Patent attributes
A vacuum brake booster having a vacuum chamber and a working chamber, which are separated from one another by a movable wall, and a control valve is described. The control valve has a control valve housing (10), which is coupled workingly to the movable wall and which, for achieving a pressure difference at the movable wall, 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 vacuum brake booster. The control valve housing (10) comprises an outer sleeve (12) and an inner sleeve (48), which is disposed radially at the inside of and coaxially with the outer sleeve (12) and is connected by a plurality of webs (58, 62) to the outer sleeve (12). The control valve housing (10) is manufactured by injection molding, wherein at least one injection point (42) is provided, which is disposed in the region of the outer sleeve (12) and at a distance from fastening points of the webs (58, 62) to the outer sleeve (12).
