Patent ID: 8424655

Claim:
A brake cylinder for a pneumatically actuated vehicle brake, comprising: a spring force accumulator brake section for carrying out parking brake operations via a spring force accumulator spring, and a service brake section for carrying out service brake operations which are actuated by compressed air, the spring force accumulator brake section and the service brake section being combined in a housing to form one structural unit; a first piston dividing the housing into two spaces, of which one of the two spaces serves as pressure space for actuating the service brake section, the spring force accumulator spring of the spring force accumulator section being arranged in the other space on an opposite side of the first piston; a pneumatically actuable locking mechanism, the spring force accumulator spring acting in the other space on the opposite side of the first piston from the service brake pressure space on a further spring force accumulator piston which is lockable with respect to the first piston by the locking mechanism, and is first releaseable by a release action of the locking mechanism, the spring force accumulator piston being connected directly or via further elements to a piston rod for actuating the vehicle brake; wherein, after release of the locking mechanism, the spring force accumulator spring acts between the two pistons and displaces them relative to one another in the case of a parking brake operation; and at least one pneumatic valve, which is actuated as a function of a location of the accumulator spring in the case of braking operations, is integrated into the brake cylinder in order to actuate the brake cylinder.