Patents by Inventor Fumio Nagata

Fumio Nagata 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).

  • Water vessel propulsion apparatus
    Patent number: 5344345
    Abstract: A water jet propulsion apparatus creates a high speed water jet rearwardly through a duct in a hull by injecting air and water into the duct from at least one injection port, thereby to impart a thrust to the hull. The need of forming protrusions such as an impeller within the duct thus is eliminated, and the resistance loss of the jet is minimized. Propulsion efficiency is improved remarkably and noise is reduced, while at the same time course stability is improved.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: September 6, 1994
    Assignee: IDC Corporation
    Inventor: Fumio Nagata
  • Jet pump
    Patent number: 4487553
    Abstract: A Jet pump for transporting fluid by drawing in the fluid through utilization of a jet stream under high pressure includes a path for transporting the fluid, a plurality of nozzles surrounding the path for supplying high pressure fluid and a plurality of outlets surrounding the nozzles for supplying low pressure fluid.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: December 11, 1984
    Inventor: Fumio Nagata