US Patent 7553065 Mixing device

The present invention is a mixing device and a method of mixing viscous fluids with a mixing device. The mixing device includes a shaft and a first and second supports mounted for rotation with the shaft. A plurality of vanes extend from each support, the vanes defining open ends of the mixer into which fluid is drawn, and openings between the vanes through which fluid is expelled. In use, the mixing device is located in a viscous fluid and the shaft is rotated, thereby effecting rotation of the vanes, causing fluid to move through the vanes and mix the fluid.