Abstract: A brake booster having a housing is separated into a first chamber and a second chamber by a wall connected to a hub. The hub has a cylindrical body with an axial bore that retains a control valve for sequentially connecting the first chamber with the second chamber to provide for the equalization of fluid pressure therein to define a first mode of operation and interrupting communication between the first and second chambers while connecting the second chamber to a surrounding environment to allow air to enter into the second chamber and create a pressure differential across the wall to defining a second mode of operation. The pressure differential acts on the wall to develop an output force that pressurize fluid to effect a brake application. The brake booster is characterized by a first input member responsive to a manual input and a second input member responsive to an ECU for moving the control valve from the first mode to the second mode to respectively develop first and second brake applications.

Abstract: A motor stator 400 is integrated with a position sensor 200 through a novel attachment ring 600. Electrical connection to the integrated device is through terminals 202, 210 that pass through the position sensor housing 250. The stator 400 is preferably overmolded, though other suitable forms of encapsulation are contemplated. The attachment ring 600 is preferably ultrasonically bonded to the sensor 200 during manufacture, prior to insertion of the motor armature 430. Other methods of attachment arc contemplated, and various types of motors and sensors are also contemplated.