Patent ID: 7544050

Claim:
An hydraulic proportioning system comprising: an fluid actuated motor having a driven motor shaft, the motor being in fluid communication with a fluid source; a first pump and a second pump, each with an inlet and an outlet, having a common drive shaft; a drive clutch connected to the driven motor shaft and to the drive shaft, the drive clutch further comprising: an input drum rotated by the driven motor shaft; an output mandrel connected to the drive shaft; spring means for connecting the input drum and the output mandrel, imparting rotation to the drive shaft, and returning the input drum with the driven motor; an injector manifold having: an outlet; a first inlet connectable to a first chemical; a second inlet connectable to a second chemical; a pair of check valves, each one of the check valves in fluid communication with one of the outlet of the first pump and the outlet of the second pump; a chamber with a chamber inlet in fluid communication with the fluid source and a chamber outlet; and a first tube and a second tube supported by the injector manifold and disposed to extend into the chamber, both the first and second tubing in fluid communication with the injection manifold outlet, each tube comprising: an inlet; an outlet; and a check valve connected to the outlet.