Patent ID: 7493993

Claim:
A brake system for a vehicle comprising: an actuator comprising a service chamber and a parking chamber, said actuator operating along an actuator axis through said service chamber and said parking chamber, and said actuator having an overall length of less than approximately 200 millimeters measured along the actuator axis, and said actuator having a service stroke length and a parking stroke length where the parking stroke length is less than the service stroke length; an application unit actuated by said actuator, said application unit including a force multiplying device for generating an application force, and wherein the application force is exerted in a direction substantially parallel to the actuator axis; and a push rod transmitting an actuation force over the service stroke length and the parking stroke length to said application unit; an anti-compounding valve preventing overload associated with compounding of a service force and a parking force when the actuation force is transmitted by the push rod over the service stroke length and the parking stroke length.