Patents by Inventor David Peter-Fenner

David Peter-Fenner 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).

  • Fluid impeller
    Patent number: 6547517
    Abstract: A fluid impeller, such as a fan for moving air or gases, includes one or more rotatable fluid impelling blades; a flow guiding member adjacent to an edge of the blades, and at least one blade facing surface of the flow guiding member being formed substantially as a segment of a sphere of radius r1 about a center of curvature. Each blade has a flow guiding member abutting edge curved substantially to fit against a sphere of radius r1.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: April 15, 2003
    Assignee: Elta Fans Limited
    Inventors: David Peter-Fenner, Christopher Winston Lack