Piston pump
AssigneeContinental Teves AG & Co. oHG
InventorDieter Dinkel
Life of this patent
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Abstract
The invention relates to a piston pump having a pump housing including a plurality of pump components determining the function of the piston pump, such as a pump piston which is guided in sections, a piston return spring, and a suction and pressure valve. The piston pump also has an annular chamber which delimits the pump piston on the suction side and is designed as a compensating chamber for the liquid, a delivery chamber which delimits the pump piston on the pressure side, and an elastic sealing ring for sealing the pump piston in the direction of a pump drive chamber. To prevent leakage in the direction of the pump drive chamber, the elastic sealing ring is provided with a groove into which is inserted a spring element which presses the sealing ring against the pump piston.
Claims9
A piston pump, for delivering pressure medium in hydraulic brake systems with traction control, having a pump housing which a plurality of pump components which define the function of the piston pump, including a pump piston which is guided in sections in a guide band and is pressed into the pump housing and an annular space which limits the pump piston on the suction side and is configured as a replenishment space for the fluid, and having a delivery space which limits the pump piston on the pressure side, and having an elastic sealing ring which is arranged between the annular guide band and a stepped bore in the pump housing for sealing the pump piston in a leak-free manner in the direction of a piston drive space which is formed in the pump housing, wherein the elastic sealing ring is provided with a groove, in which a spring element which presses the sealing ring onto the pump piston is inserted.
Dependencies are inferred from the claim text.