The spring (1.7) provides braking power when the vehicle stops for parking or emergency, the spring pressurized room (1.3) in which the compressed air necessary for caging the spring (1.7) accumulated, the piston (1.1) compresses the spring (1.7) for cagin...

The invention is related to the brake chamber that the air transfer holes(8) on the piston pipe(2) transfers the air between the spring compression area(6) and the service room(5) while spring braking off and from service room(5) to the spring compression ...