Patents by Inventor Martin Hamblett

Martin Hamblett 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).

  • Air cooled gas turbine aerofoil
    Patent number: 5562409
    Abstract: A hollow turbine blade has cooling air feed passages in the wall defining the central cavity. The wall surfaces of the feed passages slope away from the central cavity in a diverging manner, so as to reduce the step difference in metal thickness between the passages relative to the thickness of metal dividing each passage and the central cavity. The temperature gradient from the blade external surface and the wall surface of the central cavity is thus also reduced, avoiding thermal stresses.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: October 8, 1996
    Assignee: Rolls-Royce plc
    Inventors: Duncan J. Livsey, Martin Hamblett
  • Aerofoil section members for turbine engines
    Patent number: 4714407
    Abstract: To minimize secondary losses and flow maldistribution, an aerofoil such as a gas turbine nozzle guide vane, is designed so that in the throat defined by the trailing edge of one aerofoil and the flank of the adjacent aerofoil, the local gas flow streamlines are normal to the trailing edge of the aerofoil at the point of intersection.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: December 22, 1987
    Assignee: Rolls-Royce plc
    Inventors: John C. Cox, Stephen E. Morgan, Martin Hamblett, Alfred Rubini
  • Aerofoil section members for gas turbine engines
    Patent number: 4696621
    Abstract: A gas turbine engine nozzle guide vane has "barrelled" shape, producing an "hourglass" shaped passage between adjacent vanes. These shapes promote radial pressure gradients which reduce secondary flaws in the motive gas passages.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: September 29, 1987
    Assignee: Rolls-Royce
    Inventors: Martin Hamblett, Duncan J. Livsey
  • Cooled turbine blade for a gas turbine engine
    Patent number: 4500258
    Abstract: A cooled turbine blade is provided with an aerofoil which tapers from root end to tip end so that the thicker root section provides greater resistance to detachment of the aerofoil. In order to provide effective cooling and light weight the aerofoil has a central `dead` cavity which extends from its root and part way up the aerofoil. Spanwise cooling passages bifurcate to pass between the cavity and the side walls in the relatively constant metal thickness thus provided.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: February 19, 1985
    Assignee: Rolls-Royce Limited
    Inventors: Alec G. Dodd, Martin Hamblett