SERVOFREIN WITH VARIABLE ASSISTANCE RATIO, OUTPUT MEMBER, AND DEVICE FOR REACTING SUCH A SERVOFREIN

摘要

A brake booster (200) which, under the control of a control force (210), generates an output force (223), the control force being exerted by a load shedding member (232) on a surface of controlling an input side of a reaction element (230) so that its opposite output face exerts an output force on an output member (222) .An invention of this kind is characterized in that outlet (222) contains extension means passing through the reaction element (230) and comprising at least one stop for retaining moving means of the load shedding member (232) when the intensity of the control force (210) ) or its application speed exceeds an intensity threshold or a speed threshold.