TREA

Derek A. Roberts

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  • Bristol, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas turbine engine
    • Patent number 5,107,675
    • Issue date Apr 28, 1992
    • Rolls-Royce Limited
    • Derek A. Roberts
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Friction welder mechanism
    • Patent number 4,858,815
    • Issue date Aug 22, 1989
    • Rolls-Royce plc
    • Derek A. Roberts
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Load transfer structure
    • Patent number 4,756,153
    • Issue date Jul 12, 1988
    • Rolls-Royce plc
    • Derek A. Roberts
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Turbine overspeed limiter for turbomachines
    • Patent number 4,503,667
    • Issue date Mar 12, 1985
    • Rolls-Royce Limited
    • Derek A. Roberts
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotor drive systems
    • Patent number 4,452,567
    • Issue date Jun 5, 1984
    • Rolls-Royce Limited
    • John M. Treby
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Air sealing for turbomachines
    • Patent number 4,425,079
    • Issue date Jan 10, 1984
    • Rolls-Royce Limited
    • Trevor H. Speak
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Shaft coupling
    • Patent number 4,395,247
    • Issue date Jul 26, 1983
    • Rolls-Royce Limited
    • Derek A. Roberts
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    System for supporting a rotor in a conditions of accidental dynamic...
    • Patent number 4,375,906
    • Issue date Mar 8, 1983
    • Rolls-Royce Limited
    • Derek A. Roberts
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Gas turbine rotor support systems
    • Patent number 4,306,755
    • Issue date Dec 22, 1981
    • Rolls-Royce Limited
    • Derek A. Roberts
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Cooled rotor blade for a gas turbine engine
    • Patent number 4,224,011
    • Issue date Sep 23, 1980
    • Rolls-Royce Limited
    • Alec G. Dodd
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Bearing assembly between inner and outer shafts having two roller b...
    • Patent number 4,175,803
    • Issue date Nov 27, 1979
    • Rolls-Royce Limited
    • Derek A. Roberts
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...