DRIVE SYSTEM FOR A POSITIVE DISPLACEMENT PUMP

Abstract: a drive system for a pump includes a housing and a fluid displacer and a reciprocator configured to mechanically displace the fluid displacer through respective suction strokes. the housing and fluid displacer define an internal pressure chamber configured to be filled with a working fluid having a charge pressure. the internal pressure chamber is configured such that the working fluid exerts the charge pressure on the fluid displacer during both the suction stroke and a pressure stroke of the fluid displacer.

Inventor(s): Bradley H. Hines, Brian W. Koehn, Jeffrey A. Earles, Paul W. Scheierl, Adam K. Collins

CPC Classification: F04B43/025 (POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type ; non-positive-displacement pumps ; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped ))

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