Patent ID: 8448756

Claim:
A method for actuating a parking brake of a disk brake which comprises a caliper configured for straddling a brake rotor and housing a brake piston in a hydraulic chamber, which brake piston is displaceable within the hydraulic chamber by means of a hydraulic actuator on the one hand and a mechanical actuator on the other, and wherein the brake piston is displaceable for actuation of both the parking brake and a service brake, the method comprising the steps: activating the mechanical actuator for displacing the brake piston in the hydraulic chamber in such a way that a volume of a hydraulic fluid contained in the hydraulic chamber is increased; activating the hydraulic actuator, once the hydraulic fluid volume in the hydraulic chamber has been increased by means of the mechanical actuator, for building up or increasing a clamping force of the parking brake; and actuating of the mechanical actuator for maintaining the clamping force.