Patent ID: 9494144
Filing Date: 2016-11-15
CPC Classification: F04B

Claim Text:
1. A piston pump for a high-pressure cleaning appliance, the piston pump being adapted to pressurize a liquid and comprising a pump block having a plurality of pump chambers, into each of which one piston which is movable back and forth parallel to a longitudinal pump axis plunges, wherein the longitudinal axis intersects a center of a swash plate surface that contacts the pistons, and comprising a pump head fitted on the pump block and having a suction inlet for supplying liquid and a pressure outlet for discharging liquid, each pump chamber being in flow connection via a suction valve with the suction inlet and via a pressure valve with the pressure outlet, and comprising a single U-shaped clamping bracket engaging around the pump head for clamping the pump head to the pump block, the U-shaped clamping bracket being oriented symmetrically in relation to the longitudinal pump axis and comprising two limbs arranged symmetrically in relation to the longitudinal pump axis such that central axes of the two limbs form a plane that includes the longitudinal pump axis, and a bridge joining the limbs, and the pump head and the pump block form between them downstream of the pressure valves a pressure chamber in which a central insert part is arranged, the insert part being formed rotationally symmetrically in relation to the longitudinal pump axis and being surrounded by at least one sealing element and having a passage, and a pressure line oriented coaxially with the longitudinal pump axis being arranged downstream of the passage, wherein the piston pump has a pressure line connection piece which is oriented coaxially with the longitudinal pump axis and passes through the center of the bridge of the clamping bracket and defines an end area of the pressure line.