Patents by Inventor Nigel Twiggs

Nigel 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
    Patent number: 8075254
    Abstract: A rotor arrangement has 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. 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: Grant
    Filed: September 11, 2008
    Date of Patent: December 13, 2011
    Assignee: Rolls-Royce PLC
    Inventors: Jonathan J Morgan, Nigel Twiggs, Christian H Enderby