port in communication with the first passage and a second communication port in communication with the second passage. The first communication port is disposed in a front left region, and the second communication port is disposed in a rear right region. The plurality of dowel pins consist of a first dowel pin fitted into the first communication port and the first passage and a second dowel pin fitted into the second communication port and the second passage.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: February 24, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Tetsuji Isechi, Jyouji Sawaoka
  • MOTORCYCLE
    Publication number: 20140345549
    Abstract: A motorcycle includes a cylinder body, a cylinder head disposed above the cylinder body, and a plurality of dowel pins configured to position the cylinder body and the cylinder head. The cylinder body includes a plurality of cylinders and a plurality of bolt insertion holes. The cylinder head includes first and second passages configured to flow oil or air therethrough. The cylinder body includes a first communication port in communication with the first passage and a second communication port in communication with the second passage. The first communication port is disposed in a front left region, and the second communication port is disposed in a rear right region. The plurality of dowel pins consist of a first dowel pin fitted into the first communication port and the first passage and a second dowel pin fitted into the second communication port and the second passage.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 27, 2014
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tetsuji ISECHI, Jyouji SAWAOKA