Patent ID: 11946527
Assignee: ZF FRIEDRICHSHAFEN AG
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A vibration damper comprising a working cylinder, which is subdivided by an axially movable piston on a piston rod into a first and a second working chamber filled with a damping medium, wherein the vibration damper has at least one compensating reservoir for receiving the damping medium displaced by the piston rod, wherein there is a flow connection between the first and second working chambers, in which connection there is incorporated a pump assembly, which has a fluctuation in a delivery volume with a constant power supply, wherein, in addition to the at least one compensating reservoir, at least one pulsation accumulator is arranged within the flow connection, the volume and spring rate of the pulsation accumulator being matched to the frequency of the fluctuation of the delivery volume of the pump assembly, wherein the at least one pulsation accumulator is embodied in a housing of the pump assembly, wherein the pump assembly has one outlet chamber for each conveying direction, which outlet chambers are arranged next to one another in the housing, wherein the pulsation accumulator is arranged within the housing in a lateral region which is common to the outlet chambers, wherein the pulsation accumulator is aligned in a manner radially offset with respect to a principal axis of the housing.