Patent ID: 7559438

Claim:
A method for dispensing a desired ratio of three fluids, the method including providing a first piston and a first cylinder, a second piston and a second cylinder, a third piston and a third cylinder, reciprocating the first piston in the first cylinder to exhaust a first amount of the first fluid from the first cylinder during an exhaust stroke of the first piston in the first cylinder, reciprocating the second piston in the second cylinder to exhaust a second amount of the second fluid from the second cylinder during an exhaust stroke of the second piston in the second cylinder, reciprocating the third piston in the third cylinder to exhaust a third amount of the third fluid from the third cylinder during an exhaust stroke of the third piston in the third cylinder, collecting the first, second and third amounts in a common container, and adjusting at least one of the stroke of the first piston in the first cylinder, the stroke of the second piston in the second cylinder and the stroke of the third piston in the third cylinder to adjust the ratio including providing a gauge for determining the stroke of the first piston in the first cylinder, the stroke of the second piston in the second cylinder and the stroke of the third piston in the third cylinder.