Patents by Inventor Little P. Curtis

Little P. Curtis 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).

  • Grooved visco seal for stationary discharge chamber of water-cooled turbine generator
    Patent number: 4114059
    Abstract: A discharge chamber seal arrangement for a water cooled turbine generator rotor. The discharge chamber seal arrangement comprises a gland seal operable during high speed operation of the rotor and a contact seal operable during low rotor speed and at standstill. Helical grooves located on the inside diameter of the gland seal develops an axial pressure gradient in the fluid annulus surrounding the shaft to reduce the leakage flow at speed through the gland seal. The helical grooves apply a pumping action which opposes the leakage flow.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: September 12, 1978
    Assignee: Westinghouse Electric Corp.
    Inventors: Jacques E. Albaric, Little P. Curtis, George F. Dailey