Patent ID: 8231362

Claim:
A pump comprising: an input portion comprising an input cylinder having an inner diameter, an input piston positioned within said input cylinder, and an input cylinder guide rod attached to said piston, said input cylinder guide rod having a first diameter, wherein said input piston and said input cylinder guide rod are operable to pump a source substance; an effluent portion comprising an effluent cylinder having an inner diameter, an effluent piston positioned within said effluent cylinder, and an effluent cylinder guide rod attached to said effluent piston, said effluent cylinder guide rod having a second diameter, wherein said effluent piston and said effluent cylinder guide rod are operable to pump an effluent, wherein: the inner diameter of said input cylinder and the inner diameter of said effluent cylinder are substantially equal and at least a portion of each of said input cylinder and said effluent cylinder are in fluid communication with each other; wherein a difference between the first diameter associated with said input cylinder guide rod and the second diameter associated with said effluent cylinder guide rod is operable to compensate for a pressure difference between a pressure associated with a source substance input into said input cylinder and a pressure associated with an effluent output to said effluent cylinder; wherein the input cylinder and the effluent cylinder each comprise a fluid section, said fluid sections in fluid communication with one another; and wherein the input cylinder guide rod is disposed through at least a portion of the fluid section of the input cylinder and the effluent cylinder guide rod is disposed through at least a portion of the fluid section.