Patent ID: 7578378
Filing Date: 2009-08-25
Classification: F15B,F16D

Abstract:
1. Valve arrangement for vibration decoupling, which can be connected between a master cylinder and a slave cylinder of a hydraulic force transmission system, said valve arrangement comprising a housing, which has a first and a second hydraulic connection, and two valve bodies, which are accommodated between the hydraulic connections in the housing, wherein the first valve body is biased by means of a first spring element in a first direction towards a stop integral with the housing and has a through-path for the hydraulic fluid, and wherein the, second valve body is biased by means of a second spring element in a second direction—which is opposite to the first direction—towards a first valve seat on the first valve body, so that the second valve body in a basic position of the valve arrangement completely or almost completely closes the through-path in the first valve body and, in the event of a volume flow in the first direction, lifts away from the first valve seat so as to open the through-path in order to allow fluid flow through the valve arrangement; wherein a further through-path for the hydraulic fluid is provided between the first valve body and the housing; wherein a further valve seat is formed on the stop integral with the housing, towards which further valve seat the first valve body is biased, so that the first valve body in the basic position of the valve arrangement completely or almost completely closes the further through-path and, in the event of a volume flow in the second direction, lifts away from the further valve seat so as to open the further through-path in order to allow fluid flow through the valve arrangement; wherein a sealing face of at least one of the first valve seat and the further valve seat is perpendicular to a displacement direction of the first and the second valve body, respectively, and wherein the sealing face of the first valve seat and the sealing face of the further valve seat lie in one plane and are co-planar in the basic position of the valve arrangement.