Patent ID: 6629489
Filing Date: 2003-10-07
Classification: B29C,B60T

Abstract:
Pneumatic brake booster, in particular for motor vehicles, having a booster housing, the interior of which is subdivided by at least one movable wall into a vacuum chamber and a working chamber, and having a control valve for controlling a pneumatic pressure difference acting upon the movable wall, which control valve projects along an axis into the booster housing and comprises a substantially cylindrical control valve housing, to the outside of which the movable wall is workingly connected in that a collar of a plate associated with the movable wall is deformed along its periphery at least in sections radially into the control valve housing, whereinin a portion of the control valve housing overlapped by the collar of the plate a plurality of recesses are provided, which are spaced apart from one another in peripheral direction and into which the collar of the plate is radially deformed, and that the recesses are accessible from the end of the control valve housing disposed in the booster housing, and that the recesses at the end of the control valve housing disposed in the booster housing form radial undercuts for spring arms of a retaining element, which is used to position a force output tappet of the brake booster, and that said undercuts are accessible from the direction of the end of the control valve housing disposed outside of the booster housing.