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US 8,386,040 B2Granted
System and method for pump variable stroke
AssigneeBoard of Regents, The University of Texas Systems
InventorsThomas D. Pate, Raul G. Longoria, Richard Smalling, Jeffrey R. Gohean
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Abstract
Systems and methods for providing a variable pumping stroke from a pump comprising a pumping chamber, a pump inlet, a pump outlet, a valving mechanism, and a drive piston. In one embodiment, the pump inlet is in fluid communication with the pumping chamber regardless of the location of the drive piston within the pumping chamber, and the pump outlet is similarly in fluid communication with the pumping chamber regardless of the location of the drive piston within the pumping chamber.
Claims7
A pump system comprising:
- a pumping chamber forming a loop;
- a pump inlet in fluid communication with the pumping chamber;
- a pump outlet in fluid communication with the pumping chamber;
- a drive piston disposed within the pumping chamber;
- and
- a valve mechanism disposed between the pump inlet and pump outlet, wherein:
- the pump inlet is configured to be in fluid communication with the pumping chamber regardless of the location of the drive piston within the pumping chamber;
- the pump outlet intersects the pumping chamber in an outlet transition zone with an outlet cross-sectional area;
- the drive piston comprises a radially outer surface with an outer surface area;
- and
- the outlet cross-sectional area is greater than the outer surface area, such that the pump outlet is configured to be in fluid communication with the pumping chamber regardless of the location of the drive piston within the pumping chamber.
8 more elements
Dependencies are inferred from the claim text.