Patents by Inventor Nigel J D Chivers

Nigel J D Chivers 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).

  • Turbomachinery disc
    Patent number: 8100667
    Abstract: A turbomachinery disc, (e.g. a fan) has a primary axis of rotation and an axial flow direction X parallel to the primary axis of rotation. The disc has an annular diaphragm extending from proximate a blade land to a free inner radius. The diaphragm is asymmetrical about a plane (P) perpendicular to the primary axis of rotation.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 24, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Nigel J. D. Chivers, Paul S. Topliss
  • Fan or compressor blisk
    Patent number: 7445433
    Abstract: A fan or compressor blisk for a gas turbine engine, lift fan or the like, comprises a disc having a radially outer rim, and a plurality of aerofoil blades circumferentially spaced around and extending radially outwards from the rim. The rim has a radially inward facing surface on its underside on at least one side of the disc, the radially inward facing surface having at least one indentation for reducing the cross-sectional area of the rim, in the circumferential direction of the disc, in the region of the indentation.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: November 4, 2008
    Assignee: Rolls-Royce plc
    Inventors: Nigel J D Chivers, Paul Spencer Topliss