Patents by Inventor Rene Perrin

Rene Perrin 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).

  • Compound turbine rotor and method for manufacturing elements constituting such a rotor
    Patent number: 4060883
    Abstract: The invention concerns welded turbine rotors. It is characterized in that, n the elements constituting a welded rotor which consist of a blade bearing block having at least one axial protuberance, that axial protuberance is made of steel having a lower carbon and nickel content than the remainder of the element and is joined thereto by a transition zone also made of steel. The invention applies more particularly to high-power steam turbines.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: December 6, 1977
    Assignee: Societe General de Constructions Electriques et Macaniques Alsthom
    Inventors: Andre Coulon, Rene Perrin
  • Compound turbine rotor
    Patent number: 3967919
    Abstract: The invention concerns welded turbine rotors. It is characterized in that, n the elements constituting a welded rotor which consist of a blade bearing block having at least one axial protuberance, that axial protuberance is made of steel having a lower carbon and nickel content than the remainder of the element and is joined thereto by a transition zone also made of steel. The invention applies more particularly to high-power steam turbines.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: July 6, 1976
    Assignee: Societe Generale de Constructions Electriques et Mecaniques (ALSTHOM)
    Inventors: Andre Coulon, Rene Perrin