Patent ID: 8789664
Filing Date: 2014-07-29
Classification: B60T,F16D

Abstract:
1. A combined service brake and spring brake cylinder for use in a vehicle brake system, comprising: a service brake piston, which is arranged in a housing of the service brake cylinder; a spring brake piston, which is arranged in a housing of the spring brake cylinder, is actuatable by at least one accumulator spring and has a spring brake piston rod that projects through a central bore of a partition between the service brake cylinder and the spring brake cylinder in order to act on the service brake piston; a sealing assembly located in the central bore of the partition and sealing off an interior of the service brake cylinder from an interior of the spring brake cylinder; an additional sealing assembly carried by a radial outer circumferential surface of the spring brake piston for sealing off a spring chamber that houses the accumulator spring from a spring brake chamber of the spring brake cylinder; wherein