Patent ID: 7789639

Claim:
In a piston pump, having a pump housing, in which housing a pump piston is guided axially movably, so that upon an actuation of the pump piston, a fluid is pumped from an intake side to a compression side, via a pump chamber bordering on the pump piston, the compression side being provided with an outlet valve, the improvement comprising a damping element preceding the outlet valve, the damping element being guided axially movably in a bushing, the damping element comprises a tubular member having an annular-collar-like component and a cylindrical component having a diameter that is smaller than the annular-collar-like component, a spring-elastic component fastened between the annular-collar-like component of the tubular member and a guide region of the bushing, the spring-elastic component embracing the cylindrical component of the tubular member by positive engagement and an annular chamber or gap defined radially outward of the spring-elastic component between the spring-elastic component and the bushing.