Patents by Inventor Nigel John Twiggs

Nigel John Twiggs 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).

  • Developments relating to a rotor arrangement
    Publication number: 20090081028
    Abstract: A rotor arrangement comprising a rotor-section and a circumferential moveable seal around the rotor-section, the arrangement being such that, for a given rotation rate, the rotor-section is subject to an associated radial growth and a corresponding related axial displacement, relative to the seal, wherein the rotor-section is provided with an axially-varying profile for off-setting said radial growth of the rotor-section, adjacent the circumferential seal, at said given rotation rate.
    Type: Application
    Filed: September 11, 2008
    Publication date: March 26, 2009
    Applicant: ROLLS-ROYCE PLC
    Inventors: Jonathan J. Morgan, Nigel John Twiggs, Christian H. Enderby