Patents by Inventor Katsumasa Soga

Katsumasa Soga 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).

  • Waterjet propulsion system for watercraft
    Patent number: 4917637
    Abstract: A waterjet propulsion system for a watercraft including a duct disposed on the bottom of the watercraft with the opening facing backward, a device to produce waterjet in the duct and a steerable nozzle fitted on the duct opening. Inside the nozzle, a flow guide extending forwardly beyond a supporting axis for the nozzle is formed integrally with the nozzle. For the flow guide, a plate or plates fitted vertically respectively including or parallel to the nozzle centerline or a cylinder mounted coaxially with the nozzle can be preferably employed.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: April 17, 1990
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Katsumasa Soga, Jiro Kitao