Patents by Inventor Peter Richard Needham

Peter Richard Needham 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).

  • Gas turbine engines
    Patent number: 4050843
    Abstract: A seal clearance control device for maintaining a radial clearance between turbine blade tips and the surrounding seal ring. The shroud is controlled by a relatively fast response ring and a relatively slow ring the fast ring serving to control the radial growth of the sealing ring and the slow ring serving to control the radial contraction of the seal ring.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: September 27, 1977
    Assignee: Rolls-Royce (1971) Limited
    Inventors: Peter Richard Needham, Kenneth Richard Langley