Abstract: An automatic slack adjuster (1, 101, 201) for braking systems of automotive vehicles, in particular for drum brakes of commercial vehicles, includes a lever (3, 103, 203) configured to be operatively coupled to a push rod (117, 217) of a brake actuator, and to pivot about a rotational axis (R) when actuated by the push rod (117, 217), the rotational axis (R) having a predetermined fixed location relative to the vehicle. The stroke level of the slack adjuster (1, 101, 201) is moveable between a predetermined zero stroke position (7a, 107a, 207a) and a working stroke range (7b). The invention furthermore relates to a braking system (100) for an automotive vehicle and a wheelset (200) can include the slack adjuster. An electronic detection unit (98, 109, 209) determines the current stroke level of the automatic slack adjuster (1, 101, 201).

Abstract: A spring brake actuator (1) for a vehicle, in particular a parking or emergency brake actuator, for use in a commercial vehicle, includes a cylinder housing (2) having a cylinder housing base (5) and a spring seat (7) on the base, a spring brake piston (9) located in the cylinder housing (5) for applying a braking force, and a compression spring (11) arranged between the spring seat (7) and the spring brake piston (9). The cylinder housing (2) is divided into a spring chamber (12) and a pressure chamber (14), the compression spring (11) being arranged in the spring chamber (12) and the pressure chamber (14) being supplied with pressurized fluid. An elastically deformable diaphragm (16) is sealingly mounted to the cylinder housing (2), with an inner periphery (18) sealingly mounted to the spring brake piston (9) to fluid-tightly isolate the pressure chamber (14) from the spring chamber (12).

Abstract: A spring brake actuator for a commercial vehicle includes a service brake portion (4) and a spring brake portion (6) that has a housing (8, 108) with a first end (10, 110) proximal to the service brake portion (4), a wall section (12, 112) extending from the first end (10, 110), a second end (14, 114) distal to the service brake portion (4), and a locking mechanism (16, 116) for locking the first and second ends (10, 110, 14, 114) to the wall section (12, 112). The locking mechanism (16, 116) is arranged between the wall section (12, 112) and the second end (14, 114) of the housing (8, 108).

Abstract: An automatic slack adjuster includes a lever configured to be coupled to a push rod of a brake actuator, and to pivot about a rotational axis when actuated by the push rod, the rotational axis having a predetermined fixed location relative to the vehicle. A stroke indicator label is arranged on the lever and configured to designate, for the automatic slack adjuster, a predetermined zero stroke position, a working stroke range, and an overstroke range. A stroke indicator element is configured to visualize the current stroke level of the automatic slack adjuster on the indicator label by way of relative movement between the stroke indicator element and the stroke indicator label in response to pivotal movement of the lever. A mounting bracket of a mounting interface can be adjusted relative to the rotational axis for correctly installing the stroke indicator element.