Patents by Inventor Michael J. Prevett

Michael J. Prevett 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).

  • Flotation separation apparatus and method
    Patent number: 4425232
    Abstract: A flotation separation cell is disclosed having a rotor-stator pump assembly wherein a rotor body comprises integrally formed hub, blade and top plate members. These members form a gas chamber in an upper sector of the rotor. The blades are curvilinear and of parabolic or vortex shape. A gas stream which is conveyed to the gas chamber is discharged from the gas chamber in a transverse direction and flows in gas pockets along surfaces of moving blades for dispersion in a slurry.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: January 10, 1984
    Assignee: Dorr-Oliver Incorporated
    Inventors: George A. Lawrence, Michael J. Prevett, Eugene L. Smith