Patent ID: 8353689

Claim:
A vibratory cavitation pump comprising: a. a working cylinder having an fluid inlet and a fluid outlet; b. a rod extending into the cylinder; c. a piston fixed to the rod; d. a plate fixed to the rod and spaced from the piston; e. an activator slidably mounted to the rod between the piston and the plate; f. an oscillating pumping mechanism operably connected to the rod to move the rod with respect to the working cylinder; and g. an external cylinder disposed around and in fluid communication with the working cylinder, wherein the working cylinder includes a number of apertures formed in the working cylinder to enable fluid in the external cylinder to flow into the working cylinder, wherein the external cylinder comprises i. an internal cavity; and ii. a ring extending radially outwardly from the external cylinder and defining an annular ring cavity therein, wherein the ring cavity is offset from the apertures in the working cylinder, and wherein the fluid inlet is tangentially connected to the ring to impart a rotational motion to a fluid within the ring as it enters the external cylinder.