Patent ID: 6843161

Claim:
Brake booster, comprising a vacuum chamber and a working chamber separated from each other by a movable wall, a control valve, which comprises a housing coupled workingly to the movable wall and which is capable of controlling the supply of atmospheric pressure or above-atmospheric pressure to the working chamber in dependence upon the displacement of an input element of the brake booster to achieve a pressure difference at the movable wall, a sensing disk, which is disposed in an axially displaceable manner inside the control valve housing, and a coupling device for introducing forces acting counter to the actuating direction of the brake booster upon the sensing disk in a coupled position into the control valve housing and in an uncoupled position via an actuating piston into the input element, wherein the coupling device comprises a coupling element for introducing the forces acting counter to the actuating direction into the control valve housing and an axially displaceable actuating element adapted for cooperation with the coupling element to move the coupling device into the coupled position, wherein the coupling device comprises a detent element movable in a radial direction and disposed radially outside of the coupling element, and wherein the coupling element has a stop for the detent element radially at the outside of the coupling element, and wherein in the coupled position the forces acting counter to the actuating direction are introduced by the actuating element to the coupling element and from the coupling element via the stop and the detent element into the control valve housing.