Patent ID: 9102311
Filing Date: 2015-08-11
Classification: B60T

Abstract:
1. A multi-circuit protection valve for a compressed-air supply device of a vehicle, comprising: a first port for a service brake, wherein the first port has two separate service brake circuit ports for a first service brake circuit and a second service brake circuit, and wherein the first service brake circuit port is secured by a first service brake circuit overflow valve and the second service brake circuit port is secured by a second service brake circuit overflow valve, and a second port for a parking brake, which is secured by an overflow valve, wherein the first service brake circuit or the second service brake circuit is fillable on a priority basis, wherein the overflow valve has a first active face which is pressurizable with a valve input pressure, a second active face which is pressurizable with a valve output pressure, and a third active face which is pressurizable with a service brake pressure from the non-priority filled service brake circuit, and wherein forces generated via the three active faces counter a closing force to open or hold open the overflow valve.