Patents by Inventor Andr{acute over (e)} Ch{acute over (e)}vrefils

Andr{acute over (e)} Ch{acute over (e)}vrefils 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).

  • Device for controlling air flow in a turbine blade
    Patent number: 6176677
    Abstract: The present invention relates to gas turbines and more particularly to a device for controlling the flow of cooling air through a flowpath in a turbine blade. The device can be inserted in the inlet opening of the blade flowpath and be retained therein. The device comprises a plug member for adjusting the flow of cooling air through the flowpath. The plug member comprises a retaining portion for retaining the plug member at the inlet opening of the flowpath and a blocking portion inserted within the flowpath for reducing the cross-sectional area of the inlet opening. Such a device is inexpensive and can be easily inserted in the inlet opening of a blade flowpath and retained therein.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: January 23, 2001
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Andr{acute over (e)} Ch{acute over (e)}vrefils, Daniel Gheorghe Grigore