Patents by Inventor John Frederick Coplin

John Frederick Coplin 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).

  • Rotor blade for a gas turbine engine
    Patent number: 4120607
    Abstract: A rotor blade for a gas turbine engine comprises an aerofoil, an inner platform and a root portion. In order to restrain the movement of the blade should it become detached from its rotor, the platform has an indentation in that edge adjacent the convex flank. If the blade detaches, this indentation engages with the leading edge of the next adjacent blade in the row, tending to restrict motion of the detached blade to the radial plane.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: October 17, 1978
    Assignee: Rolls-Royce Limited
    Inventor: John Frederick Coplin
  • Matching thermal expansion of components of turbo-machines
    Patent number: 4101242
    Abstract: A turbo-machine casing comprises a part double skinned portion at a location surrounding at least one stage of rotor blades; the spaces defined between the two skins containing a heat insulating medium, and the inner of the two skins being additionally provided upon its radially innermost surface with a lining of heat insulating material, the casing being connected to a mass disposed radially outwardly of the casing whereby the rate of thermal expansion of the casing can be reduced nearly equal to the bladed rotor which it surrounds.
    Type: Grant
    Filed: June 2, 1976
    Date of Patent: July 18, 1978
    Assignee: Rolls-Royce Limited
    Inventors: John Frederick Coplin, Anthony Butler, Peter Frederick Neal