Patent ID: 7648350

Claim:
A conveying device for a vehicle brake system, to convey pressure fluid to at least one element within the brake system, the conveying device comprising at least one moveable piston ( 2 ) in a receptacle ( 4 ) to displace pressure fluids from a working chamber ( 5 ) with at least one non-return valve ( 9 , 9 ′) to vent the working chamber ( 5 ) and to temporarily separate a hydraulic connection between the working chamber ( 5 ) and a hydraulic channel, whereby the non-return valve ( 9 , 9 ′) comprises at least one valve seat ( 11 ) and one valve body ( 12 ), wherein the valve seat ( 11 ) is assembled from several valve seat segments ( 13 , 14 ) that are provided with an odd number of centering elements ( 18 a , 18 b , 18 c ) that are positioned between pressure fluid passages ( 17 a , 17 b , 17 c ).