Patent ID: 8397884
Filing Date: 2013-03-19
Classification: B60T

Abstract:
1. 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 a pressure space for applying and releasing the service brake section, the spring force accumulator spring of the spring force accumulator section being arranged in the other space of the two spaces on an opposite side of the piston; a second piston in the other space of the two spaces, wherein the spring force accumulator spring is located between the two pistons with a first spring end biased against the first piston and a second spring end biased against the second piston; a pneumatically actuable locking mechanism, the second piston being lockable with respect to the first piston by the locking mechanism and is releaseable by a release action of the locking mechanism, the second piston being connected directly or via further elements to a piston rod for actuating the vehicle brake; and 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 a manually actuable release device for manually releasing the spring force accumulator brake section without impairing the service brake section functionality.