Patent ID: 7357564

Claim:
An apparatus for pumping and mixing plural components of differing viscosities comprising: at least two hoppers, each hopper comprising a hopper outlet; a plurality of spaced dividers positioned vertically over the hoppers defining areas for adding each component to the hoppers, and one area for adding aggregate to each hopper; an auger rotatably secured within each hopper, the auger being adapted to wipe the inside surface of its respective hopper during rotation; a piston pump in communication with each hopper outlet, each piston pump comprising a pump inlet and a pump outlet, and each piston pump adapted to be joined by a coupling yoke, whereby components of differing viscosities can be pumped at a desired mix ratio and a static mixer comprising: a mixer inlet; and a mixer outlet, whereby plural components of differing viscosities can be uniformly pumped and mixed and observed.