Patent ID: 7686574

Claim:
A centrifugal impeller/propeller pump system comprising: a housing including a major component having a planar section with an aperture constituting an inlet and a generally cylindrical peripheral section formed with a tangential extension constituting an outlet; the housing also including a minor component having a planar section with an aperture constituting an outlet and formed with a tangential extension adapted to overlie the major component for creating a chamber; and a rotatable assembly including an annular plate with an aperture and spaced impeller segments and a propeller with an axial bore and propeller blades with openings between the blades, the bore adapted to receive a drive shaft of a motor for rotating the propeller and the annular plate and the impeller segments; wherein the annular plate and impeller segments are positioned within the chamber with the propeller blades located partially interior of the chamber and partially exterior of the chamber and extending through the circular aperture of the planar section of the minor component.