Patents by Inventor Robert Szewalski

Robert Szewalski 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).

  • Moving blade for thermic axial turbomachines
    Patent number: 4284388
    Abstract: The invention finds application in the manufacture of working blades of a length exceeding that of the blades known so far, without infringing the limitations issuing from flow considerations and strength of the rotor. The blade comprises two different sheets deliminated by a suitably selected intermediary cross section of the blade. Each of the sheets is formed according to a different law dictated by strength and flow considerations. Beginning from the cross-section which delimits the sheets, the sheets are twisted in opposite directions.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: August 18, 1981
    Assignee: Polska Akademia Nauk, Instytut Maszyn Przeplywowych
    Inventor: Robert Szewalski