Patents by Inventor Avi Seifert

Avi Seifert 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).

  • Airfoil with dynamic stall control by oscillatory forcing
    Patent number: 6267331
    Abstract: A method for inhibiting dynamic stall of an airfoil by causing a fluid to flow out of at least one location on the airfoil. This location may be anywhere on the airfoil; but if the location is within one-quarter of the airfoil chord from the leading edge and the fluid flow has non-zero net mass flux, then the fluid flow is modulated at a frequency described by a Strouhal ratio greater than one.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: July 31, 2001
    Assignee: Ramot University Authority For Applied Research & Industrial Development Ltd.
    Inventors: Israel Wygnanski, David Greenblatt, Avi Seifert
  • Apparatus and method for controlling the motion of a solid body or fluid stream
    Patent number: 6250586
    Abstract: This invention discloses a fluid dynamic system including a fluid medium separated from a solid medium by a solid boundary, one of which media is moving with respect to the other, apparatus for controlling the motion of the moving medium, comprising, a perturbation-producing element at solid boundary, and a drive for cyclically driving the perturbation-producing element to produce cyclical fluid perturbations in the fluid medium sufficient to alter the motion of the moving medium. A method for including a fluid medium separated from a solid medium by a solid boundary in a fluid dynamic system is also disclosed.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: June 26, 2001
    Assignee: Ramot University Authority for Applied Research and Industrial Development Ltd.
    Inventors: Avi Seifert, Israel Wygnanski