Patents by Inventor Graham J. Jeffery

Graham J. Jeffery 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).

  • Patent number: 4498291
    Abstract: A mechanism 25 for preventing a turbine rotor 14 from exceeding a predetermined speed if a shaft 24, connecting the turbine rotor 14 to a compressor rotor 12 of the engine, breaks and releases its axial and torsional constraint on the turbine rotor 14. The mechanism 25 comprises a segmented stator vane assembly 26 downstream of a stage of the turbine rotor 14. Each segment 26 has first and second members 38,40 projecting radially inwards. The first and second members 38,40 are provided respectively at an upstream and downstream region of the inner end of each segment 26. A constraining means 34,36 is provided to constrain the segments 26 against displacement bodily on an axial direction. Static structure of the engine 56 engages the first and second members 38,40 and provides radially outwards and axially rearwards constraint on the first members 38 and radially inwards and axially forwards constraint on the second member 40.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: February 12, 1985
    Assignee: Rolls-Royce Limited
    Inventor: Graham J. Jeffery
  • Patent number: 4356693
    Abstract: In a gas turbine engine having a can annular combustion system, the diffusion passage between the outlet annulus of the engine compressor and the inlets to the individual combustion chambers located in an annular housing, is partially defined by diffusion control housings, one of each of which is integral with the upstream end of a respective one of the combustion chambers. Each diffusion control housing is wedge-like in planform and increases in circumferential width and radial height in the downstream direction. An opening is provided to receive a fuel injector and an air outlet or inlets is located at the upstream end of each housing. The air inlet can be in the form of a single opening at the apex of the housing or in the form of an opening in each flank of the housing.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: November 2, 1982
    Assignee: Rolls-Royce Limited
    Inventors: Graham J. Jeffery, Richard C. Adkins