Patents by Inventor John M. Durkin

John M. Durkin 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).

  • Fluidic controlled diffusers for turbopumps
    Patent number: 4228753
    Abstract: An arrangement for controlling the apparent curvature of diffuser vanes of turbine fan to reduce stalling of the vanes and increase efficiency of the fan output over a wider range of flow demand. Sensors responsive to pressure on opposite sides of the vanes selectively control the discharge of pressurized fluid from the diffuser vanes to effect their apparent curvature changes. The arrangement has particular use in a ride control system for surface effect ships.
    Type: Grant
    Filed: February 27, 1979
    Date of Patent: October 21, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Sydney Davis, John M. Durkin