Patents by Inventor Masato Ikusue

Masato Ikusue 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).

  • Motorcycle transmission
    Patent number: 6672982
    Abstract: A motorcycle has a final drive, including a flexible drive member, such as a chain or a belt, that extends between the drive pulley and the driven pulley. A belt retention member is positioned proximate a forward portion of the final drive to reduce the likelihood of the belt skipping free of the drive pulley. The belt retention member preferably includes an upper belt retention portion and a lower belt retention portion. Preferably, the upper drive retention portion is positioned further forward relative to the lower belt retention portion such that the upper portion is moved more forward relative to an axis of rotation of the pulley. In this manner, the belt retention member allows more slack to be thrown during rapid acceleration from a decelerated state in the illustrated motorcycle.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: January 6, 2004
    Assignee: Yamaha Motor Co., Ltd.
    Inventors: Masato Ikusue, Daisuke Nakao
  • Motorcycle transmission
    Publication number: 20020107099
    Abstract: A motorcycle has a final drive, including a flexible drive member, such as a chain or a belt, that extends between the drive pulley and the driven pulley. A belt retention member is positioned proximate a forward portion of the final drive to reduce the likelihood of the belt skipping free of the drive pulley. The belt retention member preferably includes an upper belt retention portion and a lower belt retention portion. Preferably, the upper drive retention portion is positioned further forward relative to the lower belt retention portion such that the upper portion is moved more forward relative to an axis of rotation of the pulley. In this manner, the belt retention member allows more slack to be thrown during rapid acceleration from a decelerated state in the illustrated motorcycle.
    Type: Application
    Filed: April 2, 2002
    Publication date: August 8, 2002
    Inventors: Masato Ikusue, Daisuke Nakao
  • Motorcycle transmission
    Patent number: 6364797
    Abstract: A motorcycle has a final drive, including a flexible drive member, such as a chain or a belt, that extends between the drive pulley and the driven pulley. A belt retention member is positioned proximate a forward portion of the final drive to reduce the likelihood of the belt skipping free of the drive pulley. The belt retention member preferably includes an upper belt retention portion and a lower belt retention portion. Preferably, the upper drive retention portion is positioned further forward relative to the lower belt retention portion such that the upper portion is moved more forward relative to an axis of rotation of the pulley. In this manner, the belt retention member allows more slack to be thrown during rapid acceleration from a decelerated state in the illustrated motorcycle.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: April 2, 2002
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masato Ikusue, Daisuke Nakao