Pneumatic brake booster a dead travel to the braking system comprising such a booster

摘要

The present invention is to provide a pneumatic brake booster to the dead travel reduced comprising a skirt (10) is movable in a sealed manner in an envelope and defining a chamber at low pressure and a chamber with variable pressure with respect to a pneumatic piston (16) on a certain distance, the displacement of the pneumatic piston being controlled by the skirt in a first direction in which, when the skirt comes into contact with a first face of an annular plate (100) disposed in the low-pressure chamber and fixed rigidly to the pneumatic piston and the displacement of the piston in a second direction is controlled by an elastic means mounted in the low-pressure chamber and bearing on one of its ends on a second face (100) of the plate annulaire.la present invention applies mainly to the industry of the braking for motor vehicle, and in particular, in particular.