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).

  • Method of manufacturing a rotor for a gas turbine engine that includes identifying the frequency response of the rotor and adjusting the frequency response by providing a pressure gradient within the rotor
    Patent number: 8225506
    Abstract: A method of manufacturing a component, the method including the steps of: providing a component having a first portion, which first portion defines a cavity, characterized by; identifying a first frequency response of the first portion and/or the entire component, and introducing material into the cavity to achieve an adjusted frequency response of the first portion and hence a desired frequency response of the component.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: July 24, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Nigel J.D. Chivers, Keith C. Goldfinch
  • 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
  • Turbomachinery disc
    Publication number: 20090180891
    Abstract: A turbomachinery disc, eg a fan (310) has a primary axis of rotation (316) and an axial flow direction X parallel to the primary axis of rotation (316), and comprises an annular diaphragm (318) extending from proximate a blade land (312) to a free inner radius (320), characterised in that the diaphragm (318) is asymmetrical about a plane (P) perpendicular to the primary axis of rotation (316).
    Type: Application
    Filed: November 14, 2008
    Publication date: July 16, 2009
    Applicant: ROLLS-ROYCE PLC
    Inventors: Nigel J.D. Chivers, Paul S. Topliss
  • Component with tuned frequency response
    Publication number: 20090056126
    Abstract: A method of manufacturing a component (110), the method comprising the steps of: providing a component having a first portion (20, 40, 60, 80, 100, 116), which first portion defines a cavity (26, 46, 66, 86, 106), characterised by; identifying a first frequency response of the first portion and/or the entire component, and introducing material (28, 48, 68, 88, 108) into the cavity to achieve an adjusted frequency response of the first portion and hence a desired frequency response of the component.
    Type: Application
    Filed: July 7, 2008
    Publication date: March 5, 2009
    Applicant: ROLLS-ROYCE PLC
    Inventors: Nigel J.D. Chivers, Keith C. Goldfinch
  • 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