direct connection of parking piston with rod apr

摘要

patent summary: "direct connection of apron parking piston". The present invention relates to a brake actuator, including a plurality of actuator housing portions, a diaphragm seal, partially enclosing a parking brake decoupling chamber is retained between adjacent actuator housing portions and a The elastic element disposed between the diaphragm seal and one of the housing portions opposes the expansion of the parking brake decoupling chamber. With depressurization of the parking brake decoupling chamber, a push rod extending through the parking brake decoupling chamber produces brake actuation. the push rod extends into and out of a service brake actuation chamber by respective fluid pressure release from the parking brake decoupling chamber and fluid pressure supply to the parking brake decoupling chamber A parking piston and a piston, which is secured with the push rod and the diaphragm seal and movable together with both, acts as a seat for the elastic member.