Patent ID: 6095776
Filing Date: 2000-08-01
Classification: F04C

Abstract:
A fluid handling pump comprising:(a) a pump body defining a cylindrical chamber with a suction port and a discharge port in fluid communication with the cylindrical chamber;(b) an impeller assembly including a cylindrical shaft, an inner rigid hub member affixed to the shaft, an outer, relatively rigid rim member dimensioned to fit within the cylindrical chamber of the pump body for rotation therein, and a plurality of regularly, angularly-shaped, flexible walls extending spirally between the inner rigid hub member toward the outer rim member and defining a plurality of compressible chambers; and(c) means for mounting the cylindrical shaft eccentrically with respect to a longitudinal axis of the cylindrical chamber such that rotation of the shaft reduces the volume of the plurality of compressible chambers in moving from a location in the pump body of the suction port toward a location in the pump body of the discharge port.