Importance

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Abstract

Presented is a piston pump comprising: a frame, a control element mounted in a rotatable manner about a central axis with at least one control surface, a plurality of cylinders having pistons displaceable therein, a suction connection for inflow of a fluid into the cylinders, a pressure connection for outflow of the fluid out of the cylinders. The cylinders are connected by lines to the suction and pressure connection. The cylinders, the pistons, and the control element are configured such that the position of the pistons in the cylinders can change by movement of the control element. The cylinders and the pistons are mounted so that they do not rotate completely about the central axis when the control element rotates. So that the piston pump can be operated with low maintenance, it is proposed that the cylinders or the pistons are connected respectively to a rotatably mounted roller.

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First Claim