Patent ID: 7513341
Filing Date: 2009-04-07
Classification: B60T

Abstract:
1. A combined service brake and spring-loaded brake cylinder, comprising: a) a pressure-loaded diaphragm, which is arranged in a housing of a service brake cylinder and which delimits, on one side, a service brake chamber acted upon with service brake pressure and, on the other side, a chamber which holds a restoring spring; b) a spring brake piston, which is arranged in a housing of the spring-loaded brake cylinder and which is actuatable by a preloaded spring and which delimits, on one side, a spring brake chamber and, on the other side, a spring chamber which holds a preloaded spring and which has a piston rod; c) an air-bleed valve, carried in the piston rod, which air-bleed valve produces or blocks a flow connection between the spring chamber and the service brake chamber; wherein the air-bleed valve comprises: